./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label47.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/Problem17_label47.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 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:54:31,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:54:31,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:54:31,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:54:31,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:54:31,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:54:31,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:54:31,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:54:31,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:54:31,650 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:54:31,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:54:31,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:54:31,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:54:31,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:54:31,652 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:54:31,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:54:31,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:54:31,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:54:31,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:54:31,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:54:31,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:54:31,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:54:31,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:54:31,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:54:31,657 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:54:31,657 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:54:31,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:54:31,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:54:31,658 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:54:31,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:54:31,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:54:31,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:54:31,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:54:31,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:54:31,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:54:31,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:54:31,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:54:31,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:54:31,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:54:31,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:54:31,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:54:31,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:54:31,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 [2024-11-09 19:54:31,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:54:31,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:54:31,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:54:31,969 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:54:31,969 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:54:31,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2024-11-09 19:54:33,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:54:33,730 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:54:33,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2024-11-09 19:54:33,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad446f3c2/c55e4520791c499a83c17db6070fd6aa/FLAG37da66ec1 [2024-11-09 19:54:33,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad446f3c2/c55e4520791c499a83c17db6070fd6aa [2024-11-09 19:54:33,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:54:33,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:54:33,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:54:33,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:54:33,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:54:33,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:54:33" (1/1) ... [2024-11-09 19:54:33,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23796728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:33, skipping insertion in model container [2024-11-09 19:54:33,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:54:33" (1/1) ... [2024-11-09 19:54:34,010 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:54:34,286 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/Problem17_label47.c[6608,6621] [2024-11-09 19:54:34,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:54:34,831 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:54:34,862 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/Problem17_label47.c[6608,6621] [2024-11-09 19:54:35,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:54:35,227 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:54:35,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35 WrapperNode [2024-11-09 19:54:35,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:54:35,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:54:35,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:54:35,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:54:35,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:35,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:35,571 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:54:35,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:54:35,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:54:35,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:54:35,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:54:35,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:35,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:35,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:35,890 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 19:54:35,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:35,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:36,061 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:36,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:36,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:36,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:36,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:54:36,202 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:54:36,202 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:54:36,202 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:54:36,203 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (1/1) ... [2024-11-09 19:54:36,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:54:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:54:36,245 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 19:54:36,251 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 19:54:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:54:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:54:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:54:36,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:54:36,370 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:54:36,372 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:54:40,285 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:54:40,540 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:54:40,542 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:54:40,580 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:54:40,582 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:54:40,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:54:40 BoogieIcfgContainer [2024-11-09 19:54:40,582 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:54:40,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:54:40,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:54:40,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:54:40,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:54:33" (1/3) ... [2024-11-09 19:54:40,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d691714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:54:40, skipping insertion in model container [2024-11-09 19:54:40,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:35" (2/3) ... [2024-11-09 19:54:40,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d691714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:54:40, skipping insertion in model container [2024-11-09 19:54:40,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:54:40" (3/3) ... [2024-11-09 19:54:40,594 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2024-11-09 19:54:40,610 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:54:40,610 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:54:40,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:54:40,707 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;@380bd8dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:54:40,708 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:54:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 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 19:54:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 19:54:40,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:40,726 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] [2024-11-09 19:54:40,727 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:40,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1110623329, now seen corresponding path program 1 times [2024-11-09 19:54:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327093151] [2024-11-09 19:54:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:41,103 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 19:54:41,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327093151] [2024-11-09 19:54:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327093151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:41,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156669544] [2024-11-09 19:54:41,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:41,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:41,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:41,134 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 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 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 19:54:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:44,164 INFO L93 Difference]: Finished difference Result 1686 states and 4154 transitions. [2024-11-09 19:54:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:44,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-09 19:54:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:44,197 INFO L225 Difference]: With dead ends: 1686 [2024-11-09 19:54:44,198 INFO L226 Difference]: Without dead ends: 1014 [2024-11-09 19:54:44,207 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 19:54:44,212 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 895 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:44,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 225 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:54:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-09 19:54:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 999. [2024-11-09 19:54:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 2.4509018036072145) internal successors, (2446), 998 states have internal predecessors, (2446), 0 states have call successors, (0), 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 19:54:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2446 transitions. [2024-11-09 19:54:44,341 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2446 transitions. Word has length 46 [2024-11-09 19:54:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:44,341 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 2446 transitions. [2024-11-09 19:54:44,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 19:54:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2446 transitions. [2024-11-09 19:54:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 19:54:44,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:44,347 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, 1, 1, 1, 1, 1, 1, 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 19:54:44,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:54:44,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:44,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 212174344, now seen corresponding path program 1 times [2024-11-09 19:54:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361109099] [2024-11-09 19:54:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:44,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361109099] [2024-11-09 19:54:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361109099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:44,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:44,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157360410] [2024-11-09 19:54:44,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:44,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:44,643 INFO L87 Difference]: Start difference. First operand 999 states and 2446 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 19:54:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:47,614 INFO L93 Difference]: Finished difference Result 2874 states and 7176 transitions. [2024-11-09 19:54:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:47,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-11-09 19:54:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:47,625 INFO L225 Difference]: With dead ends: 2874 [2024-11-09 19:54:47,625 INFO L226 Difference]: Without dead ends: 1877 [2024-11-09 19:54:47,627 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 19:54:47,628 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 763 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:47,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 466 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:54:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2024-11-09 19:54:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1870. [2024-11-09 19:54:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 2.283574103798823) internal successors, (4268), 1869 states have internal predecessors, (4268), 0 states have call successors, (0), 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 19:54:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 4268 transitions. [2024-11-09 19:54:47,672 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 4268 transitions. Word has length 112 [2024-11-09 19:54:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:47,673 INFO L471 AbstractCegarLoop]: Abstraction has 1870 states and 4268 transitions. [2024-11-09 19:54:47,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 19:54:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 4268 transitions. [2024-11-09 19:54:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 19:54:47,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:47,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:47,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:54:47,679 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:47,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -278991070, now seen corresponding path program 1 times [2024-11-09 19:54:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597870782] [2024-11-09 19:54:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597870782] [2024-11-09 19:54:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597870782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884641524] [2024-11-09 19:54:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:47,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:47,857 INFO L87 Difference]: Start difference. First operand 1870 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:54:50,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:50,468 INFO L93 Difference]: Finished difference Result 5476 states and 12623 transitions. [2024-11-09 19:54:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-09 19:54:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:50,485 INFO L225 Difference]: With dead ends: 5476 [2024-11-09 19:54:50,486 INFO L226 Difference]: Without dead ends: 3608 [2024-11-09 19:54:50,489 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 19:54:50,490 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 766 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:50,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 586 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:54:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2024-11-09 19:54:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3172. [2024-11-09 19:54:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 3171 states have (on average 2.1504257332071903) internal successors, (6819), 3171 states have internal predecessors, (6819), 0 states have call successors, (0), 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 19:54:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 6819 transitions. [2024-11-09 19:54:50,561 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 6819 transitions. Word has length 114 [2024-11-09 19:54:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:50,561 INFO L471 AbstractCegarLoop]: Abstraction has 3172 states and 6819 transitions. [2024-11-09 19:54:50,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:54:50,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 6819 transitions. [2024-11-09 19:54:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-09 19:54:50,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:50,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:50,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:54:50,564 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:50,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash -264246669, now seen corresponding path program 1 times [2024-11-09 19:54:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:50,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719245835] [2024-11-09 19:54:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:50,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719245835] [2024-11-09 19:54:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719245835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345619175] [2024-11-09 19:54:50,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:50,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:54:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:54:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:54:50,812 INFO L87 Difference]: Start difference. First operand 3172 states and 6819 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 19:54:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:54,845 INFO L93 Difference]: Finished difference Result 10241 states and 22609 transitions. [2024-11-09 19:54:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:54:54,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-11-09 19:54:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:54,877 INFO L225 Difference]: With dead ends: 10241 [2024-11-09 19:54:54,877 INFO L226 Difference]: Without dead ends: 7071 [2024-11-09 19:54:54,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:54:54,885 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 1652 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 5032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:54,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 458 Invalid, 5032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:54:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2024-11-09 19:54:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7063. [2024-11-09 19:54:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7062 states have (on average 2.1454262248654774) internal successors, (15151), 7062 states have internal predecessors, (15151), 0 states have call successors, (0), 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 19:54:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 15151 transitions. [2024-11-09 19:54:55,078 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 15151 transitions. Word has length 117 [2024-11-09 19:54:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:55,079 INFO L471 AbstractCegarLoop]: Abstraction has 7063 states and 15151 transitions. [2024-11-09 19:54:55,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 19:54:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 15151 transitions. [2024-11-09 19:54:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-09 19:54:55,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:55,082 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, 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] [2024-11-09 19:54:55,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:54:55,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:55,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1492070364, now seen corresponding path program 1 times [2024-11-09 19:54:55,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:55,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980957975] [2024-11-09 19:54:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:55,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 63 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 19:54:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980957975] [2024-11-09 19:54:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980957975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:54:55,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603761985] [2024-11-09 19:54:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:55,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:54:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:54:55,482 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 19:54:55,483 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 19:54:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:55,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:54:55,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:54:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 19:54:55,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:54:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603761985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:55,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:54:55,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:54:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250746406] [2024-11-09 19:54:55,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:55,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:54:55,703 INFO L87 Difference]: Start difference. First operand 7063 states and 15151 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:54:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:58,009 INFO L93 Difference]: Finished difference Result 18811 states and 40956 transitions. [2024-11-09 19:54:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 183 [2024-11-09 19:54:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:58,047 INFO L225 Difference]: With dead ends: 18811 [2024-11-09 19:54:58,047 INFO L226 Difference]: Without dead ends: 12176 [2024-11-09 19:54:58,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:54:58,056 INFO L432 NwaCegarLoop]: 1050 mSDtfsCounter, 921 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:58,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1081 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:54:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2024-11-09 19:54:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 11323. [2024-11-09 19:54:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11323 states, 11322 states have (on average 2.1881293057763647) internal successors, (24774), 11322 states have internal predecessors, (24774), 0 states have call successors, (0), 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 19:54:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11323 states to 11323 states and 24774 transitions. [2024-11-09 19:54:58,296 INFO L78 Accepts]: Start accepts. Automaton has 11323 states and 24774 transitions. Word has length 183 [2024-11-09 19:54:58,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:58,297 INFO L471 AbstractCegarLoop]: Abstraction has 11323 states and 24774 transitions. [2024-11-09 19:54:58,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:54:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 11323 states and 24774 transitions. [2024-11-09 19:54:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-09 19:54:58,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:58,299 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, 2, 2, 2, 2, 2, 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] [2024-11-09 19:54:58,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:54:58,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:54:58,500 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:58,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:58,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1637343300, now seen corresponding path program 1 times [2024-11-09 19:54:58,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:58,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049462993] [2024-11-09 19:54:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:54:58,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:58,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049462993] [2024-11-09 19:54:58,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049462993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:58,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:58,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:58,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879839717] [2024-11-09 19:54:58,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:58,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:58,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:58,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:58,706 INFO L87 Difference]: Start difference. First operand 11323 states and 24774 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 19:55:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:01,250 INFO L93 Difference]: Finished difference Result 23070 states and 50498 transitions. [2024-11-09 19:55:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:01,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 191 [2024-11-09 19:55:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:01,273 INFO L225 Difference]: With dead ends: 23070 [2024-11-09 19:55:01,273 INFO L226 Difference]: Without dead ends: 11319 [2024-11-09 19:55:01,284 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 19:55:01,286 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 740 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:01,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 586 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:55:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11319 states. [2024-11-09 19:55:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11319 to 8333. [2024-11-09 19:55:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8333 states, 8332 states have (on average 2.0669707153144503) internal successors, (17222), 8332 states have internal predecessors, (17222), 0 states have call successors, (0), 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 19:55:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8333 states to 8333 states and 17222 transitions. [2024-11-09 19:55:01,428 INFO L78 Accepts]: Start accepts. Automaton has 8333 states and 17222 transitions. Word has length 191 [2024-11-09 19:55:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:01,429 INFO L471 AbstractCegarLoop]: Abstraction has 8333 states and 17222 transitions. [2024-11-09 19:55:01,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 19:55:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 8333 states and 17222 transitions. [2024-11-09 19:55:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-09 19:55:01,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:01,431 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:55:01,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:55:01,432 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:01,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2025205663, now seen corresponding path program 1 times [2024-11-09 19:55:01,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:01,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626950089] [2024-11-09 19:55:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626950089] [2024-11-09 19:55:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626950089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805554601] [2024-11-09 19:55:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:01,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:01,640 INFO L87 Difference]: Start difference. First operand 8333 states and 17222 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:03,768 INFO L93 Difference]: Finished difference Result 21350 states and 44754 transitions. [2024-11-09 19:55:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2024-11-09 19:55:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:03,795 INFO L225 Difference]: With dead ends: 21350 [2024-11-09 19:55:03,796 INFO L226 Difference]: Without dead ends: 13019 [2024-11-09 19:55:03,805 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 19:55:03,806 INFO L432 NwaCegarLoop]: 1106 mSDtfsCounter, 849 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:03,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1164 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:55:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13019 states. [2024-11-09 19:55:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13019 to 13019. [2024-11-09 19:55:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13019 states, 13018 states have (on average 2.0484713473651865) internal successors, (26667), 13018 states have internal predecessors, (26667), 0 states have call successors, (0), 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 19:55:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13019 states to 13019 states and 26667 transitions. [2024-11-09 19:55:03,981 INFO L78 Accepts]: Start accepts. Automaton has 13019 states and 26667 transitions. Word has length 204 [2024-11-09 19:55:03,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:03,981 INFO L471 AbstractCegarLoop]: Abstraction has 13019 states and 26667 transitions. [2024-11-09 19:55:03,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:03,982 INFO L276 IsEmpty]: Start isEmpty. Operand 13019 states and 26667 transitions. [2024-11-09 19:55:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-09 19:55:03,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:03,987 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:03,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:55:03,989 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:03,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:03,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1858708061, now seen corresponding path program 1 times [2024-11-09 19:55:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:03,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660572473] [2024-11-09 19:55:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:03,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 19:55:04,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:04,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660572473] [2024-11-09 19:55:04,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660572473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:04,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:04,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:04,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042771815] [2024-11-09 19:55:04,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:04,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:04,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:04,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:04,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:04,236 INFO L87 Difference]: Start difference. First operand 13019 states and 26667 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 19:55:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:06,684 INFO L93 Difference]: Finished difference Result 31562 states and 64701 transitions. [2024-11-09 19:55:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:06,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 302 [2024-11-09 19:55:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:06,713 INFO L225 Difference]: With dead ends: 31562 [2024-11-09 19:55:06,713 INFO L226 Difference]: Without dead ends: 17693 [2024-11-09 19:55:06,727 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 19:55:06,728 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 758 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:06,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1309 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:55:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17693 states. [2024-11-09 19:55:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17693 to 12143. [2024-11-09 19:55:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 2.0027178389062756) internal successors, (24317), 12142 states have internal predecessors, (24317), 0 states have call successors, (0), 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 19:55:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 24317 transitions. [2024-11-09 19:55:06,910 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 24317 transitions. Word has length 302 [2024-11-09 19:55:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:06,911 INFO L471 AbstractCegarLoop]: Abstraction has 12143 states and 24317 transitions. [2024-11-09 19:55:06,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 19:55:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 24317 transitions. [2024-11-09 19:55:06,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-09 19:55:06,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:06,917 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:06,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:55:06,917 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:06,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash 158268837, now seen corresponding path program 1 times [2024-11-09 19:55:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159978269] [2024-11-09 19:55:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-09 19:55:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159978269] [2024-11-09 19:55:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159978269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207909003] [2024-11-09 19:55:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:07,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:07,083 INFO L87 Difference]: Start difference. First operand 12143 states and 24317 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 19:55:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:09,353 INFO L93 Difference]: Finished difference Result 25532 states and 51005 transitions. [2024-11-09 19:55:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 319 [2024-11-09 19:55:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:09,375 INFO L225 Difference]: With dead ends: 25532 [2024-11-09 19:55:09,375 INFO L226 Difference]: Without dead ends: 12518 [2024-11-09 19:55:09,387 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 19:55:09,389 INFO L432 NwaCegarLoop]: 990 mSDtfsCounter, 851 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:09,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1033 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:55:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2024-11-09 19:55:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 11663. [2024-11-09 19:55:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11663 states, 11662 states have (on average 1.9767621334247985) internal successors, (23053), 11662 states have internal predecessors, (23053), 0 states have call successors, (0), 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 19:55:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11663 states to 11663 states and 23053 transitions. [2024-11-09 19:55:09,542 INFO L78 Accepts]: Start accepts. Automaton has 11663 states and 23053 transitions. Word has length 319 [2024-11-09 19:55:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:09,543 INFO L471 AbstractCegarLoop]: Abstraction has 11663 states and 23053 transitions. [2024-11-09 19:55:09,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 19:55:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11663 states and 23053 transitions. [2024-11-09 19:55:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-09 19:55:09,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:09,551 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, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:09,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:55:09,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:09,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1459960619, now seen corresponding path program 1 times [2024-11-09 19:55:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310835255] [2024-11-09 19:55:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-09 19:55:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:10,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310835255] [2024-11-09 19:55:10,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310835255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:10,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:10,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:55:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680482610] [2024-11-09 19:55:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:10,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:10,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:10,330 INFO L87 Difference]: Start difference. First operand 11663 states and 23053 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 19:55:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:13,654 INFO L93 Difference]: Finished difference Result 34466 states and 68347 transitions. [2024-11-09 19:55:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:13,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 372 [2024-11-09 19:55:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:13,689 INFO L225 Difference]: With dead ends: 34466 [2024-11-09 19:55:13,689 INFO L226 Difference]: Without dead ends: 22805 [2024-11-09 19:55:13,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:13,704 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1621 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:13,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 198 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3877 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:55:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22805 states. [2024-11-09 19:55:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22805 to 16394. [2024-11-09 19:55:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16394 states, 16393 states have (on average 1.9863966327090832) internal successors, (32563), 16393 states have internal predecessors, (32563), 0 states have call successors, (0), 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 19:55:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16394 states to 16394 states and 32563 transitions. [2024-11-09 19:55:14,013 INFO L78 Accepts]: Start accepts. Automaton has 16394 states and 32563 transitions. Word has length 372 [2024-11-09 19:55:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:14,014 INFO L471 AbstractCegarLoop]: Abstraction has 16394 states and 32563 transitions. [2024-11-09 19:55:14,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 19:55:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 16394 states and 32563 transitions. [2024-11-09 19:55:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-09 19:55:14,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:14,024 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:14,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:55:14,024 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:14,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2010304918, now seen corresponding path program 1 times [2024-11-09 19:55:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:14,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564144154] [2024-11-09 19:55:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 19:55:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564144154] [2024-11-09 19:55:14,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564144154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:14,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:14,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:14,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816707583] [2024-11-09 19:55:14,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:14,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:14,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:14,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:14,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:14,361 INFO L87 Difference]: Start difference. First operand 16394 states and 32563 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 19:55:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:16,414 INFO L93 Difference]: Finished difference Result 40945 states and 81739 transitions. [2024-11-09 19:55:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:16,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 391 [2024-11-09 19:55:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:16,442 INFO L225 Difference]: With dead ends: 40945 [2024-11-09 19:55:16,442 INFO L226 Difference]: Without dead ends: 24553 [2024-11-09 19:55:16,454 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 19:55:16,454 INFO L432 NwaCegarLoop]: 1140 mSDtfsCounter, 735 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:16,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1211 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:55:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24553 states. [2024-11-09 19:55:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24553 to 24118. [2024-11-09 19:55:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24118 states, 24117 states have (on average 1.9635526806816768) internal successors, (47355), 24117 states have internal predecessors, (47355), 0 states have call successors, (0), 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 19:55:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24118 states to 24118 states and 47355 transitions. [2024-11-09 19:55:16,763 INFO L78 Accepts]: Start accepts. Automaton has 24118 states and 47355 transitions. Word has length 391 [2024-11-09 19:55:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:16,764 INFO L471 AbstractCegarLoop]: Abstraction has 24118 states and 47355 transitions. [2024-11-09 19:55:16,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 19:55:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 24118 states and 47355 transitions. [2024-11-09 19:55:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-09 19:55:16,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:16,778 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:55:16,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:55:16,778 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:16,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2109694184, now seen corresponding path program 1 times [2024-11-09 19:55:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:16,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19193880] [2024-11-09 19:55:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:55:17,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19193880] [2024-11-09 19:55:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19193880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:17,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:17,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:55:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268819715] [2024-11-09 19:55:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:17,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:17,529 INFO L87 Difference]: Start difference. First operand 24118 states and 47355 transitions. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 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 19:55:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:21,094 INFO L93 Difference]: Finished difference Result 71319 states and 140301 transitions. [2024-11-09 19:55:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 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 454 [2024-11-09 19:55:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:21,154 INFO L225 Difference]: With dead ends: 71319 [2024-11-09 19:55:21,154 INFO L226 Difference]: Without dead ends: 47203 [2024-11-09 19:55:21,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:21,173 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 1493 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 4528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:21,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 186 Invalid, 4528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 4088 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:55:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47203 states. [2024-11-09 19:55:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47203 to 40742. [2024-11-09 19:55:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40742 states, 40741 states have (on average 1.9621266046488794) internal successors, (79939), 40741 states have internal predecessors, (79939), 0 states have call successors, (0), 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 19:55:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40742 states to 40742 states and 79939 transitions. [2024-11-09 19:55:21,742 INFO L78 Accepts]: Start accepts. Automaton has 40742 states and 79939 transitions. Word has length 454 [2024-11-09 19:55:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:21,743 INFO L471 AbstractCegarLoop]: Abstraction has 40742 states and 79939 transitions. [2024-11-09 19:55:21,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 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 19:55:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 40742 states and 79939 transitions. [2024-11-09 19:55:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-09 19:55:21,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:21,757 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:21,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:55:21,757 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:21,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2048611231, now seen corresponding path program 1 times [2024-11-09 19:55:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304305084] [2024-11-09 19:55:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 19:55:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304305084] [2024-11-09 19:55:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304305084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:22,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374233448] [2024-11-09 19:55:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:22,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:22,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:22,247 INFO L87 Difference]: Start difference. First operand 40742 states and 79939 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:24,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:24,535 INFO L93 Difference]: Finished difference Result 94725 states and 186318 transitions. [2024-11-09 19:55:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:24,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2024-11-09 19:55:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:24,627 INFO L225 Difference]: With dead ends: 94725 [2024-11-09 19:55:24,627 INFO L226 Difference]: Without dead ends: 53551 [2024-11-09 19:55:24,656 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 19:55:24,657 INFO L432 NwaCegarLoop]: 964 mSDtfsCounter, 799 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:24,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1003 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:55:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53551 states. [2024-11-09 19:55:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53551 to 50131. [2024-11-09 19:55:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50131 states, 50130 states have (on average 1.9582685018950727) internal successors, (98168), 50130 states have internal predecessors, (98168), 0 states have call successors, (0), 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 19:55:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50131 states to 50131 states and 98168 transitions. [2024-11-09 19:55:25,411 INFO L78 Accepts]: Start accepts. Automaton has 50131 states and 98168 transitions. Word has length 474 [2024-11-09 19:55:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:25,411 INFO L471 AbstractCegarLoop]: Abstraction has 50131 states and 98168 transitions. [2024-11-09 19:55:25,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:25,411 INFO L276 IsEmpty]: Start isEmpty. Operand 50131 states and 98168 transitions. [2024-11-09 19:55:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-09 19:55:25,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:25,425 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:25,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:55:25,426 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:25,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2071630843, now seen corresponding path program 1 times [2024-11-09 19:55:25,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:25,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379565193] [2024-11-09 19:55:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:25,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-09 19:55:26,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379565193] [2024-11-09 19:55:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379565193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:26,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:26,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:55:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275307531] [2024-11-09 19:55:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:26,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:26,677 INFO L87 Difference]: Start difference. First operand 50131 states and 98168 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 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 19:55:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:30,311 INFO L93 Difference]: Finished difference Result 127616 states and 249431 transitions. [2024-11-09 19:55:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:30,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 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 478 [2024-11-09 19:55:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:30,415 INFO L225 Difference]: With dead ends: 127616 [2024-11-09 19:55:30,415 INFO L226 Difference]: Without dead ends: 77487 [2024-11-09 19:55:30,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:30,449 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1529 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 4240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:30,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 179 Invalid, 4240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:55:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77487 states. [2024-11-09 19:55:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77487 to 72361. [2024-11-09 19:55:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72361 states, 72360 states have (on average 1.9537037037037037) internal successors, (141370), 72360 states have internal predecessors, (141370), 0 states have call successors, (0), 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 19:55:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72361 states to 72361 states and 141370 transitions. [2024-11-09 19:55:31,733 INFO L78 Accepts]: Start accepts. Automaton has 72361 states and 141370 transitions. Word has length 478 [2024-11-09 19:55:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:31,733 INFO L471 AbstractCegarLoop]: Abstraction has 72361 states and 141370 transitions. [2024-11-09 19:55:31,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 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 19:55:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72361 states and 141370 transitions. [2024-11-09 19:55:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-09 19:55:31,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:31,751 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:31,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:55:31,752 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:31,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1992198586, now seen corresponding path program 1 times [2024-11-09 19:55:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205739877] [2024-11-09 19:55:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-09 19:55:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205739877] [2024-11-09 19:55:32,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205739877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:32,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:32,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:55:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161851654] [2024-11-09 19:55:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:32,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:32,587 INFO L87 Difference]: Start difference. First operand 72361 states and 141370 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 19:55:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:36,480 INFO L93 Difference]: Finished difference Result 167771 states and 327421 transitions. [2024-11-09 19:55:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:36,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 498 [2024-11-09 19:55:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:36,662 INFO L225 Difference]: With dead ends: 167771 [2024-11-09 19:55:36,662 INFO L226 Difference]: Without dead ends: 94558 [2024-11-09 19:55:36,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:36,710 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 1520 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 4228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:36,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 199 Invalid, 4228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:55:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94558 states. [2024-11-09 19:55:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94558 to 70646. [2024-11-09 19:55:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70646 states, 70645 states have (on average 1.9501875575058392) internal successors, (137771), 70645 states have internal predecessors, (137771), 0 states have call successors, (0), 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 19:55:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70646 states to 70646 states and 137771 transitions. [2024-11-09 19:55:37,981 INFO L78 Accepts]: Start accepts. Automaton has 70646 states and 137771 transitions. Word has length 498 [2024-11-09 19:55:37,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:37,981 INFO L471 AbstractCegarLoop]: Abstraction has 70646 states and 137771 transitions. [2024-11-09 19:55:37,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 19:55:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 70646 states and 137771 transitions. [2024-11-09 19:55:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-09 19:55:37,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:37,993 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:55:37,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:55:37,994 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:37,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:37,994 INFO L85 PathProgramCache]: Analyzing trace with hash -770886341, now seen corresponding path program 1 times [2024-11-09 19:55:37,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:37,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068405968] [2024-11-09 19:55:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:37,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 639 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 19:55:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068405968] [2024-11-09 19:55:38,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068405968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:38,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:38,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:55:38,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942443961] [2024-11-09 19:55:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:38,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:38,898 INFO L87 Difference]: Start difference. First operand 70646 states and 137771 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 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 19:55:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:42,682 INFO L93 Difference]: Finished difference Result 169079 states and 330346 transitions. [2024-11-09 19:55:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 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 518 [2024-11-09 19:55:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:42,803 INFO L225 Difference]: With dead ends: 169079 [2024-11-09 19:55:42,803 INFO L226 Difference]: Without dead ends: 98435 [2024-11-09 19:55:42,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:42,838 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 1543 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 4165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:42,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 214 Invalid, 4165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:55:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98435 states. [2024-11-09 19:55:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98435 to 92451. [2024-11-09 19:55:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92451 states, 92450 states have (on average 1.9588858842617631) internal successors, (181099), 92450 states have internal predecessors, (181099), 0 states have call successors, (0), 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 19:55:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92451 states to 92451 states and 181099 transitions. [2024-11-09 19:55:44,769 INFO L78 Accepts]: Start accepts. Automaton has 92451 states and 181099 transitions. Word has length 518 [2024-11-09 19:55:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:44,770 INFO L471 AbstractCegarLoop]: Abstraction has 92451 states and 181099 transitions. [2024-11-09 19:55:44,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 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 19:55:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 92451 states and 181099 transitions. [2024-11-09 19:55:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-09 19:55:44,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:44,793 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:44,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:55:44,794 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:44,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:44,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1735204768, now seen corresponding path program 1 times [2024-11-09 19:55:44,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:44,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134366242] [2024-11-09 19:55:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:44,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 598 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 19:55:45,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134366242] [2024-11-09 19:55:45,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134366242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:45,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:45,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:45,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368911322] [2024-11-09 19:55:45,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:45,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:45,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:45,269 INFO L87 Difference]: Start difference. First operand 92451 states and 181099 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 19:55:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:47,998 INFO L93 Difference]: Finished difference Result 210054 states and 412429 transitions. [2024-11-09 19:55:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 537 [2024-11-09 19:55:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:48,588 INFO L225 Difference]: With dead ends: 210054 [2024-11-09 19:55:48,588 INFO L226 Difference]: Without dead ends: 117605 [2024-11-09 19:55:48,621 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 19:55:48,621 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 754 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:48,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 305 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:55:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117605 states.