./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label18.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/Problem01_label18.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 8fcc4bb7cd8f204722096b247511c17cd0d430fd3f99523a22a5bf87d5e044f6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:05:00,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:05:00,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:05:00,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:05:00,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:05:00,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:05:00,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:05:00,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:05:00,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:05:00,739 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:05:00,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:05:00,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:05:00,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:05:00,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:05:00,741 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:05:00,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:05:00,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:05:00,741 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:05:00,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:05:00,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:05:00,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:05:00,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:05:00,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:05:00,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:05:00,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:05:00,745 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:05:00,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:05:00,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:05:00,745 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:05:00,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:05:00,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:05:00,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:05:00,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:05:00,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:05:00,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:05:00,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:05:00,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:05:00,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:05:00,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:05:00,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:05:00,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:05:00,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:05:00,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcc4bb7cd8f204722096b247511c17cd0d430fd3f99523a22a5bf87d5e044f6 [2024-11-16 03:05:00,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:05:00,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:05:00,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:05:00,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:05:00,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:05:00,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2024-11-16 03:05:02,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:05:02,505 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:05:02,506 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2024-11-16 03:05:02,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74fc760c/3324666a529c49a3990e18ced0066d8f/FLAGd9e34ed9b [2024-11-16 03:05:02,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74fc760c/3324666a529c49a3990e18ced0066d8f [2024-11-16 03:05:02,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:05:02,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:05:02,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:05:02,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:05:02,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:05:02,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:05:02" (1/1) ... [2024-11-16 03:05:02,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c4cd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:02, skipping insertion in model container [2024-11-16 03:05:02,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:05:02" (1/1) ... [2024-11-16 03:05:02,900 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:05:03,207 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/Problem01_label18.c[17985,17998] [2024-11-16 03:05:03,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:05:03,246 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:05:03,304 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/Problem01_label18.c[17985,17998] [2024-11-16 03:05:03,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:05:03,327 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:05:03,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03 WrapperNode [2024-11-16 03:05:03,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:05:03,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:05:03,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:05:03,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:05:03,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,385 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-11-16 03:05:03,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:05:03,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:05:03,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:05:03,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:05:03,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,416 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 03:05:03,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,430 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:05:03,441 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:05:03,441 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:05:03,441 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:05:03,442 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (1/1) ... [2024-11-16 03:05:03,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:05:03,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:05:03,474 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 03:05:03,477 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 03:05:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:05:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:05:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:05:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:05:03,602 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:05:03,604 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:05:04,348 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-16 03:05:04,348 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:05:04,368 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:05:04,369 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:05:04,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:05:04 BoogieIcfgContainer [2024-11-16 03:05:04,370 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:05:04,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:05:04,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:05:04,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:05:04,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:05:02" (1/3) ... [2024-11-16 03:05:04,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fe4de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:05:04, skipping insertion in model container [2024-11-16 03:05:04,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:05:03" (2/3) ... [2024-11-16 03:05:04,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fe4de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:05:04, skipping insertion in model container [2024-11-16 03:05:04,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:05:04" (3/3) ... [2024-11-16 03:05:04,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label18.c [2024-11-16 03:05:04,394 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:05:04,395 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:05:04,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:05:04,478 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;@87e52cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:05:04,478 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:05:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.6582914572864322) internal successors, (330), 200 states have internal predecessors, (330), 0 states have call successors, (0), 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 03:05:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-16 03:05:04,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:04,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:04,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:04,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1738332183, now seen corresponding path program 1 times [2024-11-16 03:05:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:04,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911539584] [2024-11-16 03:05:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:04,999 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 03:05:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:05,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911539584] [2024-11-16 03:05:05,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911539584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:05,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:05,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:05:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338085225] [2024-11-16 03:05:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:05,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:05,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:05:05,029 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.6582914572864322) internal successors, (330), 200 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:05,661 INFO L93 Difference]: Finished difference Result 534 states and 921 transitions. [2024-11-16 03:05:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-16 03:05:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:05,682 INFO L225 Difference]: With dead ends: 534 [2024-11-16 03:05:05,684 INFO L226 Difference]: Without dead ends: 269 [2024-11-16 03:05:05,689 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 03:05:05,691 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 82 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:05,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 77 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:05:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-16 03:05:05,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-16 03:05:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4067164179104477) internal successors, (377), 268 states have internal predecessors, (377), 0 states have call successors, (0), 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 03:05:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 377 transitions. [2024-11-16 03:05:05,764 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 377 transitions. Word has length 102 [2024-11-16 03:05:05,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:05,764 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 377 transitions. [2024-11-16 03:05:05,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:05,765 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 377 transitions. [2024-11-16 03:05:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 03:05:05,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:05,770 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:05,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:05:05,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:05,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1618489452, now seen corresponding path program 1 times [2024-11-16 03:05:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895835023] [2024-11-16 03:05:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:05:05,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895835023] [2024-11-16 03:05:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895835023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:05,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:05:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429962669] [2024-11-16 03:05:05,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:05,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:05:05,965 INFO L87 Difference]: Start difference. First operand 269 states and 377 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:06,280 INFO L93 Difference]: Finished difference Result 800 states and 1125 transitions. [2024-11-16 03:05:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-16 03:05:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:06,284 INFO L225 Difference]: With dead ends: 800 [2024-11-16 03:05:06,284 INFO L226 Difference]: Without dead ends: 533 [2024-11-16 03:05:06,285 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 03:05:06,286 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:06,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 35 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:05:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-16 03:05:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-16 03:05:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.3402255639097744) internal successors, (713), 532 states have internal predecessors, (713), 0 states have call successors, (0), 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 03:05:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 713 transitions. [2024-11-16 03:05:06,302 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 713 transitions. Word has length 107 [2024-11-16 03:05:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:06,302 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 713 transitions. [2024-11-16 03:05:06,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 713 transitions. [2024-11-16 03:05:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-16 03:05:06,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:06,308 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:06,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:05:06,309 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:06,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1203733343, now seen corresponding path program 1 times [2024-11-16 03:05:06,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:06,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620467028] [2024-11-16 03:05:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:06,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:05:06,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:06,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620467028] [2024-11-16 03:05:06,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620467028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:06,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:06,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:05:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762885084] [2024-11-16 03:05:06,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:06,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:06,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:06,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:05:06,448 INFO L87 Difference]: Start difference. First operand 533 states and 713 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 03:05:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:06,767 INFO L93 Difference]: Finished difference Result 1328 states and 1797 transitions. [2024-11-16 03:05:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:06,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 127 [2024-11-16 03:05:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:06,771 INFO L225 Difference]: With dead ends: 1328 [2024-11-16 03:05:06,771 INFO L226 Difference]: Without dead ends: 797 [2024-11-16 03:05:06,772 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 03:05:06,775 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 160 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:06,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 32 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:05:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2024-11-16 03:05:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 665. [2024-11-16 03:05:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 1.3463855421686748) internal successors, (894), 664 states have internal predecessors, (894), 0 states have call successors, (0), 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 03:05:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 894 transitions. [2024-11-16 03:05:06,795 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 894 transitions. Word has length 127 [2024-11-16 03:05:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:06,796 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 894 transitions. [2024-11-16 03:05:06,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 03:05:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 894 transitions. [2024-11-16 03:05:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-16 03:05:06,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:06,805 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:06,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:05:06,806 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:06,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash -119719573, now seen corresponding path program 1 times [2024-11-16 03:05:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136250316] [2024-11-16 03:05:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 03:05:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:06,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136250316] [2024-11-16 03:05:06,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136250316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:06,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:06,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:05:06,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608245751] [2024-11-16 03:05:06,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:06,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:06,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:06,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:05:06,952 INFO L87 Difference]: Start difference. First operand 665 states and 894 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 03:05:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:07,246 INFO L93 Difference]: Finished difference Result 1328 states and 1786 transitions. [2024-11-16 03:05:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 131 [2024-11-16 03:05:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:07,248 INFO L225 Difference]: With dead ends: 1328 [2024-11-16 03:05:07,248 INFO L226 Difference]: Without dead ends: 665 [2024-11-16 03:05:07,249 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 03:05:07,250 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 132 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:07,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 66 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:05:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-16 03:05:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2024-11-16 03:05:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 1.3373493975903614) internal successors, (888), 664 states have internal predecessors, (888), 0 states have call successors, (0), 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 03:05:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 888 transitions. [2024-11-16 03:05:07,259 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 888 transitions. Word has length 131 [2024-11-16 03:05:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:07,259 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 888 transitions. [2024-11-16 03:05:07,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 03:05:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 888 transitions. [2024-11-16 03:05:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-16 03:05:07,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:07,262 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:07,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:05:07,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:07,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1954245216, now seen corresponding path program 1 times [2024-11-16 03:05:07,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:07,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121724103] [2024-11-16 03:05:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:07,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 03:05:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121724103] [2024-11-16 03:05:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121724103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:07,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:07,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:05:07,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687506766] [2024-11-16 03:05:07,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:07,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:05:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:05:07,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:05:07,422 INFO L87 Difference]: Start difference. First operand 665 states and 888 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 03:05:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:07,929 INFO L93 Difference]: Finished difference Result 1856 states and 2428 transitions. [2024-11-16 03:05:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:05:07,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 136 [2024-11-16 03:05:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:07,932 INFO L225 Difference]: With dead ends: 1856 [2024-11-16 03:05:07,932 INFO L226 Difference]: Without dead ends: 1193 [2024-11-16 03:05:07,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:05:07,934 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 270 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:07,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 46 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:05:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2024-11-16 03:05:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1061. [2024-11-16 03:05:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.2622641509433963) internal successors, (1338), 1060 states have internal predecessors, (1338), 0 states have call successors, (0), 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 03:05:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1338 transitions. [2024-11-16 03:05:07,948 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1338 transitions. Word has length 136 [2024-11-16 03:05:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:07,948 INFO L471 AbstractCegarLoop]: Abstraction has 1061 states and 1338 transitions. [2024-11-16 03:05:07,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 03:05:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1338 transitions. [2024-11-16 03:05:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-16 03:05:07,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:07,950 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:07,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:05:07,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:07,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash 537932976, now seen corresponding path program 1 times [2024-11-16 03:05:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360492253] [2024-11-16 03:05:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-16 03:05:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360492253] [2024-11-16 03:05:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360492253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:05:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172374207] [2024-11-16 03:05:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:08,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:05:08,075 INFO L87 Difference]: Start difference. First operand 1061 states and 1338 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:08,474 INFO L93 Difference]: Finished difference Result 2780 states and 3478 transitions. [2024-11-16 03:05:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-16 03:05:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:08,479 INFO L225 Difference]: With dead ends: 2780 [2024-11-16 03:05:08,479 INFO L226 Difference]: Without dead ends: 1721 [2024-11-16 03:05:08,480 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 03:05:08,481 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 138 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:08,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 26 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:05:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-16 03:05:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1325. [2024-11-16 03:05:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.2462235649546827) internal successors, (1650), 1324 states have internal predecessors, (1650), 0 states have call successors, (0), 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 03:05:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1650 transitions. [2024-11-16 03:05:08,501 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1650 transitions. Word has length 146 [2024-11-16 03:05:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:08,502 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 1650 transitions. [2024-11-16 03:05:08,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1650 transitions. [2024-11-16 03:05:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 03:05:08,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:08,504 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-16 03:05:08,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:05:08,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:08,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash 490132397, now seen corresponding path program 1 times [2024-11-16 03:05:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:08,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514830772] [2024-11-16 03:05:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-16 03:05:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514830772] [2024-11-16 03:05:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514830772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:08,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:08,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:05:08,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155907958] [2024-11-16 03:05:08,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:08,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:05:08,759 INFO L87 Difference]: Start difference. First operand 1325 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 03:05:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:09,217 INFO L93 Difference]: Finished difference Result 2648 states and 3298 transitions. [2024-11-16 03:05:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 161 [2024-11-16 03:05:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:09,220 INFO L225 Difference]: With dead ends: 2648 [2024-11-16 03:05:09,220 INFO L226 Difference]: Without dead ends: 1325 [2024-11-16 03:05:09,221 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 03:05:09,222 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:09,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 66 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:05:09,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2024-11-16 03:05:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1325. [2024-11-16 03:05:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.2326283987915407) internal successors, (1632), 1324 states have internal predecessors, (1632), 0 states have call successors, (0), 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 03:05:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1632 transitions. [2024-11-16 03:05:09,240 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1632 transitions. Word has length 161 [2024-11-16 03:05:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:09,241 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 1632 transitions. [2024-11-16 03:05:09,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 03:05:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1632 transitions. [2024-11-16 03:05:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-16 03:05:09,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:09,244 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-16 03:05:09,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:05:09,244 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:09,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash -842619614, now seen corresponding path program 1 times [2024-11-16 03:05:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:09,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244761834] [2024-11-16 03:05:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 03:05:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244761834] [2024-11-16 03:05:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244761834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:09,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:05:09,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:05:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199519274] [2024-11-16 03:05:09,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:09,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:05:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:05:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:05:09,412 INFO L87 Difference]: Start difference. First operand 1325 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 03:05:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:09,896 INFO L93 Difference]: Finished difference Result 3440 states and 4162 transitions. [2024-11-16 03:05:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:05:09,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 166 [2024-11-16 03:05:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:09,901 INFO L225 Difference]: With dead ends: 3440 [2024-11-16 03:05:09,901 INFO L226 Difference]: Without dead ends: 1985 [2024-11-16 03:05:09,902 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 03:05:09,903 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 249 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:09,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 46 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:05:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2024-11-16 03:05:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1721. [2024-11-16 03:05:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.194767441860465) internal successors, (2055), 1720 states have internal predecessors, (2055), 0 states have call successors, (0), 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 03:05:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2055 transitions. [2024-11-16 03:05:09,941 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2055 transitions. Word has length 166 [2024-11-16 03:05:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:09,941 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2055 transitions. [2024-11-16 03:05:09,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 03:05:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2055 transitions. [2024-11-16 03:05:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-16 03:05:09,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:09,944 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:09,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:05:09,944 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:09,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1783903156, now seen corresponding path program 1 times [2024-11-16 03:05:09,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:09,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9491940] [2024-11-16 03:05:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:09,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 100 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 03:05:10,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9491940] [2024-11-16 03:05:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9491940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:05:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178398486] [2024-11-16 03:05:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:10,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:05:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:05:10,309 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 03:05:10,313 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 03:05:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:10,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:05:10,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:05:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-16 03:05:10,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:05:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178398486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:10,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:05:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 03:05:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945552648] [2024-11-16 03:05:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:10,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:10,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:10,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:05:10,649 INFO L87 Difference]: Start difference. First operand 1721 states and 2055 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:10,941 INFO L93 Difference]: Finished difference Result 2516 states and 2986 transitions. [2024-11-16 03:05:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-16 03:05:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:10,948 INFO L225 Difference]: With dead ends: 2516 [2024-11-16 03:05:10,948 INFO L226 Difference]: Without dead ends: 2513 [2024-11-16 03:05:10,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:05:10,950 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:10,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 34 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:05:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2024-11-16 03:05:10,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1721. [2024-11-16 03:05:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.194767441860465) internal successors, (2055), 1720 states have internal predecessors, (2055), 0 states have call successors, (0), 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 03:05:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2055 transitions. [2024-11-16 03:05:10,972 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2055 transitions. Word has length 183 [2024-11-16 03:05:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:10,973 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2055 transitions. [2024-11-16 03:05:10,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2055 transitions. [2024-11-16 03:05:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-16 03:05:10,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:10,976 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:10,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 03:05:11,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:05:11,177 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:11,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash 737050369, now seen corresponding path program 1 times [2024-11-16 03:05:11,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:11,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241494287] [2024-11-16 03:05:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 03:05:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241494287] [2024-11-16 03:05:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241494287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:05:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418292039] [2024-11-16 03:05:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:05:11,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:05:11,575 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 03:05:11,577 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 03:05:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:11,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:05:11,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:05:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 03:05:11,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:05:11,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418292039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:11,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:05:11,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 03:05:11,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661860329] [2024-11-16 03:05:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:11,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:11,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:05:11,907 INFO L87 Difference]: Start difference. First operand 1721 states and 2055 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:12,431 INFO L93 Difference]: Finished difference Result 3440 states and 4108 transitions. [2024-11-16 03:05:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:12,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-11-16 03:05:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:12,436 INFO L225 Difference]: With dead ends: 3440 [2024-11-16 03:05:12,436 INFO L226 Difference]: Without dead ends: 1721 [2024-11-16 03:05:12,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:05:12,439 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 39 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:12,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 197 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:05:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-16 03:05:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1589. [2024-11-16 03:05:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1588 states have (on average 1.1700251889168767) internal successors, (1858), 1588 states have internal predecessors, (1858), 0 states have call successors, (0), 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 03:05:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 1858 transitions. [2024-11-16 03:05:12,459 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 1858 transitions. Word has length 212 [2024-11-16 03:05:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:12,460 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 1858 transitions. [2024-11-16 03:05:12,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:05:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 1858 transitions. [2024-11-16 03:05:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-16 03:05:12,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:05:12,463 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 03:05:12,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:05:12,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 03:05:12,663 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:05:12,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:05:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1860943322, now seen corresponding path program 1 times [2024-11-16 03:05:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:05:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038385185] [2024-11-16 03:05:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:05:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 129 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:05:12,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:05:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038385185] [2024-11-16 03:05:12,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038385185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:05:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399902797] [2024-11-16 03:05:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:05:12,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:05:12,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:05:12,998 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 03:05:12,999 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 03:05:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:05:13,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:05:13,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:05:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 03:05:13,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:05:13,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399902797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:05:13,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:05:13,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 03:05:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968408466] [2024-11-16 03:05:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:05:13,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:05:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:05:13,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:05:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:05:13,186 INFO L87 Difference]: Start difference. First operand 1589 states and 1858 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 03:05:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:05:13,502 INFO L93 Difference]: Finished difference Result 3305 states and 3866 transitions. [2024-11-16 03:05:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:05:13,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 224 [2024-11-16 03:05:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:05:13,503 INFO L225 Difference]: With dead ends: 3305 [2024-11-16 03:05:13,503 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 03:05:13,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:05:13,505 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:05:13,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 180 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:05:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 03:05:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 03:05:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 03:05:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 03:05:13,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 224 [2024-11-16 03:05:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:05:13,506 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 03:05:13,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 03:05:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 03:05:13,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 03:05:13,510 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 03:05:13,529 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 03:05:13,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:05:13,714 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:05:13,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 03:05:13,949 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 03:05:13,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:05:13 BoogieIcfgContainer [2024-11-16 03:05:13,962 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 03:05:13,963 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 03:05:13,963 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 03:05:13,963 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 03:05:13,963 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:05:04" (3/4) ... [2024-11-16 03:05:13,965 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 03:05:13,975 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 03:05:13,976 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 03:05:13,976 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 03:05:13,977 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 03:05:14,095 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 03:05:14,096 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 03:05:14,096 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 03:05:14,096 INFO L158 Benchmark]: Toolchain (without parser) took 11244.54ms. Allocated memory was 159.4MB in the beginning and 350.2MB in the end (delta: 190.8MB). Free memory was 84.8MB in the beginning and 237.6MB in the end (delta: -152.8MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2024-11-16 03:05:14,096 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:05:14,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.37ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 84.4MB in the beginning and 189.0MB in the end (delta: -104.5MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2024-11-16 03:05:14,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.03ms. Allocated memory is still 232.8MB. Free memory was 189.0MB in the beginning and 183.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 03:05:14,097 INFO L158 Benchmark]: Boogie Preprocessor took 53.96ms. Allocated memory is still 232.8MB. Free memory was 183.7MB in the beginning and 178.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 03:05:14,097 INFO L158 Benchmark]: IcfgBuilder took 929.52ms. Allocated memory is still 232.8MB. Free memory was 178.5MB in the beginning and 93.5MB in the end (delta: 84.9MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2024-11-16 03:05:14,097 INFO L158 Benchmark]: TraceAbstraction took 9590.39ms. Allocated memory was 232.8MB in the beginning and 350.2MB in the end (delta: 117.4MB). Free memory was 92.5MB in the beginning and 250.2MB in the end (delta: -157.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:05:14,097 INFO L158 Benchmark]: Witness Printer took 132.80ms. Allocated memory is still 350.2MB. Free memory was 250.2MB in the beginning and 237.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 03:05:14,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.37ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 84.4MB in the beginning and 189.0MB in the end (delta: -104.5MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.03ms. Allocated memory is still 232.8MB. Free memory was 189.0MB in the beginning and 183.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.96ms. Allocated memory is still 232.8MB. Free memory was 183.7MB in the beginning and 178.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 929.52ms. Allocated memory is still 232.8MB. Free memory was 178.5MB in the beginning and 93.5MB in the end (delta: 84.9MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9590.39ms. Allocated memory was 232.8MB in the beginning and 350.2MB in the end (delta: 117.4MB). Free memory was 92.5MB in the beginning and 250.2MB in the end (delta: -157.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 132.80ms. Allocated memory is still 350.2MB. Free memory was 250.2MB in the beginning and 237.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 486]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 201 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1328 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1328 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 709 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4160 IncrementalHoareTripleChecker+Invalid, 4869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 709 mSolverCounterUnsat, 718 mSDtfsCounter, 4160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 652 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1721occurred in iteration=8, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 1848 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2314 NumberOfCodeBlocks, 2314 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2300 ConstructedInterpolants, 0 QuantifiedInterpolants, 7401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1141 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 1348/1427 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 03:05:14,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE