./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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-50_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 56ab96e739c021e0a820f09f7d8df07ac4eb08fdb70334870660d3f078d5cedf --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 20:16:22,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 20:16:22,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 20:16:22,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 20:16:22,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 20:16:22,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 20:16:22,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 20:16:22,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 20:16:22,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 20:16:22,904 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 20:16:22,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 20:16:22,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 20:16:22,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 20:16:22,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 20:16:22,905 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 20:16:22,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 20:16:22,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 20:16:22,907 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 20:16:22,907 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 20:16:22,907 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 20:16:22,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 20:16:22,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 20:16:22,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 20:16:22,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 20:16:22,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 20:16:22,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 20:16:22,908 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 -> 56ab96e739c021e0a820f09f7d8df07ac4eb08fdb70334870660d3f078d5cedf [2025-03-03 20:16:23,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 20:16:23,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 20:16:23,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 20:16:23,137 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 20:16:23,137 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 20:16:23,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2025-03-03 20:16:24,333 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17924b73/49de4080b144447abfebfd2130686f2c/FLAG041791810 [2025-03-03 20:16:24,590 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 20:16:24,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2025-03-03 20:16:24,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17924b73/49de4080b144447abfebfd2130686f2c/FLAG041791810 [2025-03-03 20:16:24,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17924b73/49de4080b144447abfebfd2130686f2c [2025-03-03 20:16:24,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 20:16:24,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 20:16:24,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 20:16:24,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 20:16:24,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 20:16:24,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:24,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab5dea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24, skipping insertion in model container [2025-03-03 20:16:24,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:24,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 20:16:24,758 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-50_file-34.i[915,928] [2025-03-03 20:16:24,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 20:16:24,857 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 20:16:24,866 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-50_file-34.i[915,928] [2025-03-03 20:16:24,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 20:16:24,928 INFO L204 MainTranslator]: Completed translation [2025-03-03 20:16:24,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24 WrapperNode [2025-03-03 20:16:24,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 20:16:24,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 20:16:24,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 20:16:24,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 20:16:24,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:24,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:24,982 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 263 [2025-03-03 20:16:24,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 20:16:24,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 20:16:24,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 20:16:24,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 20:16:24,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:24,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:24,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,019 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]. [2025-03-03 20:16:25,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,027 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 20:16:25,036 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 20:16:25,036 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 20:16:25,036 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 20:16:25,037 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (1/1) ... [2025-03-03 20:16:25,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 20:16:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:16:25,063 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) [2025-03-03 20:16:25,069 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 [2025-03-03 20:16:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 20:16:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 20:16:25,083 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 20:16:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 20:16:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 20:16:25,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 20:16:25,160 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 20:16:25,161 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 20:16:25,495 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L205: havoc property_#t~bitwise24#1;havoc property_#t~ite26#1;havoc property_#t~bitwise25#1;havoc property_#t~short27#1; [2025-03-03 20:16:25,535 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-03-03 20:16:25,535 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 20:16:25,549 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 20:16:25,549 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 20:16:25,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:16:25 BoogieIcfgContainer [2025-03-03 20:16:25,550 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 20:16:25,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 20:16:25,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 20:16:25,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 20:16:25,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 08:16:24" (1/3) ... [2025-03-03 20:16:25,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fccd636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:16:25, skipping insertion in model container [2025-03-03 20:16:25,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:16:24" (2/3) ... [2025-03-03 20:16:25,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fccd636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:16:25, skipping insertion in model container [2025-03-03 20:16:25,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:16:25" (3/3) ... [2025-03-03 20:16:25,557 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2025-03-03 20:16:25,567 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 20:16:25,569 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-34.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 20:16:25,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 20:16:25,619 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;@75aa0016, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 20:16:25,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 20:16:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 76 states have internal predecessors, (110), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-03 20:16:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-03-03 20:16:25,636 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:25,636 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:25,636 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:25,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash 687538634, now seen corresponding path program 1 times [2025-03-03 20:16:25,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:25,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532822818] [2025-03-03 20:16:25,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:25,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-03-03 20:16:25,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-03-03 20:16:25,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:25,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-03-03 20:16:25,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532822818] [2025-03-03 20:16:25,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532822818] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:16:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936139014] [2025-03-03 20:16:25,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:25,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:16:25,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:16:25,997 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) [2025-03-03 20:16:25,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 20:16:26,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-03-03 20:16:26,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-03-03 20:16:26,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:26,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:26,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 20:16:26,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:16:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-03-03 20:16:26,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 20:16:26,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936139014] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:26,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 20:16:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 20:16:26,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348515144] [2025-03-03 20:16:26,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:26,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 20:16:26,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:26,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 20:16:26,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 20:16:26,216 INFO L87 Difference]: Start difference. First operand has 111 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 76 states have internal predecessors, (110), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-03 20:16:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:26,248 INFO L93 Difference]: Finished difference Result 216 states and 380 transitions. [2025-03-03 20:16:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 20:16:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212 [2025-03-03 20:16:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:26,257 INFO L225 Difference]: With dead ends: 216 [2025-03-03 20:16:26,257 INFO L226 Difference]: Without dead ends: 108 [2025-03-03 20:16:26,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 20:16:26,261 INFO L435 NwaCegarLoop]: 167 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, 167 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 [2025-03-03 20:16:26,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 20:16:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-03-03 20:16:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-03-03 20:16:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-03 20:16:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions. [2025-03-03 20:16:26,290 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 212 [2025-03-03 20:16:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:26,290 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 171 transitions. [2025-03-03 20:16:26,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-03 20:16:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions. [2025-03-03 20:16:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-03-03 20:16:26,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:26,294 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:26,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 20:16:26,498 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 [2025-03-03 20:16:26,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:26,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:26,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1320592583, now seen corresponding path program 1 times [2025-03-03 20:16:26,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:26,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496296386] [2025-03-03 20:16:26,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:26,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:26,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-03-03 20:16:26,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-03-03 20:16:26,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:26,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:27,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496296386] [2025-03-03 20:16:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496296386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:27,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 20:16:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976734196] [2025-03-03 20:16:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:27,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 20:16:27,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:27,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 20:16:27,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 20:16:27,072 INFO L87 Difference]: Start difference. First operand 108 states and 171 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:27,274 INFO L93 Difference]: Finished difference Result 348 states and 552 transitions. [2025-03-03 20:16:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 20:16:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2025-03-03 20:16:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:27,282 INFO L225 Difference]: With dead ends: 348 [2025-03-03 20:16:27,282 INFO L226 Difference]: Without dead ends: 243 [2025-03-03 20:16:27,283 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 [2025-03-03 20:16:27,284 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 171 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:27,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 517 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 20:16:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-03-03 20:16:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 213. [2025-03-03 20:16:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 144 states have (on average 1.4375) internal successors, (207), 144 states have internal predecessors, (207), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-03 20:16:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 339 transitions. [2025-03-03 20:16:27,330 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 339 transitions. Word has length 212 [2025-03-03 20:16:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:27,330 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 339 transitions. [2025-03-03 20:16:27,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 339 transitions. [2025-03-03 20:16:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-03-03 20:16:27,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:27,335 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:27,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 20:16:27,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:27,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1426830328, now seen corresponding path program 1 times [2025-03-03 20:16:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:27,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940894061] [2025-03-03 20:16:27,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:27,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-03-03 20:16:27,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-03-03 20:16:27,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:27,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:27,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940894061] [2025-03-03 20:16:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940894061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:27,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 20:16:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402575854] [2025-03-03 20:16:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:27,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 20:16:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:27,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 20:16:27,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 20:16:27,656 INFO L87 Difference]: Start difference. First operand 213 states and 339 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:28,011 INFO L93 Difference]: Finished difference Result 628 states and 1000 transitions. [2025-03-03 20:16:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 20:16:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2025-03-03 20:16:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:28,017 INFO L225 Difference]: With dead ends: 628 [2025-03-03 20:16:28,018 INFO L226 Difference]: Without dead ends: 418 [2025-03-03 20:16:28,019 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 [2025-03-03 20:16:28,021 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 196 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:28,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 654 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 20:16:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2025-03-03 20:16:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 217. [2025-03-03 20:16:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 148 states have (on average 1.4256756756756757) internal successors, (211), 148 states have internal predecessors, (211), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-03 20:16:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2025-03-03 20:16:28,081 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 213 [2025-03-03 20:16:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:28,082 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2025-03-03 20:16:28,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2025-03-03 20:16:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 20:16:28,086 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:28,086 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:28,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 20:16:28,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:28,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1344201859, now seen corresponding path program 1 times [2025-03-03 20:16:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:28,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254940008] [2025-03-03 20:16:28,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:28,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 20:16:28,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 20:16:28,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:28,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:28,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:28,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254940008] [2025-03-03 20:16:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254940008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:28,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 20:16:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462578039] [2025-03-03 20:16:28,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:28,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 20:16:28,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:28,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 20:16:28,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 20:16:28,693 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:29,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:29,014 INFO L93 Difference]: Finished difference Result 569 states and 897 transitions. [2025-03-03 20:16:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 20:16:29,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-03-03 20:16:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:29,018 INFO L225 Difference]: With dead ends: 569 [2025-03-03 20:16:29,018 INFO L226 Difference]: Without dead ends: 355 [2025-03-03 20:16:29,019 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 [2025-03-03 20:16:29,020 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 124 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:29,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 438 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 20:16:29,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-03-03 20:16:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 299. [2025-03-03 20:16:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 196 states have (on average 1.4081632653061225) internal successors, (276), 196 states have internal predecessors, (276), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 20:16:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 474 transitions. [2025-03-03 20:16:29,076 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 474 transitions. Word has length 214 [2025-03-03 20:16:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:29,077 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 474 transitions. [2025-03-03 20:16:29,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 474 transitions. [2025-03-03 20:16:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 20:16:29,079 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:29,079 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:29,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 20:16:29,079 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:29,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1849760484, now seen corresponding path program 1 times [2025-03-03 20:16:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:29,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971601741] [2025-03-03 20:16:29,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:29,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 20:16:29,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 20:16:29,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:29,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971601741] [2025-03-03 20:16:31,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971601741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:31,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:31,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 20:16:31,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601304310] [2025-03-03 20:16:31,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:31,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 20:16:31,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:31,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 20:16:31,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 20:16:31,189 INFO L87 Difference]: Start difference. First operand 299 states and 474 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:31,717 INFO L93 Difference]: Finished difference Result 577 states and 907 transitions. [2025-03-03 20:16:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 20:16:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-03-03 20:16:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:31,720 INFO L225 Difference]: With dead ends: 577 [2025-03-03 20:16:31,720 INFO L226 Difference]: Without dead ends: 363 [2025-03-03 20:16:31,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-03-03 20:16:31,721 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 182 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:31,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 580 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 20:16:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2025-03-03 20:16:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 305. [2025-03-03 20:16:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 202 states have (on average 1.4059405940594059) internal successors, (284), 202 states have internal predecessors, (284), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 20:16:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 482 transitions. [2025-03-03 20:16:31,773 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 482 transitions. Word has length 214 [2025-03-03 20:16:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:31,773 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 482 transitions. [2025-03-03 20:16:31,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 482 transitions. [2025-03-03 20:16:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 20:16:31,776 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:31,776 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:31,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 20:16:31,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:31,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash 300185791, now seen corresponding path program 1 times [2025-03-03 20:16:31,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:31,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276166607] [2025-03-03 20:16:31,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:31,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 20:16:31,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 20:16:31,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:31,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:34,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276166607] [2025-03-03 20:16:34,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276166607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:34,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:34,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-03 20:16:34,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564874288] [2025-03-03 20:16:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:34,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 20:16:34,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:34,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 20:16:34,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-03 20:16:34,068 INFO L87 Difference]: Start difference. First operand 305 states and 482 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:35,848 INFO L93 Difference]: Finished difference Result 769 states and 1173 transitions. [2025-03-03 20:16:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-03 20:16:35,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-03-03 20:16:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:35,852 INFO L225 Difference]: With dead ends: 769 [2025-03-03 20:16:35,852 INFO L226 Difference]: Without dead ends: 555 [2025-03-03 20:16:35,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-03-03 20:16:35,856 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 360 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:35,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 946 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 20:16:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2025-03-03 20:16:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 394. [2025-03-03 20:16:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 279 states have (on average 1.3942652329749103) internal successors, (389), 281 states have internal predecessors, (389), 109 states have call successors, (109), 5 states have call predecessors, (109), 5 states have return successors, (109), 107 states have call predecessors, (109), 109 states have call successors, (109) [2025-03-03 20:16:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 607 transitions. [2025-03-03 20:16:35,908 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 607 transitions. Word has length 214 [2025-03-03 20:16:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:35,908 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 607 transitions. [2025-03-03 20:16:35,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 607 transitions. [2025-03-03 20:16:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 20:16:35,910 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:35,911 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:35,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 20:16:35,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:35,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1187689472, now seen corresponding path program 1 times [2025-03-03 20:16:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:35,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274071760] [2025-03-03 20:16:35,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:35,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 20:16:35,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 20:16:35,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:35,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:37,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:37,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274071760] [2025-03-03 20:16:37,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274071760] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:37,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:37,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 20:16:37,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498394035] [2025-03-03 20:16:37,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:37,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 20:16:37,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:37,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 20:16:37,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-03 20:16:37,612 INFO L87 Difference]: Start difference. First operand 394 states and 607 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:38,659 INFO L93 Difference]: Finished difference Result 958 states and 1438 transitions. [2025-03-03 20:16:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 20:16:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-03-03 20:16:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:38,666 INFO L225 Difference]: With dead ends: 958 [2025-03-03 20:16:38,666 INFO L226 Difference]: Without dead ends: 659 [2025-03-03 20:16:38,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-03 20:16:38,667 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 374 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:38,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 684 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 20:16:38,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-03 20:16:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 445. [2025-03-03 20:16:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 330 states have (on average 1.3848484848484848) internal successors, (457), 332 states have internal predecessors, (457), 109 states have call successors, (109), 5 states have call predecessors, (109), 5 states have return successors, (109), 107 states have call predecessors, (109), 109 states have call successors, (109) [2025-03-03 20:16:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 675 transitions. [2025-03-03 20:16:38,717 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 675 transitions. Word has length 214 [2025-03-03 20:16:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:38,717 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 675 transitions. [2025-03-03 20:16:38,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 675 transitions. [2025-03-03 20:16:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 20:16:38,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:38,720 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:38,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 20:16:38,720 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:38,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1507268672, now seen corresponding path program 1 times [2025-03-03 20:16:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539276654] [2025-03-03 20:16:38,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:38,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 20:16:38,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 20:16:38,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:38,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:40,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539276654] [2025-03-03 20:16:40,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539276654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:40,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:40,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 20:16:40,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327726255] [2025-03-03 20:16:40,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:40,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 20:16:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:40,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 20:16:40,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-03 20:16:40,710 INFO L87 Difference]: Start difference. First operand 445 states and 675 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:41,358 INFO L93 Difference]: Finished difference Result 1030 states and 1521 transitions. [2025-03-03 20:16:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 20:16:41,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-03-03 20:16:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:41,362 INFO L225 Difference]: With dead ends: 1030 [2025-03-03 20:16:41,362 INFO L226 Difference]: Without dead ends: 682 [2025-03-03 20:16:41,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-03 20:16:41,364 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 318 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:41,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 689 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 20:16:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-03-03 20:16:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 554. [2025-03-03 20:16:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 439 states have (on average 1.3781321184510251) internal successors, (605), 441 states have internal predecessors, (605), 109 states have call successors, (109), 5 states have call predecessors, (109), 5 states have return successors, (109), 107 states have call predecessors, (109), 109 states have call successors, (109) [2025-03-03 20:16:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 823 transitions. [2025-03-03 20:16:41,406 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 823 transitions. Word has length 214 [2025-03-03 20:16:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:41,407 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 823 transitions. [2025-03-03 20:16:41,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 823 transitions. [2025-03-03 20:16:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 20:16:41,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:41,409 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:41,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 20:16:41,410 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:41,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -210348386, now seen corresponding path program 1 times [2025-03-03 20:16:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:41,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318302231] [2025-03-03 20:16:41,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:41,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 20:16:41,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 20:16:41,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:41,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:16:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:16:43,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:16:43,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318302231] [2025-03-03 20:16:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318302231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:16:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:16:43,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-03 20:16:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346718893] [2025-03-03 20:16:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:16:43,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 20:16:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:16:43,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 20:16:43,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-03 20:16:43,172 INFO L87 Difference]: Start difference. First operand 554 states and 823 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:16:45,099 INFO L93 Difference]: Finished difference Result 936 states and 1397 transitions. [2025-03-03 20:16:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-03 20:16:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-03-03 20:16:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:16:45,103 INFO L225 Difference]: With dead ends: 936 [2025-03-03 20:16:45,103 INFO L226 Difference]: Without dead ends: 784 [2025-03-03 20:16:45,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-03-03 20:16:45,104 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 491 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 20:16:45,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1622 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 20:16:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2025-03-03 20:16:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 681. [2025-03-03 20:16:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 532 states have (on average 1.3778195488721805) internal successors, (733), 534 states have internal predecessors, (733), 142 states have call successors, (142), 6 states have call predecessors, (142), 6 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-03 20:16:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1017 transitions. [2025-03-03 20:16:45,150 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1017 transitions. Word has length 214 [2025-03-03 20:16:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:16:45,151 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1017 transitions. [2025-03-03 20:16:45,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:16:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1017 transitions. [2025-03-03 20:16:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-03-03 20:16:45,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:16:45,153 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:16:45,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 20:16:45,153 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:16:45,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:16:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1127235667, now seen corresponding path program 1 times [2025-03-03 20:16:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:16:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763476769] [2025-03-03 20:16:45,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:16:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:16:45,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-03 20:16:45,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-03 20:16:45,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:16:45,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:17:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:17:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:17:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763476769] [2025-03-03 20:17:13,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763476769] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:17:13,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:17:13,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-03 20:17:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717689447] [2025-03-03 20:17:13,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:17:13,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 20:17:13,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:17:13,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 20:17:13,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-03 20:17:13,866 INFO L87 Difference]: Start difference. First operand 681 states and 1017 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:17:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:17:14,350 INFO L93 Difference]: Finished difference Result 1396 states and 2084 transitions. [2025-03-03 20:17:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 20:17:14,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2025-03-03 20:17:14,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:17:14,357 INFO L225 Difference]: With dead ends: 1396 [2025-03-03 20:17:14,357 INFO L226 Difference]: Without dead ends: 993 [2025-03-03 20:17:14,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-03-03 20:17:14,358 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 218 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 20:17:14,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1277 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 20:17:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2025-03-03 20:17:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 676. [2025-03-03 20:17:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 532 states have (on average 1.387218045112782) internal successors, (738), 533 states have internal predecessors, (738), 137 states have call successors, (137), 6 states have call predecessors, (137), 6 states have return successors, (137), 136 states have call predecessors, (137), 137 states have call successors, (137) [2025-03-03 20:17:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1012 transitions. [2025-03-03 20:17:14,407 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1012 transitions. Word has length 215 [2025-03-03 20:17:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:17:14,407 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 1012 transitions. [2025-03-03 20:17:14,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:17:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1012 transitions. [2025-03-03 20:17:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-03-03 20:17:14,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:17:14,410 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:17:14,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 20:17:14,410 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:17:14,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:17:14,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1814421932, now seen corresponding path program 1 times [2025-03-03 20:17:14,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:17:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099968199] [2025-03-03 20:17:14,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:17:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:17:14,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-03 20:17:14,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-03 20:17:14,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:17:14,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:17:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 20:17:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:17:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099968199] [2025-03-03 20:17:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099968199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:17:42,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:17:42,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-03 20:17:42,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878934640] [2025-03-03 20:17:42,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:17:42,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 20:17:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:17:42,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 20:17:42,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-03 20:17:42,491 INFO L87 Difference]: Start difference. First operand 676 states and 1012 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:17:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:17:43,199 INFO L93 Difference]: Finished difference Result 1159 states and 1747 transitions. [2025-03-03 20:17:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 20:17:43,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2025-03-03 20:17:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:17:43,204 INFO L225 Difference]: With dead ends: 1159 [2025-03-03 20:17:43,204 INFO L226 Difference]: Without dead ends: 895 [2025-03-03 20:17:43,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-03-03 20:17:43,205 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 297 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 20:17:43,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 2001 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 20:17:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-03-03 20:17:43,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 644. [2025-03-03 20:17:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 505 states have (on average 1.388118811881188) internal successors, (701), 505 states have internal predecessors, (701), 132 states have call successors, (132), 6 states have call predecessors, (132), 6 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-03-03 20:17:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 965 transitions. [2025-03-03 20:17:43,258 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 965 transitions. Word has length 215 [2025-03-03 20:17:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:17:43,259 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 965 transitions. [2025-03-03 20:17:43,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 20:17:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 965 transitions. [2025-03-03 20:17:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-03-03 20:17:43,260 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:17:43,261 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:17:43,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 20:17:43,262 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:17:43,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:17:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash -210965010, now seen corresponding path program 1 times [2025-03-03 20:17:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:17:43,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113410358] [2025-03-03 20:17:43,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:17:43,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:17:43,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-03 20:17:43,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-03 20:17:43,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:17:43,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat