./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i -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 aa1b7e3020c9e54f93d45078f4a249ca3b737cc17c725ce83b71e2a4a5a42766 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:05:01,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:05:01,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:05:01,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:05:01,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:05:01,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:05:01,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:05:01,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:05:01,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:05:01,424 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:05:01,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:05:01,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:05:01,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:05:01,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:05:01,427 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:05:01,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:05:01,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:05:01,428 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:05:01,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:05:01,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:05:01,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:05:01,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:05:01,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:05:01,431 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:05:01,431 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:05:01,431 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:05:01,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:05:01,432 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:05:01,432 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:05:01,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:05:01,432 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:05:01,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:05:01,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:05:01,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:05:01,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:05:01,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:05:01,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:05:01,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:05:01,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:05:01,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:05:01,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:05:01,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:05:01,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa1b7e3020c9e54f93d45078f4a249ca3b737cc17c725ce83b71e2a4a5a42766 [2024-11-18 23:05:01,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:05:01,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:05:01,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:05:01,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:05:01,640 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:05:01,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i [2024-11-18 23:05:02,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:05:02,977 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:05:02,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i [2024-11-18 23:05:02,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3778749/36b73eb11f5346be9243343c47676ae6/FLAGfce8f7eef [2024-11-18 23:05:03,374 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3778749/36b73eb11f5346be9243343c47676ae6 [2024-11-18 23:05:03,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:05:03,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:05:03,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:05:03,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:05:03,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:05:03,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d3df3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03, skipping insertion in model container [2024-11-18 23:05:03,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,412 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:05:03,550 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/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i[915,928] [2024-11-18 23:05:03,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:05:03,632 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:05:03,644 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/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i[915,928] [2024-11-18 23:05:03,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:05:03,681 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:05:03,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03 WrapperNode [2024-11-18 23:05:03,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:05:03,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:05:03,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:05:03,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:05:03,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,731 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 181 [2024-11-18 23:05:03,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:05:03,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:05:03,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:05:03,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:05:03,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,773 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]. [2024-11-18 23:05:03,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:05:03,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:05:03,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:05:03,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:05:03,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (1/1) ... [2024-11-18 23:05:03,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:05:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:05:03,834 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) [2024-11-18 23:05:03,837 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 [2024-11-18 23:05:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:05:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:05:03,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:05:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:05:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:05:03,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:05:03,940 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:05:03,941 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:05:04,245 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-18 23:05:04,245 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:05:04,256 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:05:04,257 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:05:04,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:05:04 BoogieIcfgContainer [2024-11-18 23:05:04,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:05:04,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:05:04,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:05:04,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:05:04,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:05:03" (1/3) ... [2024-11-18 23:05:04,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaee5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:05:04, skipping insertion in model container [2024-11-18 23:05:04,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:03" (2/3) ... [2024-11-18 23:05:04,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaee5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:05:04, skipping insertion in model container [2024-11-18 23:05:04,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:05:04" (3/3) ... [2024-11-18 23:05:04,263 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-34.i [2024-11-18 23:05:04,274 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:05:04,275 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:05:04,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:05:04,333 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;@31781a9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:05:04,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:05:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-18 23:05:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 23:05:04,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:04,345 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:04,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:04,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1526986655, now seen corresponding path program 1 times [2024-11-18 23:05:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:04,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453002560] [2024-11-18 23:05:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:04,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-18 23:05:04,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:04,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453002560] [2024-11-18 23:05:04,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453002560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:05:04,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877614148] [2024-11-18 23:05:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:04,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:05:04,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:05:04,574 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) [2024-11-18 23:05:04,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:05:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:04,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:05:04,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:05:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-18 23:05:04,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:05:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877614148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:04,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:05:04,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:05:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706218749] [2024-11-18 23:05:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:04,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:05:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:05:04,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:05:04,764 INFO L87 Difference]: Start difference. First operand has 72 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 23:05:04,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:04,782 INFO L93 Difference]: Finished difference Result 141 states and 228 transitions. [2024-11-18 23:05:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:05:04,785 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2024-11-18 23:05:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:04,791 INFO L225 Difference]: With dead ends: 141 [2024-11-18 23:05:04,791 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 23:05:04,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:05:04,795 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:04,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:05:04,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 23:05:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-18 23:05:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-18 23:05:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 102 transitions. [2024-11-18 23:05:04,823 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 102 transitions. Word has length 94 [2024-11-18 23:05:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:04,823 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 102 transitions. [2024-11-18 23:05:04,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 23:05:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 102 transitions. [2024-11-18 23:05:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 23:05:04,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:04,826 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:04,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:05:05,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:05:05,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:05,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1654717725, now seen corresponding path program 1 times [2024-11-18 23:05:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206738761] [2024-11-18 23:05:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206738761] [2024-11-18 23:05:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206738761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:05,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:05,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:05:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269564719] [2024-11-18 23:05:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:05,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:05:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:05:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:05:05,381 INFO L87 Difference]: Start difference. First operand 68 states and 102 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:05,491 INFO L93 Difference]: Finished difference Result 229 states and 346 transitions. [2024-11-18 23:05:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:05:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2024-11-18 23:05:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:05,494 INFO L225 Difference]: With dead ends: 229 [2024-11-18 23:05:05,494 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 23:05:05,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:05:05,495 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 131 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:05,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 325 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:05:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 23:05:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 133. [2024-11-18 23:05:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 104 states have internal predecessors, (149), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 23:05:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 201 transitions. [2024-11-18 23:05:05,526 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 201 transitions. Word has length 94 [2024-11-18 23:05:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:05,527 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 201 transitions. [2024-11-18 23:05:05,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 201 transitions. [2024-11-18 23:05:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 23:05:05,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:05,530 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:05,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:05:05,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:05,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -616898898, now seen corresponding path program 1 times [2024-11-18 23:05:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741146259] [2024-11-18 23:05:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:05,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741146259] [2024-11-18 23:05:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741146259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:05,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:05:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912249715] [2024-11-18 23:05:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:05,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:05:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:05:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:05:05,750 INFO L87 Difference]: Start difference. First operand 133 states and 201 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:05,904 INFO L93 Difference]: Finished difference Result 388 states and 586 transitions. [2024-11-18 23:05:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:05:05,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2024-11-18 23:05:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:05,906 INFO L225 Difference]: With dead ends: 388 [2024-11-18 23:05:05,907 INFO L226 Difference]: Without dead ends: 258 [2024-11-18 23:05:05,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:05:05,910 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 126 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:05,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 333 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:05:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-18 23:05:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 137. [2024-11-18 23:05:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 108 states have internal predecessors, (153), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 23:05:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 205 transitions. [2024-11-18 23:05:05,931 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 205 transitions. Word has length 95 [2024-11-18 23:05:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:05,932 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 205 transitions. [2024-11-18 23:05:05,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 205 transitions. [2024-11-18 23:05:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 23:05:05,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:05,933 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:05,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:05:05,938 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:05,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1854308373, now seen corresponding path program 1 times [2024-11-18 23:05:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751979549] [2024-11-18 23:05:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751979549] [2024-11-18 23:05:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751979549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:25,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:25,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 23:05:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862416779] [2024-11-18 23:05:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:25,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:05:25,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:25,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:05:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:05:25,917 INFO L87 Difference]: Start difference. First operand 137 states and 205 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:28,543 INFO L93 Difference]: Finished difference Result 551 states and 802 transitions. [2024-11-18 23:05:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 23:05:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 23:05:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:28,550 INFO L225 Difference]: With dead ends: 551 [2024-11-18 23:05:28,550 INFO L226 Difference]: Without dead ends: 417 [2024-11-18 23:05:28,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:05:28,554 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 535 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:28,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 552 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:05:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-18 23:05:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 251. [2024-11-18 23:05:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 208 states have (on average 1.4182692307692308) internal successors, (295), 208 states have internal predecessors, (295), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 373 transitions. [2024-11-18 23:05:28,584 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 373 transitions. Word has length 96 [2024-11-18 23:05:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:28,584 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 373 transitions. [2024-11-18 23:05:28,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 373 transitions. [2024-11-18 23:05:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 23:05:28,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:28,588 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:28,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:05:28,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:28,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash -79301011, now seen corresponding path program 1 times [2024-11-18 23:05:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892529595] [2024-11-18 23:05:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:30,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892529595] [2024-11-18 23:05:30,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892529595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:30,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:30,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:05:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738853571] [2024-11-18 23:05:30,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:30,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:05:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:05:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:05:30,130 INFO L87 Difference]: Start difference. First operand 251 states and 373 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:30,958 INFO L93 Difference]: Finished difference Result 618 states and 919 transitions. [2024-11-18 23:05:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:05:30,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 23:05:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:30,961 INFO L225 Difference]: With dead ends: 618 [2024-11-18 23:05:30,961 INFO L226 Difference]: Without dead ends: 468 [2024-11-18 23:05:30,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:05:30,964 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 369 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:30,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 384 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:05:30,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-18 23:05:30,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 296. [2024-11-18 23:05:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 253 states have (on average 1.4150197628458498) internal successors, (358), 253 states have internal predecessors, (358), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 436 transitions. [2024-11-18 23:05:30,982 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 436 transitions. Word has length 96 [2024-11-18 23:05:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:30,982 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 436 transitions. [2024-11-18 23:05:30,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 436 transitions. [2024-11-18 23:05:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 23:05:30,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:30,984 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:30,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:05:30,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:30,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1174250003, now seen corresponding path program 1 times [2024-11-18 23:05:30,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:30,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728284730] [2024-11-18 23:05:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:34,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728284730] [2024-11-18 23:05:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728284730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:34,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:05:34,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743331052] [2024-11-18 23:05:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:34,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:05:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:05:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:05:34,500 INFO L87 Difference]: Start difference. First operand 296 states and 436 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:35,608 INFO L93 Difference]: Finished difference Result 614 states and 896 transitions. [2024-11-18 23:05:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:05:35,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 23:05:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:35,611 INFO L225 Difference]: With dead ends: 614 [2024-11-18 23:05:35,611 INFO L226 Difference]: Without dead ends: 466 [2024-11-18 23:05:35,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:05:35,612 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 373 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:35,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 463 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:05:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-18 23:05:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 356. [2024-11-18 23:05:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 313 states have (on average 1.4568690095846646) internal successors, (456), 313 states have internal predecessors, (456), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 534 transitions. [2024-11-18 23:05:35,636 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 534 transitions. Word has length 96 [2024-11-18 23:05:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:35,637 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 534 transitions. [2024-11-18 23:05:35,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 534 transitions. [2024-11-18 23:05:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 23:05:35,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:35,639 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:35,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:05:35,639 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:35,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1170525852, now seen corresponding path program 1 times [2024-11-18 23:05:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:35,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483628153] [2024-11-18 23:05:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:36,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:36,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483628153] [2024-11-18 23:05:36,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483628153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:36,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:36,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:05:36,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101742005] [2024-11-18 23:05:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:36,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:05:36,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:05:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:05:36,635 INFO L87 Difference]: Start difference. First operand 356 states and 534 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:36,912 INFO L93 Difference]: Finished difference Result 664 states and 988 transitions. [2024-11-18 23:05:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:05:36,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 23:05:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:36,915 INFO L225 Difference]: With dead ends: 664 [2024-11-18 23:05:36,915 INFO L226 Difference]: Without dead ends: 478 [2024-11-18 23:05:36,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:05:36,917 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 158 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:36,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 353 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:05:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-18 23:05:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 362. [2024-11-18 23:05:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 319 states have (on average 1.4420062695924765) internal successors, (460), 319 states have internal predecessors, (460), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 538 transitions. [2024-11-18 23:05:36,935 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 538 transitions. Word has length 96 [2024-11-18 23:05:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:36,935 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 538 transitions. [2024-11-18 23:05:36,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 538 transitions. [2024-11-18 23:05:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 23:05:36,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:36,937 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:36,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:05:36,937 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:36,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1429541673, now seen corresponding path program 1 times [2024-11-18 23:05:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103349434] [2024-11-18 23:05:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:37,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:37,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103349434] [2024-11-18 23:05:37,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103349434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:37,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:37,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:05:37,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654912397] [2024-11-18 23:05:37,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:37,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:05:37,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:37,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:05:37,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:05:37,092 INFO L87 Difference]: Start difference. First operand 362 states and 538 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:37,260 INFO L93 Difference]: Finished difference Result 582 states and 865 transitions. [2024-11-18 23:05:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:05:37,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 23:05:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:37,264 INFO L225 Difference]: With dead ends: 582 [2024-11-18 23:05:37,264 INFO L226 Difference]: Without dead ends: 354 [2024-11-18 23:05:37,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:05:37,266 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 82 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:37,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 233 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:05:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-18 23:05:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 324. [2024-11-18 23:05:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 281 states have (on average 1.402135231316726) internal successors, (394), 281 states have internal predecessors, (394), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 472 transitions. [2024-11-18 23:05:37,295 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 472 transitions. Word has length 96 [2024-11-18 23:05:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:37,296 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 472 transitions. [2024-11-18 23:05:37,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 472 transitions. [2024-11-18 23:05:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 23:05:37,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:37,297 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:37,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:05:37,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:37,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1915436771, now seen corresponding path program 1 times [2024-11-18 23:05:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55068680] [2024-11-18 23:05:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:37,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55068680] [2024-11-18 23:05:39,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55068680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:39,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:05:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301691816] [2024-11-18 23:05:39,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:39,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:05:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:05:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:05:39,238 INFO L87 Difference]: Start difference. First operand 324 states and 472 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:40,154 INFO L93 Difference]: Finished difference Result 658 states and 947 transitions. [2024-11-18 23:05:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 23:05:40,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2024-11-18 23:05:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:40,156 INFO L225 Difference]: With dead ends: 658 [2024-11-18 23:05:40,156 INFO L226 Difference]: Without dead ends: 524 [2024-11-18 23:05:40,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:05:40,157 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 330 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:40,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 545 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:05:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-18 23:05:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 360. [2024-11-18 23:05:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 315 states have (on average 1.3714285714285714) internal successors, (432), 315 states have internal predecessors, (432), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2024-11-18 23:05:40,175 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 97 [2024-11-18 23:05:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:40,175 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2024-11-18 23:05:40,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2024-11-18 23:05:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 23:05:40,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:40,177 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:40,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:05:40,177 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:40,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1080344919, now seen corresponding path program 1 times [2024-11-18 23:05:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583608411] [2024-11-18 23:05:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:40,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583608411] [2024-11-18 23:05:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583608411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:42,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:05:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199737237] [2024-11-18 23:05:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:42,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:05:42,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:42,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:05:42,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:05:42,220 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:44,206 INFO L93 Difference]: Finished difference Result 855 states and 1214 transitions. [2024-11-18 23:05:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 23:05:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2024-11-18 23:05:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:44,210 INFO L225 Difference]: With dead ends: 855 [2024-11-18 23:05:44,210 INFO L226 Difference]: Without dead ends: 637 [2024-11-18 23:05:44,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:05:44,211 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 376 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:44,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 435 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:05:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-18 23:05:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 443. [2024-11-18 23:05:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 398 states have (on average 1.3894472361809045) internal successors, (553), 398 states have internal predecessors, (553), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 631 transitions. [2024-11-18 23:05:44,235 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 631 transitions. Word has length 97 [2024-11-18 23:05:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:44,235 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 631 transitions. [2024-11-18 23:05:44,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 631 transitions. [2024-11-18 23:05:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 23:05:44,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:44,238 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:44,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:05:44,238 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:44,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1760403289, now seen corresponding path program 1 times [2024-11-18 23:05:44,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:44,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89507] [2024-11-18 23:05:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:44,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:49,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:49,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89507] [2024-11-18 23:05:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:49,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:49,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 23:05:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012579824] [2024-11-18 23:05:49,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:49,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:05:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:05:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:05:49,388 INFO L87 Difference]: Start difference. First operand 443 states and 631 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 23:05:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:50,901 INFO L93 Difference]: Finished difference Result 844 states and 1182 transitions. [2024-11-18 23:05:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:05:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2024-11-18 23:05:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:50,904 INFO L225 Difference]: With dead ends: 844 [2024-11-18 23:05:50,904 INFO L226 Difference]: Without dead ends: 553 [2024-11-18 23:05:50,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-18 23:05:50,905 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 276 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:50,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 774 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:05:50,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-18 23:05:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 443. [2024-11-18 23:05:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 398 states have (on average 1.3869346733668342) internal successors, (552), 398 states have internal predecessors, (552), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 630 transitions. [2024-11-18 23:05:50,929 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 630 transitions. Word has length 97 [2024-11-18 23:05:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:50,930 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 630 transitions. [2024-11-18 23:05:50,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 23:05:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 630 transitions. [2024-11-18 23:05:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 23:05:50,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:50,930 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:50,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:05:50,931 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:50,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash -661313962, now seen corresponding path program 1 times [2024-11-18 23:05:50,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:50,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612221737] [2024-11-18 23:05:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:50,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:05:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:05:57,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:05:57,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612221737] [2024-11-18 23:05:57,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612221737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:05:57,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:05:57,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 23:05:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177421948] [2024-11-18 23:05:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:05:57,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:05:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:05:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:05:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:05:57,556 INFO L87 Difference]: Start difference. First operand 443 states and 630 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:05:59,340 INFO L93 Difference]: Finished difference Result 799 states and 1126 transitions. [2024-11-18 23:05:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 23:05:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 23:05:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:05:59,342 INFO L225 Difference]: With dead ends: 799 [2024-11-18 23:05:59,343 INFO L226 Difference]: Without dead ends: 569 [2024-11-18 23:05:59,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2024-11-18 23:05:59,344 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 349 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:05:59,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 569 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:05:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-18 23:05:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 423. [2024-11-18 23:05:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 378 states have (on average 1.3915343915343916) internal successors, (526), 378 states have internal predecessors, (526), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:05:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 604 transitions. [2024-11-18 23:05:59,367 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 604 transitions. Word has length 98 [2024-11-18 23:05:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:05:59,370 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 604 transitions. [2024-11-18 23:05:59,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:05:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 604 transitions. [2024-11-18 23:05:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 23:05:59,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:05:59,371 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:05:59,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:05:59,372 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:05:59,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:05:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash 18744408, now seen corresponding path program 1 times [2024-11-18 23:05:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:05:59,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052225724] [2024-11-18 23:05:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:05:59,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:05:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:06:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:06:00,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:06:00,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052225724] [2024-11-18 23:06:00,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052225724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:06:00,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:06:00,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:06:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714167320] [2024-11-18 23:06:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:06:00,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:06:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:06:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:06:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:06:00,846 INFO L87 Difference]: Start difference. First operand 423 states and 604 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:06:01,268 INFO L93 Difference]: Finished difference Result 727 states and 1026 transitions. [2024-11-18 23:06:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:06:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 23:06:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:06:01,271 INFO L225 Difference]: With dead ends: 727 [2024-11-18 23:06:01,271 INFO L226 Difference]: Without dead ends: 493 [2024-11-18 23:06:01,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:06:01,271 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 237 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:06:01,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 348 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:06:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-18 23:06:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 413. [2024-11-18 23:06:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 368 states have (on average 1.391304347826087) internal successors, (512), 368 states have internal predecessors, (512), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:06:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 590 transitions. [2024-11-18 23:06:01,293 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 590 transitions. Word has length 98 [2024-11-18 23:06:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:06:01,293 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 590 transitions. [2024-11-18 23:06:01,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 590 transitions. [2024-11-18 23:06:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 23:06:01,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:06:01,294 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:06:01,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 23:06:01,295 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:06:01,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:06:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash 633811080, now seen corresponding path program 1 times [2024-11-18 23:06:01,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:06:01,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671913928] [2024-11-18 23:06:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:06:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:06:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:06:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:06:03,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:06:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671913928] [2024-11-18 23:06:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671913928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:06:03,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:06:03,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:06:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422033996] [2024-11-18 23:06:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:06:03,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:06:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:06:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:06:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:06:03,715 INFO L87 Difference]: Start difference. First operand 413 states and 590 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:06:07,397 INFO L93 Difference]: Finished difference Result 935 states and 1327 transitions. [2024-11-18 23:06:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 23:06:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 23:06:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:06:07,400 INFO L225 Difference]: With dead ends: 935 [2024-11-18 23:06:07,400 INFO L226 Difference]: Without dead ends: 715 [2024-11-18 23:06:07,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2024-11-18 23:06:07,402 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 522 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:06:07,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 417 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:06:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-18 23:06:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 429. [2024-11-18 23:06:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 384 states have (on average 1.3854166666666667) internal successors, (532), 384 states have internal predecessors, (532), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:06:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 610 transitions. [2024-11-18 23:06:07,428 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 610 transitions. Word has length 98 [2024-11-18 23:06:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:06:07,429 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 610 transitions. [2024-11-18 23:06:07,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 610 transitions. [2024-11-18 23:06:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 23:06:07,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:06:07,430 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:06:07,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:06:07,431 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:06:07,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:06:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1886148854, now seen corresponding path program 1 times [2024-11-18 23:06:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:06:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501582135] [2024-11-18 23:06:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:06:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:06:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:06:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:06:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:06:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501582135] [2024-11-18 23:06:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501582135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:06:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:06:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:06:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166031196] [2024-11-18 23:06:09,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:06:09,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:06:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:06:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:06:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:06:09,888 INFO L87 Difference]: Start difference. First operand 429 states and 610 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:06:13,301 INFO L93 Difference]: Finished difference Result 930 states and 1315 transitions. [2024-11-18 23:06:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 23:06:13,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 23:06:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:06:13,304 INFO L225 Difference]: With dead ends: 930 [2024-11-18 23:06:13,304 INFO L226 Difference]: Without dead ends: 698 [2024-11-18 23:06:13,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:06:13,305 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 455 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:06:13,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 445 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:06:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-18 23:06:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 451. [2024-11-18 23:06:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 406 states have (on average 1.3842364532019704) internal successors, (562), 406 states have internal predecessors, (562), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:06:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 640 transitions. [2024-11-18 23:06:13,331 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 640 transitions. Word has length 98 [2024-11-18 23:06:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:06:13,331 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 640 transitions. [2024-11-18 23:06:13,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 640 transitions. [2024-11-18 23:06:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 23:06:13,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:06:13,332 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:06:13,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 23:06:13,332 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:06:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:06:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1313869450, now seen corresponding path program 1 times [2024-11-18 23:06:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:06:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958796728] [2024-11-18 23:06:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:06:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:06:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:06:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:06:17,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:06:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958796728] [2024-11-18 23:06:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958796728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:06:17,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:06:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:06:17,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369632527] [2024-11-18 23:06:17,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:06:17,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:06:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:06:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:06:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:06:17,453 INFO L87 Difference]: Start difference. First operand 451 states and 640 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:06:18,646 INFO L93 Difference]: Finished difference Result 932 states and 1313 transitions. [2024-11-18 23:06:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:06:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 23:06:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:06:18,649 INFO L225 Difference]: With dead ends: 932 [2024-11-18 23:06:18,649 INFO L226 Difference]: Without dead ends: 613 [2024-11-18 23:06:18,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-18 23:06:18,650 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 309 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:06:18,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 409 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:06:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-18 23:06:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 459. [2024-11-18 23:06:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 414 states have (on average 1.3743961352657006) internal successors, (569), 414 states have internal predecessors, (569), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:06:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 647 transitions. [2024-11-18 23:06:18,670 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 647 transitions. Word has length 98 [2024-11-18 23:06:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:06:18,670 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 647 transitions. [2024-11-18 23:06:18,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 647 transitions. [2024-11-18 23:06:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 23:06:18,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:06:18,671 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:06:18,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 23:06:18,671 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:06:18,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:06:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1206090484, now seen corresponding path program 1 times [2024-11-18 23:06:18,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:06:18,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444616242] [2024-11-18 23:06:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:06:18,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:06:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:06:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 23:06:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:06:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444616242] [2024-11-18 23:06:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444616242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:06:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:06:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:06:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710612173] [2024-11-18 23:06:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:06:23,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:06:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:06:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:06:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:06:23,686 INFO L87 Difference]: Start difference. First operand 459 states and 647 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:06:25,904 INFO L93 Difference]: Finished difference Result 817 states and 1131 transitions. [2024-11-18 23:06:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:06:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 23:06:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:06:25,907 INFO L225 Difference]: With dead ends: 817 [2024-11-18 23:06:25,907 INFO L226 Difference]: Without dead ends: 573 [2024-11-18 23:06:25,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-18 23:06:25,908 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 285 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:06:25,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 514 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:06:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-18 23:06:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 467. [2024-11-18 23:06:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 422 states have (on average 1.367298578199052) internal successors, (577), 422 states have internal predecessors, (577), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:06:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 655 transitions. [2024-11-18 23:06:25,929 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 655 transitions. Word has length 98 [2024-11-18 23:06:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:06:25,930 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 655 transitions. [2024-11-18 23:06:25,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 23:06:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 655 transitions. [2024-11-18 23:06:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 23:06:25,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:06:25,931 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:06:25,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 23:06:25,931 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:06:25,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:06:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1152945629, now seen corresponding path program 1 times [2024-11-18 23:06:25,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:06:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270248515] [2024-11-18 23:06:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:06:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:06:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat