./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-27.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 c02d96b2e66c5d16a70019b8ee62d80e443fba6c783a0dd61954285e06f10d7d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 02:41:29,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 02:41:29,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 02:41:29,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 02:41:29,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 02:41:29,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 02:41:29,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 02:41:29,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 02:41:29,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 02:41:29,141 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 02:41:29,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 02:41:29,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 02:41:29,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 02:41:29,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 02:41:29,143 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 02:41:29,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 02:41:29,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 02:41:29,143 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 -> c02d96b2e66c5d16a70019b8ee62d80e443fba6c783a0dd61954285e06f10d7d [2025-03-17 02:41:29,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 02:41:29,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 02:41:29,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 02:41:29,382 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 02:41:29,382 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 02:41:29,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-27.i [2025-03-17 02:41:30,495 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b432d48/456bbe2e1315414eb6111bfb3a8b2ba8/FLAGfdd412227 [2025-03-17 02:41:30,713 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 02:41:30,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-27.i [2025-03-17 02:41:30,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b432d48/456bbe2e1315414eb6111bfb3a8b2ba8/FLAGfdd412227 [2025-03-17 02:41:31,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b432d48/456bbe2e1315414eb6111bfb3a8b2ba8 [2025-03-17 02:41:31,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 02:41:31,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 02:41:31,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 02:41:31,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 02:41:31,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 02:41:31,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22da2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31, skipping insertion in model container [2025-03-17 02:41:31,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,080 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 02:41:31,185 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_floatingpointinfluence_has-floats_file-27.i[917,930] [2025-03-17 02:41:31,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 02:41:31,230 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 02:41:31,239 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_floatingpointinfluence_has-floats_file-27.i[917,930] [2025-03-17 02:41:31,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 02:41:31,275 INFO L204 MainTranslator]: Completed translation [2025-03-17 02:41:31,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31 WrapperNode [2025-03-17 02:41:31,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 02:41:31,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 02:41:31,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 02:41:31,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 02:41:31,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,313 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 105 [2025-03-17 02:41:31,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 02:41:31,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 02:41:31,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 02:41:31,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 02:41:31,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,334 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 02:41:31,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,336 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 02:41:31,340 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 02:41:31,340 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 02:41:31,340 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 02:41:31,341 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (1/1) ... [2025-03-17 02:41:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 02:41:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 02:41:31,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 02:41:31,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 02:41:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 02:41:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 02:41:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 02:41:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 02:41:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 02:41:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 02:41:31,430 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 02:41:31,431 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 02:41:31,600 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-17 02:41:31,600 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 02:41:31,612 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 02:41:31,613 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 02:41:31,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:41:31 BoogieIcfgContainer [2025-03-17 02:41:31,613 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 02:41:31,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 02:41:31,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 02:41:31,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 02:41:31,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:41:31" (1/3) ... [2025-03-17 02:41:31,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a12e640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:41:31, skipping insertion in model container [2025-03-17 02:41:31,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:41:31" (2/3) ... [2025-03-17 02:41:31,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a12e640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:41:31, skipping insertion in model container [2025-03-17 02:41:31,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:41:31" (3/3) ... [2025-03-17 02:41:31,621 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-27.i [2025-03-17 02:41:31,634 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 02:41:31,635 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_has-floats_file-27.i that has 2 procedures, 47 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 02:41:31,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 02:41:31,686 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;@612f3b14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 02:41:31,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 02:41:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 28 states have internal predecessors, (37), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 02:41:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-17 02:41:31,701 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:31,701 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:31,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:31,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1169342660, now seen corresponding path program 1 times [2025-03-17 02:41:31,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651645828] [2025-03-17 02:41:31,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:31,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-17 02:41:31,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 02:41:31,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:31,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-17 02:41:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:31,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651645828] [2025-03-17 02:41:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651645828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 02:41:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579343589] [2025-03-17 02:41:31,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:31,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 02:41:31,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 02:41:31,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 02:41:31,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 02:41:31,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-17 02:41:31,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 02:41:31,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:32,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:32,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 02:41:32,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 02:41:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-17 02:41:32,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 02:41:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579343589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:32,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 02:41:32,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 02:41:32,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744082266] [2025-03-17 02:41:32,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:32,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 02:41:32,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:32,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 02:41:32,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 02:41:32,052 INFO L87 Difference]: Start difference. First operand has 47 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 28 states have internal predecessors, (37), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 02:41:32,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:32,067 INFO L93 Difference]: Finished difference Result 91 states and 157 transitions. [2025-03-17 02:41:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 02:41:32,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 105 [2025-03-17 02:41:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:32,073 INFO L225 Difference]: With dead ends: 91 [2025-03-17 02:41:32,073 INFO L226 Difference]: Without dead ends: 45 [2025-03-17 02:41:32,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 02:41:32,079 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:32,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 02:41:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-17 02:41:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-03-17 02:41:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 02:41:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 67 transitions. [2025-03-17 02:41:32,109 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 67 transitions. Word has length 105 [2025-03-17 02:41:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:32,109 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 67 transitions. [2025-03-17 02:41:32,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 02:41:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 67 transitions. [2025-03-17 02:41:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-17 02:41:32,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:32,120 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:32,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 02:41:32,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 02:41:32,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:32,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1105361115, now seen corresponding path program 1 times [2025-03-17 02:41:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071046473] [2025-03-17 02:41:32,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:32,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-17 02:41:32,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 02:41:32,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:32,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071046473] [2025-03-17 02:41:35,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071046473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:35,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:35,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 02:41:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617428938] [2025-03-17 02:41:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:35,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 02:41:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:35,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 02:41:35,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-17 02:41:35,788 INFO L87 Difference]: Start difference. First operand 45 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:36,407 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2025-03-17 02:41:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 02:41:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 105 [2025-03-17 02:41:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:36,411 INFO L225 Difference]: With dead ends: 92 [2025-03-17 02:41:36,411 INFO L226 Difference]: Without dead ends: 90 [2025-03-17 02:41:36,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-17 02:41:36,412 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 60 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:36,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 349 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 02:41:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-03-17 02:41:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 58. [2025-03-17 02:41:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 02:41:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2025-03-17 02:41:36,428 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 105 [2025-03-17 02:41:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:36,428 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2025-03-17 02:41:36,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2025-03-17 02:41:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-17 02:41:36,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:36,430 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:36,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 02:41:36,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:36,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:36,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1133990266, now seen corresponding path program 1 times [2025-03-17 02:41:36,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:36,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734426031] [2025-03-17 02:41:36,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:36,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-17 02:41:36,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 02:41:36,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:36,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:38,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734426031] [2025-03-17 02:41:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734426031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:38,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:38,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 02:41:38,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198318171] [2025-03-17 02:41:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:38,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 02:41:38,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:38,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 02:41:38,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-17 02:41:38,133 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:38,382 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2025-03-17 02:41:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 02:41:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 105 [2025-03-17 02:41:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:38,384 INFO L225 Difference]: With dead ends: 84 [2025-03-17 02:41:38,384 INFO L226 Difference]: Without dead ends: 82 [2025-03-17 02:41:38,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-17 02:41:38,384 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 67 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:38,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 198 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 02:41:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-03-17 02:41:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 58. [2025-03-17 02:41:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 02:41:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2025-03-17 02:41:38,392 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 105 [2025-03-17 02:41:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:38,392 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2025-03-17 02:41:38,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2025-03-17 02:41:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 02:41:38,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:38,393 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:38,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 02:41:38,394 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:38,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1518098697, now seen corresponding path program 1 times [2025-03-17 02:41:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001350071] [2025-03-17 02:41:38,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:38,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 02:41:38,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 02:41:38,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:38,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:40,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001350071] [2025-03-17 02:41:40,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001350071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:40,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:40,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 02:41:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347691737] [2025-03-17 02:41:40,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:40,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 02:41:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:40,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 02:41:40,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-17 02:41:40,127 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:40,626 INFO L93 Difference]: Finished difference Result 185 states and 258 transitions. [2025-03-17 02:41:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 02:41:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 106 [2025-03-17 02:41:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:40,628 INFO L225 Difference]: With dead ends: 185 [2025-03-17 02:41:40,628 INFO L226 Difference]: Without dead ends: 131 [2025-03-17 02:41:40,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2025-03-17 02:41:40,629 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 91 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:40,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 250 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 02:41:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-17 02:41:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2025-03-17 02:41:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 71 states have internal predecessors, (86), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2025-03-17 02:41:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 158 transitions. [2025-03-17 02:41:40,650 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 158 transitions. Word has length 106 [2025-03-17 02:41:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:40,650 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 158 transitions. [2025-03-17 02:41:40,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 158 transitions. [2025-03-17 02:41:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 02:41:40,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:40,651 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:40,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 02:41:40,652 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:40,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1546727848, now seen corresponding path program 1 times [2025-03-17 02:41:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127358590] [2025-03-17 02:41:40,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:40,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 02:41:40,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 02:41:40,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:40,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127358590] [2025-03-17 02:41:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127358590] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:40,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 02:41:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322449414] [2025-03-17 02:41:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:40,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 02:41:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:40,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 02:41:40,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 02:41:40,700 INFO L87 Difference]: Start difference. First operand 111 states and 158 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:40,725 INFO L93 Difference]: Finished difference Result 263 states and 374 transitions. [2025-03-17 02:41:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 02:41:40,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 106 [2025-03-17 02:41:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:40,728 INFO L225 Difference]: With dead ends: 263 [2025-03-17 02:41:40,728 INFO L226 Difference]: Without dead ends: 156 [2025-03-17 02:41:40,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 02:41:40,729 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 28 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:40,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 199 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 02:41:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-17 02:41:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-03-17 02:41:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 97 states have internal predecessors, (115), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-17 02:41:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 221 transitions. [2025-03-17 02:41:40,745 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 221 transitions. Word has length 106 [2025-03-17 02:41:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:40,745 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 221 transitions. [2025-03-17 02:41:40,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 221 transitions. [2025-03-17 02:41:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 02:41:40,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:40,746 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:40,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 02:41:40,747 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:40,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:40,747 INFO L85 PathProgramCache]: Analyzing trace with hash -92588535, now seen corresponding path program 1 times [2025-03-17 02:41:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:40,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214458404] [2025-03-17 02:41:40,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:40,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:40,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 02:41:40,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 02:41:40,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:40,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214458404] [2025-03-17 02:41:47,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214458404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:47,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:47,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 02:41:47,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354236282] [2025-03-17 02:41:47,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:47,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 02:41:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:47,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 02:41:47,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-17 02:41:47,519 INFO L87 Difference]: Start difference. First operand 156 states and 221 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-17 02:41:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:50,838 INFO L93 Difference]: Finished difference Result 254 states and 341 transitions. [2025-03-17 02:41:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 02:41:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 106 [2025-03-17 02:41:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:50,840 INFO L225 Difference]: With dead ends: 254 [2025-03-17 02:41:50,840 INFO L226 Difference]: Without dead ends: 252 [2025-03-17 02:41:50,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2025-03-17 02:41:50,841 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 152 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:50,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 233 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 02:41:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-03-17 02:41:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 167. [2025-03-17 02:41:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-17 02:41:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 238 transitions. [2025-03-17 02:41:50,866 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 238 transitions. Word has length 106 [2025-03-17 02:41:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:50,866 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 238 transitions. [2025-03-17 02:41:50,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-17 02:41:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 238 transitions. [2025-03-17 02:41:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 02:41:50,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:50,869 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:50,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 02:41:50,869 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:50,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash 794915146, now seen corresponding path program 1 times [2025-03-17 02:41:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:50,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395525240] [2025-03-17 02:41:50,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:50,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 02:41:50,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 02:41:50,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:50,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395525240] [2025-03-17 02:41:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395525240] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:54,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:54,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 02:41:54,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778064307] [2025-03-17 02:41:54,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:54,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 02:41:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:54,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 02:41:54,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-17 02:41:54,491 INFO L87 Difference]: Start difference. First operand 167 states and 238 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:41:54,918 INFO L93 Difference]: Finished difference Result 199 states and 274 transitions. [2025-03-17 02:41:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 02:41:54,919 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 106 [2025-03-17 02:41:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:41:54,920 INFO L225 Difference]: With dead ends: 199 [2025-03-17 02:41:54,920 INFO L226 Difference]: Without dead ends: 197 [2025-03-17 02:41:54,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-17 02:41:54,921 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 73 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 02:41:54,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 277 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 02:41:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-03-17 02:41:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 170. [2025-03-17 02:41:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 111 states have internal predecessors, (137), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-17 02:41:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 243 transitions. [2025-03-17 02:41:54,946 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 243 transitions. Word has length 106 [2025-03-17 02:41:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:41:54,946 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 243 transitions. [2025-03-17 02:41:54,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:41:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 243 transitions. [2025-03-17 02:41:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 02:41:54,947 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:41:54,947 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:41:54,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 02:41:54,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:41:54,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:41:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash 794944937, now seen corresponding path program 1 times [2025-03-17 02:41:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:41:54,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145921438] [2025-03-17 02:41:54,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:41:54,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:41:54,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 02:41:54,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 02:41:54,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:41:54,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:41:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:41:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:41:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145921438] [2025-03-17 02:41:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145921438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:41:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:41:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 02:41:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689756508] [2025-03-17 02:41:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:41:58,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 02:41:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:41:58,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 02:41:58,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 02:41:58,884 INFO L87 Difference]: Start difference. First operand 170 states and 243 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:42:00,406 INFO L93 Difference]: Finished difference Result 196 states and 271 transitions. [2025-03-17 02:42:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 02:42:00,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 106 [2025-03-17 02:42:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:42:00,408 INFO L225 Difference]: With dead ends: 196 [2025-03-17 02:42:00,409 INFO L226 Difference]: Without dead ends: 194 [2025-03-17 02:42:00,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-17 02:42:00,409 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 53 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 02:42:00,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 331 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 02:42:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-03-17 02:42:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 167. [2025-03-17 02:42:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-17 02:42:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 238 transitions. [2025-03-17 02:42:00,429 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 238 transitions. Word has length 106 [2025-03-17 02:42:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:42:00,429 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 238 transitions. [2025-03-17 02:42:00,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 238 transitions. [2025-03-17 02:42:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 02:42:00,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:42:00,430 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:42:00,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 02:42:00,430 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:42:00,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:42:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1889539894, now seen corresponding path program 1 times [2025-03-17 02:42:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:42:00,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872257230] [2025-03-17 02:42:00,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:42:00,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 02:42:00,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 02:42:00,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:00,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:42:00,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:42:00,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872257230] [2025-03-17 02:42:00,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872257230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:42:00,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:42:00,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 02:42:00,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475987634] [2025-03-17 02:42:00,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:42:00,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 02:42:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:42:00,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 02:42:00,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 02:42:00,471 INFO L87 Difference]: Start difference. First operand 167 states and 238 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:42:00,505 INFO L93 Difference]: Finished difference Result 324 states and 453 transitions. [2025-03-17 02:42:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 02:42:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 106 [2025-03-17 02:42:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:42:00,509 INFO L225 Difference]: With dead ends: 324 [2025-03-17 02:42:00,509 INFO L226 Difference]: Without dead ends: 208 [2025-03-17 02:42:00,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 02:42:00,511 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 30 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 02:42:00,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 132 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 02:42:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-03-17 02:42:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2025-03-17 02:42:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 131 states have (on average 1.183206106870229) internal successors, (155), 133 states have internal predecessors, (155), 61 states have call successors, (61), 10 states have call predecessors, (61), 10 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-17 02:42:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 277 transitions. [2025-03-17 02:42:00,534 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 277 transitions. Word has length 106 [2025-03-17 02:42:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:42:00,534 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 277 transitions. [2025-03-17 02:42:00,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 277 transitions. [2025-03-17 02:42:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-17 02:42:00,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:42:00,536 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:42:00,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 02:42:00,536 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:42:00,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:42:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1624829082, now seen corresponding path program 1 times [2025-03-17 02:42:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:42:00,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69455331] [2025-03-17 02:42:00,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:42:00,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-17 02:42:00,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-17 02:42:00,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:00,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:42:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:42:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69455331] [2025-03-17 02:42:03,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69455331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:42:03,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:42:03,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 02:42:03,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921956617] [2025-03-17 02:42:03,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:42:03,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 02:42:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:42:03,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 02:42:03,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-17 02:42:03,946 INFO L87 Difference]: Start difference. First operand 203 states and 277 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:42:04,743 INFO L93 Difference]: Finished difference Result 328 states and 440 transitions. [2025-03-17 02:42:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 02:42:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2025-03-17 02:42:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:42:04,745 INFO L225 Difference]: With dead ends: 328 [2025-03-17 02:42:04,745 INFO L226 Difference]: Without dead ends: 181 [2025-03-17 02:42:04,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-03-17 02:42:04,747 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 87 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 02:42:04,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 326 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 02:42:04,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-17 02:42:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2025-03-17 02:42:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.183673469387755) internal successors, (116), 100 states have internal predecessors, (116), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 02:42:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 204 transitions. [2025-03-17 02:42:04,766 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 204 transitions. Word has length 107 [2025-03-17 02:42:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:42:04,766 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 204 transitions. [2025-03-17 02:42:04,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 204 transitions. [2025-03-17 02:42:04,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-17 02:42:04,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:42:04,767 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:42:04,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 02:42:04,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:42:04,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:42:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1624858873, now seen corresponding path program 1 times [2025-03-17 02:42:04,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:42:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672009144] [2025-03-17 02:42:04,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:42:04,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-17 02:42:04,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-17 02:42:04,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:04,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:42:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:42:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672009144] [2025-03-17 02:42:07,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672009144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:42:07,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:42:07,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 02:42:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621402548] [2025-03-17 02:42:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:42:07,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 02:42:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:42:07,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 02:42:07,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-17 02:42:07,645 INFO L87 Difference]: Start difference. First operand 150 states and 204 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:42:08,922 INFO L93 Difference]: Finished difference Result 181 states and 236 transitions. [2025-03-17 02:42:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 02:42:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2025-03-17 02:42:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:42:08,924 INFO L225 Difference]: With dead ends: 181 [2025-03-17 02:42:08,924 INFO L226 Difference]: Without dead ends: 179 [2025-03-17 02:42:08,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2025-03-17 02:42:08,925 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 87 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 02:42:08,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 305 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 02:42:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-17 02:42:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 149. [2025-03-17 02:42:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.175257731958763) internal successors, (114), 99 states have internal predecessors, (114), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 02:42:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2025-03-17 02:42:08,959 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 107 [2025-03-17 02:42:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:42:08,959 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2025-03-17 02:42:08,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2025-03-17 02:42:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-17 02:42:08,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:42:08,960 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:42:08,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 02:42:08,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:42:08,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:42:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1782634533, now seen corresponding path program 1 times [2025-03-17 02:42:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:42:08,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016179794] [2025-03-17 02:42:08,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:42:08,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-17 02:42:08,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-17 02:42:08,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:08,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:42:11,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:42:11,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016179794] [2025-03-17 02:42:11,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016179794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:42:11,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:42:11,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 02:42:11,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66706785] [2025-03-17 02:42:11,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:42:11,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 02:42:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:42:11,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 02:42:11,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-17 02:42:11,169 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 02:42:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:42:12,377 INFO L93 Difference]: Finished difference Result 181 states and 236 transitions. [2025-03-17 02:42:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 02:42:12,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 107 [2025-03-17 02:42:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:42:12,378 INFO L225 Difference]: With dead ends: 181 [2025-03-17 02:42:12,378 INFO L226 Difference]: Without dead ends: 179 [2025-03-17 02:42:12,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2025-03-17 02:42:12,379 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 121 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 02:42:12,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 306 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 02:42:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-17 02:42:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 149. [2025-03-17 02:42:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.175257731958763) internal successors, (114), 99 states have internal predecessors, (114), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 02:42:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2025-03-17 02:42:12,396 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 107 [2025-03-17 02:42:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:42:12,396 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2025-03-17 02:42:12,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 02:42:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2025-03-17 02:42:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-17 02:42:12,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:42:12,396 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:42:12,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 02:42:12,397 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:42:12,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:42:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1782604742, now seen corresponding path program 1 times [2025-03-17 02:42:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:42:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019285229] [2025-03-17 02:42:12,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:12,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:42:12,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-17 02:42:12,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-17 02:42:12,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:12,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 02:42:14,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:42:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019285229] [2025-03-17 02:42:14,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019285229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:42:14,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:42:14,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 02:42:14,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239135969] [2025-03-17 02:42:14,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:42:14,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 02:42:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:42:14,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 02:42:14,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-17 02:42:14,718 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:42:15,239 INFO L93 Difference]: Finished difference Result 179 states and 234 transitions. [2025-03-17 02:42:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 02:42:15,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2025-03-17 02:42:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:42:15,241 INFO L225 Difference]: With dead ends: 179 [2025-03-17 02:42:15,241 INFO L226 Difference]: Without dead ends: 177 [2025-03-17 02:42:15,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-03-17 02:42:15,242 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 66 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 02:42:15,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 374 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 02:42:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-17 02:42:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 144. [2025-03-17 02:42:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 94 states have internal predecessors, (107), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 02:42:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 195 transitions. [2025-03-17 02:42:15,261 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 195 transitions. Word has length 107 [2025-03-17 02:42:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:42:15,262 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 195 transitions. [2025-03-17 02:42:15,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 02:42:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 195 transitions. [2025-03-17 02:42:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-17 02:42:15,263 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:42:15,263 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:42:15,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 02:42:15,263 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:42:15,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:42:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1682553472, now seen corresponding path program 1 times [2025-03-17 02:42:15,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:42:15,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339110569] [2025-03-17 02:42:15,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:15,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:42:15,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-17 02:42:15,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-17 02:42:15,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:15,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-17 02:42:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:42:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339110569] [2025-03-17 02:42:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339110569] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 02:42:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920871061] [2025-03-17 02:42:16,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:42:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 02:42:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 02:42:16,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 02:42:16,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 02:42:16,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-17 02:42:16,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-17 02:42:16,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:42:16,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:42:16,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 02:42:16,579 INFO L279 TraceCheckSpWp]: Computing forward predicates...