./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop3-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop3-func-interl.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 d8441fc60171cc197e6941bd5dc3cc65ef17dd7c903513ca4a8e24090c4956dc --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 23:52:17,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 23:52:17,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-07 23:52:17,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 23:52:17,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 23:52:17,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 23:52:17,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 23:52:17,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 23:52:17,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 23:52:17,372 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 23:52:17,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 23:52:17,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 23:52:17,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 23:52:17,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 23:52:17,373 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 23:52:17,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 23:52:17,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 23:52:17,374 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 23:52:17,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 23:52:17,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 23:52:17,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 23:52:17,375 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 23:52:17,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 23:52:17,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 23:52:17,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 23:52:17,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 23:52:17,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 23:52:17,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 23:52:17,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 23:52:17,376 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-jdk21/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 -> d8441fc60171cc197e6941bd5dc3cc65ef17dd7c903513ca4a8e24090c4956dc [2025-02-07 23:52:17,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 23:52:17,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 23:52:17,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 23:52:17,579 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 23:52:17,579 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 23:52:17,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop3-func-interl.c [2025-02-07 23:52:18,845 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f9274385/67a4549c71464629944b4a96d4a5becd/FLAG561f2edcc [2025-02-07 23:52:19,126 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 23:52:19,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop3-func-interl.c [2025-02-07 23:52:19,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f9274385/67a4549c71464629944b4a96d4a5becd/FLAG561f2edcc [2025-02-07 23:52:19,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f9274385/67a4549c71464629944b4a96d4a5becd [2025-02-07 23:52:19,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 23:52:19,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 23:52:19,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 23:52:19,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 23:52:19,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 23:52:19,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 11:52:19" (1/1) ... [2025-02-07 23:52:19,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cef52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:19, skipping insertion in model container [2025-02-07 23:52:19,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 11:52:19" (1/1) ... [2025-02-07 23:52:19,473 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 23:52:19,656 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop3-func-interl.c[1177,1190] [2025-02-07 23:52:19,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 23:52:19,954 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 23:52:19,962 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop3-func-interl.c[1177,1190] [2025-02-07 23:52:20,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 23:52:20,059 INFO L204 MainTranslator]: Completed translation [2025-02-07 23:52:20,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20 WrapperNode [2025-02-07 23:52:20,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 23:52:20,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 23:52:20,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 23:52:20,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 23:52:20,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:20,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:20,637 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5250 [2025-02-07 23:52:20,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 23:52:20,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 23:52:20,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 23:52:20,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 23:52:20,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:20,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:20,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:20,986 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]. [2025-02-07 23:52:20,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:20,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:21,139 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:21,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:21,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:21,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:21,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 23:52:21,274 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 23:52:21,274 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 23:52:21,274 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 23:52:21,275 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (1/1) ... [2025-02-07 23:52:21,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 23:52:21,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 23:52:21,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 23:52:21,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 23:52:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 23:52:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 23:52:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 23:52:21,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 23:52:21,594 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 23:52:21,596 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 23:52:26,577 INFO L? ?]: Removed 2908 outVars from TransFormulas that were not future-live. [2025-02-07 23:52:26,577 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 23:52:26,808 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 23:52:26,809 INFO L337 CfgBuilder]: Removed 3 assume(true) statements. [2025-02-07 23:52:26,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 11:52:26 BoogieIcfgContainer [2025-02-07 23:52:26,809 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 23:52:26,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 23:52:26,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 23:52:26,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 23:52:26,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 11:52:19" (1/3) ... [2025-02-07 23:52:26,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5451e0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 11:52:26, skipping insertion in model container [2025-02-07 23:52:26,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:52:20" (2/3) ... [2025-02-07 23:52:26,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5451e0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 11:52:26, skipping insertion in model container [2025-02-07 23:52:26,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 11:52:26" (3/3) ... [2025-02-07 23:52:26,816 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.resistance.1.prop3-func-interl.c [2025-02-07 23:52:26,827 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 23:52:26,828 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.resistance.1.prop3-func-interl.c that has 1 procedures, 1873 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 23:52:26,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 23:52:26,896 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;@44232d79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 23:52:26,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 23:52:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 1873 states, 1871 states have (on average 1.5008017103153395) internal successors, (2808), 1872 states have internal predecessors, (2808), 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) [2025-02-07 23:52:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-07 23:52:26,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:26,910 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] [2025-02-07 23:52:26,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:26,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash -854983683, now seen corresponding path program 1 times [2025-02-07 23:52:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:26,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478006501] [2025-02-07 23:52:26,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:27,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-07 23:52:27,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-07 23:52:27,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:27,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:27,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:27,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478006501] [2025-02-07 23:52:27,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478006501] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:27,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 23:52:27,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637047806] [2025-02-07 23:52:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:27,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 23:52:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:27,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 23:52:27,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 23:52:27,597 INFO L87 Difference]: Start difference. First operand has 1873 states, 1871 states have (on average 1.5008017103153395) internal successors, (2808), 1872 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2025-02-07 23:52:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:28,257 INFO L93 Difference]: Finished difference Result 3644 states and 5466 transitions. [2025-02-07 23:52:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 23:52:28,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2025-02-07 23:52:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:28,275 INFO L225 Difference]: With dead ends: 3644 [2025-02-07 23:52:28,275 INFO L226 Difference]: Without dead ends: 1872 [2025-02-07 23:52:28,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 23:52:28,284 INFO L435 NwaCegarLoop]: 2337 mSDtfsCounter, 0 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:28,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 23:52:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2025-02-07 23:52:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1872. [2025-02-07 23:52:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.4997327632282202) internal successors, (2806), 1871 states have internal predecessors, (2806), 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) [2025-02-07 23:52:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2806 transitions. [2025-02-07 23:52:28,397 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2806 transitions. Word has length 102 [2025-02-07 23:52:28,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:28,398 INFO L471 AbstractCegarLoop]: Abstraction has 1872 states and 2806 transitions. [2025-02-07 23:52:28,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2025-02-07 23:52:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2806 transitions. [2025-02-07 23:52:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-07 23:52:28,403 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:28,404 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] [2025-02-07 23:52:28,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 23:52:28,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:28,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1017143774, now seen corresponding path program 1 times [2025-02-07 23:52:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623709766] [2025-02-07 23:52:28,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:28,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:28,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-07 23:52:28,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-07 23:52:28,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:28,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:28,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623709766] [2025-02-07 23:52:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623709766] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:28,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:52:28,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957639511] [2025-02-07 23:52:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:28,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:52:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:28,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:52:28,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:52:28,847 INFO L87 Difference]: Start difference. First operand 1872 states and 2806 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-02-07 23:52:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:29,677 INFO L93 Difference]: Finished difference Result 1876 states and 2810 transitions. [2025-02-07 23:52:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:52:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2025-02-07 23:52:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:29,683 INFO L225 Difference]: With dead ends: 1876 [2025-02-07 23:52:29,683 INFO L226 Difference]: Without dead ends: 1874 [2025-02-07 23:52:29,684 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 [2025-02-07 23:52:29,685 INFO L435 NwaCegarLoop]: 2336 mSDtfsCounter, 0 mSDsluCounter, 4667 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7003 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:29,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7003 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 23:52:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2025-02-07 23:52:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1874. [2025-02-07 23:52:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1873 states have (on average 1.4991991457554725) internal successors, (2808), 1873 states have internal predecessors, (2808), 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) [2025-02-07 23:52:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2808 transitions. [2025-02-07 23:52:29,717 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2808 transitions. Word has length 102 [2025-02-07 23:52:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:29,717 INFO L471 AbstractCegarLoop]: Abstraction has 1874 states and 2808 transitions. [2025-02-07 23:52:29,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-02-07 23:52:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2808 transitions. [2025-02-07 23:52:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-07 23:52:29,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:29,719 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] [2025-02-07 23:52:29,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 23:52:29,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:29,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1471367975, now seen corresponding path program 1 times [2025-02-07 23:52:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:29,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687281648] [2025-02-07 23:52:29,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:29,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-07 23:52:29,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-07 23:52:29,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:29,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:30,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:30,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687281648] [2025-02-07 23:52:30,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687281648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:30,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:30,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:52:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703801346] [2025-02-07 23:52:30,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:30,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:52:30,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:30,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:52:30,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:52:30,040 INFO L87 Difference]: Start difference. First operand 1874 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2025-02-07 23:52:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:30,810 INFO L93 Difference]: Finished difference Result 3649 states and 5468 transitions. [2025-02-07 23:52:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:52:30,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2025-02-07 23:52:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:30,816 INFO L225 Difference]: With dead ends: 3649 [2025-02-07 23:52:30,816 INFO L226 Difference]: Without dead ends: 1876 [2025-02-07 23:52:30,818 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 [2025-02-07 23:52:30,819 INFO L435 NwaCegarLoop]: 2336 mSDtfsCounter, 0 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7000 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:30,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7000 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 23:52:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2025-02-07 23:52:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1876. [2025-02-07 23:52:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 1.4986666666666666) internal successors, (2810), 1875 states have internal predecessors, (2810), 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) [2025-02-07 23:52:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2810 transitions. [2025-02-07 23:52:30,848 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2810 transitions. Word has length 103 [2025-02-07 23:52:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:30,848 INFO L471 AbstractCegarLoop]: Abstraction has 1876 states and 2810 transitions. [2025-02-07 23:52:30,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2025-02-07 23:52:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2810 transitions. [2025-02-07 23:52:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-07 23:52:30,849 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:30,850 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] [2025-02-07 23:52:30,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 23:52:30,850 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:30,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 299279097, now seen corresponding path program 1 times [2025-02-07 23:52:30,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:30,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573898406] [2025-02-07 23:52:30,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:30,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-07 23:52:30,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-07 23:52:30,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:30,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:31,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573898406] [2025-02-07 23:52:31,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573898406] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:31,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 23:52:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246593868] [2025-02-07 23:52:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:31,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:52:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:31,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:52:31,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:52:31,092 INFO L87 Difference]: Start difference. First operand 1876 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2025-02-07 23:52:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:31,958 INFO L93 Difference]: Finished difference Result 3657 states and 5478 transitions. [2025-02-07 23:52:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 23:52:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 104 [2025-02-07 23:52:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:31,964 INFO L225 Difference]: With dead ends: 3657 [2025-02-07 23:52:31,964 INFO L226 Difference]: Without dead ends: 1882 [2025-02-07 23:52:31,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:52:31,967 INFO L435 NwaCegarLoop]: 2335 mSDtfsCounter, 4 mSDsluCounter, 6995 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9330 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:31,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9330 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 23:52:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2025-02-07 23:52:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1882. [2025-02-07 23:52:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 1.4981392876129718) internal successors, (2818), 1881 states have internal predecessors, (2818), 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) [2025-02-07 23:52:31,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2818 transitions. [2025-02-07 23:52:31,997 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2818 transitions. Word has length 104 [2025-02-07 23:52:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:31,997 INFO L471 AbstractCegarLoop]: Abstraction has 1882 states and 2818 transitions. [2025-02-07 23:52:31,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2025-02-07 23:52:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2818 transitions. [2025-02-07 23:52:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-07 23:52:31,998 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:31,998 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] [2025-02-07 23:52:31,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-07 23:52:31,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:31,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash -233204623, now seen corresponding path program 1 times [2025-02-07 23:52:31,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408649801] [2025-02-07 23:52:31,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:31,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:32,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-07 23:52:32,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-07 23:52:32,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:32,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:32,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408649801] [2025-02-07 23:52:32,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408649801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:32,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:32,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:52:32,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031309468] [2025-02-07 23:52:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:32,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:52:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:32,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:52:32,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:52:32,159 INFO L87 Difference]: Start difference. First operand 1882 states and 2818 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2025-02-07 23:52:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:32,848 INFO L93 Difference]: Finished difference Result 3665 states and 5488 transitions. [2025-02-07 23:52:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:52:32,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 105 [2025-02-07 23:52:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:32,854 INFO L225 Difference]: With dead ends: 3665 [2025-02-07 23:52:32,854 INFO L226 Difference]: Without dead ends: 1884 [2025-02-07 23:52:32,856 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 [2025-02-07 23:52:32,857 INFO L435 NwaCegarLoop]: 2336 mSDtfsCounter, 0 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6995 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:32,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6995 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 23:52:32,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2025-02-07 23:52:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1884. [2025-02-07 23:52:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 1.4976101964949549) internal successors, (2820), 1883 states have internal predecessors, (2820), 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) [2025-02-07 23:52:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2820 transitions. [2025-02-07 23:52:32,887 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2820 transitions. Word has length 105 [2025-02-07 23:52:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:32,887 INFO L471 AbstractCegarLoop]: Abstraction has 1884 states and 2820 transitions. [2025-02-07 23:52:32,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2025-02-07 23:52:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2820 transitions. [2025-02-07 23:52:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-07 23:52:32,888 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:32,888 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] [2025-02-07 23:52:32,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 23:52:32,889 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:32,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash 689946356, now seen corresponding path program 1 times [2025-02-07 23:52:32,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545277948] [2025-02-07 23:52:32,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:32,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-07 23:52:32,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-07 23:52:32,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:32,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:33,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:33,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545277948] [2025-02-07 23:52:33,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545277948] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:33,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:52:33,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046786980] [2025-02-07 23:52:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:33,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:52:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:33,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:52:33,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:52:33,226 INFO L87 Difference]: Start difference. First operand 1884 states and 2820 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2025-02-07 23:52:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:34,109 INFO L93 Difference]: Finished difference Result 3671 states and 5494 transitions. [2025-02-07 23:52:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:52:34,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2025-02-07 23:52:34,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:34,117 INFO L225 Difference]: With dead ends: 3671 [2025-02-07 23:52:34,117 INFO L226 Difference]: Without dead ends: 1888 [2025-02-07 23:52:34,119 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 [2025-02-07 23:52:34,121 INFO L435 NwaCegarLoop]: 2336 mSDtfsCounter, 0 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6995 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:34,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6995 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 23:52:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2025-02-07 23:52:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2025-02-07 23:52:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 1.4976101964949549) internal successors, (2820), 1883 states have internal predecessors, (2820), 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) [2025-02-07 23:52:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2820 transitions. [2025-02-07 23:52:34,156 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2820 transitions. Word has length 106 [2025-02-07 23:52:34,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:34,156 INFO L471 AbstractCegarLoop]: Abstraction has 1884 states and 2820 transitions. [2025-02-07 23:52:34,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2025-02-07 23:52:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2820 transitions. [2025-02-07 23:52:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-07 23:52:34,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:34,157 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] [2025-02-07 23:52:34,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-07 23:52:34,159 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:34,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:34,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1801865969, now seen corresponding path program 1 times [2025-02-07 23:52:34,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:34,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403603035] [2025-02-07 23:52:34,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:34,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:34,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-07 23:52:34,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-07 23:52:34,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:34,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:34,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403603035] [2025-02-07 23:52:34,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403603035] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:34,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:34,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 23:52:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679914213] [2025-02-07 23:52:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:34,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 23:52:34,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:34,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 23:52:34,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-07 23:52:34,712 INFO L87 Difference]: Start difference. First operand 1884 states and 2820 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-02-07 23:52:35,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:35,874 INFO L93 Difference]: Finished difference Result 3675 states and 5500 transitions. [2025-02-07 23:52:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 23:52:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 states have internal predecessors, (107), 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 107 [2025-02-07 23:52:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:35,879 INFO L225 Difference]: With dead ends: 3675 [2025-02-07 23:52:35,880 INFO L226 Difference]: Without dead ends: 1892 [2025-02-07 23:52:35,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-07 23:52:35,882 INFO L435 NwaCegarLoop]: 2332 mSDtfsCounter, 2727 mSDsluCounter, 9305 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 11637 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:35,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2727 Valid, 11637 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 23:52:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2025-02-07 23:52:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1888. [2025-02-07 23:52:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.4976152623211447) internal successors, (2826), 1887 states have internal predecessors, (2826), 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) [2025-02-07 23:52:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2826 transitions. [2025-02-07 23:52:35,906 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2826 transitions. Word has length 107 [2025-02-07 23:52:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:35,906 INFO L471 AbstractCegarLoop]: Abstraction has 1888 states and 2826 transitions. [2025-02-07 23:52:35,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-02-07 23:52:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2826 transitions. [2025-02-07 23:52:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-07 23:52:35,907 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:35,907 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] [2025-02-07 23:52:35,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-07 23:52:35,908 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:35,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1896753105, now seen corresponding path program 1 times [2025-02-07 23:52:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:35,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117901746] [2025-02-07 23:52:35,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:35,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-07 23:52:35,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-07 23:52:35,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:35,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:36,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:36,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117901746] [2025-02-07 23:52:36,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117901746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:36,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:36,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:52:36,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256959603] [2025-02-07 23:52:36,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:36,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:52:36,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:36,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:52:36,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:52:36,481 INFO L87 Difference]: Start difference. First operand 1888 states and 2826 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2025-02-07 23:52:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:37,402 INFO L93 Difference]: Finished difference Result 3672 states and 5498 transitions. [2025-02-07 23:52:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:52:37,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 108 [2025-02-07 23:52:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:37,411 INFO L225 Difference]: With dead ends: 3672 [2025-02-07 23:52:37,415 INFO L226 Difference]: Without dead ends: 1885 [2025-02-07 23:52:37,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:52:37,423 INFO L435 NwaCegarLoop]: 2285 mSDtfsCounter, 2712 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:37,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2712 Valid, 6851 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-07 23:52:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2025-02-07 23:52:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2025-02-07 23:52:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 1.496284501061571) internal successors, (2819), 1884 states have internal predecessors, (2819), 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) [2025-02-07 23:52:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2819 transitions. [2025-02-07 23:52:37,490 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2819 transitions. Word has length 108 [2025-02-07 23:52:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:37,490 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2819 transitions. [2025-02-07 23:52:37,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2025-02-07 23:52:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2819 transitions. [2025-02-07 23:52:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-02-07 23:52:37,491 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:37,491 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] [2025-02-07 23:52:37,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-07 23:52:37,496 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:37,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1574889293, now seen corresponding path program 1 times [2025-02-07 23:52:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823746298] [2025-02-07 23:52:37,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:37,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-02-07 23:52:37,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-02-07 23:52:37,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:37,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:37,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:37,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823746298] [2025-02-07 23:52:37,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823746298] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:37,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:37,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:52:37,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781354020] [2025-02-07 23:52:37,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:37,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:52:37,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:37,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:52:37,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:52:37,906 INFO L87 Difference]: Start difference. First operand 1885 states and 2819 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-02-07 23:52:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:39,592 INFO L93 Difference]: Finished difference Result 5047 states and 7549 transitions. [2025-02-07 23:52:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 23:52:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 109 [2025-02-07 23:52:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:39,599 INFO L225 Difference]: With dead ends: 5047 [2025-02-07 23:52:39,599 INFO L226 Difference]: Without dead ends: 3263 [2025-02-07 23:52:39,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:52:39,601 INFO L435 NwaCegarLoop]: 2324 mSDtfsCounter, 2123 mSDsluCounter, 6842 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 9166 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:39,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 9166 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-07 23:52:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2025-02-07 23:52:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 1966. [2025-02-07 23:52:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 1.495674300254453) internal successors, (2939), 1965 states have internal predecessors, (2939), 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) [2025-02-07 23:52:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2939 transitions. [2025-02-07 23:52:39,630 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2939 transitions. Word has length 109 [2025-02-07 23:52:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:39,630 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2939 transitions. [2025-02-07 23:52:39,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-02-07 23:52:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2939 transitions. [2025-02-07 23:52:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2025-02-07 23:52:39,644 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:39,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:52:39,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-07 23:52:39,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:39,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1335304219, now seen corresponding path program 1 times [2025-02-07 23:52:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878881923] [2025-02-07 23:52:39,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:39,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:39,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 984 statements into 1 equivalence classes. [2025-02-07 23:52:40,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 984 of 984 statements. [2025-02-07 23:52:40,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:40,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:41,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878881923] [2025-02-07 23:52:41,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878881923] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:41,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:41,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 23:52:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612050401] [2025-02-07 23:52:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:41,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 23:52:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:41,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 23:52:41,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 23:52:41,114 INFO L87 Difference]: Start difference. First operand 1966 states and 2939 transitions. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2025-02-07 23:52:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:41,856 INFO L93 Difference]: Finished difference Result 3751 states and 5609 transitions. [2025-02-07 23:52:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 23:52:41,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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 984 [2025-02-07 23:52:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:41,868 INFO L225 Difference]: With dead ends: 3751 [2025-02-07 23:52:41,869 INFO L226 Difference]: Without dead ends: 1967 [2025-02-07 23:52:41,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 23:52:41,875 INFO L435 NwaCegarLoop]: 2333 mSDtfsCounter, 0 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4661 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:41,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4661 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 23:52:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2025-02-07 23:52:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1967. [2025-02-07 23:52:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 1.4954221770091556) internal successors, (2940), 1966 states have internal predecessors, (2940), 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) [2025-02-07 23:52:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2940 transitions. [2025-02-07 23:52:41,917 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2940 transitions. Word has length 984 [2025-02-07 23:52:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:41,917 INFO L471 AbstractCegarLoop]: Abstraction has 1967 states and 2940 transitions. [2025-02-07 23:52:41,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2025-02-07 23:52:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2940 transitions. [2025-02-07 23:52:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2025-02-07 23:52:41,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:41,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:52:41,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-07 23:52:41,935 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:41,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:41,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1774219460, now seen corresponding path program 1 times [2025-02-07 23:52:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:41,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881211945] [2025-02-07 23:52:41,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:42,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 984 statements into 1 equivalence classes. [2025-02-07 23:52:42,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 984 of 984 statements. [2025-02-07 23:52:42,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:42,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881211945] [2025-02-07 23:52:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881211945] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:43,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:43,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 23:52:43,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197289322] [2025-02-07 23:52:43,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:43,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 23:52:43,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:43,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 23:52:43,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 23:52:43,543 INFO L87 Difference]: Start difference. First operand 1967 states and 2940 transitions. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2025-02-07 23:52:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:44,082 INFO L93 Difference]: Finished difference Result 3753 states and 5611 transitions. [2025-02-07 23:52:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 23:52:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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 984 [2025-02-07 23:52:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:44,088 INFO L225 Difference]: With dead ends: 3753 [2025-02-07 23:52:44,088 INFO L226 Difference]: Without dead ends: 1968 [2025-02-07 23:52:44,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 23:52:44,090 INFO L435 NwaCegarLoop]: 2333 mSDtfsCounter, 0 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4661 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:44,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4661 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-07 23:52:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2025-02-07 23:52:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1968. [2025-02-07 23:52:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 1.4951703101169294) internal successors, (2941), 1967 states have internal predecessors, (2941), 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) [2025-02-07 23:52:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2941 transitions. [2025-02-07 23:52:44,121 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2941 transitions. Word has length 984 [2025-02-07 23:52:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:44,121 INFO L471 AbstractCegarLoop]: Abstraction has 1968 states and 2941 transitions. [2025-02-07 23:52:44,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2025-02-07 23:52:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2941 transitions. [2025-02-07 23:52:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2025-02-07 23:52:44,144 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:44,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:52:44,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-07 23:52:44,145 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:44,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1032575901, now seen corresponding path program 1 times [2025-02-07 23:52:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921359419] [2025-02-07 23:52:44,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:44,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 984 statements into 1 equivalence classes. [2025-02-07 23:52:44,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 984 of 984 statements. [2025-02-07 23:52:44,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:44,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:46,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921359419] [2025-02-07 23:52:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921359419] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 23:52:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300777220] [2025-02-07 23:52:46,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 23:52:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 23:52:46,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 23:52:46,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 23:52:47,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 984 statements into 1 equivalence classes. [2025-02-07 23:52:47,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 984 of 984 statements. [2025-02-07 23:52:47,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:47,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:47,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 4263 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 23:52:48,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 23:52:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:49,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 23:52:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300777220] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 23:52:51,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 23:52:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-07 23:52:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491219732] [2025-02-07 23:52:51,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 23:52:51,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 23:52:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:51,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 23:52:51,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-02-07 23:52:51,281 INFO L87 Difference]: Start difference. First operand 1968 states and 2941 transitions. Second operand has 14 states, 14 states have (on average 144.07142857142858) internal successors, (2017), 14 states have internal predecessors, (2017), 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) [2025-02-07 23:52:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:56,977 INFO L93 Difference]: Finished difference Result 13919 states and 20825 transitions. [2025-02-07 23:52:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-07 23:52:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 144.07142857142858) internal successors, (2017), 14 states have internal predecessors, (2017), 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 984 [2025-02-07 23:52:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:57,002 INFO L225 Difference]: With dead ends: 13919 [2025-02-07 23:52:57,002 INFO L226 Difference]: Without dead ends: 9487 [2025-02-07 23:52:57,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 1962 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=1729, Unknown=0, NotChecked=0, Total=2070 [2025-02-07 23:52:57,005 INFO L435 NwaCegarLoop]: 3835 mSDtfsCounter, 23771 mSDsluCounter, 32637 mSDsCounter, 0 mSdLazyCounter, 10044 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23771 SdHoareTripleChecker+Valid, 36472 SdHoareTripleChecker+Invalid, 10147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 10044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:57,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23771 Valid, 36472 Invalid, 10147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 10044 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-02-07 23:52:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2025-02-07 23:52:57,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 3607. [2025-02-07 23:52:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3606 states have (on average 1.4947310038824182) internal successors, (5390), 3606 states have internal predecessors, (5390), 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) [2025-02-07 23:52:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 5390 transitions. [2025-02-07 23:52:57,081 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 5390 transitions. Word has length 984 [2025-02-07 23:52:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:57,082 INFO L471 AbstractCegarLoop]: Abstraction has 3607 states and 5390 transitions. [2025-02-07 23:52:57,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 144.07142857142858) internal successors, (2017), 14 states have internal predecessors, (2017), 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) [2025-02-07 23:52:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 5390 transitions. [2025-02-07 23:52:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2025-02-07 23:52:57,091 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:57,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:52:57,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 23:52:57,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 23:52:57,292 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:57,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1574915325, now seen corresponding path program 1 times [2025-02-07 23:52:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:57,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750877446] [2025-02-07 23:52:57,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:57,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:57,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 986 statements into 1 equivalence classes. [2025-02-07 23:52:57,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 986 of 986 statements. [2025-02-07 23:52:57,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:57,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:52:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:52:58,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:52:58,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750877446] [2025-02-07 23:52:58,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750877446] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:52:58,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:52:58,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 23:52:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793168734] [2025-02-07 23:52:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:52:58,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:52:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:52:58,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:52:58,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:52:58,499 INFO L87 Difference]: Start difference. First operand 3607 states and 5390 transitions. Second operand has 5 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 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) [2025-02-07 23:52:59,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:52:59,642 INFO L93 Difference]: Finished difference Result 7115 states and 10632 transitions. [2025-02-07 23:52:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 23:52:59,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 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 986 [2025-02-07 23:52:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:52:59,648 INFO L225 Difference]: With dead ends: 7115 [2025-02-07 23:52:59,648 INFO L226 Difference]: Without dead ends: 3609 [2025-02-07 23:52:59,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:52:59,654 INFO L435 NwaCegarLoop]: 1845 mSDtfsCounter, 2698 mSDsluCounter, 3682 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 23:52:59,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 5527 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 23:52:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2025-02-07 23:52:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 3609. [2025-02-07 23:52:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 1.4944567627494456) internal successors, (5392), 3608 states have internal predecessors, (5392), 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) [2025-02-07 23:52:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5392 transitions. [2025-02-07 23:52:59,691 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5392 transitions. Word has length 986 [2025-02-07 23:52:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:52:59,691 INFO L471 AbstractCegarLoop]: Abstraction has 3609 states and 5392 transitions. [2025-02-07 23:52:59,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 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) [2025-02-07 23:52:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5392 transitions. [2025-02-07 23:52:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2025-02-07 23:52:59,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:52:59,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:52:59,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-07 23:52:59,701 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:52:59,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:52:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash 988458955, now seen corresponding path program 1 times [2025-02-07 23:52:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:52:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977543804] [2025-02-07 23:52:59,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:52:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:52:59,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 987 statements into 1 equivalence classes. [2025-02-07 23:52:59,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 987 of 987 statements. [2025-02-07 23:52:59,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:52:59,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977543804] [2025-02-07 23:53:00,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977543804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:00,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:00,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:53:00,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802174170] [2025-02-07 23:53:00,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:00,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:53:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:00,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:53:00,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:00,748 INFO L87 Difference]: Start difference. First operand 3609 states and 5392 transitions. Second operand has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 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) [2025-02-07 23:53:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:01,384 INFO L93 Difference]: Finished difference Result 7119 states and 10636 transitions. [2025-02-07 23:53:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:53:01,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 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 987 [2025-02-07 23:53:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:01,390 INFO L225 Difference]: With dead ends: 7119 [2025-02-07 23:53:01,390 INFO L226 Difference]: Without dead ends: 3611 [2025-02-07 23:53:01,393 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 [2025-02-07 23:53:01,394 INFO L435 NwaCegarLoop]: 2332 mSDtfsCounter, 0 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6983 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:01,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6983 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 23:53:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2025-02-07 23:53:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2025-02-07 23:53:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 1.4941828254847644) internal successors, (5394), 3610 states have internal predecessors, (5394), 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) [2025-02-07 23:53:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5394 transitions. [2025-02-07 23:53:01,431 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5394 transitions. Word has length 987 [2025-02-07 23:53:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:01,431 INFO L471 AbstractCegarLoop]: Abstraction has 3611 states and 5394 transitions. [2025-02-07 23:53:01,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 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) [2025-02-07 23:53:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5394 transitions. [2025-02-07 23:53:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2025-02-07 23:53:01,439 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:01,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:01,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-07 23:53:01,440 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:01,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -983235800, now seen corresponding path program 1 times [2025-02-07 23:53:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:01,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386971815] [2025-02-07 23:53:01,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:01,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 988 statements into 1 equivalence classes. [2025-02-07 23:53:02,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 988 of 988 statements. [2025-02-07 23:53:02,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:02,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386971815] [2025-02-07 23:53:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386971815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:03,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:53:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271912887] [2025-02-07 23:53:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:03,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:53:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:03,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:53:03,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:03,323 INFO L87 Difference]: Start difference. First operand 3611 states and 5394 transitions. Second operand has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2025-02-07 23:53:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:04,421 INFO L93 Difference]: Finished difference Result 7121 states and 10637 transitions. [2025-02-07 23:53:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:53:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 988 [2025-02-07 23:53:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:04,427 INFO L225 Difference]: With dead ends: 7121 [2025-02-07 23:53:04,427 INFO L226 Difference]: Without dead ends: 3611 [2025-02-07 23:53:04,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:04,431 INFO L435 NwaCegarLoop]: 1846 mSDtfsCounter, 2590 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:04,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 3684 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 23:53:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2025-02-07 23:53:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2025-02-07 23:53:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 1.493628808864266) internal successors, (5392), 3610 states have internal predecessors, (5392), 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) [2025-02-07 23:53:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5392 transitions. [2025-02-07 23:53:04,464 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5392 transitions. Word has length 988 [2025-02-07 23:53:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:04,465 INFO L471 AbstractCegarLoop]: Abstraction has 3611 states and 5392 transitions. [2025-02-07 23:53:04,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2025-02-07 23:53:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5392 transitions. [2025-02-07 23:53:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2025-02-07 23:53:04,473 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:04,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:04,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-07 23:53:04,474 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:04,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1659062208, now seen corresponding path program 1 times [2025-02-07 23:53:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:04,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487924242] [2025-02-07 23:53:04,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:04,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:04,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 989 statements into 1 equivalence classes. [2025-02-07 23:53:05,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 989 of 989 statements. [2025-02-07 23:53:05,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:05,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:06,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487924242] [2025-02-07 23:53:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487924242] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:06,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:06,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:53:06,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668791526] [2025-02-07 23:53:06,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:06,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:53:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:06,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:53:06,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:06,479 INFO L87 Difference]: Start difference. First operand 3611 states and 5392 transitions. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 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) [2025-02-07 23:53:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:07,351 INFO L93 Difference]: Finished difference Result 7121 states and 10633 transitions. [2025-02-07 23:53:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:53:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 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 989 [2025-02-07 23:53:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:07,357 INFO L225 Difference]: With dead ends: 7121 [2025-02-07 23:53:07,357 INFO L226 Difference]: Without dead ends: 3611 [2025-02-07 23:53:07,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:07,360 INFO L435 NwaCegarLoop]: 1846 mSDtfsCounter, 2522 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:07,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2522 Valid, 3684 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 23:53:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2025-02-07 23:53:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2025-02-07 23:53:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 1.4930747922437673) internal successors, (5390), 3610 states have internal predecessors, (5390), 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) [2025-02-07 23:53:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5390 transitions. [2025-02-07 23:53:07,387 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5390 transitions. Word has length 989 [2025-02-07 23:53:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:07,387 INFO L471 AbstractCegarLoop]: Abstraction has 3611 states and 5390 transitions. [2025-02-07 23:53:07,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 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) [2025-02-07 23:53:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5390 transitions. [2025-02-07 23:53:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2025-02-07 23:53:07,394 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:07,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:07,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-07 23:53:07,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:07,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 32730504, now seen corresponding path program 1 times [2025-02-07 23:53:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531269657] [2025-02-07 23:53:07,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:07,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 990 statements into 1 equivalence classes. [2025-02-07 23:53:08,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 990 of 990 statements. [2025-02-07 23:53:08,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:08,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:08,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:08,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531269657] [2025-02-07 23:53:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531269657] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:53:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658058028] [2025-02-07 23:53:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:08,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:53:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:08,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:53:08,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:08,998 INFO L87 Difference]: Start difference. First operand 3611 states and 5390 transitions. Second operand has 4 states, 4 states have (on average 247.5) internal successors, (990), 4 states have internal predecessors, (990), 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) [2025-02-07 23:53:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:10,180 INFO L93 Difference]: Finished difference Result 7121 states and 10629 transitions. [2025-02-07 23:53:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:53:10,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.5) internal successors, (990), 4 states have internal predecessors, (990), 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 990 [2025-02-07 23:53:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:10,185 INFO L225 Difference]: With dead ends: 7121 [2025-02-07 23:53:10,185 INFO L226 Difference]: Without dead ends: 3611 [2025-02-07 23:53:10,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:10,189 INFO L435 NwaCegarLoop]: 1846 mSDtfsCounter, 2533 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:10,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 3684 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 23:53:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2025-02-07 23:53:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2025-02-07 23:53:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 1.4925207756232688) internal successors, (5388), 3610 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 23:53:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5388 transitions. [2025-02-07 23:53:10,224 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5388 transitions. Word has length 990 [2025-02-07 23:53:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:10,225 INFO L471 AbstractCegarLoop]: Abstraction has 3611 states and 5388 transitions. [2025-02-07 23:53:10,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.5) internal successors, (990), 4 states have internal predecessors, (990), 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) [2025-02-07 23:53:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5388 transitions. [2025-02-07 23:53:10,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2025-02-07 23:53:10,233 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:10,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:10,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-07 23:53:10,233 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:10,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1945012441, now seen corresponding path program 1 times [2025-02-07 23:53:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363466987] [2025-02-07 23:53:10,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:10,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 991 statements into 1 equivalence classes. [2025-02-07 23:53:11,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 991 of 991 statements. [2025-02-07 23:53:11,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:11,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:12,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363466987] [2025-02-07 23:53:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363466987] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:12,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:12,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 23:53:12,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872470597] [2025-02-07 23:53:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:12,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 23:53:12,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:12,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 23:53:12,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:12,117 INFO L87 Difference]: Start difference. First operand 3611 states and 5388 transitions. Second operand has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 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) [2025-02-07 23:53:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:14,156 INFO L93 Difference]: Finished difference Result 9866 states and 14695 transitions. [2025-02-07 23:53:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 23:53:14,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 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 991 [2025-02-07 23:53:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:14,163 INFO L225 Difference]: With dead ends: 9866 [2025-02-07 23:53:14,163 INFO L226 Difference]: Without dead ends: 6356 [2025-02-07 23:53:14,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:14,167 INFO L435 NwaCegarLoop]: 2530 mSDtfsCounter, 2075 mSDsluCounter, 7662 mSDsCounter, 0 mSdLazyCounter, 3825 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 10192 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:14,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 10192 Invalid, 3870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-07 23:53:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2025-02-07 23:53:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 4262. [2025-02-07 23:53:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 1.4879136352968787) internal successors, (6340), 4261 states have internal predecessors, (6340), 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) [2025-02-07 23:53:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 6340 transitions. [2025-02-07 23:53:14,204 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 6340 transitions. Word has length 991 [2025-02-07 23:53:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:14,204 INFO L471 AbstractCegarLoop]: Abstraction has 4262 states and 6340 transitions. [2025-02-07 23:53:14,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 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) [2025-02-07 23:53:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 6340 transitions. [2025-02-07 23:53:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2025-02-07 23:53:14,212 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:14,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:14,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-07 23:53:14,212 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:14,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:14,213 INFO L85 PathProgramCache]: Analyzing trace with hash -348613651, now seen corresponding path program 1 times [2025-02-07 23:53:14,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:14,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005589498] [2025-02-07 23:53:14,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:14,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 991 statements into 1 equivalence classes. [2025-02-07 23:53:15,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 991 of 991 statements. [2025-02-07 23:53:15,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:15,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:15,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005589498] [2025-02-07 23:53:15,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005589498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:15,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:15,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:53:15,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722245019] [2025-02-07 23:53:15,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:15,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:53:15,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:15,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:53:15,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:15,920 INFO L87 Difference]: Start difference. First operand 4262 states and 6340 transitions. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 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) [2025-02-07 23:53:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:16,914 INFO L93 Difference]: Finished difference Result 8423 states and 12529 transitions. [2025-02-07 23:53:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:53:16,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 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 991 [2025-02-07 23:53:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:16,917 INFO L225 Difference]: With dead ends: 8423 [2025-02-07 23:53:16,917 INFO L226 Difference]: Without dead ends: 4262 [2025-02-07 23:53:16,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:16,921 INFO L435 NwaCegarLoop]: 1846 mSDtfsCounter, 2482 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:16,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 3684 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-07 23:53:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2025-02-07 23:53:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 4262. [2025-02-07 23:53:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 1.4874442619103496) internal successors, (6338), 4261 states have internal predecessors, (6338), 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) [2025-02-07 23:53:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 6338 transitions. [2025-02-07 23:53:16,969 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 6338 transitions. Word has length 991 [2025-02-07 23:53:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:16,969 INFO L471 AbstractCegarLoop]: Abstraction has 4262 states and 6338 transitions. [2025-02-07 23:53:16,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 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) [2025-02-07 23:53:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 6338 transitions. [2025-02-07 23:53:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2025-02-07 23:53:16,977 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:16,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:16,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-07 23:53:16,978 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:16,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1975954725, now seen corresponding path program 1 times [2025-02-07 23:53:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209215025] [2025-02-07 23:53:16,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:17,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 992 statements into 1 equivalence classes. [2025-02-07 23:53:17,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 992 of 992 statements. [2025-02-07 23:53:17,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:17,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:18,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:18,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209215025] [2025-02-07 23:53:18,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209215025] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:18,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 23:53:18,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951541033] [2025-02-07 23:53:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:18,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 23:53:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:18,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 23:53:18,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:18,422 INFO L87 Difference]: Start difference. First operand 4262 states and 6338 transitions. Second operand has 6 states, 6 states have (on average 165.33333333333334) internal successors, (992), 6 states have internal predecessors, (992), 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) [2025-02-07 23:53:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:20,600 INFO L93 Difference]: Finished difference Result 10049 states and 14950 transitions. [2025-02-07 23:53:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 23:53:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 165.33333333333334) internal successors, (992), 6 states have internal predecessors, (992), 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 992 [2025-02-07 23:53:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:20,606 INFO L225 Difference]: With dead ends: 10049 [2025-02-07 23:53:20,606 INFO L226 Difference]: Without dead ends: 5888 [2025-02-07 23:53:20,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:20,611 INFO L435 NwaCegarLoop]: 2674 mSDtfsCounter, 4468 mSDsluCounter, 5491 mSDsCounter, 0 mSdLazyCounter, 4433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 8165 SdHoareTripleChecker+Invalid, 4434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:20,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4468 Valid, 8165 Invalid, 4434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4433 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-07 23:53:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2025-02-07 23:53:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 4081. [2025-02-07 23:53:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.4887254901960785) internal successors, (6074), 4080 states have internal predecessors, (6074), 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) [2025-02-07 23:53:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6074 transitions. [2025-02-07 23:53:20,658 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6074 transitions. Word has length 992 [2025-02-07 23:53:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:20,659 INFO L471 AbstractCegarLoop]: Abstraction has 4081 states and 6074 transitions. [2025-02-07 23:53:20,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.33333333333334) internal successors, (992), 6 states have internal predecessors, (992), 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) [2025-02-07 23:53:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6074 transitions. [2025-02-07 23:53:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2025-02-07 23:53:20,668 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:20,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-07 23:53:20,668 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1349489441, now seen corresponding path program 1 times [2025-02-07 23:53:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290127435] [2025-02-07 23:53:20,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:20,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 993 statements into 1 equivalence classes. [2025-02-07 23:53:21,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 993 of 993 statements. [2025-02-07 23:53:21,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:21,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 23:53:22,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:22,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290127435] [2025-02-07 23:53:22,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290127435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:22,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:22,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 23:53:22,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594567884] [2025-02-07 23:53:22,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:22,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:53:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:22,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:53:22,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:53:22,420 INFO L87 Difference]: Start difference. First operand 4081 states and 6074 transitions. Second operand has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 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) [2025-02-07 23:53:23,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:23,648 INFO L93 Difference]: Finished difference Result 8061 states and 11997 transitions. [2025-02-07 23:53:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 23:53:23,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 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 993 [2025-02-07 23:53:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:23,652 INFO L225 Difference]: With dead ends: 8061 [2025-02-07 23:53:23,652 INFO L226 Difference]: Without dead ends: 4081 [2025-02-07 23:53:23,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:23,656 INFO L435 NwaCegarLoop]: 1844 mSDtfsCounter, 2762 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:23,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2762 Valid, 4888 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-07 23:53:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2025-02-07 23:53:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 4081. [2025-02-07 23:53:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.486764705882353) internal successors, (6066), 4080 states have internal predecessors, (6066), 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) [2025-02-07 23:53:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6066 transitions. [2025-02-07 23:53:23,685 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6066 transitions. Word has length 993 [2025-02-07 23:53:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:23,686 INFO L471 AbstractCegarLoop]: Abstraction has 4081 states and 6066 transitions. [2025-02-07 23:53:23,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 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) [2025-02-07 23:53:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6066 transitions. [2025-02-07 23:53:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2025-02-07 23:53:23,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:23,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:23,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-07 23:53:23,694 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:23,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -567139820, now seen corresponding path program 1 times [2025-02-07 23:53:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641543953] [2025-02-07 23:53:23,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:23,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 994 statements into 1 equivalence classes. [2025-02-07 23:53:24,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 994 of 994 statements. [2025-02-07 23:53:24,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:24,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641543953] [2025-02-07 23:53:25,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641543953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:25,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:25,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 23:53:25,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197439124] [2025-02-07 23:53:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:25,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 23:53:25,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:25,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 23:53:25,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:25,224 INFO L87 Difference]: Start difference. First operand 4081 states and 6066 transitions. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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) [2025-02-07 23:53:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:27,181 INFO L93 Difference]: Finished difference Result 10793 states and 16019 transitions. [2025-02-07 23:53:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 23:53:27,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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 994 [2025-02-07 23:53:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:27,189 INFO L225 Difference]: With dead ends: 10793 [2025-02-07 23:53:27,189 INFO L226 Difference]: Without dead ends: 6813 [2025-02-07 23:53:27,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:27,197 INFO L435 NwaCegarLoop]: 3172 mSDtfsCounter, 1595 mSDsluCounter, 8337 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 11509 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:27,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 11509 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-07 23:53:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2025-02-07 23:53:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 5065. [2025-02-07 23:53:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5065 states, 5064 states have (on average 1.481042654028436) internal successors, (7500), 5064 states have internal predecessors, (7500), 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) [2025-02-07 23:53:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 7500 transitions. [2025-02-07 23:53:27,268 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 7500 transitions. Word has length 994 [2025-02-07 23:53:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:27,268 INFO L471 AbstractCegarLoop]: Abstraction has 5065 states and 7500 transitions. [2025-02-07 23:53:27,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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) [2025-02-07 23:53:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 7500 transitions. [2025-02-07 23:53:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2025-02-07 23:53:27,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:27,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:27,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-07 23:53:27,277 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:27,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash -89487406, now seen corresponding path program 1 times [2025-02-07 23:53:27,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885908999] [2025-02-07 23:53:27,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:27,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 995 statements into 1 equivalence classes. [2025-02-07 23:53:28,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 995 of 995 statements. [2025-02-07 23:53:28,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:28,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885908999] [2025-02-07 23:53:29,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885908999] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:29,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:29,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 23:53:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89431003] [2025-02-07 23:53:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:29,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:53:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:29,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:53:29,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:53:29,122 INFO L87 Difference]: Start difference. First operand 5065 states and 7500 transitions. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2025-02-07 23:53:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:30,567 INFO L93 Difference]: Finished difference Result 10033 states and 14855 transitions. [2025-02-07 23:53:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 23:53:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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 995 [2025-02-07 23:53:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:30,571 INFO L225 Difference]: With dead ends: 10033 [2025-02-07 23:53:30,571 INFO L226 Difference]: Without dead ends: 5069 [2025-02-07 23:53:30,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:53:30,575 INFO L435 NwaCegarLoop]: 1845 mSDtfsCounter, 2693 mSDsluCounter, 3682 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:30,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 5527 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-07 23:53:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2025-02-07 23:53:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 5067. [2025-02-07 23:53:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 5066 states have (on average 1.4808527437820767) internal successors, (7502), 5066 states have internal predecessors, (7502), 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) [2025-02-07 23:53:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 7502 transitions. [2025-02-07 23:53:30,608 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 7502 transitions. Word has length 995 [2025-02-07 23:53:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:30,608 INFO L471 AbstractCegarLoop]: Abstraction has 5067 states and 7502 transitions. [2025-02-07 23:53:30,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2025-02-07 23:53:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 7502 transitions. [2025-02-07 23:53:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2025-02-07 23:53:30,616 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:30,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:30,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-07 23:53:30,617 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:30,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1852292729, now seen corresponding path program 1 times [2025-02-07 23:53:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:30,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547026710] [2025-02-07 23:53:30,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:30,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 996 statements into 1 equivalence classes. [2025-02-07 23:53:30,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 996 of 996 statements. [2025-02-07 23:53:30,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:30,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547026710] [2025-02-07 23:53:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547026710] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:53:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873837979] [2025-02-07 23:53:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:31,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:53:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:31,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:53:31,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:53:31,722 INFO L87 Difference]: Start difference. First operand 5067 states and 7502 transitions. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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) [2025-02-07 23:53:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:32,415 INFO L93 Difference]: Finished difference Result 10035 states and 14856 transitions. [2025-02-07 23:53:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:53:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 996 [2025-02-07 23:53:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:32,420 INFO L225 Difference]: With dead ends: 10035 [2025-02-07 23:53:32,420 INFO L226 Difference]: Without dead ends: 5069 [2025-02-07 23:53:32,423 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 [2025-02-07 23:53:32,423 INFO L435 NwaCegarLoop]: 2327 mSDtfsCounter, 0 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6968 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:32,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6968 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 23:53:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2025-02-07 23:53:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 5069. [2025-02-07 23:53:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 1.4806629834254144) internal successors, (7504), 5068 states have internal predecessors, (7504), 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) [2025-02-07 23:53:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 7504 transitions. [2025-02-07 23:53:32,484 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 7504 transitions. Word has length 996 [2025-02-07 23:53:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:32,485 INFO L471 AbstractCegarLoop]: Abstraction has 5069 states and 7504 transitions. [2025-02-07 23:53:32,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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) [2025-02-07 23:53:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 7504 transitions. [2025-02-07 23:53:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2025-02-07 23:53:32,496 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:32,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:32,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-07 23:53:32,497 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:32,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1000120716, now seen corresponding path program 1 times [2025-02-07 23:53:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690944284] [2025-02-07 23:53:32,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:32,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 996 statements into 1 equivalence classes. [2025-02-07 23:53:33,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 996 of 996 statements. [2025-02-07 23:53:33,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:33,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:34,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:34,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690944284] [2025-02-07 23:53:34,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690944284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:34,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:34,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 23:53:34,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402327434] [2025-02-07 23:53:34,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:34,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 23:53:34,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:34,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 23:53:34,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:34,140 INFO L87 Difference]: Start difference. First operand 5069 states and 7504 transitions. Second operand has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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) [2025-02-07 23:53:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:36,224 INFO L93 Difference]: Finished difference Result 13429 states and 19846 transitions. [2025-02-07 23:53:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 23:53:36,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 996 [2025-02-07 23:53:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:36,232 INFO L225 Difference]: With dead ends: 13429 [2025-02-07 23:53:36,232 INFO L226 Difference]: Without dead ends: 8461 [2025-02-07 23:53:36,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:36,244 INFO L435 NwaCegarLoop]: 1839 mSDtfsCounter, 4294 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 3826 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 7345 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:36,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4294 Valid, 7345 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3826 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-07 23:53:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8461 states. [2025-02-07 23:53:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8461 to 6813. [2025-02-07 23:53:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6812 states have (on average 1.4729888432178508) internal successors, (10034), 6812 states have internal predecessors, (10034), 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) [2025-02-07 23:53:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 10034 transitions. [2025-02-07 23:53:36,312 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 10034 transitions. Word has length 996 [2025-02-07 23:53:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:36,313 INFO L471 AbstractCegarLoop]: Abstraction has 6813 states and 10034 transitions. [2025-02-07 23:53:36,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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) [2025-02-07 23:53:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 10034 transitions. [2025-02-07 23:53:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2025-02-07 23:53:36,322 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:36,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:36,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-07 23:53:36,323 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:36,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash 908352599, now seen corresponding path program 1 times [2025-02-07 23:53:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658915123] [2025-02-07 23:53:36,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:36,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 997 statements into 1 equivalence classes. [2025-02-07 23:53:37,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 997 of 997 statements. [2025-02-07 23:53:37,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:37,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:53:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:53:38,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:53:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658915123] [2025-02-07 23:53:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658915123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:53:38,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:53:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 23:53:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128190908] [2025-02-07 23:53:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:53:38,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 23:53:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:53:38,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 23:53:38,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:38,132 INFO L87 Difference]: Start difference. First operand 6813 states and 10034 transitions. Second operand has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 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) [2025-02-07 23:53:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:53:40,067 INFO L93 Difference]: Finished difference Result 18741 states and 27556 transitions. [2025-02-07 23:53:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 23:53:40,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 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 997 [2025-02-07 23:53:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:53:40,077 INFO L225 Difference]: With dead ends: 18741 [2025-02-07 23:53:40,077 INFO L226 Difference]: Without dead ends: 12029 [2025-02-07 23:53:40,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:53:40,085 INFO L435 NwaCegarLoop]: 1839 mSDtfsCounter, 5834 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5834 SdHoareTripleChecker+Valid, 6545 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:53:40,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5834 Valid, 6545 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-07 23:53:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12029 states. [2025-02-07 23:53:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12029 to 10373. [2025-02-07 23:53:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10373 states, 10372 states have (on average 1.465676822213652) internal successors, (15202), 10372 states have internal predecessors, (15202), 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) [2025-02-07 23:53:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10373 states to 10373 states and 15202 transitions. [2025-02-07 23:53:40,177 INFO L78 Accepts]: Start accepts. Automaton has 10373 states and 15202 transitions. Word has length 997 [2025-02-07 23:53:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:53:40,178 INFO L471 AbstractCegarLoop]: Abstraction has 10373 states and 15202 transitions. [2025-02-07 23:53:40,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 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) [2025-02-07 23:53:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10373 states and 15202 transitions. [2025-02-07 23:53:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2025-02-07 23:53:40,189 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:53:40,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 23:53:40,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-07 23:53:40,190 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:53:40,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:53:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2141531446, now seen corresponding path program 1 times [2025-02-07 23:53:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:53:40,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285352463] [2025-02-07 23:53:40,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:53:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:53:40,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 998 statements into 1 equivalence classes. [2025-02-07 23:53:40,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 998 of 998 statements. [2025-02-07 23:53:40,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:53:40,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat