./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i --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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i -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 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:15:43,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:15:43,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:15:43,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:15:43,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:15:43,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:15:43,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:15:43,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:15:43,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:15:43,773 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:15:43,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:15:43,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:15:43,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:15:43,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:15:43,775 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:15:43,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:15:43,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:15:43,775 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:15:43,776 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:15:43,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:15:43,777 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:15:43,777 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:15:43,777 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:15:43,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:15:43,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:15:43,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:15:43,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:15:43,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:15:43,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:15:43,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:15:43,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:15:43,779 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 -> 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 [2025-03-17 00:15:44,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:15:44,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:15:44,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:15:44,065 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:15:44,065 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:15:44,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2025-03-17 00:15:45,235 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87fd6d683/55ba95f03ac4455eb29334258a493f41/FLAGa1578325e [2025-03-17 00:15:45,516 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:15:45,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2025-03-17 00:15:45,523 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87fd6d683/55ba95f03ac4455eb29334258a493f41/FLAGa1578325e [2025-03-17 00:15:45,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87fd6d683/55ba95f03ac4455eb29334258a493f41 [2025-03-17 00:15:45,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:15:45,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:15:45,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:15:45,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:15:45,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:15:45,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:15:45" (1/1) ... [2025-03-17 00:15:45,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67682a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:45, skipping insertion in model container [2025-03-17 00:15:45,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:15:45" (1/1) ... [2025-03-17 00:15:45,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:15:45,935 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2025-03-17 00:15:45,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:15:45,987 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:15:45,994 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2025-03-17 00:15:46,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:15:46,025 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:15:46,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46 WrapperNode [2025-03-17 00:15:46,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:15:46,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:15:46,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:15:46,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:15:46,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,084 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2025-03-17 00:15:46,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:15:46,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:15:46,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:15:46,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:15:46,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,114 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]. [2025-03-17 00:15:46,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,122 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,127 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:15:46,136 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:15:46,136 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:15:46,136 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:15:46,137 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (1/1) ... [2025-03-17 00:15:46,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:15:46,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:15:46,163 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) [2025-03-17 00:15:46,167 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 [2025-03-17 00:15:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:15:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:15:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:15:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:15:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:15:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:15:46,255 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:15:46,259 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:15:46,555 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L181: havoc property_#t~bitwise21#1;havoc property_#t~ite23#1;havoc property_#t~bitwise22#1;havoc property_#t~short24#1; [2025-03-17 00:15:46,589 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-03-17 00:15:46,589 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:15:46,612 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:15:46,612 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 00:15:46,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:15:46 BoogieIcfgContainer [2025-03-17 00:15:46,613 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:15:46,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:15:46,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:15:46,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:15:46,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:15:45" (1/3) ... [2025-03-17 00:15:46,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de56e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:15:46, skipping insertion in model container [2025-03-17 00:15:46,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:15:46" (2/3) ... [2025-03-17 00:15:46,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de56e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:15:46, skipping insertion in model container [2025-03-17 00:15:46,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:15:46" (3/3) ... [2025-03-17 00:15:46,621 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2025-03-17 00:15:46,633 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:15:46,634 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i that has 2 procedures, 94 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:15:46,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:15:46,683 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;@6d5be582, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:15:46,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:15:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 64 states have (on average 1.484375) internal successors, (95), 65 states have internal predecessors, (95), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-17 00:15:46,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-17 00:15:46,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:46,698 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:46,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:46,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash -577488959, now seen corresponding path program 1 times [2025-03-17 00:15:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593877213] [2025-03-17 00:15:46,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:46,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:46,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-17 00:15:46,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-17 00:15:46,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:46,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2025-03-17 00:15:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:15:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593877213] [2025-03-17 00:15:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593877213] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:15:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520295559] [2025-03-17 00:15:47,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:47,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:15:47,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:15:47,037 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) [2025-03-17 00:15:47,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:15:47,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-17 00:15:47,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-17 00:15:47,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:47,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:47,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:15:47,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:15:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2025-03-17 00:15:47,254 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:15:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520295559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:15:47,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:15:47,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:15:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719358107] [2025-03-17 00:15:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:15:47,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:15:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:15:47,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:15:47,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:15:47,283 INFO L87 Difference]: Start difference. First operand has 94 states, 64 states have (on average 1.484375) internal successors, (95), 65 states have internal predecessors, (95), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-17 00:15:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:15:47,321 INFO L93 Difference]: Finished difference Result 185 states and 323 transitions. [2025-03-17 00:15:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:15:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2025-03-17 00:15:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:15:47,328 INFO L225 Difference]: With dead ends: 185 [2025-03-17 00:15:47,328 INFO L226 Difference]: Without dead ends: 92 [2025-03-17 00:15:47,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:15:47,335 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:15:47,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:15:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-17 00:15:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-03-17 00:15:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-17 00:15:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 145 transitions. [2025-03-17 00:15:47,380 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 145 transitions. Word has length 174 [2025-03-17 00:15:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:15:47,381 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 145 transitions. [2025-03-17 00:15:47,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-17 00:15:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 145 transitions. [2025-03-17 00:15:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-17 00:15:47,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:47,386 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:47,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 00:15:47,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 00:15:47,587 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:47,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -661394078, now seen corresponding path program 1 times [2025-03-17 00:15:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634463078] [2025-03-17 00:15:47,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:47,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:47,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-17 00:15:47,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-17 00:15:47,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:47,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:15:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:15:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634463078] [2025-03-17 00:15:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634463078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:15:48,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:15:48,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:15:48,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233099958] [2025-03-17 00:15:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:15:48,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:15:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:15:48,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:15:48,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:15:48,012 INFO L87 Difference]: Start difference. First operand 92 states and 145 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:48,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:15:48,065 INFO L93 Difference]: Finished difference Result 274 states and 433 transitions. [2025-03-17 00:15:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:15:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-17 00:15:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:15:48,068 INFO L225 Difference]: With dead ends: 274 [2025-03-17 00:15:48,068 INFO L226 Difference]: Without dead ends: 183 [2025-03-17 00:15:48,069 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 [2025-03-17 00:15:48,071 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 142 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:15:48,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 355 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:15:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-17 00:15:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2025-03-17 00:15:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 124 states have (on average 1.4435483870967742) internal successors, (179), 124 states have internal predecessors, (179), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-17 00:15:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2025-03-17 00:15:48,103 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 174 [2025-03-17 00:15:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:15:48,104 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2025-03-17 00:15:48,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2025-03-17 00:15:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-17 00:15:48,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:48,106 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:48,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:15:48,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:48,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash -450043165, now seen corresponding path program 1 times [2025-03-17 00:15:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:48,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717077652] [2025-03-17 00:15:48,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:48,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-17 00:15:48,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-17 00:15:48,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:48,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:15:48,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:15:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717077652] [2025-03-17 00:15:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717077652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:15:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:15:48,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:15:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955512987] [2025-03-17 00:15:48,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:15:48,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:15:48,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:15:48,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:15:48,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:15:48,439 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:15:48,658 INFO L93 Difference]: Finished difference Result 599 states and 948 transitions. [2025-03-17 00:15:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:15:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-17 00:15:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:15:48,664 INFO L225 Difference]: With dead ends: 599 [2025-03-17 00:15:48,664 INFO L226 Difference]: Without dead ends: 419 [2025-03-17 00:15:48,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:15:48,667 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 151 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:15:48,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 443 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 00:15:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-03-17 00:15:48,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 363. [2025-03-17 00:15:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 250 states have (on average 1.432) internal successors, (358), 250 states have internal predecessors, (358), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-17 00:15:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 574 transitions. [2025-03-17 00:15:48,737 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 574 transitions. Word has length 174 [2025-03-17 00:15:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:15:48,737 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 574 transitions. [2025-03-17 00:15:48,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 574 transitions. [2025-03-17 00:15:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-17 00:15:48,739 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:48,739 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:48,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:15:48,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:48,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1629867304, now seen corresponding path program 1 times [2025-03-17 00:15:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:48,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568505941] [2025-03-17 00:15:48,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:48,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-17 00:15:48,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-17 00:15:48,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:48,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:15:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:15:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568505941] [2025-03-17 00:15:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568505941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:15:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:15:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 00:15:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55688409] [2025-03-17 00:15:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:15:49,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 00:15:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:15:49,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 00:15:49,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:15:49,047 INFO L87 Difference]: Start difference. First operand 363 states and 574 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:15:49,371 INFO L93 Difference]: Finished difference Result 1076 states and 1697 transitions. [2025-03-17 00:15:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 00:15:49,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2025-03-17 00:15:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:15:49,377 INFO L225 Difference]: With dead ends: 1076 [2025-03-17 00:15:49,379 INFO L226 Difference]: Without dead ends: 714 [2025-03-17 00:15:49,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 00:15:49,382 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 170 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 00:15:49,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 552 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 00:15:49,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2025-03-17 00:15:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 371. [2025-03-17 00:15:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 258 states have (on average 1.4186046511627908) internal successors, (366), 258 states have internal predecessors, (366), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-17 00:15:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 582 transitions. [2025-03-17 00:15:49,456 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 582 transitions. Word has length 175 [2025-03-17 00:15:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:15:49,457 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 582 transitions. [2025-03-17 00:15:49,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 582 transitions. [2025-03-17 00:15:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 00:15:49,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:49,460 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:49,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 00:15:49,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:49,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1075855776, now seen corresponding path program 1 times [2025-03-17 00:15:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:49,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785645312] [2025-03-17 00:15:49,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:49,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:49,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 00:15:49,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 00:15:49,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:49,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:15:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:15:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785645312] [2025-03-17 00:15:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785645312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:15:51,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:15:51,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:15:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546854583] [2025-03-17 00:15:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:15:51,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:15:51,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:15:51,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:15:51,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:15:51,610 INFO L87 Difference]: Start difference. First operand 371 states and 582 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:15:52,007 INFO L93 Difference]: Finished difference Result 1064 states and 1648 transitions. [2025-03-17 00:15:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 00:15:52,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2025-03-17 00:15:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:15:52,012 INFO L225 Difference]: With dead ends: 1064 [2025-03-17 00:15:52,013 INFO L226 Difference]: Without dead ends: 694 [2025-03-17 00:15:52,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 00:15:52,016 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 203 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:15:52,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 483 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 00:15:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-17 00:15:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 470. [2025-03-17 00:15:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 329 states have (on average 1.419452887537994) internal successors, (467), 329 states have internal predecessors, (467), 135 states have call successors, (135), 5 states have call predecessors, (135), 5 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:15:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 737 transitions. [2025-03-17 00:15:52,067 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 737 transitions. Word has length 176 [2025-03-17 00:15:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:15:52,067 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 737 transitions. [2025-03-17 00:15:52,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 737 transitions. [2025-03-17 00:15:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 00:15:52,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:52,071 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:52,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 00:15:52,071 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:52,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash -473718917, now seen corresponding path program 1 times [2025-03-17 00:15:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347785099] [2025-03-17 00:15:52,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:52,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 00:15:52,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 00:15:52,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:52,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:15:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:15:55,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:15:55,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347785099] [2025-03-17 00:15:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347785099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:15:55,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:15:55,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 00:15:55,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727449157] [2025-03-17 00:15:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:15:55,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 00:15:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:15:55,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 00:15:55,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 00:15:55,622 INFO L87 Difference]: Start difference. First operand 470 states and 737 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:15:58,423 INFO L93 Difference]: Finished difference Result 1226 states and 1864 transitions. [2025-03-17 00:15:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 00:15:58,423 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2025-03-17 00:15:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:15:58,428 INFO L225 Difference]: With dead ends: 1226 [2025-03-17 00:15:58,428 INFO L226 Difference]: Without dead ends: 856 [2025-03-17 00:15:58,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2025-03-17 00:15:58,430 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 607 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:15:58,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 602 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 00:15:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2025-03-17 00:15:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 602. [2025-03-17 00:15:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 437 states have (on average 1.4073226544622426) internal successors, (615), 441 states have internal predecessors, (615), 155 states have call successors, (155), 9 states have call predecessors, (155), 9 states have return successors, (155), 151 states have call predecessors, (155), 155 states have call successors, (155) [2025-03-17 00:15:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 925 transitions. [2025-03-17 00:15:58,489 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 925 transitions. Word has length 176 [2025-03-17 00:15:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:15:58,489 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 925 transitions. [2025-03-17 00:15:58,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:15:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 925 transitions. [2025-03-17 00:15:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 00:15:58,491 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:15:58,491 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:15:58,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 00:15:58,491 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:15:58,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:15:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash 413784764, now seen corresponding path program 1 times [2025-03-17 00:15:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:15:58,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611839432] [2025-03-17 00:15:58,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:15:58,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:15:58,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 00:15:58,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 00:15:58,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:15:58,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611839432] [2025-03-17 00:16:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611839432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 00:16:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259083155] [2025-03-17 00:16:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:00,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 00:16:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:00,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 00:16:00,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 00:16:00,362 INFO L87 Difference]: Start difference. First operand 602 states and 925 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:01,370 INFO L93 Difference]: Finished difference Result 1736 states and 2611 transitions. [2025-03-17 00:16:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 00:16:01,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2025-03-17 00:16:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:01,378 INFO L225 Difference]: With dead ends: 1736 [2025-03-17 00:16:01,378 INFO L226 Difference]: Without dead ends: 1234 [2025-03-17 00:16:01,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-03-17 00:16:01,380 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 414 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:01,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 597 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 00:16:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2025-03-17 00:16:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 692. [2025-03-17 00:16:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 527 states have (on average 1.4060721062618595) internal successors, (741), 531 states have internal predecessors, (741), 155 states have call successors, (155), 9 states have call predecessors, (155), 9 states have return successors, (155), 151 states have call predecessors, (155), 155 states have call successors, (155) [2025-03-17 00:16:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1051 transitions. [2025-03-17 00:16:01,428 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1051 transitions. Word has length 176 [2025-03-17 00:16:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:01,428 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1051 transitions. [2025-03-17 00:16:01,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1051 transitions. [2025-03-17 00:16:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 00:16:01,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:01,430 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:01,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 00:16:01,430 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:01,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2013793916, now seen corresponding path program 1 times [2025-03-17 00:16:01,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:01,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128864463] [2025-03-17 00:16:01,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:01,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 00:16:01,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 00:16:01,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:01,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128864463] [2025-03-17 00:16:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128864463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:03,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 00:16:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580862743] [2025-03-17 00:16:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:03,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 00:16:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:03,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 00:16:03,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-17 00:16:03,264 INFO L87 Difference]: Start difference. First operand 692 states and 1051 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:04,238 INFO L93 Difference]: Finished difference Result 1840 states and 2733 transitions. [2025-03-17 00:16:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 00:16:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2025-03-17 00:16:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:04,245 INFO L225 Difference]: With dead ends: 1840 [2025-03-17 00:16:04,248 INFO L226 Difference]: Without dead ends: 1252 [2025-03-17 00:16:04,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-17 00:16:04,251 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 332 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:04,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 572 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 00:16:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2025-03-17 00:16:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 978. [2025-03-17 00:16:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 813 states have (on average 1.4206642066420665) internal successors, (1155), 817 states have internal predecessors, (1155), 155 states have call successors, (155), 9 states have call predecessors, (155), 9 states have return successors, (155), 151 states have call predecessors, (155), 155 states have call successors, (155) [2025-03-17 00:16:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1465 transitions. [2025-03-17 00:16:04,309 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1465 transitions. Word has length 176 [2025-03-17 00:16:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:04,309 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1465 transitions. [2025-03-17 00:16:04,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1465 transitions. [2025-03-17 00:16:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 00:16:04,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:04,311 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:04,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 00:16:04,312 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 570297151, now seen corresponding path program 1 times [2025-03-17 00:16:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52447858] [2025-03-17 00:16:04,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:04,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 00:16:04,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 00:16:04,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:04,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:04,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52447858] [2025-03-17 00:16:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52447858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:04,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:04,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:16:04,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5834913] [2025-03-17 00:16:04,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:04,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:16:04,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:04,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:16:04,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:16:04,532 INFO L87 Difference]: Start difference. First operand 978 states and 1465 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:04,788 INFO L93 Difference]: Finished difference Result 1710 states and 2559 transitions. [2025-03-17 00:16:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:16:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2025-03-17 00:16:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:04,794 INFO L225 Difference]: With dead ends: 1710 [2025-03-17 00:16:04,794 INFO L226 Difference]: Without dead ends: 1000 [2025-03-17 00:16:04,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:16:04,797 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 103 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:04,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 364 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 00:16:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2025-03-17 00:16:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 894. [2025-03-17 00:16:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 729 states have (on average 1.3868312757201646) internal successors, (1011), 733 states have internal predecessors, (1011), 155 states have call successors, (155), 9 states have call predecessors, (155), 9 states have return successors, (155), 151 states have call predecessors, (155), 155 states have call successors, (155) [2025-03-17 00:16:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1321 transitions. [2025-03-17 00:16:04,879 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1321 transitions. Word has length 176 [2025-03-17 00:16:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:04,879 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1321 transitions. [2025-03-17 00:16:04,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1321 transitions. [2025-03-17 00:16:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-17 00:16:04,882 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:04,882 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:04,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 00:16:04,882 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:04,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1567792815, now seen corresponding path program 1 times [2025-03-17 00:16:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:04,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823368105] [2025-03-17 00:16:04,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:04,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:04,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-17 00:16:04,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-17 00:16:04,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:04,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:09,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823368105] [2025-03-17 00:16:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823368105] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:09,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 00:16:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647290826] [2025-03-17 00:16:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:09,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 00:16:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:09,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 00:16:09,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-17 00:16:09,625 INFO L87 Difference]: Start difference. First operand 894 states and 1321 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:11,035 INFO L93 Difference]: Finished difference Result 1836 states and 2686 transitions. [2025-03-17 00:16:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 00:16:11,036 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2025-03-17 00:16:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:11,042 INFO L225 Difference]: With dead ends: 1836 [2025-03-17 00:16:11,042 INFO L226 Difference]: Without dead ends: 1104 [2025-03-17 00:16:11,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2025-03-17 00:16:11,045 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 294 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:11,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1010 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 00:16:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2025-03-17 00:16:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 916. [2025-03-17 00:16:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 751 states have (on average 1.3808255659121171) internal successors, (1037), 755 states have internal predecessors, (1037), 155 states have call successors, (155), 9 states have call predecessors, (155), 9 states have return successors, (155), 151 states have call predecessors, (155), 155 states have call successors, (155) [2025-03-17 00:16:11,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1347 transitions. [2025-03-17 00:16:11,098 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1347 transitions. Word has length 177 [2025-03-17 00:16:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:11,101 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1347 transitions. [2025-03-17 00:16:11,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1347 transitions. [2025-03-17 00:16:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-17 00:16:11,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:11,103 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:11,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 00:16:11,103 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:11,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1388973804, now seen corresponding path program 1 times [2025-03-17 00:16:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792574975] [2025-03-17 00:16:11,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:11,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-17 00:16:11,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-17 00:16:11,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:11,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:13,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792574975] [2025-03-17 00:16:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792574975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:13,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:13,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 00:16:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033068195] [2025-03-17 00:16:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:13,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 00:16:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:13,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 00:16:13,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-17 00:16:13,072 INFO L87 Difference]: Start difference. First operand 916 states and 1347 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:14,301 INFO L93 Difference]: Finished difference Result 1824 states and 2681 transitions. [2025-03-17 00:16:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 00:16:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2025-03-17 00:16:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:14,307 INFO L225 Difference]: With dead ends: 1824 [2025-03-17 00:16:14,307 INFO L226 Difference]: Without dead ends: 1322 [2025-03-17 00:16:14,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-17 00:16:14,309 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 248 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:14,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 795 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 00:16:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2025-03-17 00:16:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 832. [2025-03-17 00:16:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 687 states have (on average 1.3697234352256187) internal successors, (941), 687 states have internal predecessors, (941), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:16:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1211 transitions. [2025-03-17 00:16:14,367 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1211 transitions. Word has length 177 [2025-03-17 00:16:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:14,368 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1211 transitions. [2025-03-17 00:16:14,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1211 transitions. [2025-03-17 00:16:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-17 00:16:14,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:14,370 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:14,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 00:16:14,370 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:14,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1493474371, now seen corresponding path program 1 times [2025-03-17 00:16:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:14,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880397982] [2025-03-17 00:16:14,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:14,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-17 00:16:14,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-17 00:16:14,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:14,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:17,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880397982] [2025-03-17 00:16:17,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880397982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:17,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:17,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 00:16:17,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174395314] [2025-03-17 00:16:17,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:17,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 00:16:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:17,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 00:16:17,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-17 00:16:17,740 INFO L87 Difference]: Start difference. First operand 832 states and 1211 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:23,515 INFO L93 Difference]: Finished difference Result 1740 states and 2534 transitions. [2025-03-17 00:16:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-17 00:16:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2025-03-17 00:16:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:23,520 INFO L225 Difference]: With dead ends: 1740 [2025-03-17 00:16:23,521 INFO L226 Difference]: Without dead ends: 1322 [2025-03-17 00:16:23,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2025-03-17 00:16:23,523 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 420 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:23,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 662 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 00:16:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2025-03-17 00:16:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 884. [2025-03-17 00:16:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 739 states have (on average 1.3707713125845737) internal successors, (1013), 739 states have internal predecessors, (1013), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:16:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1283 transitions. [2025-03-17 00:16:23,572 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1283 transitions. Word has length 178 [2025-03-17 00:16:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:23,573 INFO L471 AbstractCegarLoop]: Abstraction has 884 states and 1283 transitions. [2025-03-17 00:16:23,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1283 transitions. [2025-03-17 00:16:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-17 00:16:23,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:23,575 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:23,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 00:16:23,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:23,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1201483773, now seen corresponding path program 1 times [2025-03-17 00:16:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167468822] [2025-03-17 00:16:23,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:23,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-17 00:16:23,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-17 00:16:23,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:23,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:28,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:28,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167468822] [2025-03-17 00:16:28,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167468822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:28,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:28,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 00:16:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138385686] [2025-03-17 00:16:28,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:28,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 00:16:28,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:28,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 00:16:28,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 00:16:28,639 INFO L87 Difference]: Start difference. First operand 884 states and 1283 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:30,890 INFO L93 Difference]: Finished difference Result 1780 states and 2576 transitions. [2025-03-17 00:16:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 00:16:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2025-03-17 00:16:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:30,896 INFO L225 Difference]: With dead ends: 1780 [2025-03-17 00:16:30,896 INFO L226 Difference]: Without dead ends: 1180 [2025-03-17 00:16:30,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2025-03-17 00:16:30,898 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 469 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:30,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 679 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 00:16:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2025-03-17 00:16:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 900. [2025-03-17 00:16:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 755 states have (on average 1.3602649006622516) internal successors, (1027), 755 states have internal predecessors, (1027), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:16:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1297 transitions. [2025-03-17 00:16:30,952 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1297 transitions. Word has length 178 [2025-03-17 00:16:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:30,953 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1297 transitions. [2025-03-17 00:16:30,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1297 transitions. [2025-03-17 00:16:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-17 00:16:30,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:30,955 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:30,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 00:16:30,955 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:30,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:30,956 INFO L85 PathProgramCache]: Analyzing trace with hash -313980092, now seen corresponding path program 1 times [2025-03-17 00:16:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:30,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139746909] [2025-03-17 00:16:30,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:30,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:30,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-17 00:16:31,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-17 00:16:31,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:31,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:38,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139746909] [2025-03-17 00:16:38,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139746909] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:38,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:38,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 00:16:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966436208] [2025-03-17 00:16:38,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:38,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 00:16:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:38,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 00:16:38,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2025-03-17 00:16:38,215 INFO L87 Difference]: Start difference. First operand 900 states and 1297 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:40,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:40,501 INFO L93 Difference]: Finished difference Result 1736 states and 2449 transitions. [2025-03-17 00:16:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 00:16:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2025-03-17 00:16:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:40,506 INFO L225 Difference]: With dead ends: 1736 [2025-03-17 00:16:40,506 INFO L226 Difference]: Without dead ends: 1290 [2025-03-17 00:16:40,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2025-03-17 00:16:40,508 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 473 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:40,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 867 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 00:16:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2025-03-17 00:16:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 952. [2025-03-17 00:16:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 807 states have (on average 1.3543990086741016) internal successors, (1093), 807 states have internal predecessors, (1093), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:16:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1363 transitions. [2025-03-17 00:16:40,553 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1363 transitions. Word has length 178 [2025-03-17 00:16:40,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:40,554 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1363 transitions. [2025-03-17 00:16:40,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1363 transitions. [2025-03-17 00:16:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-17 00:16:40,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:40,556 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:40,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 00:16:40,556 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:40,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1595955009, now seen corresponding path program 1 times [2025-03-17 00:16:40,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:40,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465326520] [2025-03-17 00:16:40,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:40,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:40,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-17 00:16:40,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-17 00:16:40,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:40,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:48,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:48,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465326520] [2025-03-17 00:16:48,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465326520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:48,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:48,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 00:16:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804897196] [2025-03-17 00:16:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:48,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 00:16:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:48,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 00:16:48,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-03-17 00:16:48,806 INFO L87 Difference]: Start difference. First operand 952 states and 1363 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:50,713 INFO L93 Difference]: Finished difference Result 1590 states and 2272 transitions. [2025-03-17 00:16:50,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 00:16:50,713 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2025-03-17 00:16:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:50,718 INFO L225 Difference]: With dead ends: 1590 [2025-03-17 00:16:50,718 INFO L226 Difference]: Without dead ends: 1144 [2025-03-17 00:16:50,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2025-03-17 00:16:50,722 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 375 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:50,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 784 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 00:16:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2025-03-17 00:16:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 932. [2025-03-17 00:16:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 787 states have (on average 1.358322744599746) internal successors, (1069), 787 states have internal predecessors, (1069), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:16:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1339 transitions. [2025-03-17 00:16:50,772 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1339 transitions. Word has length 178 [2025-03-17 00:16:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:50,773 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1339 transitions. [2025-03-17 00:16:50,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1339 transitions. [2025-03-17 00:16:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-17 00:16:50,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:50,775 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:50,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 00:16:50,775 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:50,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash -706283470, now seen corresponding path program 1 times [2025-03-17 00:16:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259388070] [2025-03-17 00:16:50,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:50,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-17 00:16:50,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-17 00:16:50,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:50,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:16:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:16:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:16:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259388070] [2025-03-17 00:16:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259388070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:16:54,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:16:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 00:16:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182444727] [2025-03-17 00:16:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:16:54,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 00:16:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:16:54,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 00:16:54,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2025-03-17 00:16:54,582 INFO L87 Difference]: Start difference. First operand 932 states and 1339 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:16:57,094 INFO L93 Difference]: Finished difference Result 1620 states and 2331 transitions. [2025-03-17 00:16:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 00:16:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2025-03-17 00:16:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:16:57,099 INFO L225 Difference]: With dead ends: 1620 [2025-03-17 00:16:57,099 INFO L226 Difference]: Without dead ends: 1174 [2025-03-17 00:16:57,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2025-03-17 00:16:57,100 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 293 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:16:57,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 947 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 00:16:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2025-03-17 00:16:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 940. [2025-03-17 00:16:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 795 states have (on average 1.359748427672956) internal successors, (1081), 795 states have internal predecessors, (1081), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:16:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1351 transitions. [2025-03-17 00:16:57,149 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1351 transitions. Word has length 179 [2025-03-17 00:16:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:16:57,149 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1351 transitions. [2025-03-17 00:16:57,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:16:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1351 transitions. [2025-03-17 00:16:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-17 00:16:57,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:16:57,150 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:16:57,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 00:16:57,151 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:16:57,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:16:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1781229363, now seen corresponding path program 1 times [2025-03-17 00:16:57,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:16:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904663526] [2025-03-17 00:16:57,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:16:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:16:57,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-17 00:16:57,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-17 00:16:57,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:16:57,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:17:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:17:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:17:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904663526] [2025-03-17 00:17:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904663526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:17:01,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:17:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 00:17:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948587508] [2025-03-17 00:17:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:17:01,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 00:17:01,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:17:01,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 00:17:01,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2025-03-17 00:17:01,564 INFO L87 Difference]: Start difference. First operand 940 states and 1351 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:17:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:17:02,799 INFO L93 Difference]: Finished difference Result 1560 states and 2239 transitions. [2025-03-17 00:17:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 00:17:02,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2025-03-17 00:17:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:17:02,803 INFO L225 Difference]: With dead ends: 1560 [2025-03-17 00:17:02,803 INFO L226 Difference]: Without dead ends: 1106 [2025-03-17 00:17:02,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2025-03-17 00:17:02,805 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 265 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 00:17:02,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 870 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 00:17:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2025-03-17 00:17:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 888. [2025-03-17 00:17:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 743 states have (on average 1.3580080753701211) internal successors, (1009), 743 states have internal predecessors, (1009), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:17:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1279 transitions. [2025-03-17 00:17:02,850 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1279 transitions. Word has length 179 [2025-03-17 00:17:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:17:02,851 INFO L471 AbstractCegarLoop]: Abstraction has 888 states and 1279 transitions. [2025-03-17 00:17:02,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:17:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1279 transitions. [2025-03-17 00:17:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-17 00:17:02,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:17:02,852 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:17:02,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 00:17:02,852 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:17:02,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:17:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1390830674, now seen corresponding path program 1 times [2025-03-17 00:17:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:17:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269160610] [2025-03-17 00:17:02,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:17:02,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:17:02,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-17 00:17:02,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-17 00:17:02,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:17:02,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:17:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-17 00:17:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:17:04,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269160610] [2025-03-17 00:17:04,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269160610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:17:04,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:17:04,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 00:17:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532589913] [2025-03-17 00:17:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:17:04,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 00:17:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:17:04,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 00:17:04,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-17 00:17:04,816 INFO L87 Difference]: Start difference. First operand 888 states and 1279 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:17:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:17:05,983 INFO L93 Difference]: Finished difference Result 1636 states and 2359 transitions. [2025-03-17 00:17:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 00:17:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2025-03-17 00:17:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:17:05,988 INFO L225 Difference]: With dead ends: 1636 [2025-03-17 00:17:05,988 INFO L226 Difference]: Without dead ends: 1190 [2025-03-17 00:17:05,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2025-03-17 00:17:05,990 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 257 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 00:17:05,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 879 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 00:17:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2025-03-17 00:17:06,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 880. [2025-03-17 00:17:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 735 states have (on average 1.3564625850340135) internal successors, (997), 735 states have internal predecessors, (997), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 00:17:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1267 transitions. [2025-03-17 00:17:06,040 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1267 transitions. Word has length 179 [2025-03-17 00:17:06,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:17:06,040 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1267 transitions. [2025-03-17 00:17:06,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 00:17:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1267 transitions. [2025-03-17 00:17:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-17 00:17:06,042 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:17:06,042 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:17:06,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 00:17:06,043 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:17:06,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:17:06,043 INFO L85 PathProgramCache]: Analyzing trace with hash 280945393, now seen corresponding path program 1 times [2025-03-17 00:17:06,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:17:06,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812732314] [2025-03-17 00:17:06,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:17:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:17:06,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-17 00:17:06,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-17 00:17:06,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:17:06,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat