./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-back-serstep.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash b9d90ab5fa842ed92f4d168fecaaa4078ac591e665f0729664a45aeab035527b --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 16:41:52,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 16:41:52,540 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-03 16:41:52,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 16:41:52,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 16:41:52,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 16:41:52,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 16:41:52,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 16:41:52,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 16:41:52,566 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 16:41:52,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 16:41:52,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 16:41:52,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 16:41:52,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 16:41:52,567 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 16:41:52,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 16:41:52,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:41:52,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 16:41:52,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 16:41:52,569 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 16:41:52,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 16:41:52,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 16:41:52,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 16:41:52,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 16:41:52,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 16:41:52,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 16:41:52,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 16:41:52,570 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d90ab5fa842ed92f4d168fecaaa4078ac591e665f0729664a45aeab035527b [2025-03-03 16:41:52,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 16:41:52,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 16:41:52,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 16:41:52,855 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 16:41:52,855 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 16:41:52,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-back-serstep.c [2025-03-03 16:41:54,062 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0fd81d8d/cfa4251fa8254119a5770dd39c3c2ad6/FLAG06d063ff3 [2025-03-03 16:41:54,393 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 16:41:54,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-back-serstep.c [2025-03-03 16:41:54,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0fd81d8d/cfa4251fa8254119a5770dd39c3c2ad6/FLAG06d063ff3 [2025-03-03 16:41:54,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0fd81d8d/cfa4251fa8254119a5770dd39c3c2ad6 [2025-03-03 16:41:54,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 16:41:54,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 16:41:54,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 16:41:54,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 16:41:54,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 16:41:54,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:54,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe5e56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54, skipping insertion in model container [2025-03-03 16:41:54,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:54,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 16:41:54,623 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/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-back-serstep.c[1174,1187] [2025-03-03 16:41:54,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:41:54,843 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 16:41:54,852 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/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-back-serstep.c[1174,1187] [2025-03-03 16:41:54,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:41:54,967 INFO L204 MainTranslator]: Completed translation [2025-03-03 16:41:54,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54 WrapperNode [2025-03-03 16:41:54,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 16:41:54,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 16:41:54,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 16:41:54,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 16:41:54,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,405 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4340 [2025-03-03 16:41:55,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 16:41:55,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 16:41:55,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 16:41:55,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 16:41:55,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,671 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 16:41:55,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,827 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 16:41:55,954 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 16:41:55,954 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 16:41:55,954 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 16:41:55,955 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (1/1) ... [2025-03-03 16:41:55,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:41:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:41:55,984 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 16:41:55,989 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 16:41:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 16:41:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 16:41:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 16:41:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 16:41:56,237 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 16:41:56,238 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 16:41:59,960 INFO L? ?]: Removed 2368 outVars from TransFormulas that were not future-live. [2025-03-03 16:41:59,960 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 16:42:00,126 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 16:42:00,127 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 16:42:00,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:42:00 BoogieIcfgContainer [2025-03-03 16:42:00,127 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 16:42:00,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 16:42:00,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 16:42:00,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 16:42:00,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 04:41:54" (1/3) ... [2025-03-03 16:42:00,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:42:00, skipping insertion in model container [2025-03-03 16:42:00,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:41:54" (2/3) ... [2025-03-03 16:42:00,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:42:00, skipping insertion in model container [2025-03-03 16:42:00,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:42:00" (3/3) ... [2025-03-03 16:42:00,138 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.2.prop1-back-serstep.c [2025-03-03 16:42:00,152 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 16:42:00,154 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.bakery.2.prop1-back-serstep.c that has 1 procedures, 1470 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 16:42:00,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 16:42:00,239 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;@773b0b7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 16:42:00,239 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 16:42:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 1470 states, 1468 states have (on average 1.4993188010899183) internal successors, (2201), 1469 states have internal predecessors, (2201), 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 16:42:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-03 16:42:00,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:00,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:00,258 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:00,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash 865513809, now seen corresponding path program 1 times [2025-03-03 16:42:00,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:00,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831823816] [2025-03-03 16:42:00,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:00,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 16:42:00,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 16:42:00,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:00,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:01,253 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 16:42:01,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831823816] [2025-03-03 16:42:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831823816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:01,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:01,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560705793] [2025-03-03 16:42:01,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:01,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:01,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:01,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:01,284 INFO L87 Difference]: Start difference. First operand has 1470 states, 1468 states have (on average 1.4993188010899183) internal successors, (2201), 1469 states have internal predecessors, (2201), 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 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 16:42:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:02,178 INFO L93 Difference]: Finished difference Result 2857 states and 4281 transitions. [2025-03-03 16:42:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:02,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2025-03-03 16:42:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:02,196 INFO L225 Difference]: With dead ends: 2857 [2025-03-03 16:42:02,197 INFO L226 Difference]: Without dead ends: 1469 [2025-03-03 16:42:02,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:02,207 INFO L435 NwaCegarLoop]: 1830 mSDtfsCounter, 0 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:02,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5485 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 16:42:02,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2025-03-03 16:42:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2025-03-03 16:42:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 1.4979564032697548) internal successors, (2199), 1468 states have internal predecessors, (2199), 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 16:42:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2199 transitions. [2025-03-03 16:42:02,281 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2199 transitions. Word has length 159 [2025-03-03 16:42:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:02,283 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 2199 transitions. [2025-03-03 16:42:02,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 16:42:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2199 transitions. [2025-03-03 16:42:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-03 16:42:02,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:02,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:02,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 16:42:02,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:02,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1065805464, now seen corresponding path program 1 times [2025-03-03 16:42:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:02,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981469518] [2025-03-03 16:42:02,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:02,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 16:42:02,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 16:42:02,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:02,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:02,592 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 16:42:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981469518] [2025-03-03 16:42:02,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981469518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:02,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:02,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:02,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890220915] [2025-03-03 16:42:02,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:02,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:02,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:02,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:02,594 INFO L87 Difference]: Start difference. First operand 1469 states and 2199 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 16:42:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:03,202 INFO L93 Difference]: Finished difference Result 2858 states and 4279 transitions. [2025-03-03 16:42:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2025-03-03 16:42:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:03,209 INFO L225 Difference]: With dead ends: 2858 [2025-03-03 16:42:03,209 INFO L226 Difference]: Without dead ends: 1471 [2025-03-03 16:42:03,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:03,212 INFO L435 NwaCegarLoop]: 1830 mSDtfsCounter, 0 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:03,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5482 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 16:42:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2025-03-03 16:42:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1471. [2025-03-03 16:42:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 1.497278911564626) internal successors, (2201), 1470 states have internal predecessors, (2201), 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 16:42:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2201 transitions. [2025-03-03 16:42:03,236 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2201 transitions. Word has length 160 [2025-03-03 16:42:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:03,237 INFO L471 AbstractCegarLoop]: Abstraction has 1471 states and 2201 transitions. [2025-03-03 16:42:03,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 16:42:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2201 transitions. [2025-03-03 16:42:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-03 16:42:03,241 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:03,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:03,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 16:42:03,242 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:03,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 611742252, now seen corresponding path program 1 times [2025-03-03 16:42:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164843385] [2025-03-03 16:42:03,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:03,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-03 16:42:03,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-03 16:42:03,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:03,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:03,584 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 16:42:03,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:03,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164843385] [2025-03-03 16:42:03,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164843385] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:03,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:03,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 16:42:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663045825] [2025-03-03 16:42:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:03,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 16:42:03,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:03,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 16:42:03,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:03,587 INFO L87 Difference]: Start difference. First operand 1471 states and 2201 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 16:42:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:04,502 INFO L93 Difference]: Finished difference Result 4227 states and 6328 transitions. [2025-03-03 16:42:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 16:42:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 161 [2025-03-03 16:42:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:04,512 INFO L225 Difference]: With dead ends: 4227 [2025-03-03 16:42:04,512 INFO L226 Difference]: Without dead ends: 2838 [2025-03-03 16:42:04,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 16:42:04,514 INFO L435 NwaCegarLoop]: 1828 mSDtfsCounter, 2016 mSDsluCounter, 5378 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 7206 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:04,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 7206 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 16:42:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2025-03-03 16:42:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 1693. [2025-03-03 16:42:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.4970449172576832) internal successors, (2533), 1692 states have internal predecessors, (2533), 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 16:42:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2533 transitions. [2025-03-03 16:42:04,548 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2533 transitions. Word has length 161 [2025-03-03 16:42:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:04,548 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2533 transitions. [2025-03-03 16:42:04,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 16:42:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2533 transitions. [2025-03-03 16:42:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2025-03-03 16:42:04,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:04,562 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:04,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 16:42:04,562 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:04,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:04,563 INFO L85 PathProgramCache]: Analyzing trace with hash 973730346, now seen corresponding path program 1 times [2025-03-03 16:42:04,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:04,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068948678] [2025-03-03 16:42:04,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:04,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:04,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 854 statements into 1 equivalence classes. [2025-03-03 16:42:05,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 854 of 854 statements. [2025-03-03 16:42:05,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:05,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-03 16:42:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068948678] [2025-03-03 16:42:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068948678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:06,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:06,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 16:42:06,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616331883] [2025-03-03 16:42:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:06,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 16:42:06,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:06,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 16:42:06,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:06,817 INFO L87 Difference]: Start difference. First operand 1693 states and 2533 transitions. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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 16:42:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:07,356 INFO L93 Difference]: Finished difference Result 3086 states and 4617 transitions. [2025-03-03 16:42:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:07,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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 854 [2025-03-03 16:42:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:07,364 INFO L225 Difference]: With dead ends: 3086 [2025-03-03 16:42:07,364 INFO L226 Difference]: Without dead ends: 1697 [2025-03-03 16:42:07,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:07,366 INFO L435 NwaCegarLoop]: 1830 mSDtfsCounter, 0 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:07,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5482 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 16:42:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2025-03-03 16:42:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1693. [2025-03-03 16:42:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.4970449172576832) internal successors, (2533), 1692 states have internal predecessors, (2533), 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 16:42:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2533 transitions. [2025-03-03 16:42:07,392 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2533 transitions. Word has length 854 [2025-03-03 16:42:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:07,393 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2533 transitions. [2025-03-03 16:42:07,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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 16:42:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2533 transitions. [2025-03-03 16:42:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2025-03-03 16:42:07,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:07,413 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:07,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 16:42:07,413 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:07,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2009234175, now seen corresponding path program 1 times [2025-03-03 16:42:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:07,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005582955] [2025-03-03 16:42:07,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:07,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:07,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 855 statements into 1 equivalence classes. [2025-03-03 16:42:09,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 855 of 855 statements. [2025-03-03 16:42:09,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:09,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005582955] [2025-03-03 16:42:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005582955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076635352] [2025-03-03 16:42:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:10,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:10,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:10,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:10,653 INFO L87 Difference]: Start difference. First operand 1693 states and 2533 transitions. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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 16:42:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:12,017 INFO L93 Difference]: Finished difference Result 4299 states and 6433 transitions. [2025-03-03 16:42:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 16:42:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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 855 [2025-03-03 16:42:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:12,028 INFO L225 Difference]: With dead ends: 4299 [2025-03-03 16:42:12,028 INFO L226 Difference]: Without dead ends: 1693 [2025-03-03 16:42:12,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:12,031 INFO L435 NwaCegarLoop]: 3208 mSDtfsCounter, 1614 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 7851 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:12,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 7851 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-03 16:42:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2025-03-03 16:42:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1693. [2025-03-03 16:42:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.49645390070922) internal successors, (2532), 1692 states have internal predecessors, (2532), 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 16:42:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2532 transitions. [2025-03-03 16:42:12,056 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2532 transitions. Word has length 855 [2025-03-03 16:42:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:12,057 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2532 transitions. [2025-03-03 16:42:12,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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 16:42:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2532 transitions. [2025-03-03 16:42:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2025-03-03 16:42:12,078 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:12,079 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:12,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 16:42:12,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:12,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash -700046039, now seen corresponding path program 1 times [2025-03-03 16:42:12,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:12,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627360960] [2025-03-03 16:42:12,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:12,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:12,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 856 statements into 1 equivalence classes. [2025-03-03 16:42:12,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 856 of 856 statements. [2025-03-03 16:42:12,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:12,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-03-03 16:42:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627360960] [2025-03-03 16:42:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627360960] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:13,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:13,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109245626] [2025-03-03 16:42:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:13,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:13,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:13,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:13,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:13,599 INFO L87 Difference]: Start difference. First operand 1693 states and 2532 transitions. Second operand has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 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 16:42:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:14,119 INFO L93 Difference]: Finished difference Result 3090 states and 4621 transitions. [2025-03-03 16:42:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:14,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 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 856 [2025-03-03 16:42:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:14,126 INFO L225 Difference]: With dead ends: 3090 [2025-03-03 16:42:14,126 INFO L226 Difference]: Without dead ends: 1697 [2025-03-03 16:42:14,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:14,128 INFO L435 NwaCegarLoop]: 1829 mSDtfsCounter, 0 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:14,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5479 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 16:42:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2025-03-03 16:42:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1695. [2025-03-03 16:42:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.4958677685950412) internal successors, (2534), 1694 states have internal predecessors, (2534), 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 16:42:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2534 transitions. [2025-03-03 16:42:14,148 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2534 transitions. Word has length 856 [2025-03-03 16:42:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:14,149 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2534 transitions. [2025-03-03 16:42:14,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 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 16:42:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2534 transitions. [2025-03-03 16:42:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2025-03-03 16:42:14,154 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:14,155 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:14,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 16:42:14,155 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:14,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash 473208731, now seen corresponding path program 1 times [2025-03-03 16:42:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:14,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226682276] [2025-03-03 16:42:14,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:14,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:14,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 857 statements into 1 equivalence classes. [2025-03-03 16:42:14,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 857 of 857 statements. [2025-03-03 16:42:14,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:14,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-03 16:42:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226682276] [2025-03-03 16:42:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226682276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:15,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030753963] [2025-03-03 16:42:15,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:15,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:15,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:15,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:15,356 INFO L87 Difference]: Start difference. First operand 1695 states and 2534 transitions. Second operand has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 16:42:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:15,860 INFO L93 Difference]: Finished difference Result 3098 states and 4631 transitions. [2025-03-03 16:42:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:15,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 857 [2025-03-03 16:42:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:15,865 INFO L225 Difference]: With dead ends: 3098 [2025-03-03 16:42:15,865 INFO L226 Difference]: Without dead ends: 1699 [2025-03-03 16:42:15,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:15,868 INFO L435 NwaCegarLoop]: 1829 mSDtfsCounter, 0 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:15,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5479 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 16:42:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2025-03-03 16:42:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2025-03-03 16:42:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 1.4952830188679245) internal successors, (2536), 1696 states have internal predecessors, (2536), 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 16:42:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2536 transitions. [2025-03-03 16:42:15,893 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2536 transitions. Word has length 857 [2025-03-03 16:42:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:15,894 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2536 transitions. [2025-03-03 16:42:15,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 16:42:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2536 transitions. [2025-03-03 16:42:15,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2025-03-03 16:42:15,904 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:15,905 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:15,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 16:42:15,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:15,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1653024206, now seen corresponding path program 1 times [2025-03-03 16:42:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14316969] [2025-03-03 16:42:15,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:16,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 858 statements into 1 equivalence classes. [2025-03-03 16:42:16,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 858 of 858 statements. [2025-03-03 16:42:16,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:16,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-03 16:42:17,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:17,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14316969] [2025-03-03 16:42:17,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14316969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:17,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:17,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 16:42:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539259664] [2025-03-03 16:42:17,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:17,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 16:42:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:17,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 16:42:17,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:17,222 INFO L87 Difference]: Start difference. First operand 1697 states and 2536 transitions. Second operand has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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 16:42:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:17,639 INFO L93 Difference]: Finished difference Result 3106 states and 4641 transitions. [2025-03-03 16:42:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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 858 [2025-03-03 16:42:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:17,644 INFO L225 Difference]: With dead ends: 3106 [2025-03-03 16:42:17,644 INFO L226 Difference]: Without dead ends: 1701 [2025-03-03 16:42:17,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:17,646 INFO L435 NwaCegarLoop]: 1829 mSDtfsCounter, 0 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:17,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5479 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:17,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2025-03-03 16:42:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2025-03-03 16:42:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.4946996466431095) internal successors, (2538), 1698 states have internal predecessors, (2538), 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 16:42:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2538 transitions. [2025-03-03 16:42:17,663 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2538 transitions. Word has length 858 [2025-03-03 16:42:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:17,664 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 2538 transitions. [2025-03-03 16:42:17,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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 16:42:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2538 transitions. [2025-03-03 16:42:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2025-03-03 16:42:17,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:17,669 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:17,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 16:42:17,670 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:17,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2079085942, now seen corresponding path program 1 times [2025-03-03 16:42:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872658800] [2025-03-03 16:42:17,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:17,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:17,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 859 statements into 1 equivalence classes. [2025-03-03 16:42:17,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 859 of 859 statements. [2025-03-03 16:42:17,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:17,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-03-03 16:42:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872658800] [2025-03-03 16:42:18,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872658800] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:18,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:18,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:18,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619637132] [2025-03-03 16:42:18,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:18,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:18,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:18,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:18,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:18,725 INFO L87 Difference]: Start difference. First operand 1699 states and 2538 transitions. Second operand has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 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 16:42:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:19,185 INFO L93 Difference]: Finished difference Result 3114 states and 4651 transitions. [2025-03-03 16:42:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:19,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 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 859 [2025-03-03 16:42:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:19,190 INFO L225 Difference]: With dead ends: 3114 [2025-03-03 16:42:19,190 INFO L226 Difference]: Without dead ends: 1703 [2025-03-03 16:42:19,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:19,192 INFO L435 NwaCegarLoop]: 1829 mSDtfsCounter, 0 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:19,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5479 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2025-03-03 16:42:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1701. [2025-03-03 16:42:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 1.4941176470588236) internal successors, (2540), 1700 states have internal predecessors, (2540), 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 16:42:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2540 transitions. [2025-03-03 16:42:19,210 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2540 transitions. Word has length 859 [2025-03-03 16:42:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:19,211 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 2540 transitions. [2025-03-03 16:42:19,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 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 16:42:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2540 transitions. [2025-03-03 16:42:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2025-03-03 16:42:19,217 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:19,218 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:19,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 16:42:19,218 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:19,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash 875015539, now seen corresponding path program 1 times [2025-03-03 16:42:19,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:19,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549327018] [2025-03-03 16:42:19,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:19,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 860 statements into 1 equivalence classes. [2025-03-03 16:42:19,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 860 of 860 statements. [2025-03-03 16:42:19,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:19,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549327018] [2025-03-03 16:42:21,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549327018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674232929] [2025-03-03 16:42:21,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:21,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:21,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:21,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:21,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:21,080 INFO L87 Difference]: Start difference. First operand 1701 states and 2540 transitions. Second operand has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 16:42:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:21,872 INFO L93 Difference]: Finished difference Result 3714 states and 5548 transitions. [2025-03-03 16:42:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 860 [2025-03-03 16:42:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:21,876 INFO L225 Difference]: With dead ends: 3714 [2025-03-03 16:42:21,876 INFO L226 Difference]: Without dead ends: 1701 [2025-03-03 16:42:21,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:21,878 INFO L435 NwaCegarLoop]: 1795 mSDtfsCounter, 550 mSDsluCounter, 3226 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:21,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 5021 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 16:42:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2025-03-03 16:42:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2025-03-03 16:42:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 1.4935294117647058) internal successors, (2539), 1700 states have internal predecessors, (2539), 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 16:42:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2539 transitions. [2025-03-03 16:42:21,898 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2539 transitions. Word has length 860 [2025-03-03 16:42:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:21,899 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 2539 transitions. [2025-03-03 16:42:21,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 16:42:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2539 transitions. [2025-03-03 16:42:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2025-03-03 16:42:21,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:21,909 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:21,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 16:42:21,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:21,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash -606010121, now seen corresponding path program 1 times [2025-03-03 16:42:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:21,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273332954] [2025-03-03 16:42:21,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:21,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:22,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 861 statements into 1 equivalence classes. [2025-03-03 16:42:22,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 861 of 861 statements. [2025-03-03 16:42:22,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:22,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-03 16:42:23,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:23,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273332954] [2025-03-03 16:42:23,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273332954] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:23,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:23,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 16:42:23,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736280185] [2025-03-03 16:42:23,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:23,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 16:42:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:23,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 16:42:23,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:23,114 INFO L87 Difference]: Start difference. First operand 1701 states and 2539 transitions. Second operand has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 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 16:42:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:23,666 INFO L93 Difference]: Finished difference Result 3122 states and 4659 transitions. [2025-03-03 16:42:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 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 861 [2025-03-03 16:42:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:23,671 INFO L225 Difference]: With dead ends: 3122 [2025-03-03 16:42:23,671 INFO L226 Difference]: Without dead ends: 1705 [2025-03-03 16:42:23,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:23,673 INFO L435 NwaCegarLoop]: 1828 mSDtfsCounter, 0 mSDsluCounter, 5471 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7299 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:23,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7299 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 16:42:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2025-03-03 16:42:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1703. [2025-03-03 16:42:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1702 states have (on average 1.4929494712103408) internal successors, (2541), 1702 states have internal predecessors, (2541), 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 16:42:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2541 transitions. [2025-03-03 16:42:23,690 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2541 transitions. Word has length 861 [2025-03-03 16:42:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:23,690 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2541 transitions. [2025-03-03 16:42:23,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 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 16:42:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2541 transitions. [2025-03-03 16:42:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2025-03-03 16:42:23,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:23,696 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:23,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 16:42:23,697 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:23,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1774707379, now seen corresponding path program 1 times [2025-03-03 16:42:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291056919] [2025-03-03 16:42:23,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:23,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 862 statements into 1 equivalence classes. [2025-03-03 16:42:23,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 862 of 862 statements. [2025-03-03 16:42:23,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:23,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-03 16:42:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291056919] [2025-03-03 16:42:24,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291056919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:24,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741682900] [2025-03-03 16:42:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:24,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:24,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:24,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:24,756 INFO L87 Difference]: Start difference. First operand 1703 states and 2541 transitions. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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 16:42:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:25,205 INFO L93 Difference]: Finished difference Result 3130 states and 4669 transitions. [2025-03-03 16:42:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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 862 [2025-03-03 16:42:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:25,209 INFO L225 Difference]: With dead ends: 3130 [2025-03-03 16:42:25,209 INFO L226 Difference]: Without dead ends: 1707 [2025-03-03 16:42:25,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:25,211 INFO L435 NwaCegarLoop]: 1828 mSDtfsCounter, 0 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:25,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5476 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2025-03-03 16:42:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1705. [2025-03-03 16:42:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.4923708920187793) internal successors, (2543), 1704 states have internal predecessors, (2543), 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 16:42:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2543 transitions. [2025-03-03 16:42:25,227 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2543 transitions. Word has length 862 [2025-03-03 16:42:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:25,227 INFO L471 AbstractCegarLoop]: Abstraction has 1705 states and 2543 transitions. [2025-03-03 16:42:25,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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 16:42:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2543 transitions. [2025-03-03 16:42:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2025-03-03 16:42:25,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:25,233 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:25,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 16:42:25,233 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:25,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 242045596, now seen corresponding path program 1 times [2025-03-03 16:42:25,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:25,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919190245] [2025-03-03 16:42:25,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:25,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 863 statements into 1 equivalence classes. [2025-03-03 16:42:25,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 863 of 863 statements. [2025-03-03 16:42:25,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:25,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919190245] [2025-03-03 16:42:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919190245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:27,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865535866] [2025-03-03 16:42:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:27,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:27,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:27,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:27,009 INFO L87 Difference]: Start difference. First operand 1705 states and 2543 transitions. Second operand has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 16:42:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:27,754 INFO L93 Difference]: Finished difference Result 3314 states and 4942 transitions. [2025-03-03 16:42:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:27,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 863 [2025-03-03 16:42:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:27,759 INFO L225 Difference]: With dead ends: 3314 [2025-03-03 16:42:27,759 INFO L226 Difference]: Without dead ends: 1705 [2025-03-03 16:42:27,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:27,760 INFO L435 NwaCegarLoop]: 1816 mSDtfsCounter, 186 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:27,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5063 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 16:42:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2025-03-03 16:42:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1705. [2025-03-03 16:42:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.4917840375586855) internal successors, (2542), 1704 states have internal predecessors, (2542), 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 16:42:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2542 transitions. [2025-03-03 16:42:27,778 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2542 transitions. Word has length 863 [2025-03-03 16:42:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:27,779 INFO L471 AbstractCegarLoop]: Abstraction has 1705 states and 2542 transitions. [2025-03-03 16:42:27,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 16:42:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2542 transitions. [2025-03-03 16:42:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2025-03-03 16:42:27,787 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:27,787 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:27,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 16:42:27,787 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:27,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -574769899, now seen corresponding path program 1 times [2025-03-03 16:42:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332421959] [2025-03-03 16:42:27,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:27,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 864 statements into 1 equivalence classes. [2025-03-03 16:42:28,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 864 of 864 statements. [2025-03-03 16:42:28,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:28,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-03-03 16:42:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332421959] [2025-03-03 16:42:28,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332421959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:28,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:28,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 16:42:28,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118188162] [2025-03-03 16:42:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:28,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 16:42:28,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:28,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 16:42:28,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:28,888 INFO L87 Difference]: Start difference. First operand 1705 states and 2542 transitions. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 16:42:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:29,332 INFO L93 Difference]: Finished difference Result 3138 states and 4677 transitions. [2025-03-03 16:42:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:29,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 864 [2025-03-03 16:42:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:29,336 INFO L225 Difference]: With dead ends: 3138 [2025-03-03 16:42:29,336 INFO L226 Difference]: Without dead ends: 1709 [2025-03-03 16:42:29,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:42:29,338 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 0 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:29,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5473 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2025-03-03 16:42:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1707. [2025-03-03 16:42:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.4912075029308323) internal successors, (2544), 1706 states have internal predecessors, (2544), 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 16:42:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2544 transitions. [2025-03-03 16:42:29,352 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2544 transitions. Word has length 864 [2025-03-03 16:42:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:29,353 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2544 transitions. [2025-03-03 16:42:29,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 16:42:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2544 transitions. [2025-03-03 16:42:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2025-03-03 16:42:29,358 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:29,358 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:29,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 16:42:29,358 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:29,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1639598799, now seen corresponding path program 1 times [2025-03-03 16:42:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:29,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122338878] [2025-03-03 16:42:29,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:29,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 865 statements into 1 equivalence classes. [2025-03-03 16:42:29,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 865 of 865 statements. [2025-03-03 16:42:29,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:29,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-03-03 16:42:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122338878] [2025-03-03 16:42:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122338878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100053649] [2025-03-03 16:42:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:30,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:30,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:30,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:30,318 INFO L87 Difference]: Start difference. First operand 1707 states and 2544 transitions. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:42:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:30,717 INFO L93 Difference]: Finished difference Result 3146 states and 4687 transitions. [2025-03-03 16:42:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 865 [2025-03-03 16:42:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:30,720 INFO L225 Difference]: With dead ends: 3146 [2025-03-03 16:42:30,720 INFO L226 Difference]: Without dead ends: 1711 [2025-03-03 16:42:30,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:30,722 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 0 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:30,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5473 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2025-03-03 16:42:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1709. [2025-03-03 16:42:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.490632318501171) internal successors, (2546), 1708 states have internal predecessors, (2546), 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 16:42:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2546 transitions. [2025-03-03 16:42:30,736 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2546 transitions. Word has length 865 [2025-03-03 16:42:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:30,737 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2546 transitions. [2025-03-03 16:42:30,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:42:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2546 transitions. [2025-03-03 16:42:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2025-03-03 16:42:30,741 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:30,742 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:30,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 16:42:30,742 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:30,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash -814534790, now seen corresponding path program 1 times [2025-03-03 16:42:30,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:30,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386326811] [2025-03-03 16:42:30,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:30,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:30,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 866 statements into 1 equivalence classes. [2025-03-03 16:42:31,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 866 of 866 statements. [2025-03-03 16:42:31,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:31,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 16:42:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386326811] [2025-03-03 16:42:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386326811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:31,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:31,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223895766] [2025-03-03 16:42:31,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:31,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:31,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:31,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:31,673 INFO L87 Difference]: Start difference. First operand 1709 states and 2546 transitions. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 16:42:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:32,073 INFO L93 Difference]: Finished difference Result 3154 states and 4697 transitions. [2025-03-03 16:42:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 866 [2025-03-03 16:42:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:32,077 INFO L225 Difference]: With dead ends: 3154 [2025-03-03 16:42:32,077 INFO L226 Difference]: Without dead ends: 1713 [2025-03-03 16:42:32,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:32,078 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 0 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:32,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5468 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2025-03-03 16:42:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1711. [2025-03-03 16:42:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 1.4900584795321636) internal successors, (2548), 1710 states have internal predecessors, (2548), 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 16:42:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2548 transitions. [2025-03-03 16:42:32,092 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2548 transitions. Word has length 866 [2025-03-03 16:42:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:32,092 INFO L471 AbstractCegarLoop]: Abstraction has 1711 states and 2548 transitions. [2025-03-03 16:42:32,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 16:42:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2548 transitions. [2025-03-03 16:42:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2025-03-03 16:42:32,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:32,099 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:32,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 16:42:32,099 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:32,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash 875171562, now seen corresponding path program 1 times [2025-03-03 16:42:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145229804] [2025-03-03 16:42:32,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:32,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 867 statements into 1 equivalence classes. [2025-03-03 16:42:32,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 867 of 867 statements. [2025-03-03 16:42:32,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:32,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-03-03 16:42:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:33,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145229804] [2025-03-03 16:42:33,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145229804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:33,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:33,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122418740] [2025-03-03 16:42:33,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:33,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:33,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:33,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:33,248 INFO L87 Difference]: Start difference. First operand 1711 states and 2548 transitions. Second operand has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 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 16:42:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:33,647 INFO L93 Difference]: Finished difference Result 3168 states and 4715 transitions. [2025-03-03 16:42:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 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 867 [2025-03-03 16:42:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:33,650 INFO L225 Difference]: With dead ends: 3168 [2025-03-03 16:42:33,650 INFO L226 Difference]: Without dead ends: 1725 [2025-03-03 16:42:33,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:33,652 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 3 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:33,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5473 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2025-03-03 16:42:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1715. [2025-03-03 16:42:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.4900816802800467) internal successors, (2554), 1714 states have internal predecessors, (2554), 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 16:42:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2554 transitions. [2025-03-03 16:42:33,665 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2554 transitions. Word has length 867 [2025-03-03 16:42:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:33,666 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2554 transitions. [2025-03-03 16:42:33,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 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 16:42:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2554 transitions. [2025-03-03 16:42:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2025-03-03 16:42:33,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:33,671 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 16:42:33,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:33,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 995766495, now seen corresponding path program 1 times [2025-03-03 16:42:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910640148] [2025-03-03 16:42:33,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:33,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 868 statements into 1 equivalence classes. [2025-03-03 16:42:33,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 868 of 868 statements. [2025-03-03 16:42:33,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:33,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-03 16:42:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:34,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910640148] [2025-03-03 16:42:34,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910640148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:34,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482562531] [2025-03-03 16:42:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:34,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:34,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:34,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:34,688 INFO L87 Difference]: Start difference. First operand 1715 states and 2554 transitions. Second operand has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 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 16:42:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:35,086 INFO L93 Difference]: Finished difference Result 3182 states and 4737 transitions. [2025-03-03 16:42:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 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 868 [2025-03-03 16:42:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:35,089 INFO L225 Difference]: With dead ends: 3182 [2025-03-03 16:42:35,089 INFO L226 Difference]: Without dead ends: 1727 [2025-03-03 16:42:35,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:35,090 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 4 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:35,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5473 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2025-03-03 16:42:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1721. [2025-03-03 16:42:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.4895348837209301) internal successors, (2562), 1720 states have internal predecessors, (2562), 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 16:42:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2562 transitions. [2025-03-03 16:42:35,102 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2562 transitions. Word has length 868 [2025-03-03 16:42:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:35,103 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2562 transitions. [2025-03-03 16:42:35,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 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 16:42:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2562 transitions. [2025-03-03 16:42:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2025-03-03 16:42:35,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:35,107 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:35,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 16:42:35,108 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:35,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:35,108 INFO L85 PathProgramCache]: Analyzing trace with hash -531200064, now seen corresponding path program 1 times [2025-03-03 16:42:35,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:35,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646893858] [2025-03-03 16:42:35,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:35,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:35,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 869 statements into 1 equivalence classes. [2025-03-03 16:42:35,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 869 of 869 statements. [2025-03-03 16:42:35,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:35,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-03 16:42:36,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:36,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646893858] [2025-03-03 16:42:36,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646893858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:36,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:36,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:36,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890787440] [2025-03-03 16:42:36,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:36,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:36,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:36,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:36,063 INFO L87 Difference]: Start difference. First operand 1721 states and 2562 transitions. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 16:42:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:36,460 INFO L93 Difference]: Finished difference Result 3202 states and 4765 transitions. [2025-03-03 16:42:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:36,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 869 [2025-03-03 16:42:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:36,463 INFO L225 Difference]: With dead ends: 3202 [2025-03-03 16:42:36,463 INFO L226 Difference]: Without dead ends: 1733 [2025-03-03 16:42:36,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:36,465 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 4 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:36,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5473 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2025-03-03 16:42:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1727. [2025-03-03 16:42:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.488991888760139) internal successors, (2570), 1726 states have internal predecessors, (2570), 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 16:42:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2570 transitions. [2025-03-03 16:42:36,481 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2570 transitions. Word has length 869 [2025-03-03 16:42:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:36,482 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2570 transitions. [2025-03-03 16:42:36,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 16:42:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2570 transitions. [2025-03-03 16:42:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2025-03-03 16:42:36,486 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:36,486 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:36,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 16:42:36,487 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:36,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 49726601, now seen corresponding path program 1 times [2025-03-03 16:42:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:36,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882953425] [2025-03-03 16:42:36,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:36,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 870 statements into 1 equivalence classes. [2025-03-03 16:42:36,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 870 of 870 statements. [2025-03-03 16:42:36,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:36,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-03 16:42:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882953425] [2025-03-03 16:42:37,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882953425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:37,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:37,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:37,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104527416] [2025-03-03 16:42:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:37,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:37,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:37,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:37,381 INFO L87 Difference]: Start difference. First operand 1727 states and 2570 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 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 16:42:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:37,790 INFO L93 Difference]: Finished difference Result 3214 states and 4781 transitions. [2025-03-03 16:42:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:37,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 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 870 [2025-03-03 16:42:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:37,793 INFO L225 Difference]: With dead ends: 3214 [2025-03-03 16:42:37,793 INFO L226 Difference]: Without dead ends: 1731 [2025-03-03 16:42:37,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:37,795 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 0 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:37,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5468 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2025-03-03 16:42:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1729. [2025-03-03 16:42:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 1.4884259259259258) internal successors, (2572), 1728 states have internal predecessors, (2572), 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 16:42:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2572 transitions. [2025-03-03 16:42:37,807 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2572 transitions. Word has length 870 [2025-03-03 16:42:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:37,808 INFO L471 AbstractCegarLoop]: Abstraction has 1729 states and 2572 transitions. [2025-03-03 16:42:37,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 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 16:42:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2572 transitions. [2025-03-03 16:42:37,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2025-03-03 16:42:37,812 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:37,812 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:37,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 16:42:37,813 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:37,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1146455653, now seen corresponding path program 1 times [2025-03-03 16:42:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:37,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846273860] [2025-03-03 16:42:37,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:37,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 871 statements into 1 equivalence classes. [2025-03-03 16:42:38,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 871 of 871 statements. [2025-03-03 16:42:38,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:38,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-03 16:42:38,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846273860] [2025-03-03 16:42:38,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846273860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:38,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:42:38,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:42:38,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690462810] [2025-03-03 16:42:38,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:38,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:42:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:38,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:42:38,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:38,774 INFO L87 Difference]: Start difference. First operand 1729 states and 2572 transitions. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 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 16:42:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:39,173 INFO L93 Difference]: Finished difference Result 3228 states and 4799 transitions. [2025-03-03 16:42:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:42:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 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 871 [2025-03-03 16:42:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:39,176 INFO L225 Difference]: With dead ends: 3228 [2025-03-03 16:42:39,176 INFO L226 Difference]: Without dead ends: 1743 [2025-03-03 16:42:39,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:42:39,178 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 3 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:39,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5473 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:42:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2025-03-03 16:42:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1733. [2025-03-03 16:42:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.4884526558891455) internal successors, (2578), 1732 states have internal predecessors, (2578), 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 16:42:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2578 transitions. [2025-03-03 16:42:39,190 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2578 transitions. Word has length 871 [2025-03-03 16:42:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:39,190 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2578 transitions. [2025-03-03 16:42:39,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 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 16:42:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2578 transitions. [2025-03-03 16:42:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2025-03-03 16:42:39,195 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:39,195 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:39,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 16:42:39,195 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:39,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:39,196 INFO L85 PathProgramCache]: Analyzing trace with hash -420016082, now seen corresponding path program 1 times [2025-03-03 16:42:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:39,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169645412] [2025-03-03 16:42:39,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:39,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:39,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 872 statements into 1 equivalence classes. [2025-03-03 16:42:39,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 872 of 872 statements. [2025-03-03 16:42:39,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:39,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:40,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169645412] [2025-03-03 16:42:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169645412] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:42:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937611147] [2025-03-03 16:42:40,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:40,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:40,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:42:40,314 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 16:42:40,315 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 16:42:40,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 872 statements into 1 equivalence classes. [2025-03-03 16:42:41,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 872 of 872 statements. [2025-03-03 16:42:41,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:41,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:41,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 16:42:41,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:42:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:42,282 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:42:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937611147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:42,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:42:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:42:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609176626] [2025-03-03 16:42:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:42,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:42:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:42,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:42:42,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:42:42,285 INFO L87 Difference]: Start difference. First operand 1733 states and 2578 transitions. Second operand has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 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 16:42:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:43,351 INFO L93 Difference]: Finished difference Result 4693 states and 6964 transitions. [2025-03-03 16:42:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:42:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 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 872 [2025-03-03 16:42:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:43,356 INFO L225 Difference]: With dead ends: 4693 [2025-03-03 16:42:43,356 INFO L226 Difference]: Without dead ends: 2884 [2025-03-03 16:42:43,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:42:43,359 INFO L435 NwaCegarLoop]: 1804 mSDtfsCounter, 2627 mSDsluCounter, 6761 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 8565 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:43,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2627 Valid, 8565 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 16:42:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2025-03-03 16:42:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1733. [2025-03-03 16:42:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.4878752886836029) internal successors, (2577), 1732 states have internal predecessors, (2577), 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 16:42:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2577 transitions. [2025-03-03 16:42:43,374 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2577 transitions. Word has length 872 [2025-03-03 16:42:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:43,374 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2577 transitions. [2025-03-03 16:42:43,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 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 16:42:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2577 transitions. [2025-03-03 16:42:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2025-03-03 16:42:43,379 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:43,379 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:43,403 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 16:42:43,579 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,SelfDestructingSolverStorable21 [2025-03-03 16:42:43,580 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:43,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1517287045, now seen corresponding path program 1 times [2025-03-03 16:42:43,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:43,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814068480] [2025-03-03 16:42:43,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:43,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 873 statements into 1 equivalence classes. [2025-03-03 16:42:43,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 873 of 873 statements. [2025-03-03 16:42:43,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:43,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814068480] [2025-03-03 16:42:44,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814068480] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:42:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880147230] [2025-03-03 16:42:44,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:44,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:44,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:42:44,683 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 16:42:44,684 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 16:42:45,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 873 statements into 1 equivalence classes. [2025-03-03 16:42:46,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 873 of 873 statements. [2025-03-03 16:42:46,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:46,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:46,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 16:42:46,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:42:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-03 16:42:46,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:42:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880147230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:46,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:42:46,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:42:46,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885774575] [2025-03-03 16:42:46,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:46,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:42:46,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:46,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:42:46,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:42:46,270 INFO L87 Difference]: Start difference. First operand 1733 states and 2577 transitions. Second operand has 6 states, 6 states have (on average 140.16666666666666) internal successors, (841), 6 states have internal predecessors, (841), 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 16:42:47,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:47,759 INFO L93 Difference]: Finished difference Result 4451 states and 6615 transitions. [2025-03-03 16:42:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:42:47,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 140.16666666666666) internal successors, (841), 6 states have internal predecessors, (841), 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 873 [2025-03-03 16:42:47,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:47,764 INFO L225 Difference]: With dead ends: 4451 [2025-03-03 16:42:47,764 INFO L226 Difference]: Without dead ends: 2932 [2025-03-03 16:42:47,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:42:47,766 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 2032 mSDsluCounter, 6171 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 7731 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:47,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 7731 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 16:42:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2025-03-03 16:42:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1733. [2025-03-03 16:42:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.48729792147806) internal successors, (2576), 1732 states have internal predecessors, (2576), 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 16:42:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2576 transitions. [2025-03-03 16:42:47,784 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2576 transitions. Word has length 873 [2025-03-03 16:42:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:47,784 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2576 transitions. [2025-03-03 16:42:47,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.16666666666666) internal successors, (841), 6 states have internal predecessors, (841), 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 16:42:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2576 transitions. [2025-03-03 16:42:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2025-03-03 16:42:47,789 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:47,790 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:47,808 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 16:42:47,990 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,SelfDestructingSolverStorable22 [2025-03-03 16:42:47,991 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:47,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1597216808, now seen corresponding path program 1 times [2025-03-03 16:42:47,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:47,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765028172] [2025-03-03 16:42:47,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:47,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:48,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 874 statements into 1 equivalence classes. [2025-03-03 16:42:48,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 874 of 874 statements. [2025-03-03 16:42:48,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:48,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765028172] [2025-03-03 16:42:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765028172] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:42:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8575087] [2025-03-03 16:42:49,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:42:49,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:42:49,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 16:42:50,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 874 statements into 1 equivalence classes. [2025-03-03 16:42:50,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 874 of 874 statements. [2025-03-03 16:42:50,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:50,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:50,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 16:42:50,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:42:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-03 16:42:51,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:42:51,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8575087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:51,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:42:51,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:42:51,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553755340] [2025-03-03 16:42:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:51,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:42:51,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:51,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:42:51,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:42:51,154 INFO L87 Difference]: Start difference. First operand 1733 states and 2576 transitions. Second operand has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 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 16:42:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:52,335 INFO L93 Difference]: Finished difference Result 4443 states and 6602 transitions. [2025-03-03 16:42:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:42:52,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 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 874 [2025-03-03 16:42:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:52,341 INFO L225 Difference]: With dead ends: 4443 [2025-03-03 16:42:52,341 INFO L226 Difference]: Without dead ends: 2940 [2025-03-03 16:42:52,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 872 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:42:52,343 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 3933 mSDsluCounter, 4800 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:52,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3933 Valid, 6361 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-03 16:42:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2025-03-03 16:42:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1733. [2025-03-03 16:42:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.4867205542725173) internal successors, (2575), 1732 states have internal predecessors, (2575), 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 16:42:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2575 transitions. [2025-03-03 16:42:52,363 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2575 transitions. Word has length 874 [2025-03-03 16:42:52,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:52,363 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2575 transitions. [2025-03-03 16:42:52,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 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 16:42:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2575 transitions. [2025-03-03 16:42:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2025-03-03 16:42:52,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:52,369 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:52,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 16:42:52,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:52,569 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:52,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash -187721351, now seen corresponding path program 1 times [2025-03-03 16:42:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843631996] [2025-03-03 16:42:52,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:52,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 875 statements into 1 equivalence classes. [2025-03-03 16:42:52,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 875 of 875 statements. [2025-03-03 16:42:52,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:52,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843631996] [2025-03-03 16:42:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843631996] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:42:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052563996] [2025-03-03 16:42:53,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:53,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:42:53,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:42:53,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 16:42:54,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 875 statements into 1 equivalence classes. [2025-03-03 16:42:55,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 875 of 875 statements. [2025-03-03 16:42:55,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:55,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:55,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 16:42:55,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:42:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 16:42:55,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:42:55,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052563996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:42:55,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:42:55,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:42:55,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042846152] [2025-03-03 16:42:55,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:42:55,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:42:55,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:42:55,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:42:55,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:42:55,883 INFO L87 Difference]: Start difference. First operand 1733 states and 2575 transitions. Second operand has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 16:42:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:42:57,112 INFO L93 Difference]: Finished difference Result 4435 states and 6589 transitions. [2025-03-03 16:42:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:42:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 875 [2025-03-03 16:42:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:42:57,116 INFO L225 Difference]: With dead ends: 4435 [2025-03-03 16:42:57,116 INFO L226 Difference]: Without dead ends: 2952 [2025-03-03 16:42:57,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:42:57,118 INFO L435 NwaCegarLoop]: 1562 mSDtfsCounter, 3945 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 6363 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 16:42:57,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3945 Valid, 6363 Invalid, 2603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 16:42:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2025-03-03 16:42:57,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1741. [2025-03-03 16:42:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 1.4850574712643678) internal successors, (2584), 1740 states have internal predecessors, (2584), 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 16:42:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2584 transitions. [2025-03-03 16:42:57,134 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2584 transitions. Word has length 875 [2025-03-03 16:42:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:42:57,134 INFO L471 AbstractCegarLoop]: Abstraction has 1741 states and 2584 transitions. [2025-03-03 16:42:57,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 16:42:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2584 transitions. [2025-03-03 16:42:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2025-03-03 16:42:57,139 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:42:57,139 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:57,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 16:42:57,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:57,340 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:42:57,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:42:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1626706735, now seen corresponding path program 1 times [2025-03-03 16:42:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:42:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404537478] [2025-03-03 16:42:57,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:42:57,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 876 statements into 1 equivalence classes. [2025-03-03 16:42:57,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 876 of 876 statements. [2025-03-03 16:42:57,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:42:57,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:42:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:42:58,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:42:58,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404537478] [2025-03-03 16:42:58,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404537478] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:42:58,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166566743] [2025-03-03 16:42:58,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:42:58,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:42:58,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:42:58,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:42:58,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 16:42:59,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 876 statements into 1 equivalence classes. [2025-03-03 16:43:00,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 876 of 876 statements. [2025-03-03 16:43:00,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:43:00,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:43:00,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 4051 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 16:43:00,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:43:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 16:43:00,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:43:00,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166566743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:43:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:43:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:43:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98863807] [2025-03-03 16:43:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:43:00,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:43:00,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:43:00,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:43:00,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:43:00,533 INFO L87 Difference]: Start difference. First operand 1741 states and 2584 transitions. Second operand has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 16:43:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:43:02,003 INFO L93 Difference]: Finished difference Result 4391 states and 6521 transitions. [2025-03-03 16:43:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:43:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 876 [2025-03-03 16:43:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:43:02,006 INFO L225 Difference]: With dead ends: 4391 [2025-03-03 16:43:02,006 INFO L226 Difference]: Without dead ends: 2960 [2025-03-03 16:43:02,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:43:02,007 INFO L435 NwaCegarLoop]: 1563 mSDtfsCounter, 2042 mSDsluCounter, 6174 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 7737 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:43:02,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 7737 Invalid, 3329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3307 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 16:43:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2025-03-03 16:43:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1753. [2025-03-03 16:43:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 1.4828767123287672) internal successors, (2598), 1752 states have internal predecessors, (2598), 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 16:43:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2598 transitions. [2025-03-03 16:43:02,026 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2598 transitions. Word has length 876 [2025-03-03 16:43:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:43:02,027 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2598 transitions. [2025-03-03 16:43:02,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 16:43:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2598 transitions. [2025-03-03 16:43:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2025-03-03 16:43:02,032 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:43:02,032 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:02,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 16:43:02,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-03 16:43:02,233 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:43:02,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:43:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash -79807987, now seen corresponding path program 1 times [2025-03-03 16:43:02,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:43:02,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345157368] [2025-03-03 16:43:02,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:43:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:43:02,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 877 statements into 1 equivalence classes. [2025-03-03 16:43:02,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 877 of 877 statements. [2025-03-03 16:43:02,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:43:02,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:43:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 67 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:43:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:43:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345157368] [2025-03-03 16:43:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345157368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:43:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041840096] [2025-03-03 16:43:03,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:43:03,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:43:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:43:03,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:43:03,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 16:43:04,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 877 statements into 1 equivalence classes. [2025-03-03 16:43:04,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 877 of 877 statements. [2025-03-03 16:43:04,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:43:04,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:43:04,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 4054 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 16:43:04,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:43:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:43:05,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:43:05,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041840096] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:43:05,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:43:05,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:43:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633824394] [2025-03-03 16:43:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:43:05,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:43:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:43:05,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:43:05,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:43:05,168 INFO L87 Difference]: Start difference. First operand 1753 states and 2598 transitions. Second operand has 6 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 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 16:43:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:43:06,477 INFO L93 Difference]: Finished difference Result 4721 states and 6983 transitions. [2025-03-03 16:43:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:43:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 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 877 [2025-03-03 16:43:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:43:06,480 INFO L225 Difference]: With dead ends: 4721 [2025-03-03 16:43:06,480 INFO L226 Difference]: Without dead ends: 3290 [2025-03-03 16:43:06,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:43:06,482 INFO L435 NwaCegarLoop]: 1648 mSDtfsCounter, 1811 mSDsluCounter, 6643 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 8291 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 16:43:06,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 8291 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 16:43:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2025-03-03 16:43:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 2183. [2025-03-03 16:43:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 1.472960586617782) internal successors, (3214), 2182 states have internal predecessors, (3214), 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 16:43:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3214 transitions. [2025-03-03 16:43:06,503 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3214 transitions. Word has length 877 [2025-03-03 16:43:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:43:06,503 INFO L471 AbstractCegarLoop]: Abstraction has 2183 states and 3214 transitions. [2025-03-03 16:43:06,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 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 16:43:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3214 transitions. [2025-03-03 16:43:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2025-03-03 16:43:06,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:43:06,509 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:06,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 16:43:06,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-03 16:43:06,710 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:43:06,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:43:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1809861334, now seen corresponding path program 1 times [2025-03-03 16:43:06,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:43:06,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151338636] [2025-03-03 16:43:06,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:43:06,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:43:06,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 878 statements into 1 equivalence classes. [2025-03-03 16:43:06,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 878 of 878 statements. [2025-03-03 16:43:06,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:43:06,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:43:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 67 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:43:07,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:43:07,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151338636] [2025-03-03 16:43:07,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151338636] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:43:07,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630195093] [2025-03-03 16:43:07,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:43:07,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:43:07,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:43:07,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:43:07,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 16:43:08,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 878 statements into 1 equivalence classes. [2025-03-03 16:43:09,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 878 of 878 statements. [2025-03-03 16:43:09,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:43:09,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:43:09,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 16:43:09,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:43:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:43:10,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:43:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630195093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:43:10,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 16:43:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 16:43:10,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626583825] [2025-03-03 16:43:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:43:10,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:43:10,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:43:10,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:43:10,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-03 16:43:10,645 INFO L87 Difference]: Start difference. First operand 2183 states and 3214 transitions. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 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)