./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_25-while_file-22.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 211bead296e124e614440acc5c0a2ec479c384857f4a7a38003b7b558015a0bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:49:02,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:49:02,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:49:02,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:49:02,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:49:02,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:49:02,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:49:02,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:49:02,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:49:02,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:49:02,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:49:02,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:49:02,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:49:02,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:49:02,170 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:49:02,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:49:02,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:49:02,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:49:02,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:49:02,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:49:02,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:49:02,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:49:02,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:49:02,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:49:02,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:49:02,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:49:02,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:49:02,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:49:02,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:49:02,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:49:02,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:49:02,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:49:02,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:49:02,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:49:02,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:49:02,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:49:02,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:49:02,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:49:02,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:49:02,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:49:02,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:49:02,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:49:02,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211bead296e124e614440acc5c0a2ec479c384857f4a7a38003b7b558015a0bc [2024-11-22 10:49:02,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:49:02,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:49:02,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:49:02,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:49:02,429 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:49:02,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-22.i [2024-11-22 10:49:03,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:49:03,882 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:49:03,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-22.i [2024-11-22 10:49:03,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d91ec863/17cc18fa1f2949bdbc7ec6e206c5309d/FLAG4baf82a27 [2024-11-22 10:49:03,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d91ec863/17cc18fa1f2949bdbc7ec6e206c5309d [2024-11-22 10:49:03,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:49:03,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:49:03,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:49:03,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:49:03,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:49:03,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:49:03" (1/1) ... [2024-11-22 10:49:03,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58233b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:03, skipping insertion in model container [2024-11-22 10:49:03,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:49:03" (1/1) ... [2024-11-22 10:49:03,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:49:04,093 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_25-while_file-22.i[915,928] [2024-11-22 10:49:04,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:49:04,150 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:49:04,162 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_25-while_file-22.i[915,928] [2024-11-22 10:49:04,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:49:04,199 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:49:04,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04 WrapperNode [2024-11-22 10:49:04,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:49:04,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:49:04,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:49:04,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:49:04,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,235 INFO L138 Inliner]: procedures = 26, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2024-11-22 10:49:04,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:49:04,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:49:04,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:49:04,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:49:04,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,264 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]. [2024-11-22 10:49:04,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:49:04,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:49:04,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:49:04,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:49:04,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (1/1) ... [2024-11-22 10:49:04,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:49:04,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:04,306 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) [2024-11-22 10:49:04,308 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 [2024-11-22 10:49:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:49:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:49:04,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:49:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:49:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:49:04,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:49:04,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:49:04,391 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:49:04,619 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-22 10:49:04,619 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:49:04,632 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:49:04,633 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:49:04,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:49:04 BoogieIcfgContainer [2024-11-22 10:49:04,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:49:04,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:49:04,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:49:04,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:49:04,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:49:03" (1/3) ... [2024-11-22 10:49:04,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb42575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:49:04, skipping insertion in model container [2024-11-22 10:49:04,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:49:04" (2/3) ... [2024-11-22 10:49:04,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb42575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:49:04, skipping insertion in model container [2024-11-22 10:49:04,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:49:04" (3/3) ... [2024-11-22 10:49:04,641 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-22.i [2024-11-22 10:49:04,655 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:49:04,656 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:49:04,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:49:04,717 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;@200252f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:49:04,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:49:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 10:49:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-22 10:49:04,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:04,729 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:04,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:04,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 816987956, now seen corresponding path program 1 times [2024-11-22 10:49:04,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:04,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196530710] [2024-11-22 10:49:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-22 10:49:04,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:04,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196530710] [2024-11-22 10:49:04,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196530710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:04,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955573319] [2024-11-22 10:49:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:04,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:04,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:04,993 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) [2024-11-22 10:49:04,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 10:49:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:05,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:49:05,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-22 10:49:05,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:49:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955573319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:05,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:49:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:49:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537909826] [2024-11-22 10:49:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:05,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:49:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:49:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:49:05,148 INFO L87 Difference]: Start difference. First operand has 48 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 10:49:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:05,170 INFO L93 Difference]: Finished difference Result 87 states and 135 transitions. [2024-11-22 10:49:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:49:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-11-22 10:49:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:05,178 INFO L225 Difference]: With dead ends: 87 [2024-11-22 10:49:05,178 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 10:49:05,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:49:05,184 INFO L432 NwaCegarLoop]: 56 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, 56 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 [2024-11-22 10:49:05,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:49:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 10:49:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-22 10:49:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 10:49:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2024-11-22 10:49:05,217 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 58 [2024-11-22 10:49:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:05,218 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2024-11-22 10:49:05,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 10:49:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2024-11-22 10:49:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-22 10:49:05,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:05,221 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:05,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 10:49:05,422 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 [2024-11-22 10:49:05,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:05,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1731713732, now seen corresponding path program 1 times [2024-11-22 10:49:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512279638] [2024-11-22 10:49:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:05,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512279638] [2024-11-22 10:49:05,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512279638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:05,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:05,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:49:05,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090798033] [2024-11-22 10:49:05,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:05,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:49:05,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:05,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:49:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:49:05,996 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:06,198 INFO L93 Difference]: Finished difference Result 141 states and 189 transitions. [2024-11-22 10:49:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:49:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2024-11-22 10:49:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:06,200 INFO L225 Difference]: With dead ends: 141 [2024-11-22 10:49:06,200 INFO L226 Difference]: Without dead ends: 102 [2024-11-22 10:49:06,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:49:06,201 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 84 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:06,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 185 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-22 10:49:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2024-11-22 10:49:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-22 10:49:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2024-11-22 10:49:06,225 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 58 [2024-11-22 10:49:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:06,225 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2024-11-22 10:49:06,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2024-11-22 10:49:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 10:49:06,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:06,228 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:06,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:49:06,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:06,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1626275922, now seen corresponding path program 1 times [2024-11-22 10:49:06,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021246784] [2024-11-22 10:49:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021246784] [2024-11-22 10:49:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021246784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:06,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:49:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153732930] [2024-11-22 10:49:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:06,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:49:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:49:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:49:06,534 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:06,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:06,713 INFO L93 Difference]: Finished difference Result 212 states and 281 transitions. [2024-11-22 10:49:06,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:49:06,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2024-11-22 10:49:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:06,715 INFO L225 Difference]: With dead ends: 212 [2024-11-22 10:49:06,717 INFO L226 Difference]: Without dead ends: 173 [2024-11-22 10:49:06,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:49:06,719 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:06,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 221 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-22 10:49:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 117. [2024-11-22 10:49:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 10:49:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 159 transitions. [2024-11-22 10:49:06,738 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 159 transitions. Word has length 59 [2024-11-22 10:49:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:06,739 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 159 transitions. [2024-11-22 10:49:06,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 159 transitions. [2024-11-22 10:49:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 10:49:06,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:06,745 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:06,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:49:06,745 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:06,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2081885360, now seen corresponding path program 1 times [2024-11-22 10:49:06,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:06,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335548788] [2024-11-22 10:49:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:06,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335548788] [2024-11-22 10:49:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335548788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:06,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:06,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:49:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441622444] [2024-11-22 10:49:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:06,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:49:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:49:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:06,793 INFO L87 Difference]: Start difference. First operand 117 states and 159 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:06,818 INFO L93 Difference]: Finished difference Result 186 states and 250 transitions. [2024-11-22 10:49:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:49:06,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2024-11-22 10:49:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:06,820 INFO L225 Difference]: With dead ends: 186 [2024-11-22 10:49:06,820 INFO L226 Difference]: Without dead ends: 147 [2024-11-22 10:49:06,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:06,821 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 25 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:06,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 117 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:49:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-22 10:49:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2024-11-22 10:49:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 96 states have internal predecessors, (121), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 10:49:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 163 transitions. [2024-11-22 10:49:06,846 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 163 transitions. Word has length 59 [2024-11-22 10:49:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:06,847 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 163 transitions. [2024-11-22 10:49:06,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 163 transitions. [2024-11-22 10:49:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 10:49:06,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:06,849 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:06,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 10:49:06,849 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:06,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:06,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1824120838, now seen corresponding path program 1 times [2024-11-22 10:49:06,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94787537] [2024-11-22 10:49:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94787537] [2024-11-22 10:49:07,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94787537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:07,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:07,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:49:07,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877667154] [2024-11-22 10:49:07,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:07,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:49:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:49:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:49:07,002 INFO L87 Difference]: Start difference. First operand 121 states and 163 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:07,087 INFO L93 Difference]: Finished difference Result 275 states and 369 transitions. [2024-11-22 10:49:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:49:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2024-11-22 10:49:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:07,089 INFO L225 Difference]: With dead ends: 275 [2024-11-22 10:49:07,090 INFO L226 Difference]: Without dead ends: 176 [2024-11-22 10:49:07,090 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 [2024-11-22 10:49:07,091 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 53 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:07,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-22 10:49:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 121. [2024-11-22 10:49:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 10:49:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2024-11-22 10:49:07,116 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 59 [2024-11-22 10:49:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:07,117 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2024-11-22 10:49:07,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:07,117 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2024-11-22 10:49:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 10:49:07,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:07,118 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:07,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:49:07,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:07,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1444451272, now seen corresponding path program 1 times [2024-11-22 10:49:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:07,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769582494] [2024-11-22 10:49:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769582494] [2024-11-22 10:49:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769582494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:07,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:07,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 10:49:07,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787151677] [2024-11-22 10:49:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:07,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 10:49:07,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 10:49:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:49:07,986 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:08,214 INFO L93 Difference]: Finished difference Result 339 states and 450 transitions. [2024-11-22 10:49:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 10:49:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2024-11-22 10:49:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:08,216 INFO L225 Difference]: With dead ends: 339 [2024-11-22 10:49:08,217 INFO L226 Difference]: Without dead ends: 240 [2024-11-22 10:49:08,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:49:08,219 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 208 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:08,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 293 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:49:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-22 10:49:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 112. [2024-11-22 10:49:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 87 states have internal predecessors, (106), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 10:49:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2024-11-22 10:49:08,240 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 60 [2024-11-22 10:49:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:08,243 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2024-11-22 10:49:08,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2024-11-22 10:49:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 10:49:08,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:08,244 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:08,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:49:08,244 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:08,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash 719275552, now seen corresponding path program 1 times [2024-11-22 10:49:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:08,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035327004] [2024-11-22 10:49:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:08,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:08,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:08,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035327004] [2024-11-22 10:49:08,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035327004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:08,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:08,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:49:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911012876] [2024-11-22 10:49:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:08,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:49:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:49:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:08,298 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:08,348 INFO L93 Difference]: Finished difference Result 278 states and 371 transitions. [2024-11-22 10:49:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:49:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2024-11-22 10:49:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:08,350 INFO L225 Difference]: With dead ends: 278 [2024-11-22 10:49:08,351 INFO L226 Difference]: Without dead ends: 188 [2024-11-22 10:49:08,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:08,352 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 28 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:08,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 94 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:49:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-22 10:49:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2024-11-22 10:49:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 145 states have (on average 1.2137931034482758) internal successors, (176), 145 states have internal predecessors, (176), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 10:49:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 246 transitions. [2024-11-22 10:49:08,370 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 246 transitions. Word has length 60 [2024-11-22 10:49:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:08,370 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 246 transitions. [2024-11-22 10:49:08,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 246 transitions. [2024-11-22 10:49:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-22 10:49:08,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:08,372 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:08,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 10:49:08,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:08,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1142102934, now seen corresponding path program 1 times [2024-11-22 10:49:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680805361] [2024-11-22 10:49:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:08,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:08,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680805361] [2024-11-22 10:49:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680805361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:08,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:08,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:49:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041609136] [2024-11-22 10:49:08,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:08,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:49:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:49:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:49:08,873 INFO L87 Difference]: Start difference. First operand 186 states and 246 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:09,080 INFO L93 Difference]: Finished difference Result 340 states and 444 transitions. [2024-11-22 10:49:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:49:09,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-22 10:49:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:09,083 INFO L225 Difference]: With dead ends: 340 [2024-11-22 10:49:09,084 INFO L226 Difference]: Without dead ends: 262 [2024-11-22 10:49:09,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:49:09,085 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 59 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:09,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 211 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:49:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-22 10:49:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 203. [2024-11-22 10:49:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 162 states have (on average 1.2222222222222223) internal successors, (198), 162 states have internal predecessors, (198), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 10:49:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 268 transitions. [2024-11-22 10:49:09,109 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 268 transitions. Word has length 61 [2024-11-22 10:49:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:09,109 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 268 transitions. [2024-11-22 10:49:09,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 268 transitions. [2024-11-22 10:49:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-22 10:49:09,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:09,111 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:09,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 10:49:09,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:09,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1400268372, now seen corresponding path program 1 times [2024-11-22 10:49:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947726765] [2024-11-22 10:49:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:09,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947726765] [2024-11-22 10:49:09,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947726765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:09,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:09,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:49:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839287070] [2024-11-22 10:49:09,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:09,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:49:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:49:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:09,154 INFO L87 Difference]: Start difference. First operand 203 states and 268 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:09,187 INFO L93 Difference]: Finished difference Result 342 states and 452 transitions. [2024-11-22 10:49:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:49:09,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-22 10:49:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:09,189 INFO L225 Difference]: With dead ends: 342 [2024-11-22 10:49:09,189 INFO L226 Difference]: Without dead ends: 161 [2024-11-22 10:49:09,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:09,190 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:09,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:49:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-22 10:49:09,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2024-11-22 10:49:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 114 states have internal predecessors, (134), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 10:49:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2024-11-22 10:49:09,207 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 61 [2024-11-22 10:49:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:09,207 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2024-11-22 10:49:09,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2024-11-22 10:49:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-22 10:49:09,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:09,209 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:09,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 10:49:09,209 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:09,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1909669513, now seen corresponding path program 1 times [2024-11-22 10:49:09,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:09,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641911927] [2024-11-22 10:49:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:09,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:09,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:09,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641911927] [2024-11-22 10:49:09,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641911927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:09,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:09,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:49:09,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119822105] [2024-11-22 10:49:09,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:09,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:49:09,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:49:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:49:09,806 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:10,443 INFO L93 Difference]: Finished difference Result 240 states and 304 transitions. [2024-11-22 10:49:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 10:49:10,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2024-11-22 10:49:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:10,445 INFO L225 Difference]: With dead ends: 240 [2024-11-22 10:49:10,445 INFO L226 Difference]: Without dead ends: 238 [2024-11-22 10:49:10,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-22 10:49:10,446 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 232 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:10,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 454 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:49:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-22 10:49:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 163. [2024-11-22 10:49:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 130 states have internal predecessors, (152), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 10:49:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 208 transitions. [2024-11-22 10:49:10,459 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 208 transitions. Word has length 63 [2024-11-22 10:49:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:10,459 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 208 transitions. [2024-11-22 10:49:10,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 208 transitions. [2024-11-22 10:49:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-22 10:49:10,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:10,460 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:10,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 10:49:10,460 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:10,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1196751867, now seen corresponding path program 1 times [2024-11-22 10:49:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244347853] [2024-11-22 10:49:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 10:49:10,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244347853] [2024-11-22 10:49:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244347853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 10:49:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141329917] [2024-11-22 10:49:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:10,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 10:49:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 10:49:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:49:10,841 INFO L87 Difference]: Start difference. First operand 163 states and 208 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:11,043 INFO L93 Difference]: Finished difference Result 172 states and 217 transitions. [2024-11-22 10:49:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 10:49:11,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2024-11-22 10:49:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:11,044 INFO L225 Difference]: With dead ends: 172 [2024-11-22 10:49:11,045 INFO L226 Difference]: Without dead ends: 170 [2024-11-22 10:49:11,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-22 10:49:11,046 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 45 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:11,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 429 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-22 10:49:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2024-11-22 10:49:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 130 states have internal predecessors, (151), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 10:49:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 207 transitions. [2024-11-22 10:49:11,057 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 207 transitions. Word has length 64 [2024-11-22 10:49:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:11,057 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 207 transitions. [2024-11-22 10:49:11,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 207 transitions. [2024-11-22 10:49:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 10:49:11,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:11,058 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:11,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 10:49:11,059 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:11,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2043906925, now seen corresponding path program 1 times [2024-11-22 10:49:11,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:11,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538911170] [2024-11-22 10:49:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:11,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-22 10:49:11,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:11,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538911170] [2024-11-22 10:49:11,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538911170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075269266] [2024-11-22 10:49:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:11,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:11,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:11,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:49:11,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 10:49:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:11,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 10:49:11,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-22 10:49:12,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:49:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-22 10:49:16,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075269266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:49:16,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:49:16,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 26 [2024-11-22 10:49:16,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261596143] [2024-11-22 10:49:16,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:49:16,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 10:49:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 10:49:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-22 10:49:16,417 INFO L87 Difference]: Start difference. First operand 163 states and 207 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 5 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 5 states have call predecessors, (42), 5 states have call successors, (42) [2024-11-22 10:49:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:23,346 INFO L93 Difference]: Finished difference Result 738 states and 918 transitions. [2024-11-22 10:49:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-22 10:49:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 5 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 5 states have call predecessors, (42), 5 states have call successors, (42) Word has length 118 [2024-11-22 10:49:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:23,350 INFO L225 Difference]: With dead ends: 738 [2024-11-22 10:49:23,350 INFO L226 Difference]: Without dead ends: 635 [2024-11-22 10:49:23,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1336, Invalid=4066, Unknown=0, NotChecked=0, Total=5402 [2024-11-22 10:49:23,353 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1085 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:23,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1178 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-22 10:49:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-22 10:49:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 399. [2024-11-22 10:49:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 310 states have (on average 1.1580645161290322) internal successors, (359), 310 states have internal predecessors, (359), 77 states have call successors, (77), 11 states have call predecessors, (77), 11 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 10:49:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 513 transitions. [2024-11-22 10:49:23,386 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 513 transitions. Word has length 118 [2024-11-22 10:49:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:23,386 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 513 transitions. [2024-11-22 10:49:23,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 5 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 5 states have call predecessors, (42), 5 states have call successors, (42) [2024-11-22 10:49:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 513 transitions. [2024-11-22 10:49:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-22 10:49:23,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:23,388 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:23,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 10:49:23,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 10:49:23,589 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:23,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1382792067, now seen corresponding path program 1 times [2024-11-22 10:49:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:23,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156300392] [2024-11-22 10:49:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-22 10:49:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156300392] [2024-11-22 10:49:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156300392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:24,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137423546] [2024-11-22 10:49:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:24,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:24,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:49:24,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 10:49:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:24,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 10:49:24,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-22 10:49:25,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:49:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137423546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:49:25,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2024-11-22 10:49:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843603102] [2024-11-22 10:49:25,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:25,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:49:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:49:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-22 10:49:25,326 INFO L87 Difference]: Start difference. First operand 399 states and 513 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:25,462 INFO L93 Difference]: Finished difference Result 728 states and 935 transitions. [2024-11-22 10:49:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:49:25,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 119 [2024-11-22 10:49:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:25,465 INFO L225 Difference]: With dead ends: 728 [2024-11-22 10:49:25,465 INFO L226 Difference]: Without dead ends: 481 [2024-11-22 10:49:25,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-22 10:49:25,467 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:25,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 159 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-22 10:49:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 390. [2024-11-22 10:49:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 301 states have (on average 1.1561461794019934) internal successors, (348), 301 states have internal predecessors, (348), 77 states have call successors, (77), 11 states have call predecessors, (77), 11 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 10:49:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 502 transitions. [2024-11-22 10:49:25,493 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 502 transitions. Word has length 119 [2024-11-22 10:49:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:25,493 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 502 transitions. [2024-11-22 10:49:25,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 502 transitions. [2024-11-22 10:49:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 10:49:25,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:25,495 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:25,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 10:49:25,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:25,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:25,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1018602839, now seen corresponding path program 1 times [2024-11-22 10:49:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434151064] [2024-11-22 10:49:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-22 10:49:26,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434151064] [2024-11-22 10:49:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434151064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:26,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:26,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 10:49:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601199610] [2024-11-22 10:49:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:26,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 10:49:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 10:49:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:49:26,098 INFO L87 Difference]: Start difference. First operand 390 states and 502 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:26,238 INFO L93 Difference]: Finished difference Result 575 states and 733 transitions. [2024-11-22 10:49:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 10:49:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 120 [2024-11-22 10:49:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:26,241 INFO L225 Difference]: With dead ends: 575 [2024-11-22 10:49:26,241 INFO L226 Difference]: Without dead ends: 426 [2024-11-22 10:49:26,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:49:26,242 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:26,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 212 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-22 10:49:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 362. [2024-11-22 10:49:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 281 states have (on average 1.1423487544483986) internal successors, (321), 281 states have internal predecessors, (321), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:49:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 461 transitions. [2024-11-22 10:49:26,266 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 461 transitions. Word has length 120 [2024-11-22 10:49:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:26,266 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 461 transitions. [2024-11-22 10:49:26,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 461 transitions. [2024-11-22 10:49:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-22 10:49:26,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:26,268 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:26,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 10:49:26,268 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:26,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1192519635, now seen corresponding path program 1 times [2024-11-22 10:49:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934733825] [2024-11-22 10:49:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-22 10:49:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934733825] [2024-11-22 10:49:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934733825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339033274] [2024-11-22 10:49:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:27,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:49:27,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 10:49:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:27,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 10:49:27,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-22 10:49:28,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:49:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339033274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:28,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:49:28,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 14 [2024-11-22 10:49:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215611328] [2024-11-22 10:49:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:28,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:49:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:49:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:49:28,493 INFO L87 Difference]: Start difference. First operand 362 states and 461 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:28,614 INFO L93 Difference]: Finished difference Result 541 states and 683 transitions. [2024-11-22 10:49:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:49:28,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 121 [2024-11-22 10:49:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:28,617 INFO L225 Difference]: With dead ends: 541 [2024-11-22 10:49:28,617 INFO L226 Difference]: Without dead ends: 424 [2024-11-22 10:49:28,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-22 10:49:28,618 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:28,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 156 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-22 10:49:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 357. [2024-11-22 10:49:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 276 states have (on average 1.1340579710144927) internal successors, (313), 276 states have internal predecessors, (313), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:49:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 453 transitions. [2024-11-22 10:49:28,645 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 453 transitions. Word has length 121 [2024-11-22 10:49:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:28,645 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 453 transitions. [2024-11-22 10:49:28,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 453 transitions. [2024-11-22 10:49:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-22 10:49:28,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:28,647 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:28,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 10:49:28,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 10:49:28,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:28,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1028671250, now seen corresponding path program 1 times [2024-11-22 10:49:28,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:28,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886615896] [2024-11-22 10:49:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:28,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-22 10:49:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886615896] [2024-11-22 10:49:29,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886615896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:29,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:29,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:49:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567502126] [2024-11-22 10:49:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:29,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:49:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:49:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:49:29,322 INFO L87 Difference]: Start difference. First operand 357 states and 453 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:29,646 INFO L93 Difference]: Finished difference Result 532 states and 673 transitions. [2024-11-22 10:49:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:49:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 122 [2024-11-22 10:49:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:29,650 INFO L225 Difference]: With dead ends: 532 [2024-11-22 10:49:29,650 INFO L226 Difference]: Without dead ends: 530 [2024-11-22 10:49:29,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:49:29,651 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 79 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:29,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 479 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:49:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-22 10:49:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 399. [2024-11-22 10:49:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 318 states have (on average 1.1320754716981132) internal successors, (360), 318 states have internal predecessors, (360), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:49:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 500 transitions. [2024-11-22 10:49:29,681 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 500 transitions. Word has length 122 [2024-11-22 10:49:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:29,682 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 500 transitions. [2024-11-22 10:49:29,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 500 transitions. [2024-11-22 10:49:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-22 10:49:29,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:29,683 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 10:49:29,684 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:29,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash -458937852, now seen corresponding path program 1 times [2024-11-22 10:49:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282491201] [2024-11-22 10:49:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:29,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-22 10:49:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282491201] [2024-11-22 10:49:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282491201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183615503] [2024-11-22 10:49:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:30,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:49:30,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 10:49:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:30,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 10:49:30,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 11 proven. 39 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-22 10:49:30,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:49:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-22 10:49:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183615503] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:30,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 10:49:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 11] total 22 [2024-11-22 10:49:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125825331] [2024-11-22 10:49:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:30,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 10:49:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 10:49:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-22 10:49:30,783 INFO L87 Difference]: Start difference. First operand 399 states and 500 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:31,013 INFO L93 Difference]: Finished difference Result 658 states and 817 transitions. [2024-11-22 10:49:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 10:49:31,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 122 [2024-11-22 10:49:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:31,016 INFO L225 Difference]: With dead ends: 658 [2024-11-22 10:49:31,016 INFO L226 Difference]: Without dead ends: 656 [2024-11-22 10:49:31,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-22 10:49:31,017 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 38 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:31,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 377 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-22 10:49:31,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 407. [2024-11-22 10:49:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 326 states have (on average 1.1319018404907975) internal successors, (369), 326 states have internal predecessors, (369), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:49:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 509 transitions. [2024-11-22 10:49:31,065 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 509 transitions. Word has length 122 [2024-11-22 10:49:31,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:31,066 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 509 transitions. [2024-11-22 10:49:31,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 509 transitions. [2024-11-22 10:49:31,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-22 10:49:31,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:31,067 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:31,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 10:49:31,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 10:49:31,268 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:31,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -851964862, now seen corresponding path program 1 times [2024-11-22 10:49:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:31,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405135323] [2024-11-22 10:49:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:31,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-11-22 10:49:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405135323] [2024-11-22 10:49:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405135323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:31,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:31,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:49:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938801256] [2024-11-22 10:49:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:31,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:49:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:49:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:31,326 INFO L87 Difference]: Start difference. First operand 407 states and 509 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:31,358 INFO L93 Difference]: Finished difference Result 544 states and 682 transitions. [2024-11-22 10:49:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:49:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 122 [2024-11-22 10:49:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:31,360 INFO L225 Difference]: With dead ends: 544 [2024-11-22 10:49:31,361 INFO L226 Difference]: Without dead ends: 395 [2024-11-22 10:49:31,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:49:31,361 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:31,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:49:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-22 10:49:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-22 10:49:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 314 states have (on average 1.1210191082802548) internal successors, (352), 314 states have internal predecessors, (352), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:49:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 492 transitions. [2024-11-22 10:49:31,390 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 492 transitions. Word has length 122 [2024-11-22 10:49:31,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:31,391 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 492 transitions. [2024-11-22 10:49:31,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 492 transitions. [2024-11-22 10:49:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-22 10:49:31,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:31,392 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:31,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 10:49:31,392 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:31,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1998321160, now seen corresponding path program 1 times [2024-11-22 10:49:31,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:31,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474282476] [2024-11-22 10:49:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:31,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-22 10:49:33,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474282476] [2024-11-22 10:49:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474282476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142347438] [2024-11-22 10:49:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:33,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:33,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:33,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:49:33,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 10:49:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:33,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 10:49:33,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-22 10:49:33,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:49:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142347438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:33,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:49:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 24 [2024-11-22 10:49:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520161212] [2024-11-22 10:49:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:33,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:49:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:49:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-22 10:49:33,357 INFO L87 Difference]: Start difference. First operand 395 states and 492 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:33,576 INFO L93 Difference]: Finished difference Result 650 states and 816 transitions. [2024-11-22 10:49:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:49:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 123 [2024-11-22 10:49:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:33,580 INFO L225 Difference]: With dead ends: 650 [2024-11-22 10:49:33,580 INFO L226 Difference]: Without dead ends: 648 [2024-11-22 10:49:33,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-22 10:49:33,581 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 80 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:33,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 487 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:49:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-22 10:49:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 392. [2024-11-22 10:49:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 311 states have (on average 1.1189710610932475) internal successors, (348), 311 states have internal predecessors, (348), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:49:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 488 transitions. [2024-11-22 10:49:33,620 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 488 transitions. Word has length 123 [2024-11-22 10:49:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:33,620 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 488 transitions. [2024-11-22 10:49:33,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 488 transitions. [2024-11-22 10:49:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-22 10:49:33,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:33,621 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:33,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 10:49:33,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:33,823 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:33,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1297256582, now seen corresponding path program 1 times [2024-11-22 10:49:33,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908839831] [2024-11-22 10:49:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:33,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-22 10:49:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908839831] [2024-11-22 10:49:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908839831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:49:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059648889] [2024-11-22 10:49:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:34,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:34,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:49:34,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:49:34,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 10:49:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:34,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 10:49:34,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:49:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-22 10:49:36,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:49:36,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059648889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:36,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:49:36,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2024-11-22 10:49:36,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560518874] [2024-11-22 10:49:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:36,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:49:36,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:49:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-22 10:49:36,623 INFO L87 Difference]: Start difference. First operand 392 states and 488 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:37,018 INFO L93 Difference]: Finished difference Result 559 states and 689 transitions. [2024-11-22 10:49:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 10:49:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 123 [2024-11-22 10:49:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:37,021 INFO L225 Difference]: With dead ends: 559 [2024-11-22 10:49:37,021 INFO L226 Difference]: Without dead ends: 557 [2024-11-22 10:49:37,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-22 10:49:37,022 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 59 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:37,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 585 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:49:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-22 10:49:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 336. [2024-11-22 10:49:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 263 states have (on average 1.1102661596958174) internal successors, (292), 263 states have internal predecessors, (292), 63 states have call successors, (63), 9 states have call predecessors, (63), 9 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-22 10:49:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 418 transitions. [2024-11-22 10:49:37,054 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 418 transitions. Word has length 123 [2024-11-22 10:49:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:37,055 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 418 transitions. [2024-11-22 10:49:37,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 418 transitions. [2024-11-22 10:49:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 10:49:37,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:49:37,056 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:37,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 10:49:37,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:49:37,257 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:49:37,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:49:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1138777084, now seen corresponding path program 1 times [2024-11-22 10:49:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:49:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618344734] [2024-11-22 10:49:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:49:37,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:49:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:49:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-22 10:49:37,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:49:37,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618344734] [2024-11-22 10:49:37,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618344734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:49:37,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:49:37,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:49:37,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329692730] [2024-11-22 10:49:37,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:49:37,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:49:37,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:49:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:49:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:49:37,657 INFO L87 Difference]: Start difference. First operand 336 states and 418 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:49:38,079 INFO L93 Difference]: Finished difference Result 512 states and 645 transitions. [2024-11-22 10:49:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 10:49:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 124 [2024-11-22 10:49:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:49:38,080 INFO L225 Difference]: With dead ends: 512 [2024-11-22 10:49:38,080 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 10:49:38,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-22 10:49:38,082 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 102 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:49:38,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 409 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:49:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 10:49:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 10:49:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 10:49:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 10:49:38,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2024-11-22 10:49:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:49:38,084 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 10:49:38,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 10:49:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 10:49:38,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 10:49:38,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 10:49:38,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 10:49:38,089 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:49:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 10:49:55,435 WARN L286 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 323 DAG size of output: 120 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-22 10:49:57,826 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 10:49:57,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:49:57 BoogieIcfgContainer [2024-11-22 10:49:57,850 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 10:49:57,851 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 10:49:57,851 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 10:49:57,851 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 10:49:57,852 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:49:04" (3/4) ... [2024-11-22 10:49:57,854 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 10:49:57,857 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-22 10:49:57,860 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-22 10:49:57,860 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 10:49:57,860 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 10:49:57,860 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 10:49:57,930 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 10:49:57,931 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 10:49:57,931 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 10:49:57,931 INFO L158 Benchmark]: Toolchain (without parser) took 54016.35ms. Allocated memory was 176.2MB in the beginning and 903.9MB in the end (delta: 727.7MB). Free memory was 119.9MB in the beginning and 515.6MB in the end (delta: -395.7MB). Peak memory consumption was 333.6MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,931 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 176.2MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 10:49:57,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.93ms. Allocated memory is still 176.2MB. Free memory was 119.6MB in the beginning and 105.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.95ms. Allocated memory is still 176.2MB. Free memory was 105.5MB in the beginning and 103.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,932 INFO L158 Benchmark]: Boogie Preprocessor took 39.31ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 99.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,932 INFO L158 Benchmark]: RCFGBuilder took 357.11ms. Allocated memory is still 176.2MB. Free memory was 99.9MB in the beginning and 84.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,932 INFO L158 Benchmark]: TraceAbstraction took 53214.71ms. Allocated memory was 176.2MB in the beginning and 903.9MB in the end (delta: 727.7MB). Free memory was 83.4MB in the beginning and 521.9MB in the end (delta: -438.5MB). Peak memory consumption was 486.7MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,932 INFO L158 Benchmark]: Witness Printer took 79.62ms. Allocated memory is still 903.9MB. Free memory was 521.9MB in the beginning and 515.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-22 10:49:57,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 176.2MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.93ms. Allocated memory is still 176.2MB. Free memory was 119.6MB in the beginning and 105.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.95ms. Allocated memory is still 176.2MB. Free memory was 105.5MB in the beginning and 103.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.31ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 99.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 357.11ms. Allocated memory is still 176.2MB. Free memory was 99.9MB in the beginning and 84.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 53214.71ms. Allocated memory was 176.2MB in the beginning and 903.9MB in the end (delta: 727.7MB). Free memory was 83.4MB in the beginning and 521.9MB in the end (delta: -438.5MB). Peak memory consumption was 486.7MB. Max. memory is 16.1GB. * Witness Printer took 79.62ms. Allocated memory is still 903.9MB. Free memory was 521.9MB in the beginning and 515.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.4s, OverallIterations: 21, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2430 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2430 mSDsluCounter, 6435 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5042 mSDsCounter, 526 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3683 IncrementalHoareTripleChecker+Invalid, 4209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 526 mSolverCounterUnsat, 1393 mSDtfsCounter, 3683 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1328 GetRequests, 1051 SyntacticMatches, 4 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2646 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=17, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 1767 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 2660 NumberOfCodeBlocks, 2660 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2870 ConstructedInterpolants, 0 QuantifiedInterpolants, 18418 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1760 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 30 InterpolantComputations, 20 PerfectInterpolantSequences, 7872/8072 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: (((var_1_11 != var_1_5) || (var_1_1 != 0)) || ((((long long) 65520 + var_1_11) % 65536) != 0)) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: ((var_1_1 != 0) || (((var_1_11 != var_1_5) || ((((long long) 65520 + var_1_11) % 65536) != 0)) && ((last_1_var_1_11 != last_1_var_1_5) || ((((long long) 65520 + last_1_var_1_11) % 65536) != 0)))) Ensures: (((var_1_1 != 0) || (((var_1_11 != var_1_5) || ((((long long) 65520 + var_1_11) % 65536) != 0)) && ((last_1_var_1_11 != last_1_var_1_5) || ((((long long) 65520 + last_1_var_1_11) % 65536) != 0)))) && ((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_4 == \old(var_1_4))) && (var_1_5 == \old(var_1_5))) && (var_1_6 == \old(var_1_6))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8))) && (var_1_9 == \old(var_1_9))) && (var_1_10 == \old(var_1_10))) && (var_1_11 == \old(var_1_11))) && (last_1_var_1_5 == \old(last_1_var_1_5))) && (last_1_var_1_11 == \old(last_1_var_1_11)))) RESULT: Ultimate proved your program to be correct! [2024-11-22 10:49:57,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE