./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.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 372612807ec8a09625942983a4318ea5cf13bd58b55643cc4c787d7ad1a0ebc5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 23:44:52,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 23:44:52,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 23:44:52,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 23:44:52,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 23:44:52,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 23:44:52,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 23:44:52,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 23:44:52,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 23:44:52,331 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 23:44:52,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 23:44:52,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 23:44:52,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 23:44:52,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 23:44:52,332 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 23:44:52,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 23:44:52,333 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 23:44:52,334 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:44:52,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 23:44:52,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 23:44:52,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 23:44:52,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 23:44:52,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 23:44:52,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 23:44:52,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 23:44:52,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 23:44:52,335 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 -> 372612807ec8a09625942983a4318ea5cf13bd58b55643cc4c787d7ad1a0ebc5 [2025-03-16 23:44:52,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 23:44:52,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 23:44:52,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 23:44:52,615 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 23:44:52,615 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 23:44:52,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2025-03-16 23:44:53,813 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255479d74/46435e91855a4fcd80ea4122f007a375/FLAGce96b3202 [2025-03-16 23:44:54,054 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 23:44:54,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2025-03-16 23:44:54,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255479d74/46435e91855a4fcd80ea4122f007a375/FLAGce96b3202 [2025-03-16 23:44:54,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255479d74/46435e91855a4fcd80ea4122f007a375 [2025-03-16 23:44:54,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 23:44:54,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 23:44:54,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 23:44:54,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 23:44:54,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 23:44:54,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55dc65eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54, skipping insertion in model container [2025-03-16 23:44:54,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 23:44:54,212 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i[916,929] [2025-03-16 23:44:54,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:44:54,309 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 23:44:54,318 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i[916,929] [2025-03-16 23:44:54,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:44:54,383 INFO L204 MainTranslator]: Completed translation [2025-03-16 23:44:54,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54 WrapperNode [2025-03-16 23:44:54,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 23:44:54,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 23:44:54,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 23:44:54,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 23:44:54,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,451 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 324 [2025-03-16 23:44:54,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 23:44:54,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 23:44:54,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 23:44:54,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 23:44:54,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,494 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 23:44:54,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,510 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 23:44:54,526 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 23:44:54,526 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 23:44:54,526 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 23:44:54,528 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (1/1) ... [2025-03-16 23:44:54,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:44:54,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:44:54,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 23:44:54,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 23:44:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 23:44:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 23:44:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 23:44:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 23:44:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 23:44:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 23:44:54,663 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 23:44:54,664 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 23:44:55,152 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-16 23:44:55,152 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 23:44:55,169 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 23:44:55,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 23:44:55,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:44:55 BoogieIcfgContainer [2025-03-16 23:44:55,171 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 23:44:55,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 23:44:55,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 23:44:55,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 23:44:55,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 11:44:54" (1/3) ... [2025-03-16 23:44:55,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6361fb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:44:55, skipping insertion in model container [2025-03-16 23:44:55,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:44:54" (2/3) ... [2025-03-16 23:44:55,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6361fb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:44:55, skipping insertion in model container [2025-03-16 23:44:55,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:44:55" (3/3) ... [2025-03-16 23:44:55,179 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2025-03-16 23:44:55,190 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 23:44:55,194 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i that has 2 procedures, 135 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 23:44:55,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 23:44:55,248 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;@75093317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 23:44:55,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 23:44:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 75 states have (on average 1.44) internal successors, (108), 76 states have internal predecessors, (108), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-16 23:44:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2025-03-16 23:44:55,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:44:55,272 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:44:55,272 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:44:55,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:44:55,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1953727649, now seen corresponding path program 1 times [2025-03-16 23:44:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:44:55,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628653845] [2025-03-16 23:44:55,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:44:55,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:44:55,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 344 statements into 1 equivalence classes. [2025-03-16 23:44:55,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 344 of 344 statements. [2025-03-16 23:44:55,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:44:55,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:44:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2025-03-16 23:44:55,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:44:55,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628653845] [2025-03-16 23:44:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628653845] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:44:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265742291] [2025-03-16 23:44:55,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:44:55,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:44:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:44:55,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 23:44:55,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 23:44:55,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 344 statements into 1 equivalence classes. [2025-03-16 23:44:55,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 344 of 344 statements. [2025-03-16 23:44:55,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:44:55,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:44:55,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 23:44:55,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 23:44:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2025-03-16 23:44:55,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 23:44:55,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265742291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:44:55,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 23:44:55,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 23:44:55,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569273467] [2025-03-16 23:44:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:44:55,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 23:44:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:44:55,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 23:44:55,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:44:55,962 INFO L87 Difference]: Start difference. First operand has 135 states, 75 states have (on average 1.44) internal successors, (108), 76 states have internal predecessors, (108), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2025-03-16 23:44:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:44:55,996 INFO L93 Difference]: Finished difference Result 267 states and 499 transitions. [2025-03-16 23:44:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 23:44:55,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 344 [2025-03-16 23:44:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:44:56,003 INFO L225 Difference]: With dead ends: 267 [2025-03-16 23:44:56,003 INFO L226 Difference]: Without dead ends: 133 [2025-03-16 23:44:56,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:44:56,008 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:44:56,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:44:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-03-16 23:44:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2025-03-16 23:44:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 74 states have internal predecessors, (104), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-16 23:44:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 218 transitions. [2025-03-16 23:44:56,054 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 218 transitions. Word has length 344 [2025-03-16 23:44:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:44:56,055 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 218 transitions. [2025-03-16 23:44:56,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2025-03-16 23:44:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 218 transitions. [2025-03-16 23:44:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2025-03-16 23:44:56,063 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:44:56,063 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:44:56,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 23:44:56,264 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 [2025-03-16 23:44:56,264 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:44:56,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:44:56,265 INFO L85 PathProgramCache]: Analyzing trace with hash -272986596, now seen corresponding path program 1 times [2025-03-16 23:44:56,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:44:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731658148] [2025-03-16 23:44:56,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:44:56,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:44:56,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 344 statements into 1 equivalence classes. [2025-03-16 23:44:56,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 344 of 344 statements. [2025-03-16 23:44:56,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:44:56,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:44:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-16 23:44:56,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:44:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731658148] [2025-03-16 23:44:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731658148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:44:56,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:44:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:44:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123972841] [2025-03-16 23:44:56,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:44:56,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:44:56,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:44:56,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:44:56,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:44:56,544 INFO L87 Difference]: Start difference. First operand 133 states and 218 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:44:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:44:56,615 INFO L93 Difference]: Finished difference Result 357 states and 584 transitions. [2025-03-16 23:44:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:44:56,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 344 [2025-03-16 23:44:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:44:56,618 INFO L225 Difference]: With dead ends: 357 [2025-03-16 23:44:56,621 INFO L226 Difference]: Without dead ends: 225 [2025-03-16 23:44:56,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:44:56,625 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 142 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:44:56,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 525 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:44:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-16 23:44:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2025-03-16 23:44:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 124 states have (on average 1.3951612903225807) internal successors, (173), 125 states have internal predecessors, (173), 95 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-16 23:44:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 363 transitions. [2025-03-16 23:44:56,663 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 363 transitions. Word has length 344 [2025-03-16 23:44:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:44:56,664 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 363 transitions. [2025-03-16 23:44:56,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:44:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 363 transitions. [2025-03-16 23:44:56,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-03-16 23:44:56,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:44:56,670 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:44:56,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 23:44:56,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:44:56,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:44:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2096110148, now seen corresponding path program 1 times [2025-03-16 23:44:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:44:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870258006] [2025-03-16 23:44:56,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:44:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:44:56,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-03-16 23:44:56,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-03-16 23:44:56,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:44:56,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:44:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-16 23:44:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:44:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870258006] [2025-03-16 23:44:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870258006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:44:56,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:44:56,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:44:56,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126565880] [2025-03-16 23:44:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:44:56,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:44:56,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:44:56,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:44:56,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:44:56,911 INFO L87 Difference]: Start difference. First operand 222 states and 363 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:44:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:44:56,963 INFO L93 Difference]: Finished difference Result 450 states and 730 transitions. [2025-03-16 23:44:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:44:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 345 [2025-03-16 23:44:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:44:56,967 INFO L225 Difference]: With dead ends: 450 [2025-03-16 23:44:56,967 INFO L226 Difference]: Without dead ends: 229 [2025-03-16 23:44:56,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:44:56,968 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 138 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:44:56,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 423 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:44:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-03-16 23:44:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 150. [2025-03-16 23:44:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-16 23:44:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 242 transitions. [2025-03-16 23:44:56,982 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 242 transitions. Word has length 345 [2025-03-16 23:44:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:44:56,982 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 242 transitions. [2025-03-16 23:44:56,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:44:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 242 transitions. [2025-03-16 23:44:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-03-16 23:44:56,985 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:44:56,986 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:44:56,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 23:44:56,986 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:44:56,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:44:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1381111524, now seen corresponding path program 1 times [2025-03-16 23:44:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:44:56,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465455452] [2025-03-16 23:44:56,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:44:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:44:57,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-03-16 23:44:57,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-03-16 23:44:57,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:44:57,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:44:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-16 23:44:58,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:44:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465455452] [2025-03-16 23:44:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465455452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:44:58,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:44:58,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 23:44:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539430241] [2025-03-16 23:44:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:44:58,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 23:44:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:44:58,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 23:44:58,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:44:58,085 INFO L87 Difference]: Start difference. First operand 150 states and 242 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:44:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:44:58,172 INFO L93 Difference]: Finished difference Result 337 states and 535 transitions. [2025-03-16 23:44:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 23:44:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 345 [2025-03-16 23:44:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:44:58,174 INFO L225 Difference]: With dead ends: 337 [2025-03-16 23:44:58,174 INFO L226 Difference]: Without dead ends: 188 [2025-03-16 23:44:58,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:44:58,176 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 64 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 23:44:58,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 653 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 23:44:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-03-16 23:44:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2025-03-16 23:44:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.4181818181818182) internal successors, (156), 111 states have internal predecessors, (156), 61 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-16 23:44:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 278 transitions. [2025-03-16 23:44:58,203 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 278 transitions. Word has length 345 [2025-03-16 23:44:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:44:58,204 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 278 transitions. [2025-03-16 23:44:58,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:44:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 278 transitions. [2025-03-16 23:44:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-03-16 23:44:58,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:44:58,210 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:44:58,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 23:44:58,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:44:58,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:44:58,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2026352091, now seen corresponding path program 1 times [2025-03-16 23:44:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:44:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097294562] [2025-03-16 23:44:58,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:44:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:44:58,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-03-16 23:44:58,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-03-16 23:44:58,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:44:58,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:45:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-16 23:45:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:45:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097294562] [2025-03-16 23:45:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097294562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:45:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:45:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-16 23:45:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19927620] [2025-03-16 23:45:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:45:05,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 23:45:05,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:45:05,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 23:45:05,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2025-03-16 23:45:05,654 INFO L87 Difference]: Start difference. First operand 175 states and 278 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:45:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:45:06,251 INFO L93 Difference]: Finished difference Result 384 states and 600 transitions. [2025-03-16 23:45:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-16 23:45:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 345 [2025-03-16 23:45:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:45:06,257 INFO L225 Difference]: With dead ends: 384 [2025-03-16 23:45:06,257 INFO L226 Difference]: Without dead ends: 210 [2025-03-16 23:45:06,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-03-16 23:45:06,261 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 72 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 23:45:06,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1171 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 23:45:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-03-16 23:45:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 181. [2025-03-16 23:45:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 117 states have internal predecessors, (163), 61 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-16 23:45:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 285 transitions. [2025-03-16 23:45:06,283 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 285 transitions. Word has length 345 [2025-03-16 23:45:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:45:06,283 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 285 transitions. [2025-03-16 23:45:06,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-16 23:45:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 285 transitions. [2025-03-16 23:45:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-03-16 23:45:06,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:45:06,286 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:45:06,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 23:45:06,287 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:45:06,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:45:06,288 INFO L85 PathProgramCache]: Analyzing trace with hash -283541756, now seen corresponding path program 1 times [2025-03-16 23:45:06,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:45:06,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351635788] [2025-03-16 23:45:06,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:45:06,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:45:06,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-03-16 23:45:06,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-03-16 23:45:06,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:45:06,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat