./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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_label03.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 89d9992650be4fcd4025f7007fb14b6b521ee1b4b929549cdf6651f6eed1ab75 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:15:57,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:15:57,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:15:57,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:15:57,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:15:57,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:15:57,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:15:57,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:15:57,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:15:57,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:15:57,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:15:57,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:15:57,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:15:57,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:15:57,398 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:15:57,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:15:57,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:15:57,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:15:57,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:15:57,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:15:57,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:15:57,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:15:57,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:15:57,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:15:57,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:15:57,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:15:57,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:15:57,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:15:57,401 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:15:57,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:15:57,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:15:57,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:15:57,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:15:57,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:15:57,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:15:57,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:15:57,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:15:57,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:15:57,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:15:57,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:15:57,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:15:57,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:15:57,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89d9992650be4fcd4025f7007fb14b6b521ee1b4b929549cdf6651f6eed1ab75 [2024-11-16 04:15:57,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:15:57,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:15:57,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:15:57,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:15:57,653 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:15:57,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label03.c [2024-11-16 04:15:58,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:15:59,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:15:59,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label03.c [2024-11-16 04:15:59,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de1d9738/76728ad18c3f4907b8dba6c905a96e93/FLAGbf0e816aa [2024-11-16 04:15:59,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de1d9738/76728ad18c3f4907b8dba6c905a96e93 [2024-11-16 04:15:59,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:15:59,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:15:59,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:15:59,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:15:59,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:15:59,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:15:59" (1/1) ... [2024-11-16 04:15:59,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9b2652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:59, skipping insertion in model container [2024-11-16 04:15:59,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:15:59" (1/1) ... [2024-11-16 04:15:59,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:15:59,539 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_label03.c[7281,7294] [2024-11-16 04:15:59,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:15:59,992 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:16:00,014 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_label03.c[7281,7294] [2024-11-16 04:16:00,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:16:00,279 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:16:00,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00 WrapperNode [2024-11-16 04:16:00,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:16:00,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:16:00,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:16:00,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:16:00,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,568 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:16:00,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:16:00,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:16:00,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:16:00,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:16:00,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,749 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]. [2024-11-16 04:16:00,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,844 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:16:00,900 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:16:00,900 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:16:00,900 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:16:00,901 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (1/1) ... [2024-11-16 04:16:00,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:16:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:00,932 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) [2024-11-16 04:16:00,934 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 [2024-11-16 04:16:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:16:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:16:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:16:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:16:01,024 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:16:01,026 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:16:03,524 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:16:03,652 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:16:03,653 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:16:03,682 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:16:03,683 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:16:03,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:03 BoogieIcfgContainer [2024-11-16 04:16:03,683 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:16:03,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:16:03,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:16:03,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:16:03,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:15:59" (1/3) ... [2024-11-16 04:16:03,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c094f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:03, skipping insertion in model container [2024-11-16 04:16:03,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:00" (2/3) ... [2024-11-16 04:16:03,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c094f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:03, skipping insertion in model container [2024-11-16 04:16:03,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:03" (3/3) ... [2024-11-16 04:16:03,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03.c [2024-11-16 04:16:03,711 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:16:03,711 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:16:03,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:16:03,779 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;@6cc49b91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:16:03,779 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:16:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 04:16:03,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:03,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:03,793 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:03,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash 296082608, now seen corresponding path program 1 times [2024-11-16 04:16:03,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:03,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413843679] [2024-11-16 04:16:03,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:03,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:04,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:04,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413843679] [2024-11-16 04:16:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413843679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:04,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:04,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396359284] [2024-11-16 04:16:04,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:04,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:04,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:04,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:04,170 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 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 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:06,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:06,375 INFO L93 Difference]: Finished difference Result 1686 states and 3080 transitions. [2024-11-16 04:16:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:06,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-16 04:16:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:06,392 INFO L225 Difference]: With dead ends: 1686 [2024-11-16 04:16:06,392 INFO L226 Difference]: Without dead ends: 1014 [2024-11-16 04:16:06,396 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 [2024-11-16 04:16:06,400 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 532 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:06,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 224 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:16:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-16 04:16:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 999. [2024-11-16 04:16:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.7334669338677355) internal successors, (1730), 998 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1730 transitions. [2024-11-16 04:16:06,476 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1730 transitions. Word has length 51 [2024-11-16 04:16:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:06,477 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1730 transitions. [2024-11-16 04:16:06,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1730 transitions. [2024-11-16 04:16:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 04:16:06,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:06,480 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:06,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:16:06,480 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:06,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1467197919, now seen corresponding path program 1 times [2024-11-16 04:16:06,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238189833] [2024-11-16 04:16:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:06,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:06,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238189833] [2024-11-16 04:16:06,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238189833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:06,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:06,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549604122] [2024-11-16 04:16:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:06,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:06,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:06,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:06,666 INFO L87 Difference]: Start difference. First operand 999 states and 1730 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:08,375 INFO L93 Difference]: Finished difference Result 2856 states and 4991 transitions. [2024-11-16 04:16:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:08,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-16 04:16:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:08,384 INFO L225 Difference]: With dead ends: 2856 [2024-11-16 04:16:08,385 INFO L226 Difference]: Without dead ends: 1859 [2024-11-16 04:16:08,388 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 [2024-11-16 04:16:08,389 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 395 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:08,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 592 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2024-11-16 04:16:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1859. [2024-11-16 04:16:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.4009687836383207) internal successors, (2603), 1858 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2603 transitions. [2024-11-16 04:16:08,432 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2603 transitions. Word has length 117 [2024-11-16 04:16:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:08,434 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 2603 transitions. [2024-11-16 04:16:08,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2603 transitions. [2024-11-16 04:16:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 04:16:08,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:08,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:08,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:16:08,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:08,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1774159022, now seen corresponding path program 1 times [2024-11-16 04:16:08,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:08,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067350368] [2024-11-16 04:16:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:08,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:08,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:08,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067350368] [2024-11-16 04:16:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067350368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:08,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:08,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024693572] [2024-11-16 04:16:08,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:08,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:08,642 INFO L87 Difference]: Start difference. First operand 1859 states and 2603 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) [2024-11-16 04:16:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:10,357 INFO L93 Difference]: Finished difference Result 5432 states and 7611 transitions. [2024-11-16 04:16:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:10,361 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 122 [2024-11-16 04:16:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:10,368 INFO L225 Difference]: With dead ends: 5432 [2024-11-16 04:16:10,369 INFO L226 Difference]: Without dead ends: 2720 [2024-11-16 04:16:10,372 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 [2024-11-16 04:16:10,373 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 458 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:10,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 879 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2024-11-16 04:16:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2717. [2024-11-16 04:16:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2716 states have (on average 1.2687776141384388) internal successors, (3446), 2716 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3446 transitions. [2024-11-16 04:16:10,411 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3446 transitions. Word has length 122 [2024-11-16 04:16:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:10,412 INFO L471 AbstractCegarLoop]: Abstraction has 2717 states and 3446 transitions. [2024-11-16 04:16:10,412 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) [2024-11-16 04:16:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3446 transitions. [2024-11-16 04:16:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-16 04:16:10,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:10,414 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:16:10,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:16:10,415 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:10,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash -654398169, now seen corresponding path program 1 times [2024-11-16 04:16:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920812506] [2024-11-16 04:16:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920812506] [2024-11-16 04:16:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920812506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344726023] [2024-11-16 04:16:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:10,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:10,598 INFO L87 Difference]: Start difference. First operand 2717 states and 3446 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:12,133 INFO L93 Difference]: Finished difference Result 7141 states and 9263 transitions. [2024-11-16 04:16:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2024-11-16 04:16:12,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:12,148 INFO L225 Difference]: With dead ends: 7141 [2024-11-16 04:16:12,148 INFO L226 Difference]: Without dead ends: 4426 [2024-11-16 04:16:12,154 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 [2024-11-16 04:16:12,155 INFO L432 NwaCegarLoop]: 731 mSDtfsCounter, 496 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:12,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 791 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2024-11-16 04:16:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4426. [2024-11-16 04:16:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 4425 states have (on average 1.241129943502825) internal successors, (5492), 4425 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 5492 transitions. [2024-11-16 04:16:12,235 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 5492 transitions. Word has length 205 [2024-11-16 04:16:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:12,236 INFO L471 AbstractCegarLoop]: Abstraction has 4426 states and 5492 transitions. [2024-11-16 04:16:12,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 5492 transitions. [2024-11-16 04:16:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-16 04:16:12,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:12,242 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:12,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:16:12,243 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:12,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1046115478, now seen corresponding path program 1 times [2024-11-16 04:16:12,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:12,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316389259] [2024-11-16 04:16:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:12,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 230 proven. 79 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:12,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316389259] [2024-11-16 04:16:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316389259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211332194] [2024-11-16 04:16:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:12,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:12,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:12,677 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) [2024-11-16 04:16:12,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:16:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:12,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:16:12,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 230 proven. 79 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:13,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211332194] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:13,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:16:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:16:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88903358] [2024-11-16 04:16:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:13,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:13,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:13,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:16:13,338 INFO L87 Difference]: Start difference. First operand 4426 states and 5492 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:15,771 INFO L93 Difference]: Finished difference Result 16562 states and 20563 transitions. [2024-11-16 04:16:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 283 [2024-11-16 04:16:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:15,800 INFO L225 Difference]: With dead ends: 16562 [2024-11-16 04:16:15,801 INFO L226 Difference]: Without dead ends: 11711 [2024-11-16 04:16:15,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:16:15,809 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 931 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:15,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 194 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:16:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11711 states. [2024-11-16 04:16:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11711 to 11707. [2024-11-16 04:16:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11707 states, 11706 states have (on average 1.1905005979839398) internal successors, (13936), 11706 states have internal predecessors, (13936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11707 states to 11707 states and 13936 transitions. [2024-11-16 04:16:15,968 INFO L78 Accepts]: Start accepts. Automaton has 11707 states and 13936 transitions. Word has length 283 [2024-11-16 04:16:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:15,970 INFO L471 AbstractCegarLoop]: Abstraction has 11707 states and 13936 transitions. [2024-11-16 04:16:15,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 11707 states and 13936 transitions. [2024-11-16 04:16:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-16 04:16:15,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:15,974 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:15,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:16:16,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:16,175 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:16,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1772559433, now seen corresponding path program 1 times [2024-11-16 04:16:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:16,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047785931] [2024-11-16 04:16:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:16,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047785931] [2024-11-16 04:16:16,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047785931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:16,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:16,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:16,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493541273] [2024-11-16 04:16:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:16,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:16,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:16,456 INFO L87 Difference]: Start difference. First operand 11707 states and 13936 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:17,997 INFO L93 Difference]: Finished difference Result 30695 states and 36862 transitions. [2024-11-16 04:16:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 286 [2024-11-16 04:16:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:18,043 INFO L225 Difference]: With dead ends: 30695 [2024-11-16 04:16:18,043 INFO L226 Difference]: Without dead ends: 18123 [2024-11-16 04:16:18,058 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 [2024-11-16 04:16:18,060 INFO L432 NwaCegarLoop]: 670 mSDtfsCounter, 483 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:18,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 715 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:16:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18123 states. [2024-11-16 04:16:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18123 to 16837. [2024-11-16 04:16:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16837 states, 16836 states have (on average 1.1987407935376575) internal successors, (20182), 16836 states have internal predecessors, (20182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16837 states to 16837 states and 20182 transitions. [2024-11-16 04:16:18,271 INFO L78 Accepts]: Start accepts. Automaton has 16837 states and 20182 transitions. Word has length 286 [2024-11-16 04:16:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:18,272 INFO L471 AbstractCegarLoop]: Abstraction has 16837 states and 20182 transitions. [2024-11-16 04:16:18,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 16837 states and 20182 transitions. [2024-11-16 04:16:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-16 04:16:18,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:18,275 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:18,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:16:18,275 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:18,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1465348484, now seen corresponding path program 1 times [2024-11-16 04:16:18,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:18,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053623617] [2024-11-16 04:16:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:18,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:18,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053623617] [2024-11-16 04:16:18,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053623617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:18,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884376308] [2024-11-16 04:16:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:18,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:18,572 INFO L87 Difference]: Start difference. First operand 16837 states and 20182 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:20,090 INFO L93 Difference]: Finished difference Result 43923 states and 52673 transitions. [2024-11-16 04:16:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 309 [2024-11-16 04:16:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:20,133 INFO L225 Difference]: With dead ends: 43923 [2024-11-16 04:16:20,134 INFO L226 Difference]: Without dead ends: 26655 [2024-11-16 04:16:20,153 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 [2024-11-16 04:16:20,154 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 446 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:20,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 323 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:16:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26655 states. [2024-11-16 04:16:20,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26655 to 24931. [2024-11-16 04:16:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24931 states, 24930 states have (on average 1.1861211391897313) internal successors, (29570), 24930 states have internal predecessors, (29570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24931 states to 24931 states and 29570 transitions. [2024-11-16 04:16:20,533 INFO L78 Accepts]: Start accepts. Automaton has 24931 states and 29570 transitions. Word has length 309 [2024-11-16 04:16:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:20,534 INFO L471 AbstractCegarLoop]: Abstraction has 24931 states and 29570 transitions. [2024-11-16 04:16:20,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 24931 states and 29570 transitions. [2024-11-16 04:16:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-16 04:16:20,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:20,539 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:20,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:16:20,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:20,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 205731615, now seen corresponding path program 1 times [2024-11-16 04:16:20,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:20,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877532333] [2024-11-16 04:16:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:20,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 298 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:20,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877532333] [2024-11-16 04:16:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877532333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867586172] [2024-11-16 04:16:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:20,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:20,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:20,948 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) [2024-11-16 04:16:20,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:16:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:21,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:16:21,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 240 proven. 83 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:21,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 240 proven. 83 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:22,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867586172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:16:22,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:16:22,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-16 04:16:22,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147117949] [2024-11-16 04:16:22,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:16:22,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 04:16:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 04:16:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:16:22,289 INFO L87 Difference]: Start difference. First operand 24931 states and 29570 transitions. Second operand has 9 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:32,801 INFO L93 Difference]: Finished difference Result 118697 states and 138298 transitions. [2024-11-16 04:16:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 04:16:32,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2024-11-16 04:16:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:32,912 INFO L225 Difference]: With dead ends: 118697 [2024-11-16 04:16:32,912 INFO L226 Difference]: Without dead ends: 88651 [2024-11-16 04:16:32,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2024-11-16 04:16:32,934 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 9571 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 12433 mSolverCounterSat, 2972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9571 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 15405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2972 IncrementalHoareTripleChecker+Valid, 12433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:32,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9571 Valid, 607 Invalid, 15405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2972 Valid, 12433 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-16 04:16:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88651 states. [2024-11-16 04:16:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88651 to 82141. [2024-11-16 04:16:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82141 states, 82140 states have (on average 1.1481981981981981) internal successors, (94313), 82140 states have internal predecessors, (94313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82141 states to 82141 states and 94313 transitions. [2024-11-16 04:16:34,118 INFO L78 Accepts]: Start accepts. Automaton has 82141 states and 94313 transitions. Word has length 314 [2024-11-16 04:16:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:34,120 INFO L471 AbstractCegarLoop]: Abstraction has 82141 states and 94313 transitions. [2024-11-16 04:16:34,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 82141 states and 94313 transitions. [2024-11-16 04:16:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-16 04:16:34,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:34,128 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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] [2024-11-16 04:16:34,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 04:16:34,329 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,SelfDestructingSolverStorable7 [2024-11-16 04:16:34,329 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:34,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1912050456, now seen corresponding path program 1 times [2024-11-16 04:16:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:34,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329576940] [2024-11-16 04:16:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 529 proven. 80 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329576940] [2024-11-16 04:16:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329576940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215236] [2024-11-16 04:16:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:35,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:35,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:16:35,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:16:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:35,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 04:16:35,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 609 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 04:16:35,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:16:35,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:35,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:16:35,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-16 04:16:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27034913] [2024-11-16 04:16:35,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:35,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:16:35,668 INFO L87 Difference]: Start difference. First operand 82141 states and 94313 transitions. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:37,731 INFO L93 Difference]: Finished difference Result 167262 states and 191724 transitions. [2024-11-16 04:16:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 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 397 [2024-11-16 04:16:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:37,827 INFO L225 Difference]: With dead ends: 167262 [2024-11-16 04:16:37,827 INFO L226 Difference]: Without dead ends: 85123 [2024-11-16 04:16:37,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:16:37,872 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 842 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:37,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 370 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:16:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85123 states. [2024-11-16 04:16:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85123 to 83845. [2024-11-16 04:16:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83845 states, 83844 states have (on average 1.1456633748389866) internal successors, (96057), 83844 states have internal predecessors, (96057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83845 states to 83845 states and 96057 transitions. [2024-11-16 04:16:38,951 INFO L78 Accepts]: Start accepts. Automaton has 83845 states and 96057 transitions. Word has length 397 [2024-11-16 04:16:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:38,952 INFO L471 AbstractCegarLoop]: Abstraction has 83845 states and 96057 transitions. [2024-11-16 04:16:38,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 83845 states and 96057 transitions. [2024-11-16 04:16:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-16 04:16:38,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:38,958 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:38,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:16:39,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:39,159 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:39,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1171507112, now seen corresponding path program 1 times [2024-11-16 04:16:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94760798] [2024-11-16 04:16:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-16 04:16:39,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:39,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94760798] [2024-11-16 04:16:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94760798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945586309] [2024-11-16 04:16:39,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:39,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:39,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:39,550 INFO L87 Difference]: Start difference. First operand 83845 states and 96057 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:41,350 INFO L93 Difference]: Finished difference Result 179199 states and 205664 transitions. [2024-11-16 04:16:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 458 [2024-11-16 04:16:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:41,468 INFO L225 Difference]: With dead ends: 179199 [2024-11-16 04:16:41,468 INFO L226 Difference]: Without dead ends: 95356 [2024-11-16 04:16:41,497 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 [2024-11-16 04:16:41,498 INFO L432 NwaCegarLoop]: 687 mSDtfsCounter, 498 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:41,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 740 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:16:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95356 states. [2024-11-16 04:16:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95356 to 92794. [2024-11-16 04:16:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92794 states, 92793 states have (on average 1.1422844395590184) internal successors, (105996), 92793 states have internal predecessors, (105996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92794 states to 92794 states and 105996 transitions. [2024-11-16 04:16:42,930 INFO L78 Accepts]: Start accepts. Automaton has 92794 states and 105996 transitions. Word has length 458 [2024-11-16 04:16:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:42,931 INFO L471 AbstractCegarLoop]: Abstraction has 92794 states and 105996 transitions. [2024-11-16 04:16:42,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 92794 states and 105996 transitions. [2024-11-16 04:16:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-16 04:16:42,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:42,938 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:42,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:16:42,939 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:42,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1969514927, now seen corresponding path program 1 times [2024-11-16 04:16:42,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:42,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277803526] [2024-11-16 04:16:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-16 04:16:43,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277803526] [2024-11-16 04:16:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277803526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:43,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:43,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:43,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089229736] [2024-11-16 04:16:43,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:43,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:43,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:43,507 INFO L87 Difference]: Start difference. First operand 92794 states and 105996 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:45,525 INFO L93 Difference]: Finished difference Result 206133 states and 235073 transitions. [2024-11-16 04:16:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:45,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 484 [2024-11-16 04:16:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:45,663 INFO L225 Difference]: With dead ends: 206133 [2024-11-16 04:16:45,663 INFO L226 Difference]: Without dead ends: 112910 [2024-11-16 04:16:45,699 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 [2024-11-16 04:16:45,700 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 478 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:45,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 241 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:16:45,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112910 states. [2024-11-16 04:16:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112910 to 97063. [2024-11-16 04:16:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97063 states, 97062 states have (on average 1.1366240135171333) internal successors, (110323), 97062 states have internal predecessors, (110323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97063 states to 97063 states and 110323 transitions. [2024-11-16 04:16:47,065 INFO L78 Accepts]: Start accepts. Automaton has 97063 states and 110323 transitions. Word has length 484 [2024-11-16 04:16:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:47,066 INFO L471 AbstractCegarLoop]: Abstraction has 97063 states and 110323 transitions. [2024-11-16 04:16:47,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 97063 states and 110323 transitions. [2024-11-16 04:16:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-16 04:16:47,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:47,073 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:47,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:16:47,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:47,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1384029981, now seen corresponding path program 1 times [2024-11-16 04:16:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322330278] [2024-11-16 04:16:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2024-11-16 04:16:47,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322330278] [2024-11-16 04:16:47,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322330278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:47,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:47,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47529834] [2024-11-16 04:16:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:47,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:47,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:47,528 INFO L87 Difference]: Start difference. First operand 97063 states and 110323 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:49,065 INFO L93 Difference]: Finished difference Result 191985 states and 218218 transitions. [2024-11-16 04:16:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2024-11-16 04:16:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:49,173 INFO L225 Difference]: With dead ends: 191985 [2024-11-16 04:16:49,173 INFO L226 Difference]: Without dead ends: 94923 [2024-11-16 04:16:49,214 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 [2024-11-16 04:16:49,215 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 459 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:49,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 729 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 04:16:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94923 states. [2024-11-16 04:16:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94923 to 94921. [2024-11-16 04:16:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94921 states, 94920 states have (on average 1.1038242730720607) internal successors, (104775), 94920 states have internal predecessors, (104775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94921 states to 94921 states and 104775 transitions. [2024-11-16 04:16:50,395 INFO L78 Accepts]: Start accepts. Automaton has 94921 states and 104775 transitions. Word has length 513 [2024-11-16 04:16:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:50,396 INFO L471 AbstractCegarLoop]: Abstraction has 94921 states and 104775 transitions. [2024-11-16 04:16:50,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 94921 states and 104775 transitions. [2024-11-16 04:16:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-16 04:16:50,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:50,406 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2024-11-16 04:16:50,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:16:50,406 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:50,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1022975679, now seen corresponding path program 1 times [2024-11-16 04:16:50,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824253141] [2024-11-16 04:16:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-16 04:16:51,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:51,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824253141] [2024-11-16 04:16:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824253141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:51,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:51,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:16:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736723044] [2024-11-16 04:16:51,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:51,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:51,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:51,084 INFO L87 Difference]: Start difference. First operand 94921 states and 104775 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:53,629 INFO L93 Difference]: Finished difference Result 250489 states and 275534 transitions. [2024-11-16 04:16:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:53,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 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 557 [2024-11-16 04:16:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:53,791 INFO L225 Difference]: With dead ends: 250489 [2024-11-16 04:16:53,791 INFO L226 Difference]: Without dead ends: 155570 [2024-11-16 04:16:54,051 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 [2024-11-16 04:16:54,052 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 797 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:54,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 214 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:16:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155570 states. [2024-11-16 04:16:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155570 to 132519. [2024-11-16 04:16:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132519 states, 132518 states have (on average 1.101223984666234) internal successors, (145932), 132518 states have internal predecessors, (145932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132519 states to 132519 states and 145932 transitions. [2024-11-16 04:16:56,073 INFO L78 Accepts]: Start accepts. Automaton has 132519 states and 145932 transitions. Word has length 557 [2024-11-16 04:16:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:56,077 INFO L471 AbstractCegarLoop]: Abstraction has 132519 states and 145932 transitions. [2024-11-16 04:16:56,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 132519 states and 145932 transitions. [2024-11-16 04:16:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2024-11-16 04:16:56,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:56,096 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2024-11-16 04:16:56,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:16:56,100 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:56,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1705961414, now seen corresponding path program 1 times [2024-11-16 04:16:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022831336] [2024-11-16 04:16:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 790 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-16 04:16:56,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:56,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022831336] [2024-11-16 04:16:56,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022831336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:56,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:56,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235183112] [2024-11-16 04:16:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:56,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:56,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:56,440 INFO L87 Difference]: Start difference. First operand 132519 states and 145932 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:58,410 INFO L93 Difference]: Finished difference Result 287661 states and 317319 transitions. [2024-11-16 04:16:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 559 [2024-11-16 04:16:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:58,597 INFO L225 Difference]: With dead ends: 287661 [2024-11-16 04:16:58,597 INFO L226 Difference]: Without dead ends: 154718 [2024-11-16 04:16:58,671 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 [2024-11-16 04:16:58,672 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 319 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:58,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 345 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:16:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154718 states. [2024-11-16 04:17:00,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154718 to 148293. [2024-11-16 04:17:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148293 states, 148292 states have (on average 1.0838885442235588) internal successors, (160732), 148292 states have internal predecessors, (160732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148293 states to 148293 states and 160732 transitions. [2024-11-16 04:17:00,918 INFO L78 Accepts]: Start accepts. Automaton has 148293 states and 160732 transitions. Word has length 559 [2024-11-16 04:17:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:00,919 INFO L471 AbstractCegarLoop]: Abstraction has 148293 states and 160732 transitions. [2024-11-16 04:17:00,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 148293 states and 160732 transitions. [2024-11-16 04:17:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-11-16 04:17:00,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:00,928 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:00,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:17:00,929 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:00,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 697435473, now seen corresponding path program 1 times [2024-11-16 04:17:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379596498] [2024-11-16 04:17:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-16 04:17:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379596498] [2024-11-16 04:17:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379596498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563347955] [2024-11-16 04:17:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:01,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:01,751 INFO L87 Difference]: Start difference. First operand 148293 states and 160732 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:03,732 INFO L93 Difference]: Finished difference Result 301712 states and 326686 transitions. [2024-11-16 04:17:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 584 [2024-11-16 04:17:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:03,908 INFO L225 Difference]: With dead ends: 301712 [2024-11-16 04:17:03,908 INFO L226 Difference]: Without dead ends: 152995 [2024-11-16 04:17:03,965 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 [2024-11-16 04:17:03,966 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 357 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:03,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 370 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:17:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152995 states. [2024-11-16 04:17:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152995 to 150819. [2024-11-16 04:17:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150819 states, 150818 states have (on average 1.073830709862218) internal successors, (161953), 150818 states have internal predecessors, (161953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150819 states to 150819 states and 161953 transitions. [2024-11-16 04:17:06,342 INFO L78 Accepts]: Start accepts. Automaton has 150819 states and 161953 transitions. Word has length 584 [2024-11-16 04:17:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:06,342 INFO L471 AbstractCegarLoop]: Abstraction has 150819 states and 161953 transitions. [2024-11-16 04:17:06,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 150819 states and 161953 transitions. [2024-11-16 04:17:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-16 04:17:06,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:06,352 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:06,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:17:06,353 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:06,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:06,353 INFO L85 PathProgramCache]: Analyzing trace with hash 690162852, now seen corresponding path program 1 times [2024-11-16 04:17:06,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:06,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764769620] [2024-11-16 04:17:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 923 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2024-11-16 04:17:06,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764769620] [2024-11-16 04:17:06,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764769620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:06,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440765720] [2024-11-16 04:17:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:06,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:06,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:06,648 INFO L87 Difference]: Start difference. First operand 150819 states and 161953 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:08,554 INFO L93 Difference]: Finished difference Result 315745 states and 338679 transitions. [2024-11-16 04:17:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 597 [2024-11-16 04:17:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:08,739 INFO L225 Difference]: With dead ends: 315745 [2024-11-16 04:17:08,739 INFO L226 Difference]: Without dead ends: 164927 [2024-11-16 04:17:08,828 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 [2024-11-16 04:17:08,828 INFO L432 NwaCegarLoop]: 770 mSDtfsCounter, 325 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:08,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 836 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:17:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164927 states. [2024-11-16 04:17:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164927 to 158945. [2024-11-16 04:17:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158945 states, 158944 states have (on average 1.0683888665190255) internal successors, (169814), 158944 states have internal predecessors, (169814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158945 states to 158945 states and 169814 transitions. [2024-11-16 04:17:11,299 INFO L78 Accepts]: Start accepts. Automaton has 158945 states and 169814 transitions. Word has length 597 [2024-11-16 04:17:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:11,300 INFO L471 AbstractCegarLoop]: Abstraction has 158945 states and 169814 transitions. [2024-11-16 04:17:11,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 158945 states and 169814 transitions. [2024-11-16 04:17:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2024-11-16 04:17:11,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:11,315 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:11,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:17:11,315 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:11,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash 967603189, now seen corresponding path program 1 times [2024-11-16 04:17:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:11,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625008745] [2024-11-16 04:17:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-16 04:17:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:12,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625008745] [2024-11-16 04:17:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625008745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:12,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595333235] [2024-11-16 04:17:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:12,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:12,091 INFO L87 Difference]: Start difference. First operand 158945 states and 169814 transitions. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:14,102 INFO L93 Difference]: Finished difference Result 329429 states and 351972 transitions. [2024-11-16 04:17:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:14,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 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 617 [2024-11-16 04:17:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:14,285 INFO L225 Difference]: With dead ends: 329429 [2024-11-16 04:17:14,285 INFO L226 Difference]: Without dead ends: 170057 [2024-11-16 04:17:14,350 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 [2024-11-16 04:17:14,351 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 464 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:14,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 216 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:17:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170057 states. [2024-11-16 04:17:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170057 to 160225. [2024-11-16 04:17:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160225 states, 160224 states have (on average 1.0676240762931895) internal successors, (171059), 160224 states have internal predecessors, (171059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)