./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem16_label28.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b327f04e85816300a772fdcab90c62f95ac5a620d1563dfbe08b64473c277d33 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:47:10,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:47:10,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:47:10,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:47:10,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:47:10,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:47:10,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:47:10,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:47:10,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:47:10,662 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:47:10,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:47:10,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:47:10,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:47:10,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:47:10,664 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:47:10,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:47:10,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:47:10,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:47:10,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:47:10,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:47:10,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:47:10,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:47:10,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:47:10,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:47:10,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:47:10,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:47:10,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:47:10,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:47:10,668 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:47:10,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:47:10,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:47:10,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:47:10,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:47:10,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:47:10,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:47:10,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:47:10,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:47:10,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:47:10,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:47:10,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:47:10,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:47:10,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:47:10,672 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b327f04e85816300a772fdcab90c62f95ac5a620d1563dfbe08b64473c277d33 [2024-11-09 19:47:10,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:47:10,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:47:10,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:47:10,951 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:47:10,952 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:47:10,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label28.c [2024-11-09 19:47:12,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:47:12,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:47:12,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label28.c [2024-11-09 19:47:12,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b6f3b97a/5402d80d5f634099b615999074f2d895/FLAG915681556 [2024-11-09 19:47:12,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b6f3b97a/5402d80d5f634099b615999074f2d895 [2024-11-09 19:47:12,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:47:12,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:47:12,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:47:12,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:47:12,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:47:12,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:47:12" (1/1) ... [2024-11-09 19:47:12,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1612d7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:12, skipping insertion in model container [2024-11-09 19:47:12,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:47:12" (1/1) ... [2024-11-09 19:47:13,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:47:13,257 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label28.c[6890,6903] [2024-11-09 19:47:13,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:47:13,608 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:47:13,642 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label28.c[6890,6903] [2024-11-09 19:47:13,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:47:13,859 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:47:13,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13 WrapperNode [2024-11-09 19:47:13,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:47:13,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:47:13,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:47:13,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:47:13,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:13,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,039 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2024-11-09 19:47:14,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:47:14,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:47:14,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:47:14,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:47:14,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,064 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,130 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]. [2024-11-09 19:47:14,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,178 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:47:14,232 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:47:14,234 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:47:14,234 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:47:14,236 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (1/1) ... [2024-11-09 19:47:14,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:47:14,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:47:14,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:47:14,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:47:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:47:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:47:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:47:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:47:14,385 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:47:14,388 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:47:16,764 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2024-11-09 19:47:16,883 INFO L? ?]: Removed 757 outVars from TransFormulas that were not future-live. [2024-11-09 19:47:16,883 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:47:16,914 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:47:16,915 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:47:16,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:47:16 BoogieIcfgContainer [2024-11-09 19:47:16,915 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:47:16,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:47:16,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:47:16,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:47:16,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:47:12" (1/3) ... [2024-11-09 19:47:16,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea5961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:47:16, skipping insertion in model container [2024-11-09 19:47:16,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:47:13" (2/3) ... [2024-11-09 19:47:16,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea5961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:47:16, skipping insertion in model container [2024-11-09 19:47:16,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:47:16" (3/3) ... [2024-11-09 19:47:16,926 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label28.c [2024-11-09 19:47:16,941 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:47:16,941 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:47:17,007 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:47:17,012 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;@6ce48ed1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:47:17,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:47:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 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) [2024-11-09 19:47:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 19:47:17,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:17,026 INFO L215 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] [2024-11-09 19:47:17,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:17,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1965603486, now seen corresponding path program 1 times [2024-11-09 19:47:17,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:17,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024302321] [2024-11-09 19:47:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:47:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024302321] [2024-11-09 19:47:17,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024302321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:17,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:17,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:47:17,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338855438] [2024-11-09 19:47:17,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:17,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:17,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:17,436 INFO L87 Difference]: Start difference. First operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 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) Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:19,527 INFO L93 Difference]: Finished difference Result 1128 states and 2895 transitions. [2024-11-09 19:47:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:19,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-09 19:47:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:19,545 INFO L225 Difference]: With dead ends: 1128 [2024-11-09 19:47:19,545 INFO L226 Difference]: Without dead ends: 665 [2024-11-09 19:47:19,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:19,554 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 583 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:19,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 258 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:47:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-09 19:47:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2024-11-09 19:47:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 2.305722891566265) internal successors, (1531), 664 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1531 transitions. [2024-11-09 19:47:19,627 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1531 transitions. Word has length 68 [2024-11-09 19:47:19,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:19,628 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1531 transitions. [2024-11-09 19:47:19,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1531 transitions. [2024-11-09 19:47:19,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-09 19:47:19,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:19,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:19,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:47:19,633 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:19,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1815047140, now seen corresponding path program 1 times [2024-11-09 19:47:19,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:19,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366577468] [2024-11-09 19:47:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:47:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:19,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366577468] [2024-11-09 19:47:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366577468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:19,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:19,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:47:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666714853] [2024-11-09 19:47:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:19,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:19,954 INFO L87 Difference]: Start difference. First operand 665 states and 1531 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:21,653 INFO L93 Difference]: Finished difference Result 1988 states and 4587 transitions. [2024-11-09 19:47:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:21,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2024-11-09 19:47:21,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:21,660 INFO L225 Difference]: With dead ends: 1988 [2024-11-09 19:47:21,660 INFO L226 Difference]: Without dead ends: 1325 [2024-11-09 19:47:21,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:21,664 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 643 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:21,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 158 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:47:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2024-11-09 19:47:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1325. [2024-11-09 19:47:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 2.1646525679758306) internal successors, (2866), 1324 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2866 transitions. [2024-11-09 19:47:21,702 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2866 transitions. Word has length 137 [2024-11-09 19:47:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:21,702 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 2866 transitions. [2024-11-09 19:47:21,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2866 transitions. [2024-11-09 19:47:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-09 19:47:21,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:21,708 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:21,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:47:21,708 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:21,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 922120336, now seen corresponding path program 1 times [2024-11-09 19:47:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438609844] [2024-11-09 19:47:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:47:22,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:22,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438609844] [2024-11-09 19:47:22,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438609844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:22,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:22,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:47:22,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713462832] [2024-11-09 19:47:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:22,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:22,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:22,008 INFO L87 Difference]: Start difference. First operand 1325 states and 2866 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:24,041 INFO L93 Difference]: Finished difference Result 3971 states and 8594 transitions. [2024-11-09 19:47:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-11-09 19:47:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:24,054 INFO L225 Difference]: With dead ends: 3971 [2024-11-09 19:47:24,055 INFO L226 Difference]: Without dead ends: 2648 [2024-11-09 19:47:24,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:24,060 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 517 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:24,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 82 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:47:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-11-09 19:47:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2645. [2024-11-09 19:47:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 2.1164901664145233) internal successors, (5596), 2644 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 5596 transitions. [2024-11-09 19:47:24,115 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 5596 transitions. Word has length 165 [2024-11-09 19:47:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:24,116 INFO L471 AbstractCegarLoop]: Abstraction has 2645 states and 5596 transitions. [2024-11-09 19:47:24,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 5596 transitions. [2024-11-09 19:47:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-09 19:47:24,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:24,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:24,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:47:24,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:24,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash -342790912, now seen corresponding path program 1 times [2024-11-09 19:47:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004347927] [2024-11-09 19:47:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:47:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:24,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004347927] [2024-11-09 19:47:24,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004347927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:24,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:24,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:47:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446028994] [2024-11-09 19:47:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:24,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:24,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:24,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:24,313 INFO L87 Difference]: Start difference. First operand 2645 states and 5596 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:25,912 INFO L93 Difference]: Finished difference Result 6608 states and 13812 transitions. [2024-11-09 19:47:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2024-11-09 19:47:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:25,930 INFO L225 Difference]: With dead ends: 6608 [2024-11-09 19:47:25,931 INFO L226 Difference]: Without dead ends: 3965 [2024-11-09 19:47:25,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:25,936 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 541 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:25,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 86 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:47:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2024-11-09 19:47:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3965. [2024-11-09 19:47:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3964 states have (on average 2.0095862764883954) internal successors, (7966), 3964 states have internal predecessors, (7966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 7966 transitions. [2024-11-09 19:47:26,034 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 7966 transitions. Word has length 200 [2024-11-09 19:47:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:26,035 INFO L471 AbstractCegarLoop]: Abstraction has 3965 states and 7966 transitions. [2024-11-09 19:47:26,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 7966 transitions. [2024-11-09 19:47:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-09 19:47:26,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:26,040 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:26,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:47:26,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:26,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 600126664, now seen corresponding path program 1 times [2024-11-09 19:47:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949172626] [2024-11-09 19:47:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:26,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:47:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949172626] [2024-11-09 19:47:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949172626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:26,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:26,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594476887] [2024-11-09 19:47:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:26,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:26,343 INFO L87 Difference]: Start difference. First operand 3965 states and 7966 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:28,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:28,152 INFO L93 Difference]: Finished difference Result 9578 states and 19465 transitions. [2024-11-09 19:47:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:28,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2024-11-09 19:47:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:28,177 INFO L225 Difference]: With dead ends: 9578 [2024-11-09 19:47:28,178 INFO L226 Difference]: Without dead ends: 5615 [2024-11-09 19:47:28,184 INFO L431 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 [2024-11-09 19:47:28,185 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 528 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:28,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 862 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:47:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2024-11-09 19:47:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5615. [2024-11-09 19:47:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 1.9729248307801923) internal successors, (11076), 5614 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 11076 transitions. [2024-11-09 19:47:28,291 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 11076 transitions. Word has length 304 [2024-11-09 19:47:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:28,293 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 11076 transitions. [2024-11-09 19:47:28,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 11076 transitions. [2024-11-09 19:47:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-09 19:47:28,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:28,297 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:47:28,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:28,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1879810282, now seen corresponding path program 1 times [2024-11-09 19:47:28,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:28,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586873592] [2024-11-09 19:47:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:28,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:47:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586873592] [2024-11-09 19:47:28,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586873592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:28,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:28,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938811544] [2024-11-09 19:47:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:28,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:47:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:28,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:47:28,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:47:28,910 INFO L87 Difference]: Start difference. First operand 5615 states and 11076 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:30,814 INFO L93 Difference]: Finished difference Result 11558 states and 22754 transitions. [2024-11-09 19:47:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:47:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2024-11-09 19:47:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:30,836 INFO L225 Difference]: With dead ends: 11558 [2024-11-09 19:47:30,836 INFO L226 Difference]: Without dead ends: 5945 [2024-11-09 19:47:30,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:47:30,843 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 389 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:30,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 328 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:47:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2024-11-09 19:47:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5945. [2024-11-09 19:47:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.9639973082099595) internal successors, (11674), 5944 states have internal predecessors, (11674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 11674 transitions. [2024-11-09 19:47:30,962 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 11674 transitions. Word has length 314 [2024-11-09 19:47:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:30,962 INFO L471 AbstractCegarLoop]: Abstraction has 5945 states and 11674 transitions. [2024-11-09 19:47:30,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 11674 transitions. [2024-11-09 19:47:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-09 19:47:30,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:30,969 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:30,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:47:30,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:30,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -576113712, now seen corresponding path program 1 times [2024-11-09 19:47:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:30,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255264881] [2024-11-09 19:47:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 19:47:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255264881] [2024-11-09 19:47:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255264881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:31,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:31,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:47:31,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498344009] [2024-11-09 19:47:31,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:31,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:47:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:47:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:47:31,657 INFO L87 Difference]: Start difference. First operand 5945 states and 11674 transitions. Second operand has 7 states, 7 states have (on average 56.857142857142854) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:33,835 INFO L93 Difference]: Finished difference Result 11421 states and 22337 transitions. [2024-11-09 19:47:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:47:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.857142857142854) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 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 402 [2024-11-09 19:47:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:33,852 INFO L225 Difference]: With dead ends: 11421 [2024-11-09 19:47:33,852 INFO L226 Difference]: Without dead ends: 5615 [2024-11-09 19:47:33,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:47:33,858 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 572 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:33,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 299 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:47:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2024-11-09 19:47:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5615. [2024-11-09 19:47:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 1.8619522622016387) internal successors, (10453), 5614 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 10453 transitions. [2024-11-09 19:47:33,939 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 10453 transitions. Word has length 402 [2024-11-09 19:47:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:33,940 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 10453 transitions. [2024-11-09 19:47:33,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.857142857142854) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 10453 transitions. [2024-11-09 19:47:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-09 19:47:33,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:33,946 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:33,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:47:33,946 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:33,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2129198146, now seen corresponding path program 1 times [2024-11-09 19:47:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148047208] [2024-11-09 19:47:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-09 19:47:34,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:34,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148047208] [2024-11-09 19:47:34,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148047208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:47:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214355570] [2024-11-09 19:47:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:47:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:47:34,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:47:34,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:47:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:34,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:47:34,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:47:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-09 19:47:35,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:47:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214355570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:35,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:47:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:47:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992634433] [2024-11-09 19:47:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:35,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:47:35,119 INFO L87 Difference]: Start difference. First operand 5615 states and 10453 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:36,152 INFO L93 Difference]: Finished difference Result 7268 states and 13457 transitions. [2024-11-09 19:47:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:36,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 409 [2024-11-09 19:47:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:36,166 INFO L225 Difference]: With dead ends: 7268 [2024-11-09 19:47:36,167 INFO L226 Difference]: Without dead ends: 7265 [2024-11-09 19:47:36,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:47:36,170 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 370 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:36,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 87 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7265 states. [2024-11-09 19:47:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7265 to 6275. [2024-11-09 19:47:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6275 states, 6274 states have (on average 1.8584635001593879) internal successors, (11660), 6274 states have internal predecessors, (11660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6275 states to 6275 states and 11660 transitions. [2024-11-09 19:47:36,259 INFO L78 Accepts]: Start accepts. Automaton has 6275 states and 11660 transitions. Word has length 409 [2024-11-09 19:47:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:36,259 INFO L471 AbstractCegarLoop]: Abstraction has 6275 states and 11660 transitions. [2024-11-09 19:47:36,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6275 states and 11660 transitions. [2024-11-09 19:47:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2024-11-09 19:47:36,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:36,273 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:47:36,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:47:36,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:47:36,474 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:36,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1539852944, now seen corresponding path program 1 times [2024-11-09 19:47:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978567115] [2024-11-09 19:47:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:36,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 736 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-09 19:47:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978567115] [2024-11-09 19:47:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978567115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:37,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:37,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:37,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472898358] [2024-11-09 19:47:37,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:37,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:37,105 INFO L87 Difference]: Start difference. First operand 6275 states and 11660 transitions. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:38,342 INFO L93 Difference]: Finished difference Result 14528 states and 27120 transitions. [2024-11-09 19:47:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:38,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 647 [2024-11-09 19:47:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:38,363 INFO L225 Difference]: With dead ends: 14528 [2024-11-09 19:47:38,364 INFO L226 Difference]: Without dead ends: 8585 [2024-11-09 19:47:38,371 INFO L431 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 [2024-11-09 19:47:38,373 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 487 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:38,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 41 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:47:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2024-11-09 19:47:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8585. [2024-11-09 19:47:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8585 states, 8584 states have (on average 1.8631174277726001) internal successors, (15993), 8584 states have internal predecessors, (15993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8585 states to 8585 states and 15993 transitions. [2024-11-09 19:47:38,590 INFO L78 Accepts]: Start accepts. Automaton has 8585 states and 15993 transitions. Word has length 647 [2024-11-09 19:47:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:38,591 INFO L471 AbstractCegarLoop]: Abstraction has 8585 states and 15993 transitions. [2024-11-09 19:47:38,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 8585 states and 15993 transitions. [2024-11-09 19:47:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2024-11-09 19:47:38,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:38,601 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:47:38,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:47:38,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:38,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash 389617922, now seen corresponding path program 1 times [2024-11-09 19:47:38,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951271488] [2024-11-09 19:47:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2024-11-09 19:47:39,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951271488] [2024-11-09 19:47:39,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951271488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:39,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:39,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:39,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980159286] [2024-11-09 19:47:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:39,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:39,175 INFO L87 Difference]: Start difference. First operand 8585 states and 15993 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:40,401 INFO L93 Difference]: Finished difference Result 19478 states and 36389 transitions. [2024-11-09 19:47:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 736 [2024-11-09 19:47:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:40,425 INFO L225 Difference]: With dead ends: 19478 [2024-11-09 19:47:40,426 INFO L226 Difference]: Without dead ends: 11225 [2024-11-09 19:47:40,436 INFO L431 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 [2024-11-09 19:47:40,436 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 482 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:40,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 707 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:47:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11225 states. [2024-11-09 19:47:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11225 to 10235. [2024-11-09 19:47:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10235 states, 10234 states have (on average 1.8561657221027945) internal successors, (18996), 10234 states have internal predecessors, (18996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 18996 transitions. [2024-11-09 19:47:40,572 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 18996 transitions. Word has length 736 [2024-11-09 19:47:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:40,573 INFO L471 AbstractCegarLoop]: Abstraction has 10235 states and 18996 transitions. [2024-11-09 19:47:40,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 18996 transitions. [2024-11-09 19:47:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2024-11-09 19:47:40,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:40,583 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:47:40,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:47:40,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:40,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1093331990, now seen corresponding path program 1 times [2024-11-09 19:47:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381531940] [2024-11-09 19:47:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 195 proven. 484 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-09 19:47:41,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381531940] [2024-11-09 19:47:41,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381531940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:47:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923630479] [2024-11-09 19:47:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:41,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:47:41,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:47:41,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:47:41,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:47:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:41,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:47:41,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:47:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2024-11-09 19:47:42,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:47:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923630479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:42,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:47:42,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 19:47:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474298467] [2024-11-09 19:47:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:42,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:47:42,024 INFO L87 Difference]: Start difference. First operand 10235 states and 18996 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:43,240 INFO L93 Difference]: Finished difference Result 20138 states and 37396 transitions. [2024-11-09 19:47:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 737 [2024-11-09 19:47:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:43,258 INFO L225 Difference]: With dead ends: 20138 [2024-11-09 19:47:43,258 INFO L226 Difference]: Without dead ends: 10235 [2024-11-09 19:47:43,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:47:43,270 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 563 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:43,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 644 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:47:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2024-11-09 19:47:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 10235. [2024-11-09 19:47:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10235 states, 10234 states have (on average 1.8491303498143443) internal successors, (18924), 10234 states have internal predecessors, (18924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 18924 transitions. [2024-11-09 19:47:43,420 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 18924 transitions. Word has length 737 [2024-11-09 19:47:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:43,421 INFO L471 AbstractCegarLoop]: Abstraction has 10235 states and 18924 transitions. [2024-11-09 19:47:43,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 18924 transitions. [2024-11-09 19:47:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2024-11-09 19:47:43,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:43,440 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:47:43,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:47:43,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 19:47:43,641 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:43,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash -128759742, now seen corresponding path program 1 times [2024-11-09 19:47:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181889855] [2024-11-09 19:47:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2024-11-09 19:47:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181889855] [2024-11-09 19:47:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181889855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852813255] [2024-11-09 19:47:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:44,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:44,283 INFO L87 Difference]: Start difference. First operand 10235 states and 18924 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:45,395 INFO L93 Difference]: Finished difference Result 25088 states and 46488 transitions. [2024-11-09 19:47:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 909 [2024-11-09 19:47:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:45,417 INFO L225 Difference]: With dead ends: 25088 [2024-11-09 19:47:45,417 INFO L226 Difference]: Without dead ends: 13205 [2024-11-09 19:47:45,429 INFO L431 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 [2024-11-09 19:47:45,429 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 532 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:45,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 697 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2024-11-09 19:47:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 12875. [2024-11-09 19:47:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12874 states have (on average 1.840608979338201) internal successors, (23696), 12874 states have internal predecessors, (23696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 23696 transitions. [2024-11-09 19:47:45,579 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 23696 transitions. Word has length 909 [2024-11-09 19:47:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:45,580 INFO L471 AbstractCegarLoop]: Abstraction has 12875 states and 23696 transitions. [2024-11-09 19:47:45,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 23696 transitions. [2024-11-09 19:47:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2024-11-09 19:47:45,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:45,601 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:45,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:47:45,602 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:45,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1921701306, now seen corresponding path program 1 times [2024-11-09 19:47:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963690566] [2024-11-09 19:47:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 1812 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2024-11-09 19:47:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963690566] [2024-11-09 19:47:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963690566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:46,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:46,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:47:46,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130593275] [2024-11-09 19:47:46,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:46,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:47:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:47:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:47:46,903 INFO L87 Difference]: Start difference. First operand 12875 states and 23696 transitions. Second operand has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:49,263 INFO L93 Difference]: Finished difference Result 25419 states and 46797 transitions. [2024-11-09 19:47:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 19:47:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 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 1179 [2024-11-09 19:47:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:49,279 INFO L225 Difference]: With dead ends: 25419 [2024-11-09 19:47:49,279 INFO L226 Difference]: Without dead ends: 12876 [2024-11-09 19:47:49,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:47:49,289 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 531 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:49,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 891 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4389 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:47:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12876 states. [2024-11-09 19:47:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12876 to 12875. [2024-11-09 19:47:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12874 states have (on average 1.8389001087463104) internal successors, (23674), 12874 states have internal predecessors, (23674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 23674 transitions. [2024-11-09 19:47:49,492 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 23674 transitions. Word has length 1179 [2024-11-09 19:47:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:49,492 INFO L471 AbstractCegarLoop]: Abstraction has 12875 states and 23674 transitions. [2024-11-09 19:47:49,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 23674 transitions. [2024-11-09 19:47:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2024-11-09 19:47:49,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:49,514 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:49,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:47:49,514 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:49,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1254318086, now seen corresponding path program 1 times [2024-11-09 19:47:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342081689] [2024-11-09 19:47:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:49,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1626 proven. 0 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2024-11-09 19:47:50,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342081689] [2024-11-09 19:47:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342081689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:50,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:50,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:47:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901873847] [2024-11-09 19:47:50,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:50,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:47:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:50,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:47:50,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:47:50,734 INFO L87 Difference]: Start difference. First operand 12875 states and 23674 transitions. Second operand has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:52,248 INFO L93 Difference]: Finished difference Result 25427 states and 46761 transitions. [2024-11-09 19:47:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:47:52,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 1192 [2024-11-09 19:47:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:52,265 INFO L225 Difference]: With dead ends: 25427 [2024-11-09 19:47:52,265 INFO L226 Difference]: Without dead ends: 12884 [2024-11-09 19:47:52,273 INFO L431 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 [2024-11-09 19:47:52,274 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 479 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:52,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 714 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:47:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2024-11-09 19:47:52,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 12545. [2024-11-09 19:47:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 12544 states have (on average 1.8393654336734695) internal successors, (23073), 12544 states have internal predecessors, (23073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 23073 transitions. [2024-11-09 19:47:52,404 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 23073 transitions. Word has length 1192 [2024-11-09 19:47:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:52,405 INFO L471 AbstractCegarLoop]: Abstraction has 12545 states and 23073 transitions. [2024-11-09 19:47:52,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 23073 transitions. [2024-11-09 19:47:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2024-11-09 19:47:52,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:52,426 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:52,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:47:52,426 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:52,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1563730116, now seen corresponding path program 1 times [2024-11-09 19:47:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767720958] [2024-11-09 19:47:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2868 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2024-11-09 19:47:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767720958] [2024-11-09 19:47:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767720958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:53,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:53,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111531110] [2024-11-09 19:47:53,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:53,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:53,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:53,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:53,077 INFO L87 Difference]: Start difference. First operand 12545 states and 23073 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:54,175 INFO L93 Difference]: Finished difference Result 26738 states and 49187 transitions. [2024-11-09 19:47:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 1195 [2024-11-09 19:47:54,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:54,191 INFO L225 Difference]: With dead ends: 26738 [2024-11-09 19:47:54,192 INFO L226 Difference]: Without dead ends: 13865 [2024-11-09 19:47:54,199 INFO L431 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 [2024-11-09 19:47:54,200 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 499 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:54,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 681 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2024-11-09 19:47:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 11555. [2024-11-09 19:47:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11555 states, 11554 states have (on average 1.827159425307253) internal successors, (21111), 11554 states have internal predecessors, (21111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11555 states to 11555 states and 21111 transitions. [2024-11-09 19:47:54,327 INFO L78 Accepts]: Start accepts. Automaton has 11555 states and 21111 transitions. Word has length 1195 [2024-11-09 19:47:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:54,328 INFO L471 AbstractCegarLoop]: Abstraction has 11555 states and 21111 transitions. [2024-11-09 19:47:54,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 11555 states and 21111 transitions. [2024-11-09 19:47:54,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1228 [2024-11-09 19:47:54,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:54,348 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-09 19:47:54,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:47:54,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:54,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 764324302, now seen corresponding path program 1 times [2024-11-09 19:47:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148073425] [2024-11-09 19:47:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 2114 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-09 19:47:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148073425] [2024-11-09 19:47:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148073425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:55,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406502017] [2024-11-09 19:47:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:55,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:55,125 INFO L87 Difference]: Start difference. First operand 11555 states and 21111 transitions. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:56,202 INFO L93 Difference]: Finished difference Result 23108 states and 42219 transitions. [2024-11-09 19:47:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 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 1227 [2024-11-09 19:47:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:56,218 INFO L225 Difference]: With dead ends: 23108 [2024-11-09 19:47:56,219 INFO L226 Difference]: Without dead ends: 11555 [2024-11-09 19:47:56,227 INFO L431 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 [2024-11-09 19:47:56,228 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 455 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:56,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 687 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11555 states. [2024-11-09 19:47:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11555 to 11225. [2024-11-09 19:47:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11225 states, 11224 states have (on average 1.8184248039914468) internal successors, (20410), 11224 states have internal predecessors, (20410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11225 states to 11225 states and 20410 transitions. [2024-11-09 19:47:56,326 INFO L78 Accepts]: Start accepts. Automaton has 11225 states and 20410 transitions. Word has length 1227 [2024-11-09 19:47:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:56,327 INFO L471 AbstractCegarLoop]: Abstraction has 11225 states and 20410 transitions. [2024-11-09 19:47:56,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 11225 states and 20410 transitions. [2024-11-09 19:47:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2024-11-09 19:47:56,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:56,344 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-09 19:47:56,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:47:56,344 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:56,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash -286369064, now seen corresponding path program 1 times [2024-11-09 19:47:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:56,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257726983] [2024-11-09 19:47:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 1816 proven. 0 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2024-11-09 19:47:57,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:57,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257726983] [2024-11-09 19:47:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257726983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224639729] [2024-11-09 19:47:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:57,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:57,310 INFO L87 Difference]: Start difference. First operand 11225 states and 20410 transitions. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:58,509 INFO L93 Difference]: Finished difference Result 22778 states and 41419 transitions. [2024-11-09 19:47:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:58,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 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 1252 [2024-11-09 19:47:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:58,521 INFO L225 Difference]: With dead ends: 22778 [2024-11-09 19:47:58,521 INFO L226 Difference]: Without dead ends: 11885 [2024-11-09 19:47:58,526 INFO L431 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 [2024-11-09 19:47:58,527 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 486 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:58,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 699 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:47:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11885 states. [2024-11-09 19:47:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11885 to 11885. [2024-11-09 19:47:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11885 states, 11884 states have (on average 1.817485695052171) internal successors, (21599), 11884 states have internal predecessors, (21599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11885 states to 11885 states and 21599 transitions. [2024-11-09 19:47:58,624 INFO L78 Accepts]: Start accepts. Automaton has 11885 states and 21599 transitions. Word has length 1252 [2024-11-09 19:47:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:58,625 INFO L471 AbstractCegarLoop]: Abstraction has 11885 states and 21599 transitions. [2024-11-09 19:47:58,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 11885 states and 21599 transitions. [2024-11-09 19:47:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2024-11-09 19:47:58,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:58,638 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:58,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:47:58,638 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:58,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 118854846, now seen corresponding path program 1 times [2024-11-09 19:47:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267750538] [2024-11-09 19:47:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 2357 proven. 82 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-11-09 19:48:00,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:48:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267750538] [2024-11-09 19:48:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267750538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:48:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079763966] [2024-11-09 19:48:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:00,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:48:00,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:48:00,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:48:00,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:48:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:00,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 19:48:00,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:48:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 1616 proven. 201 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2024-11-09 19:48:03,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:48:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 1616 proven. 201 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2024-11-09 19:48:07,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079763966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:48:07,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:48:07,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 10 [2024-11-09 19:48:07,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712773088] [2024-11-09 19:48:07,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:48:07,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 19:48:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:48:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 19:48:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:48:07,021 INFO L87 Difference]: Start difference. First operand 11885 states and 21599 transitions. Second operand has 10 states, 10 states have (on average 188.7) internal successors, (1887), 10 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:48:12,585 INFO L93 Difference]: Finished difference Result 24099 states and 43794 transitions. [2024-11-09 19:48:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 19:48:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 188.7) internal successors, (1887), 10 states have internal predecessors, (1887), 0 states have call successors, (0), 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 1306 [2024-11-09 19:48:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:48:12,605 INFO L225 Difference]: With dead ends: 24099 [2024-11-09 19:48:12,606 INFO L226 Difference]: Without dead ends: 12546 [2024-11-09 19:48:12,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2625 GetRequests, 2614 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-09 19:48:12,615 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2692 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 11597 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 11708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 11597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:48:12,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 111 Invalid, 11708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 11597 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-09 19:48:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12546 states. [2024-11-09 19:48:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12546 to 12215. [2024-11-09 19:48:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 12214 states have (on average 1.8151301784837073) internal successors, (22170), 12214 states have internal predecessors, (22170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 22170 transitions. [2024-11-09 19:48:12,771 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 22170 transitions. Word has length 1306 [2024-11-09 19:48:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:48:12,771 INFO L471 AbstractCegarLoop]: Abstraction has 12215 states and 22170 transitions. [2024-11-09 19:48:12,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 188.7) internal successors, (1887), 10 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 22170 transitions. [2024-11-09 19:48:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1569 [2024-11-09 19:48:12,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:48:12,787 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:48:12,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:48:12,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 19:48:12,988 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:48:12,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:48:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1311669696, now seen corresponding path program 1 times [2024-11-09 19:48:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:48:12,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496848900] [2024-11-09 19:48:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:12,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:48:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4890 backedges. 2034 proven. 156 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2024-11-09 19:48:15,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:48:15,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496848900] [2024-11-09 19:48:15,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496848900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:48:15,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904278906] [2024-11-09 19:48:15,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:15,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:48:15,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:48:15,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:48:15,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:48:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:15,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:48:15,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:48:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4890 backedges. 2190 proven. 0 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2024-11-09 19:48:16,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:48:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904278906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:48:16,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:48:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:48:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708088588] [2024-11-09 19:48:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:48:16,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:48:16,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:48:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:48:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:48:16,271 INFO L87 Difference]: Start difference. First operand 12215 states and 22170 transitions. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:48:17,417 INFO L93 Difference]: Finished difference Result 26408 states and 47958 transitions. [2024-11-09 19:48:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:48:17,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 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 1568 [2024-11-09 19:48:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:48:17,432 INFO L225 Difference]: With dead ends: 26408 [2024-11-09 19:48:17,432 INFO L226 Difference]: Without dead ends: 14525 [2024-11-09 19:48:17,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1572 GetRequests, 1567 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:48:17,440 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 435 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:48:17,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 94 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:48:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14525 states. [2024-11-09 19:48:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14525 to 13205. [2024-11-09 19:48:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13205 states, 13204 states have (on average 1.8141472281126931) internal successors, (23954), 13204 states have internal predecessors, (23954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 23954 transitions. [2024-11-09 19:48:17,540 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 23954 transitions. Word has length 1568 [2024-11-09 19:48:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:48:17,541 INFO L471 AbstractCegarLoop]: Abstraction has 13205 states and 23954 transitions. [2024-11-09 19:48:17,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 23954 transitions. [2024-11-09 19:48:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1656 [2024-11-09 19:48:17,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:48:17,564 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:48:17,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 19:48:17,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:48:17,765 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:48:17,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:48:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash 207566171, now seen corresponding path program 1 times [2024-11-09 19:48:17,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:48:17,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142609461] [2024-11-09 19:48:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:17,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:48:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5135 backedges. 3319 proven. 670 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2024-11-09 19:48:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:48:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142609461] [2024-11-09 19:48:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142609461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:48:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70387688] [2024-11-09 19:48:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:20,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:48:20,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:48:20,679 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:48:20,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:48:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:21,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:48:21,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:48:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5135 backedges. 1816 proven. 0 refuted. 0 times theorem prover too weak. 3319 trivial. 0 not checked. [2024-11-09 19:48:21,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:48:21,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70387688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:48:21,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:48:21,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-09 19:48:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982718717] [2024-11-09 19:48:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:48:21,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:48:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:48:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:48:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:48:21,376 INFO L87 Difference]: Start difference. First operand 13205 states and 23954 transitions. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:48:22,440 INFO L93 Difference]: Finished difference Result 26078 states and 47312 transitions. [2024-11-09 19:48:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:48:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 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 1655 [2024-11-09 19:48:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:48:22,455 INFO L225 Difference]: With dead ends: 26078 [2024-11-09 19:48:22,455 INFO L226 Difference]: Without dead ends: 13205 [2024-11-09 19:48:22,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1660 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:48:22,463 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 381 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:48:22,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 681 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:48:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2024-11-09 19:48:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 13205. [2024-11-09 19:48:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13205 states, 13204 states have (on average 1.8117994547106937) internal successors, (23923), 13204 states have internal predecessors, (23923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 23923 transitions. [2024-11-09 19:48:22,566 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 23923 transitions. Word has length 1655 [2024-11-09 19:48:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:48:22,567 INFO L471 AbstractCegarLoop]: Abstraction has 13205 states and 23923 transitions. [2024-11-09 19:48:22,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:48:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 23923 transitions. [2024-11-09 19:48:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2069 [2024-11-09 19:48:22,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:48:22,649 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:48:22,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 19:48:22,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:48:22,850 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:48:22,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:48:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1967311413, now seen corresponding path program 1 times [2024-11-09 19:48:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:48:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249745824] [2024-11-09 19:48:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:48:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8152 backedges. 4596 proven. 1593 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2024-11-09 19:48:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:48:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249745824] [2024-11-09 19:48:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249745824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:48:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266865804] [2024-11-09 19:48:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:48:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:48:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:48:25,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:48:25,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:48:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:48:26,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 2371 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:48:26,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:48:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8152 backedges. 4573 proven. 0 refuted. 0 times theorem prover too weak. 3579 trivial. 0 not checked. [2024-11-09 19:48:26,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:48:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266865804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:48:26,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:48:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 19:48:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567213845] [2024-11-09 19:48:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:48:26,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:48:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:48:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:48:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:48:26,488 INFO L87 Difference]: Start difference. First operand 13205 states and 23923 transitions. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)