./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label41.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_label41.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 f21db4ac76946ee444b77ff65c558a63b1f97c46b1265b72698e02c79e47e23e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:54:00,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:54:00,990 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:54:00,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:54:00,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:54:01,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:54:01,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:54:01,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:54:01,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:54:01,026 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:54:01,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:54:01,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:54:01,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:54:01,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:54:01,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:54:01,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:54:01,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:54:01,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:54:01,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:54:01,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:54:01,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:54:01,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:54:01,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:54:01,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:54:01,033 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:54:01,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:54:01,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:54:01,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:54:01,034 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:54:01,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:54:01,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:54:01,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:54:01,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:54:01,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:54:01,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:54:01,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:54:01,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:54:01,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:54:01,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:54:01,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:54:01,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:54:01,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:54:01,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f21db4ac76946ee444b77ff65c558a63b1f97c46b1265b72698e02c79e47e23e [2024-11-09 19:54:01,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:54:01,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:54:01,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:54:01,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:54:01,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:54:01,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label41.c [2024-11-09 19:54:02,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:54:03,066 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:54:03,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label41.c [2024-11-09 19:54:03,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805da266a/b48fbdaae4f8471fa6d90a9305a04afc/FLAGee0abffdf [2024-11-09 19:54:03,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805da266a/b48fbdaae4f8471fa6d90a9305a04afc [2024-11-09 19:54:03,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:54:03,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:54:03,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:54:03,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:54:03,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:54:03,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:54:03" (1/1) ... [2024-11-09 19:54:03,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302c99dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:03, skipping insertion in model container [2024-11-09 19:54:03,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:54:03" (1/1) ... [2024-11-09 19:54:03,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:54:03,713 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_label41.c[5202,5215] [2024-11-09 19:54:04,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:54:04,234 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:54:04,262 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_label41.c[5202,5215] [2024-11-09 19:54:04,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:54:04,633 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:54:04,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04 WrapperNode [2024-11-09 19:54:04,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:54:04,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:54:04,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:54:04,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:54:04,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:04,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:04,964 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:54:04,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:54:04,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:54:04,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:54:04,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:54:04,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:04,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,256 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 19:54:05,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,393 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:54:05,529 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:54:05,529 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:54:05,529 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:54:05,530 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (1/1) ... [2024-11-09 19:54:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:54:05,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:54:05,569 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 19:54:05,573 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 19:54:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:54:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:54:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:54:05,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:54:05,688 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:54:05,690 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:54:09,484 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:54:09,690 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:54:09,692 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:54:09,731 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:54:09,733 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:54:09,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:54:09 BoogieIcfgContainer [2024-11-09 19:54:09,733 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:54:09,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:54:09,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:54:09,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:54:09,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:54:03" (1/3) ... [2024-11-09 19:54:09,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350e4533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:54:09, skipping insertion in model container [2024-11-09 19:54:09,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:54:04" (2/3) ... [2024-11-09 19:54:09,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350e4533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:54:09, skipping insertion in model container [2024-11-09 19:54:09,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:54:09" (3/3) ... [2024-11-09 19:54:09,743 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label41.c [2024-11-09 19:54:09,759 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:54:09,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:54:09,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:54:09,865 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;@229e7b25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:54:09,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:54:09,871 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 19:54:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 19:54:09,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:09,882 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] [2024-11-09 19:54:09,883 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:09,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash -473392754, now seen corresponding path program 1 times [2024-11-09 19:54:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:09,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645961937] [2024-11-09 19:54:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:10,237 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 19:54:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:10,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645961937] [2024-11-09 19:54:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645961937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:10,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641361032] [2024-11-09 19:54:10,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:10,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:10,269 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 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 19:54:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:13,209 INFO L93 Difference]: Finished difference Result 1650 states and 4109 transitions. [2024-11-09 19:54:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-09 19:54:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:13,233 INFO L225 Difference]: With dead ends: 1650 [2024-11-09 19:54:13,233 INFO L226 Difference]: Without dead ends: 980 [2024-11-09 19:54:13,239 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 19:54:13,242 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 812 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:13,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 506 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:54:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-09 19:54:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-09 19:54:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 2.287769784172662) internal successors, (2226), 973 states have internal predecessors, (2226), 0 states have call successors, (0), 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 19:54:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 2226 transitions. [2024-11-09 19:54:13,332 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 2226 transitions. Word has length 36 [2024-11-09 19:54:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:13,333 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 2226 transitions. [2024-11-09 19:54:13,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 19:54:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 2226 transitions. [2024-11-09 19:54:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 19:54:13,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:13,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:13,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:54:13,336 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:13,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1388690703, now seen corresponding path program 1 times [2024-11-09 19:54:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700378232] [2024-11-09 19:54:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:13,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:13,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:13,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700378232] [2024-11-09 19:54:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700378232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:13,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206362294] [2024-11-09 19:54:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:13,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:13,550 INFO L87 Difference]: Start difference. First operand 974 states and 2226 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:16,431 INFO L93 Difference]: Finished difference Result 2821 states and 6537 transitions. [2024-11-09 19:54:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-09 19:54:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:16,440 INFO L225 Difference]: With dead ends: 2821 [2024-11-09 19:54:16,440 INFO L226 Difference]: Without dead ends: 1849 [2024-11-09 19:54:16,442 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 19:54:16,443 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 763 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:16,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 584 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:54:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-09 19:54:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1846. [2024-11-09 19:54:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 2.12520325203252) internal successors, (3921), 1845 states have internal predecessors, (3921), 0 states have call successors, (0), 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 19:54:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 3921 transitions. [2024-11-09 19:54:16,486 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 3921 transitions. Word has length 104 [2024-11-09 19:54:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:16,487 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 3921 transitions. [2024-11-09 19:54:16,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 3921 transitions. [2024-11-09 19:54:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 19:54:16,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:16,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:16,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:54:16,490 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:16,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 890294082, now seen corresponding path program 1 times [2024-11-09 19:54:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344268453] [2024-11-09 19:54:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:16,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:16,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344268453] [2024-11-09 19:54:16,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344268453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:16,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:16,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:16,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349611661] [2024-11-09 19:54:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:16,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:16,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:16,756 INFO L87 Difference]: Start difference. First operand 1846 states and 3921 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:19,308 INFO L93 Difference]: Finished difference Result 4564 states and 9874 transitions. [2024-11-09 19:54:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-09 19:54:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:19,323 INFO L225 Difference]: With dead ends: 4564 [2024-11-09 19:54:19,324 INFO L226 Difference]: Without dead ends: 2720 [2024-11-09 19:54:19,328 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 19:54:19,331 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 831 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:19,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1250 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:54:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2024-11-09 19:54:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2718. [2024-11-09 19:54:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.090172984909827) internal successors, (5679), 2717 states have internal predecessors, (5679), 0 states have call successors, (0), 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 19:54:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 5679 transitions. [2024-11-09 19:54:19,388 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 5679 transitions. Word has length 107 [2024-11-09 19:54:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:19,390 INFO L471 AbstractCegarLoop]: Abstraction has 2718 states and 5679 transitions. [2024-11-09 19:54:19,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 5679 transitions. [2024-11-09 19:54:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 19:54:19,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:19,399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:54:19,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:54:19,399 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:19,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -999060673, now seen corresponding path program 1 times [2024-11-09 19:54:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:19,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656178773] [2024-11-09 19:54:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:54:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656178773] [2024-11-09 19:54:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656178773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:54:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258956579] [2024-11-09 19:54:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:19,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:19,730 INFO L87 Difference]: Start difference. First operand 2718 states and 5679 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:21,974 INFO L93 Difference]: Finished difference Result 8004 states and 16825 transitions. [2024-11-09 19:54:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:21,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2024-11-09 19:54:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:21,991 INFO L225 Difference]: With dead ends: 8004 [2024-11-09 19:54:21,991 INFO L226 Difference]: Without dead ends: 4432 [2024-11-09 19:54:21,995 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 19:54:21,996 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:21,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:54:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2024-11-09 19:54:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3580. [2024-11-09 19:54:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 1.9773679798826487) internal successors, (7077), 3579 states have internal predecessors, (7077), 0 states have call successors, (0), 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 19:54:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 7077 transitions. [2024-11-09 19:54:22,080 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 7077 transitions. Word has length 177 [2024-11-09 19:54:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:22,081 INFO L471 AbstractCegarLoop]: Abstraction has 3580 states and 7077 transitions. [2024-11-09 19:54:22,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 7077 transitions. [2024-11-09 19:54:22,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-09 19:54:22,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:22,086 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:54:22,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:54:22,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:22,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash 702939740, now seen corresponding path program 1 times [2024-11-09 19:54:22,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:22,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270024876] [2024-11-09 19:54:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:22,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270024876] [2024-11-09 19:54:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270024876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:22,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:22,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684102630] [2024-11-09 19:54:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:22,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:22,303 INFO L87 Difference]: Start difference. First operand 3580 states and 7077 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 19:54:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:24,526 INFO L93 Difference]: Finished difference Result 9296 states and 18628 transitions. [2024-11-09 19:54:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:24,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2024-11-09 19:54:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:24,550 INFO L225 Difference]: With dead ends: 9296 [2024-11-09 19:54:24,550 INFO L226 Difference]: Without dead ends: 5718 [2024-11-09 19:54:24,555 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 19:54:24,557 INFO L432 NwaCegarLoop]: 1087 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:24,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1147 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:54:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2024-11-09 19:54:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5718. [2024-11-09 19:54:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 1.9732377120867588) internal successors, (11281), 5717 states have internal predecessors, (11281), 0 states have call successors, (0), 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 19:54:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 11281 transitions. [2024-11-09 19:54:24,658 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 11281 transitions. Word has length 190 [2024-11-09 19:54:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:24,659 INFO L471 AbstractCegarLoop]: Abstraction has 5718 states and 11281 transitions. [2024-11-09 19:54:24,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 19:54:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 11281 transitions. [2024-11-09 19:54:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-09 19:54:24,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:24,662 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:54:24,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:54:24,663 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:24,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2060929974, now seen corresponding path program 1 times [2024-11-09 19:54:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:24,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915578897] [2024-11-09 19:54:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:54:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915578897] [2024-11-09 19:54:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915578897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:24,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:24,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061689655] [2024-11-09 19:54:24,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:24,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:24,826 INFO L87 Difference]: Start difference. First operand 5718 states and 11281 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 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 19:54:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:26,882 INFO L93 Difference]: Finished difference Result 14411 states and 28625 transitions. [2024-11-09 19:54:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 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 192 [2024-11-09 19:54:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:26,911 INFO L225 Difference]: With dead ends: 14411 [2024-11-09 19:54:26,912 INFO L226 Difference]: Without dead ends: 8694 [2024-11-09 19:54:26,918 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 19:54:26,919 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 775 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:26,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 450 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:54:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8694 states. [2024-11-09 19:54:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8694 to 5691. [2024-11-09 19:54:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5691 states, 5690 states have (on average 1.9753954305799648) internal successors, (11240), 5690 states have internal predecessors, (11240), 0 states have call successors, (0), 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 19:54:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 11240 transitions. [2024-11-09 19:54:27,040 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 11240 transitions. Word has length 192 [2024-11-09 19:54:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:27,041 INFO L471 AbstractCegarLoop]: Abstraction has 5691 states and 11240 transitions. [2024-11-09 19:54:27,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 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 19:54:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 11240 transitions. [2024-11-09 19:54:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-09 19:54:27,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:27,045 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:54:27,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:54:27,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:27,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 47958157, now seen corresponding path program 1 times [2024-11-09 19:54:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190966308] [2024-11-09 19:54:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-09 19:54:27,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:27,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190966308] [2024-11-09 19:54:27,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190966308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:27,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:27,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:27,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456818785] [2024-11-09 19:54:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:27,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:27,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:27,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:27,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:27,274 INFO L87 Difference]: Start difference. First operand 5691 states and 11240 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 19:54:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:29,709 INFO L93 Difference]: Finished difference Result 14350 states and 28529 transitions. [2024-11-09 19:54:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 271 [2024-11-09 19:54:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:29,727 INFO L225 Difference]: With dead ends: 14350 [2024-11-09 19:54:29,727 INFO L226 Difference]: Without dead ends: 7809 [2024-11-09 19:54:29,733 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 19:54:29,734 INFO L432 NwaCegarLoop]: 1139 mSDtfsCounter, 741 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:29,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1210 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:54:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2024-11-09 19:54:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7809. [2024-11-09 19:54:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7809 states, 7808 states have (on average 1.9436475409836065) internal successors, (15176), 7808 states have internal predecessors, (15176), 0 states have call successors, (0), 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 19:54:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 15176 transitions. [2024-11-09 19:54:29,851 INFO L78 Accepts]: Start accepts. Automaton has 7809 states and 15176 transitions. Word has length 271 [2024-11-09 19:54:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:29,852 INFO L471 AbstractCegarLoop]: Abstraction has 7809 states and 15176 transitions. [2024-11-09 19:54:29,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 19:54:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7809 states and 15176 transitions. [2024-11-09 19:54:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-09 19:54:29,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:29,857 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-09 19:54:29,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:54:29,858 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:29,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash -813051974, now seen corresponding path program 1 times [2024-11-09 19:54:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:29,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480557755] [2024-11-09 19:54:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-09 19:54:30,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:30,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480557755] [2024-11-09 19:54:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480557755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:30,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:30,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:30,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980842588] [2024-11-09 19:54:30,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:30,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:30,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:30,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:30,173 INFO L87 Difference]: Start difference. First operand 7809 states and 15176 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 19:54:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:32,495 INFO L93 Difference]: Finished difference Result 22475 states and 43785 transitions. [2024-11-09 19:54:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:32,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 311 [2024-11-09 19:54:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:32,526 INFO L225 Difference]: With dead ends: 22475 [2024-11-09 19:54:32,526 INFO L226 Difference]: Without dead ends: 14668 [2024-11-09 19:54:32,536 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 19:54:32,536 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 829 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:32,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 308 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:54:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2024-11-09 19:54:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 13795. [2024-11-09 19:54:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 1.9441786283891547) internal successors, (26818), 13794 states have internal predecessors, (26818), 0 states have call successors, (0), 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 19:54:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 26818 transitions. [2024-11-09 19:54:32,725 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 26818 transitions. Word has length 311 [2024-11-09 19:54:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:32,726 INFO L471 AbstractCegarLoop]: Abstraction has 13795 states and 26818 transitions. [2024-11-09 19:54:32,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 19:54:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 26818 transitions. [2024-11-09 19:54:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-09 19:54:32,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:32,733 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:54:32,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:54:32,733 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:32,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash 108195564, now seen corresponding path program 1 times [2024-11-09 19:54:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:32,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790392325] [2024-11-09 19:54:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:33,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790392325] [2024-11-09 19:54:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790392325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:54:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461030226] [2024-11-09 19:54:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:33,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:54:33,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:54:33,322 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 19:54:33,324 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 19:54:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:33,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:54:33,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:54:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 33 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:33,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:54:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461030226] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:54:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:54:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-11-09 19:54:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902200536] [2024-11-09 19:54:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:34,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:54:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:34,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:54:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:54:34,419 INFO L87 Difference]: Start difference. First operand 13795 states and 26818 transitions. Second operand has 5 states, 5 states have (on average 65.4) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:38,955 INFO L93 Difference]: Finished difference Result 48120 states and 94246 transitions. [2024-11-09 19:54:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:54:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2024-11-09 19:54:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:39,017 INFO L225 Difference]: With dead ends: 48120 [2024-11-09 19:54:39,018 INFO L226 Difference]: Without dead ends: 33039 [2024-11-09 19:54:39,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:54:39,037 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 3111 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4562 mSolverCounterSat, 1298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3111 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 5860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1298 IncrementalHoareTripleChecker+Valid, 4562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:39,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3111 Valid, 238 Invalid, 5860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1298 Valid, 4562 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:54:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33039 states. [2024-11-09 19:54:39,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33039 to 33032. [2024-11-09 19:54:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33032 states, 33031 states have (on average 1.9463837001604554) internal successors, (64291), 33031 states have internal predecessors, (64291), 0 states have call successors, (0), 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 19:54:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33032 states to 33032 states and 64291 transitions. [2024-11-09 19:54:39,585 INFO L78 Accepts]: Start accepts. Automaton has 33032 states and 64291 transitions. Word has length 327 [2024-11-09 19:54:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:39,586 INFO L471 AbstractCegarLoop]: Abstraction has 33032 states and 64291 transitions. [2024-11-09 19:54:39,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 33032 states and 64291 transitions. [2024-11-09 19:54:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-09 19:54:39,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:39,603 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:39,621 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 19:54:39,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:54:39,805 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:39,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 979895159, now seen corresponding path program 1 times [2024-11-09 19:54:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680928942] [2024-11-09 19:54:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 337 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680928942] [2024-11-09 19:54:40,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680928942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:54:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432025851] [2024-11-09 19:54:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:40,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:54:40,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:54:40,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:54:40,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:54:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:41,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:54:41,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:54:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 19:54:41,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:54:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 19:54:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432025851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:54:42,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:54:42,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-09 19:54:42,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640354307] [2024-11-09 19:54:42,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:54:42,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:54:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:42,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:54:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:54:42,529 INFO L87 Difference]: Start difference. First operand 33032 states and 64291 transitions. Second operand has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 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 19:54:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:58,154 INFO L93 Difference]: Finished difference Result 128007 states and 249938 transitions. [2024-11-09 19:54:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 19:54:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 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 19:54:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:58,282 INFO L225 Difference]: With dead ends: 128007 [2024-11-09 19:54:58,282 INFO L226 Difference]: Without dead ends: 94125 [2024-11-09 19:54:58,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 957 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-11-09 19:54:58,313 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 17256 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 19954 mSolverCounterSat, 2804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17256 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 22758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2804 IncrementalHoareTripleChecker+Valid, 19954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:58,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17256 Valid, 416 Invalid, 22758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2804 Valid, 19954 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2024-11-09 19:54:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94125 states. [2024-11-09 19:54:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94125 to 85526. [2024-11-09 19:54:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85526 states, 85525 states have (on average 1.938322128032739) internal successors, (165775), 85525 states have internal predecessors, (165775), 0 states have call successors, (0), 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 19:55:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85526 states to 85526 states and 165775 transitions. [2024-11-09 19:55:00,178 INFO L78 Accepts]: Start accepts. Automaton has 85526 states and 165775 transitions. Word has length 474 [2024-11-09 19:55:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:00,179 INFO L471 AbstractCegarLoop]: Abstraction has 85526 states and 165775 transitions. [2024-11-09 19:55:00,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 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 19:55:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 85526 states and 165775 transitions. [2024-11-09 19:55:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-11-09 19:55:00,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:00,220 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:00,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:55:00,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 19:55:00,421 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:00,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 153780148, now seen corresponding path program 1 times [2024-11-09 19:55:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710451417] [2024-11-09 19:55:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:55:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710451417] [2024-11-09 19:55:01,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710451417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:01,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:01,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:55:01,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608476382] [2024-11-09 19:55:01,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:01,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:01,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:01,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:01,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:55:01,406 INFO L87 Difference]: Start difference. First operand 85526 states and 165775 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 19:55:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:05,056 INFO L93 Difference]: Finished difference Result 195402 states and 379985 transitions. [2024-11-09 19:55:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:05,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 517 [2024-11-09 19:55:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:05,217 INFO L225 Difference]: With dead ends: 195402 [2024-11-09 19:55:05,217 INFO L226 Difference]: Without dead ends: 103038 [2024-11-09 19:55:05,420 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 19:55:05,421 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 2051 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:05,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 1088 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:55:05,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103038 states. [2024-11-09 19:55:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103038 to 101718. [2024-11-09 19:55:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101718 states, 101717 states have (on average 1.9394496495177798) internal successors, (197275), 101717 states have internal predecessors, (197275), 0 states have call successors, (0), 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 19:55:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101718 states to 101718 states and 197275 transitions. [2024-11-09 19:55:07,347 INFO L78 Accepts]: Start accepts. Automaton has 101718 states and 197275 transitions. Word has length 517 [2024-11-09 19:55:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:07,348 INFO L471 AbstractCegarLoop]: Abstraction has 101718 states and 197275 transitions. [2024-11-09 19:55:07,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 19:55:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 101718 states and 197275 transitions. [2024-11-09 19:55:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-09 19:55:07,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:07,389 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:55:07,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:55:07,389 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:07,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1208046545, now seen corresponding path program 1 times [2024-11-09 19:55:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:07,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893834447] [2024-11-09 19:55:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-09 19:55:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:07,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893834447] [2024-11-09 19:55:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893834447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:07,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:07,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:55:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200976193] [2024-11-09 19:55:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:07,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:07,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:07,888 INFO L87 Difference]: Start difference. First operand 101718 states and 197275 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 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 19:55:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:09,552 INFO L93 Difference]: Finished difference Result 192721 states and 372734 transitions. [2024-11-09 19:55:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:09,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 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 531 [2024-11-09 19:55:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:09,693 INFO L225 Difference]: With dead ends: 192721 [2024-11-09 19:55:09,693 INFO L226 Difference]: Without dead ends: 91856 [2024-11-09 19:55:09,751 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 19:55:09,752 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 957 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:09,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 92 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:55:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91856 states. [2024-11-09 19:55:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91856 to 82473. [2024-11-09 19:55:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82473 states, 82472 states have (on average 1.929491221262974) internal successors, (159129), 82472 states have internal predecessors, (159129), 0 states have call successors, (0), 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 19:55:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82473 states to 82473 states and 159129 transitions. [2024-11-09 19:55:11,196 INFO L78 Accepts]: Start accepts. Automaton has 82473 states and 159129 transitions. Word has length 531 [2024-11-09 19:55:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:11,197 INFO L471 AbstractCegarLoop]: Abstraction has 82473 states and 159129 transitions. [2024-11-09 19:55:11,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 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 19:55:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 82473 states and 159129 transitions. [2024-11-09 19:55:11,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-09 19:55:11,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:11,222 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:11,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:55:11,223 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:11,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -665780717, now seen corresponding path program 1 times [2024-11-09 19:55:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406717890] [2024-11-09 19:55:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-09 19:55:12,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:12,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406717890] [2024-11-09 19:55:12,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406717890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:12,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:12,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259027976] [2024-11-09 19:55:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:12,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:12,094 INFO L87 Difference]: Start difference. First operand 82473 states and 159129 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 19:55:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:14,485 INFO L93 Difference]: Finished difference Result 162808 states and 314105 transitions. [2024-11-09 19:55:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 606 [2024-11-09 19:55:14,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:14,610 INFO L225 Difference]: With dead ends: 162808 [2024-11-09 19:55:14,611 INFO L226 Difference]: Without dead ends: 81188 [2024-11-09 19:55:14,659 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 19:55:14,660 INFO L432 NwaCegarLoop]: 990 mSDtfsCounter, 803 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:14,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1045 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:55:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81188 states. [2024-11-09 19:55:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81188 to 80759. [2024-11-09 19:55:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80759 states, 80758 states have (on average 1.9107333019638921) internal successors, (154307), 80758 states have internal predecessors, (154307), 0 states have call successors, (0), 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 19:55:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80759 states to 80759 states and 154307 transitions. [2024-11-09 19:55:16,284 INFO L78 Accepts]: Start accepts. Automaton has 80759 states and 154307 transitions. Word has length 606 [2024-11-09 19:55:16,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:16,286 INFO L471 AbstractCegarLoop]: Abstraction has 80759 states and 154307 transitions. [2024-11-09 19:55:16,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 19:55:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 80759 states and 154307 transitions. [2024-11-09 19:55:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-09 19:55:16,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:16,309 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:55:16,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:55:16,310 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:16,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1042936813, now seen corresponding path program 1 times [2024-11-09 19:55:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951709848] [2024-11-09 19:55:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-09 19:55:16,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:16,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951709848] [2024-11-09 19:55:16,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951709848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:16,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:16,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036955626] [2024-11-09 19:55:16,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:16,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:16,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:16,817 INFO L87 Difference]: Start difference. First operand 80759 states and 154307 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)