./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label12.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2216b6fe23bc362f77d3473af93ca10876808f5c3f0da946e2005e7d4e8e688a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 10:41:22,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 10:41:22,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 10:41:23,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 10:41:23,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 10:41:23,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 10:41:23,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 10:41:23,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 10:41:23,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 10:41:23,023 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 10:41:23,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 10:41:23,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 10:41:23,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 10:41:23,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 10:41:23,025 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 10:41:23,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 10:41:23,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 10:41:23,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 10:41:23,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 10:41:23,026 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 -> 2216b6fe23bc362f77d3473af93ca10876808f5c3f0da946e2005e7d4e8e688a [2025-03-03 10:41:23,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 10:41:23,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 10:41:23,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 10:41:23,252 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 10:41:23,253 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 10:41:23,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label12.c [2025-03-03 10:41:24,418 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dde182c6/60e29511f0734115b402cb39132516d2/FLAGa798e4536 [2025-03-03 10:41:24,869 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 10:41:24,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label12.c [2025-03-03 10:41:24,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dde182c6/60e29511f0734115b402cb39132516d2/FLAGa798e4536 [2025-03-03 10:41:24,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dde182c6/60e29511f0734115b402cb39132516d2 [2025-03-03 10:41:24,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 10:41:24,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 10:41:24,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 10:41:24,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 10:41:24,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 10:41:24,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 10:41:24" (1/1) ... [2025-03-03 10:41:24,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dc73ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:24, skipping insertion in model container [2025-03-03 10:41:24,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 10:41:24" (1/1) ... [2025-03-03 10:41:24,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 10:41:25,189 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label12.c[1672,1685] [2025-03-03 10:41:25,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 10:41:25,698 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 10:41:25,708 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label12.c[1672,1685] [2025-03-03 10:41:26,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 10:41:26,022 INFO L204 MainTranslator]: Completed translation [2025-03-03 10:41:26,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26 WrapperNode [2025-03-03 10:41:26,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 10:41:26,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 10:41:26,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 10:41:26,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 10:41:26,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:26,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:26,497 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-03 10:41:26,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 10:41:26,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 10:41:26,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 10:41:26,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 10:41:26,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:26,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:26,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:26,794 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 10:41:26,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:26,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:27,008 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:27,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:27,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:27,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:27,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 10:41:27,153 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 10:41:27,154 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 10:41:27,154 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 10:41:27,154 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (1/1) ... [2025-03-03 10:41:27,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 10:41:27,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 10:41:27,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 10:41:27,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 10:41:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 10:41:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 10:41:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 10:41:27,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 10:41:27,286 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 10:41:27,287 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 10:41:31,312 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-03 10:41:31,313 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-03 10:41:31,313 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-03 10:41:31,428 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-03 10:41:31,428 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 10:41:31,458 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 10:41:31,458 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 10:41:31,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 10:41:31 BoogieIcfgContainer [2025-03-03 10:41:31,459 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 10:41:31,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 10:41:31,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 10:41:31,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 10:41:31,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 10:41:24" (1/3) ... [2025-03-03 10:41:31,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c55f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 10:41:31, skipping insertion in model container [2025-03-03 10:41:31,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:41:26" (2/3) ... [2025-03-03 10:41:31,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c55f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 10:41:31, skipping insertion in model container [2025-03-03 10:41:31,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 10:41:31" (3/3) ... [2025-03-03 10:41:31,466 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label12.c [2025-03-03 10:41:31,475 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 10:41:31,480 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label12.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 10:41:31,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 10:41:31,552 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;@34ec8c8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 10:41:31,552 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 10:41:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 10:41:31,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:31,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:31,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:31,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1391648518, now seen corresponding path program 1 times [2025-03-03 10:41:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:31,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780405037] [2025-03-03 10:41:31,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:31,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 10:41:31,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 10:41:31,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:31,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:41:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780405037] [2025-03-03 10:41:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780405037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:31,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:31,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:31,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096859111] [2025-03-03 10:41:31,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:31,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:31,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:31,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:31,749 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:35,000 INFO L93 Difference]: Finished difference Result 3147 states and 5803 transitions. [2025-03-03 10:41:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-03 10:41:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:35,024 INFO L225 Difference]: With dead ends: 3147 [2025-03-03 10:41:35,024 INFO L226 Difference]: Without dead ends: 1964 [2025-03-03 10:41:35,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:35,034 INFO L435 NwaCegarLoop]: 759 mSDtfsCounter, 1170 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:35,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 987 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-03 10:41:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2025-03-03 10:41:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2025-03-03 10:41:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2025-03-03 10:41:35,133 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 9 [2025-03-03 10:41:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:35,134 INFO L471 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2025-03-03 10:41:35,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2025-03-03 10:41:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-03 10:41:35,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:35,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:35,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 10:41:35,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:35,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash 606843999, now seen corresponding path program 1 times [2025-03-03 10:41:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730053149] [2025-03-03 10:41:35,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:35,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-03 10:41:35,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-03 10:41:35,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:35,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:41:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730053149] [2025-03-03 10:41:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730053149] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586569499] [2025-03-03 10:41:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:35,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:35,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:35,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:35,388 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:38,553 INFO L93 Difference]: Finished difference Result 5540 states and 9221 transitions. [2025-03-03 10:41:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:38,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-03-03 10:41:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:38,566 INFO L225 Difference]: With dead ends: 5540 [2025-03-03 10:41:38,566 INFO L226 Difference]: Without dead ends: 3591 [2025-03-03 10:41:38,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:38,568 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 923 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:38,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1008 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-03 10:41:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2025-03-03 10:41:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3581. [2025-03-03 10:41:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2025-03-03 10:41:38,637 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 80 [2025-03-03 10:41:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:38,638 INFO L471 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2025-03-03 10:41:38,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2025-03-03 10:41:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 10:41:38,641 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:38,642 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:38,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 10:41:38,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:38,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1839861318, now seen corresponding path program 1 times [2025-03-03 10:41:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540060967] [2025-03-03 10:41:38,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:38,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 10:41:38,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 10:41:38,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:38,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:41:38,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:38,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540060967] [2025-03-03 10:41:38,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540060967] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:38,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:38,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:38,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702621119] [2025-03-03 10:41:38,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:38,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:38,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:38,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:38,765 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:41,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:41,312 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2025-03-03 10:41:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:41,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-03 10:41:41,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:41,331 INFO L225 Difference]: With dead ends: 10352 [2025-03-03 10:41:41,331 INFO L226 Difference]: Without dead ends: 6773 [2025-03-03 10:41:41,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:41,338 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:41,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1171 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 10:41:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2025-03-03 10:41:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2025-03-03 10:41:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2025-03-03 10:41:41,432 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 94 [2025-03-03 10:41:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:41,434 INFO L471 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2025-03-03 10:41:41,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2025-03-03 10:41:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-03 10:41:41,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:41,437 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:41,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 10:41:41,437 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:41,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash -721119111, now seen corresponding path program 1 times [2025-03-03 10:41:41,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:41,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837931323] [2025-03-03 10:41:41,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:41,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-03 10:41:41,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-03 10:41:41,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:41,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:41:41,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:41,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837931323] [2025-03-03 10:41:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837931323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950768400] [2025-03-03 10:41:41,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:41,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:41,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:41,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:41,611 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:44,140 INFO L93 Difference]: Finished difference Result 19871 states and 26319 transitions. [2025-03-03 10:41:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2025-03-03 10:41:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:44,171 INFO L225 Difference]: With dead ends: 19871 [2025-03-03 10:41:44,171 INFO L226 Difference]: Without dead ends: 13124 [2025-03-03 10:41:44,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:44,181 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 899 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:44,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 611 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 10:41:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13124 states. [2025-03-03 10:41:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13124 to 13114. [2025-03-03 10:41:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.2755281018836269) internal successors, (16726), 13113 states have internal predecessors, (16726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 16726 transitions. [2025-03-03 10:41:44,373 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 16726 transitions. Word has length 123 [2025-03-03 10:41:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:44,373 INFO L471 AbstractCegarLoop]: Abstraction has 13114 states and 16726 transitions. [2025-03-03 10:41:44,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 16726 transitions. [2025-03-03 10:41:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-03 10:41:44,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:44,376 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:44,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 10:41:44,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:44,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1707592259, now seen corresponding path program 1 times [2025-03-03 10:41:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:44,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102121739] [2025-03-03 10:41:44,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:44,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-03 10:41:44,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-03 10:41:44,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:44,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-03 10:41:44,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:44,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102121739] [2025-03-03 10:41:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102121739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772341207] [2025-03-03 10:41:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:44,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:44,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:44,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:44,621 INFO L87 Difference]: Start difference. First operand 13114 states and 16726 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:47,263 INFO L93 Difference]: Finished difference Result 36461 states and 47023 transitions. [2025-03-03 10:41:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:47,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2025-03-03 10:41:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:47,304 INFO L225 Difference]: With dead ends: 36461 [2025-03-03 10:41:47,304 INFO L226 Difference]: Without dead ends: 24136 [2025-03-03 10:41:47,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:47,324 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 849 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:47,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1033 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 10:41:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24136 states. [2025-03-03 10:41:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24136 to 24130. [2025-03-03 10:41:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24130 states, 24129 states have (on average 1.2020804840648183) internal successors, (29005), 24129 states have internal predecessors, (29005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24130 states to 24130 states and 29005 transitions. [2025-03-03 10:41:47,573 INFO L78 Accepts]: Start accepts. Automaton has 24130 states and 29005 transitions. Word has length 206 [2025-03-03 10:41:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:47,573 INFO L471 AbstractCegarLoop]: Abstraction has 24130 states and 29005 transitions. [2025-03-03 10:41:47,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 24130 states and 29005 transitions. [2025-03-03 10:41:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-03 10:41:47,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:47,577 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:47,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 10:41:47,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:47,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1252872107, now seen corresponding path program 1 times [2025-03-03 10:41:47,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:47,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013854064] [2025-03-03 10:41:47,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:47,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:47,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-03 10:41:47,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-03 10:41:47,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:47,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 10:41:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013854064] [2025-03-03 10:41:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013854064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:47,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:47,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251731835] [2025-03-03 10:41:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:47,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:47,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:47,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:47,816 INFO L87 Difference]: Start difference. First operand 24130 states and 29005 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:49,958 INFO L93 Difference]: Finished difference Result 43520 states and 52823 transitions. [2025-03-03 10:41:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:49,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2025-03-03 10:41:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:49,995 INFO L225 Difference]: With dead ends: 43520 [2025-03-03 10:41:49,995 INFO L226 Difference]: Without dead ends: 24131 [2025-03-03 10:41:50,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:50,012 INFO L435 NwaCegarLoop]: 1078 mSDtfsCounter, 676 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:50,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1213 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-03 10:41:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24131 states. [2025-03-03 10:41:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24131 to 24130. [2025-03-03 10:41:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24130 states, 24129 states have (on average 1.2018732645364498) internal successors, (29000), 24129 states have internal predecessors, (29000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24130 states to 24130 states and 29000 transitions. [2025-03-03 10:41:50,517 INFO L78 Accepts]: Start accepts. Automaton has 24130 states and 29000 transitions. Word has length 210 [2025-03-03 10:41:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:50,518 INFO L471 AbstractCegarLoop]: Abstraction has 24130 states and 29000 transitions. [2025-03-03 10:41:50,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 24130 states and 29000 transitions. [2025-03-03 10:41:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2025-03-03 10:41:50,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:50,524 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:50,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 10:41:50,524 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:50,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1419449443, now seen corresponding path program 1 times [2025-03-03 10:41:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:50,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449721941] [2025-03-03 10:41:50,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:50,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 223 statements into 1 equivalence classes. [2025-03-03 10:41:50,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 223 of 223 statements. [2025-03-03 10:41:50,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:50,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:41:50,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449721941] [2025-03-03 10:41:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449721941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:50,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:41:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482533860] [2025-03-03 10:41:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:50,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:50,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:50,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:50,680 INFO L87 Difference]: Start difference. First operand 24130 states and 29000 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:53,070 INFO L93 Difference]: Finished difference Result 47314 states and 56987 transitions. [2025-03-03 10:41:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:53,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2025-03-03 10:41:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:53,095 INFO L225 Difference]: With dead ends: 47314 [2025-03-03 10:41:53,096 INFO L226 Difference]: Without dead ends: 23973 [2025-03-03 10:41:53,112 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 [2025-03-03 10:41:53,113 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 1037 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:53,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1657 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-03 10:41:53,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23973 states. [2025-03-03 10:41:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23973 to 23968. [2025-03-03 10:41:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23968 states, 23967 states have (on average 1.1344348479158843) internal successors, (27189), 23967 states have internal predecessors, (27189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23968 states to 23968 states and 27189 transitions. [2025-03-03 10:41:53,378 INFO L78 Accepts]: Start accepts. Automaton has 23968 states and 27189 transitions. Word has length 223 [2025-03-03 10:41:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:53,378 INFO L471 AbstractCegarLoop]: Abstraction has 23968 states and 27189 transitions. [2025-03-03 10:41:53,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 23968 states and 27189 transitions. [2025-03-03 10:41:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-03-03 10:41:53,382 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:53,382 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:53,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 10:41:53,383 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:53,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1368860107, now seen corresponding path program 1 times [2025-03-03 10:41:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407650595] [2025-03-03 10:41:53,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:53,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 242 statements into 1 equivalence classes. [2025-03-03 10:41:53,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 242 of 242 statements. [2025-03-03 10:41:53,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:53,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-03 10:41:53,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407650595] [2025-03-03 10:41:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407650595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:53,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:41:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353625106] [2025-03-03 10:41:53,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:53,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:41:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:53,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:41:53,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:53,635 INFO L87 Difference]: Start difference. First operand 23968 states and 27189 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:41:55,888 INFO L93 Difference]: Finished difference Result 47147 states and 53579 transitions. [2025-03-03 10:41:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:41:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2025-03-03 10:41:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:41:55,909 INFO L225 Difference]: With dead ends: 47147 [2025-03-03 10:41:55,909 INFO L226 Difference]: Without dead ends: 23968 [2025-03-03 10:41:55,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:41:55,917 INFO L435 NwaCegarLoop]: 1056 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:41:55,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1185 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:41:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23968 states. [2025-03-03 10:41:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23968 to 23968. [2025-03-03 10:41:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23968 states, 23967 states have (on average 1.1342262277297952) internal successors, (27184), 23967 states have internal predecessors, (27184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23968 states to 23968 states and 27184 transitions. [2025-03-03 10:41:56,093 INFO L78 Accepts]: Start accepts. Automaton has 23968 states and 27184 transitions. Word has length 242 [2025-03-03 10:41:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:41:56,093 INFO L471 AbstractCegarLoop]: Abstraction has 23968 states and 27184 transitions. [2025-03-03 10:41:56,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:41:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 23968 states and 27184 transitions. [2025-03-03 10:41:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-03 10:41:56,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:41:56,096 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:41:56,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 10:41:56,096 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:41:56,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:41:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2119215763, now seen corresponding path program 1 times [2025-03-03 10:41:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:41:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97810596] [2025-03-03 10:41:56,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:41:56,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:41:56,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-03 10:41:56,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-03 10:41:56,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:41:56,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:41:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 10:41:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:41:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97810596] [2025-03-03 10:41:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97810596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:41:56,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:41:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:41:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121843660] [2025-03-03 10:41:56,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:41:56,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 10:41:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:41:56,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 10:41:56,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:41:56,321 INFO L87 Difference]: Start difference. First operand 23968 states and 27184 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:01,684 INFO L93 Difference]: Finished difference Result 85143 states and 97159 transitions. [2025-03-03 10:42:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 10:42:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2025-03-03 10:42:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:01,751 INFO L225 Difference]: With dead ends: 85143 [2025-03-03 10:42:01,751 INFO L226 Difference]: Without dead ends: 61964 [2025-03-03 10:42:01,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:42:01,773 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 1740 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 6753 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 7811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 6753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:01,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 867 Invalid, 7811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 6753 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2025-03-03 10:42:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61964 states. [2025-03-03 10:42:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61964 to 60259. [2025-03-03 10:42:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60259 states, 60258 states have (on average 1.1227056988283712) internal successors, (67652), 60258 states have internal predecessors, (67652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60259 states to 60259 states and 67652 transitions. [2025-03-03 10:42:02,286 INFO L78 Accepts]: Start accepts. Automaton has 60259 states and 67652 transitions. Word has length 249 [2025-03-03 10:42:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:02,286 INFO L471 AbstractCegarLoop]: Abstraction has 60259 states and 67652 transitions. [2025-03-03 10:42:02,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 60259 states and 67652 transitions. [2025-03-03 10:42:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-03 10:42:02,289 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:02,289 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:02,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 10:42:02,290 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:02,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash 559167721, now seen corresponding path program 1 times [2025-03-03 10:42:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:02,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233637367] [2025-03-03 10:42:02,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:02,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:02,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-03 10:42:02,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-03 10:42:02,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:02,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 10:42:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233637367] [2025-03-03 10:42:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233637367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:02,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:42:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506798845] [2025-03-03 10:42:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:02,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:02,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:02,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:02,491 INFO L87 Difference]: Start difference. First operand 60259 states and 67652 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:05,571 INFO L93 Difference]: Finished difference Result 146519 states and 166338 transitions. [2025-03-03 10:42:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2025-03-03 10:42:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:05,657 INFO L225 Difference]: With dead ends: 146519 [2025-03-03 10:42:05,657 INFO L226 Difference]: Without dead ends: 83896 [2025-03-03 10:42:05,695 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 [2025-03-03 10:42:05,695 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 746 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:05,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1967 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-03 10:42:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83896 states. [2025-03-03 10:42:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83896 to 80709. [2025-03-03 10:42:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80709 states, 80708 states have (on average 1.1046984189919216) internal successors, (89158), 80708 states have internal predecessors, (89158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80709 states to 80709 states and 89158 transitions. [2025-03-03 10:42:06,496 INFO L78 Accepts]: Start accepts. Automaton has 80709 states and 89158 transitions. Word has length 306 [2025-03-03 10:42:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:06,497 INFO L471 AbstractCegarLoop]: Abstraction has 80709 states and 89158 transitions. [2025-03-03 10:42:06,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 80709 states and 89158 transitions. [2025-03-03 10:42:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2025-03-03 10:42:06,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:06,499 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:06,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 10:42:06,500 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:06,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1254085016, now seen corresponding path program 1 times [2025-03-03 10:42:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:06,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570268642] [2025-03-03 10:42:06,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:06,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:06,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 335 statements into 1 equivalence classes. [2025-03-03 10:42:06,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 335 of 335 statements. [2025-03-03 10:42:06,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:06,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 182 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 10:42:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:07,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570268642] [2025-03-03 10:42:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570268642] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 10:42:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239063997] [2025-03-03 10:42:07,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:07,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 10:42:07,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 10:42:07,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 10:42:07,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 10:42:07,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 335 statements into 1 equivalence classes. [2025-03-03 10:42:07,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 335 of 335 statements. [2025-03-03 10:42:07,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:07,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:07,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 10:42:07,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 10:42:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 10:42:07,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 10:42:07,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239063997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:07,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 10:42:07,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-03 10:42:07,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528420036] [2025-03-03 10:42:07,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:07,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:07,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:07,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-03 10:42:07,771 INFO L87 Difference]: Start difference. First operand 80709 states and 89158 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:10,510 INFO L93 Difference]: Finished difference Result 160627 states and 177521 transitions. [2025-03-03 10:42:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2025-03-03 10:42:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:10,595 INFO L225 Difference]: With dead ends: 160627 [2025-03-03 10:42:10,595 INFO L226 Difference]: Without dead ends: 80707 [2025-03-03 10:42:10,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-03 10:42:10,641 INFO L435 NwaCegarLoop]: 1344 mSDtfsCounter, 1113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:10,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1423 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 10:42:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80707 states. [2025-03-03 10:42:11,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80707 to 80706. [2025-03-03 10:42:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80706 states, 80705 states have (on average 1.0795861470788675) internal successors, (87128), 80705 states have internal predecessors, (87128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80706 states to 80706 states and 87128 transitions. [2025-03-03 10:42:11,445 INFO L78 Accepts]: Start accepts. Automaton has 80706 states and 87128 transitions. Word has length 335 [2025-03-03 10:42:11,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:11,445 INFO L471 AbstractCegarLoop]: Abstraction has 80706 states and 87128 transitions. [2025-03-03 10:42:11,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:11,445 INFO L276 IsEmpty]: Start isEmpty. Operand 80706 states and 87128 transitions. [2025-03-03 10:42:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-03-03 10:42:11,448 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:11,449 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:11,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 10:42:11,649 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,SelfDestructingSolverStorable10 [2025-03-03 10:42:11,650 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:11,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash -983994665, now seen corresponding path program 1 times [2025-03-03 10:42:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038576214] [2025-03-03 10:42:11,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:11,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-03-03 10:42:11,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-03-03 10:42:11,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:11,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2025-03-03 10:42:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038576214] [2025-03-03 10:42:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038576214] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:11,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:11,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:42:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668741659] [2025-03-03 10:42:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:11,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:11,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:11,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:11,786 INFO L87 Difference]: Start difference. First operand 80706 states and 87128 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:14,725 INFO L93 Difference]: Finished difference Result 187388 states and 204112 transitions. [2025-03-03 10:42:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:14,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2025-03-03 10:42:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:14,851 INFO L225 Difference]: With dead ends: 187388 [2025-03-03 10:42:14,852 INFO L226 Difference]: Without dead ends: 107471 [2025-03-03 10:42:14,898 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 [2025-03-03 10:42:14,898 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 874 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:14,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 905 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 10:42:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107471 states. [2025-03-03 10:42:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107471 to 105091. [2025-03-03 10:42:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105091 states, 105090 states have (on average 1.0853268626891237) internal successors, (114057), 105090 states have internal predecessors, (114057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105091 states to 105091 states and 114057 transitions. [2025-03-03 10:42:16,116 INFO L78 Accepts]: Start accepts. Automaton has 105091 states and 114057 transitions. Word has length 365 [2025-03-03 10:42:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:16,117 INFO L471 AbstractCegarLoop]: Abstraction has 105091 states and 114057 transitions. [2025-03-03 10:42:16,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 105091 states and 114057 transitions. [2025-03-03 10:42:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-03-03 10:42:16,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:16,128 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:16,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 10:42:16,129 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:16,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2033075493, now seen corresponding path program 1 times [2025-03-03 10:42:16,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:16,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5335713] [2025-03-03 10:42:16,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:16,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 403 statements into 1 equivalence classes. [2025-03-03 10:42:16,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 403 of 403 statements. [2025-03-03 10:42:16,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:16,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-03 10:42:16,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:16,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5335713] [2025-03-03 10:42:16,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5335713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:16,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:16,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:42:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487691327] [2025-03-03 10:42:16,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:16,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:16,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:16,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:16,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:16,357 INFO L87 Difference]: Start difference. First operand 105091 states and 114057 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:19,392 INFO L93 Difference]: Finished difference Result 236166 states and 257963 transitions. [2025-03-03 10:42:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:19,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2025-03-03 10:42:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:19,568 INFO L225 Difference]: With dead ends: 236166 [2025-03-03 10:42:19,568 INFO L226 Difference]: Without dead ends: 131077 [2025-03-03 10:42:19,628 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 [2025-03-03 10:42:19,630 INFO L435 NwaCegarLoop]: 1740 mSDtfsCounter, 787 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:19,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1882 Invalid, 3232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 10:42:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131077 states. [2025-03-03 10:42:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131077 to 130274. [2025-03-03 10:42:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130274 states, 130273 states have (on average 1.074650925364427) internal successors, (139998), 130273 states have internal predecessors, (139998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130274 states to 130274 states and 139998 transitions. [2025-03-03 10:42:21,029 INFO L78 Accepts]: Start accepts. Automaton has 130274 states and 139998 transitions. Word has length 403 [2025-03-03 10:42:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:21,030 INFO L471 AbstractCegarLoop]: Abstraction has 130274 states and 139998 transitions. [2025-03-03 10:42:21,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 130274 states and 139998 transitions. [2025-03-03 10:42:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-03-03 10:42:21,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:21,035 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:21,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 10:42:21,035 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:21,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1747722731, now seen corresponding path program 1 times [2025-03-03 10:42:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527359640] [2025-03-03 10:42:21,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:21,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:21,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-03-03 10:42:21,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-03-03 10:42:21,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:21,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 251 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 10:42:22,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527359640] [2025-03-03 10:42:22,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527359640] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 10:42:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267728032] [2025-03-03 10:42:22,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:22,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 10:42:22,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 10:42:22,185 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) [2025-03-03 10:42:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 10:42:22,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-03-03 10:42:22,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-03-03 10:42:22,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:22,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:22,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 10:42:22,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 10:42:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-03 10:42:22,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 10:42:22,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267728032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:22,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 10:42:22,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-03 10:42:22,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423724593] [2025-03-03 10:42:22,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:22,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:22,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:22,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-03 10:42:22,531 INFO L87 Difference]: Start difference. First operand 130274 states and 139998 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:25,232 INFO L93 Difference]: Finished difference Result 253432 states and 273375 transitions. [2025-03-03 10:42:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:25,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2025-03-03 10:42:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:25,375 INFO L225 Difference]: With dead ends: 253432 [2025-03-03 10:42:25,375 INFO L226 Difference]: Without dead ends: 139693 [2025-03-03 10:42:25,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-03 10:42:25,427 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 1128 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:25,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 367 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [793 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:42:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139693 states. [2025-03-03 10:42:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139693 to 139693. [2025-03-03 10:42:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139693 states, 139692 states have (on average 1.070233084213842) internal successors, (149503), 139692 states have internal predecessors, (149503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139693 states to 139693 states and 149503 transitions. [2025-03-03 10:42:26,794 INFO L78 Accepts]: Start accepts. Automaton has 139693 states and 149503 transitions. Word has length 439 [2025-03-03 10:42:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:26,795 INFO L471 AbstractCegarLoop]: Abstraction has 139693 states and 149503 transitions. [2025-03-03 10:42:26,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 139693 states and 149503 transitions. [2025-03-03 10:42:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2025-03-03 10:42:26,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:26,802 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:26,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 10:42:27,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-03 10:42:27,005 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:27,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1722272420, now seen corresponding path program 1 times [2025-03-03 10:42:27,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:27,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248065755] [2025-03-03 10:42:27,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:27,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:27,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 474 statements into 1 equivalence classes. [2025-03-03 10:42:27,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 474 of 474 statements. [2025-03-03 10:42:27,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:27,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 10:42:27,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:27,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248065755] [2025-03-03 10:42:27,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248065755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:27,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:42:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433246790] [2025-03-03 10:42:27,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:27,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 10:42:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:27,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 10:42:27,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:42:27,521 INFO L87 Difference]: Start difference. First operand 139693 states and 149503 transitions. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:30,965 INFO L93 Difference]: Finished difference Result 272296 states and 291876 transitions. [2025-03-03 10:42:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 10:42:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2025-03-03 10:42:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:31,119 INFO L225 Difference]: With dead ends: 272296 [2025-03-03 10:42:31,120 INFO L226 Difference]: Without dead ends: 147562 [2025-03-03 10:42:31,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:42:31,194 INFO L435 NwaCegarLoop]: 767 mSDtfsCounter, 1354 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 4545 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:31,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1047 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 4545 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-03 10:42:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147562 states. [2025-03-03 10:42:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147562 to 141265. [2025-03-03 10:42:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141265 states, 141264 states have (on average 1.0648289727035904) internal successors, (150422), 141264 states have internal predecessors, (150422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141265 states to 141265 states and 150422 transitions. [2025-03-03 10:42:32,692 INFO L78 Accepts]: Start accepts. Automaton has 141265 states and 150422 transitions. Word has length 474 [2025-03-03 10:42:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:32,693 INFO L471 AbstractCegarLoop]: Abstraction has 141265 states and 150422 transitions. [2025-03-03 10:42:32,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 141265 states and 150422 transitions. [2025-03-03 10:42:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2025-03-03 10:42:32,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:32,699 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:32,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 10:42:32,699 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:32,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1883344010, now seen corresponding path program 1 times [2025-03-03 10:42:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:32,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236610232] [2025-03-03 10:42:32,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:32,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:32,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 494 statements into 1 equivalence classes. [2025-03-03 10:42:32,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 494 of 494 statements. [2025-03-03 10:42:32,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:32,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2025-03-03 10:42:32,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236610232] [2025-03-03 10:42:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236610232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:32,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:32,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:42:32,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169377858] [2025-03-03 10:42:32,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:32,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:32,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:32,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:32,861 INFO L87 Difference]: Start difference. First operand 141265 states and 150422 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:35,022 INFO L93 Difference]: Finished difference Result 264406 states and 281950 transitions. [2025-03-03 10:42:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2025-03-03 10:42:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:35,152 INFO L225 Difference]: With dead ends: 264406 [2025-03-03 10:42:35,152 INFO L226 Difference]: Without dead ends: 139676 [2025-03-03 10:42:35,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:35,187 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 1555 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:35,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 278 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-03 10:42:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139676 states. [2025-03-03 10:42:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139676 to 139675. [2025-03-03 10:42:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139675 states, 139674 states have (on average 1.063841516674542) internal successors, (148591), 139674 states have internal predecessors, (148591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139675 states to 139675 states and 148591 transitions. [2025-03-03 10:42:36,813 INFO L78 Accepts]: Start accepts. Automaton has 139675 states and 148591 transitions. Word has length 494 [2025-03-03 10:42:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:36,814 INFO L471 AbstractCegarLoop]: Abstraction has 139675 states and 148591 transitions. [2025-03-03 10:42:36,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 139675 states and 148591 transitions. [2025-03-03 10:42:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2025-03-03 10:42:36,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:36,823 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:36,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 10:42:36,823 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:36,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash 571990061, now seen corresponding path program 1 times [2025-03-03 10:42:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:36,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078770445] [2025-03-03 10:42:36,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:36,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:36,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 534 statements into 1 equivalence classes. [2025-03-03 10:42:36,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 534 of 534 statements. [2025-03-03 10:42:36,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:36,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2025-03-03 10:42:37,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:37,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078770445] [2025-03-03 10:42:37,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078770445] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:37,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:42:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118801104] [2025-03-03 10:42:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:37,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:37,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:37,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:37,226 INFO L87 Difference]: Start difference. First operand 139675 states and 148591 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:40,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:40,198 INFO L93 Difference]: Finished difference Result 262826 states and 280116 transitions. [2025-03-03 10:42:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:40,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 534 [2025-03-03 10:42:40,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:40,342 INFO L225 Difference]: With dead ends: 262826 [2025-03-03 10:42:40,342 INFO L226 Difference]: Without dead ends: 139686 [2025-03-03 10:42:40,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:40,394 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 574 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:40,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1067 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 10:42:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139686 states. [2025-03-03 10:42:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139686 to 138888. [2025-03-03 10:42:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138888 states, 138887 states have (on average 1.0636704659183365) internal successors, (147730), 138887 states have internal predecessors, (147730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138888 states to 138888 states and 147730 transitions. [2025-03-03 10:42:41,861 INFO L78 Accepts]: Start accepts. Automaton has 138888 states and 147730 transitions. Word has length 534 [2025-03-03 10:42:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:42:41,862 INFO L471 AbstractCegarLoop]: Abstraction has 138888 states and 147730 transitions. [2025-03-03 10:42:41,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 138888 states and 147730 transitions. [2025-03-03 10:42:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2025-03-03 10:42:41,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:42:41,875 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:42:41,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 10:42:41,875 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:42:41,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:42:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash 156196427, now seen corresponding path program 1 times [2025-03-03 10:42:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:42:41,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877855372] [2025-03-03 10:42:41,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:42:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:42:41,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 543 statements into 1 equivalence classes. [2025-03-03 10:42:41,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 543 of 543 statements. [2025-03-03 10:42:41,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:42:41,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:42:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-03-03 10:42:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:42:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877855372] [2025-03-03 10:42:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877855372] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:42:42,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:42:42,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:42:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359756096] [2025-03-03 10:42:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:42:42,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:42:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:42:42,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:42:42,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:42:42,131 INFO L87 Difference]: Start difference. First operand 138888 states and 147730 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 10:42:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:42:45,091 INFO L93 Difference]: Finished difference Result 276980 states and 294580 transitions. [2025-03-03 10:42:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:42:45,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2025-03-03 10:42:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:42:45,227 INFO L225 Difference]: With dead ends: 276980 [2025-03-03 10:42:45,227 INFO L226 Difference]: Without dead ends: 138881 [2025-03-03 10:42:45,256 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 [2025-03-03 10:42:45,256 INFO L435 NwaCegarLoop]: 1299 mSDtfsCounter, 914 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-03 10:42:45,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1371 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]