./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.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_100-1loop_file-20.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 d7483f4c602f1d80c3d31837b57d86164e65df5e6fa201344a2b0a8f22740044 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:15:23,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:15:23,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:15:23,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:15:23,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:15:23,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:15:23,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:15:23,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:15:23,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:15:23,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:15:23,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:15:23,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:15:23,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:15:23,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:15:23,422 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:15:23,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:15:23,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:15:23,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:15:23,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:15:23,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:15:23,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:15:23,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:15:23,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:15:23,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:15:23,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:15:23,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:15:23,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:15:23,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:15:23,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:15:23,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:15:23,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:15:23,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:15:23,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:15:23,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:15:23,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:15:23,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:15:23,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:15:23,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:15:23,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:15:23,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:15:23,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:15:23,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:15:23,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7483f4c602f1d80c3d31837b57d86164e65df5e6fa201344a2b0a8f22740044 [2024-11-22 10:15:23,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:15:23,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:15:23,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:15:23,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:15:23,708 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:15:23,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i [2024-11-22 10:15:25,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:15:25,394 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:15:25,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i [2024-11-22 10:15:25,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07987530c/b03fa14c90924b9f8a111d0fcd1f08e4/FLAG09a983068 [2024-11-22 10:15:25,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07987530c/b03fa14c90924b9f8a111d0fcd1f08e4 [2024-11-22 10:15:25,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:15:25,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:15:25,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:15:25,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:15:25,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:15:25,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:25,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@835feee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25, skipping insertion in model container [2024-11-22 10:15:25,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:25,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:15:25,649 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_100-1loop_file-20.i[916,929] [2024-11-22 10:15:25,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:15:25,755 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:15:25,768 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_100-1loop_file-20.i[916,929] [2024-11-22 10:15:25,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:15:25,834 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:15:25,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25 WrapperNode [2024-11-22 10:15:25,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:15:25,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:15:25,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:15:25,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:15:25,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:25,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:25,924 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2024-11-22 10:15:25,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:15:25,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:15:25,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:15:25,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:15:25,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:25,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:25,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,009 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 10:15:26,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:15:26,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:15:26,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:15:26,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:15:26,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (1/1) ... [2024-11-22 10:15:26,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:15:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:15:26,138 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 10:15:26,142 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 10:15:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:15:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:15:26,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:15:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:15:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:15:26,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:15:26,296 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:15:26,300 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:15:26,900 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-22 10:15:26,902 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:15:26,924 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:15:26,924 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:15:26,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:15:26 BoogieIcfgContainer [2024-11-22 10:15:26,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:15:26,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:15:26,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:15:26,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:15:26,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:15:25" (1/3) ... [2024-11-22 10:15:26,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b996fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:15:26, skipping insertion in model container [2024-11-22 10:15:26,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:25" (2/3) ... [2024-11-22 10:15:26,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b996fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:15:26, skipping insertion in model container [2024-11-22 10:15:26,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:15:26" (3/3) ... [2024-11-22 10:15:26,937 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-20.i [2024-11-22 10:15:26,953 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:15:26,954 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:15:27,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:15:27,036 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;@56fe419f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:15:27,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:15:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 84 states have internal predecessors, (119), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 10:15:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-22 10:15:27,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:27,062 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:27,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:27,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:27,071 INFO L85 PathProgramCache]: Analyzing trace with hash 963517484, now seen corresponding path program 1 times [2024-11-22 10:15:27,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:27,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240916499] [2024-11-22 10:15:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:27,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:28,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:28,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240916499] [2024-11-22 10:15:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240916499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:28,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:15:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146718311] [2024-11-22 10:15:28,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:28,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:15:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:15:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:15:28,115 INFO L87 Difference]: Start difference. First operand has 117 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 84 states have internal predecessors, (119), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:28,526 INFO L93 Difference]: Finished difference Result 384 states and 658 transitions. [2024-11-22 10:15:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:15:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-22 10:15:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:28,544 INFO L225 Difference]: With dead ends: 384 [2024-11-22 10:15:28,545 INFO L226 Difference]: Without dead ends: 258 [2024-11-22 10:15:28,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:15:28,558 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 183 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:28,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 759 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:15:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-22 10:15:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2024-11-22 10:15:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 181 states have (on average 1.3977900552486189) internal successors, (253), 181 states have internal predecessors, (253), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 10:15:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 377 transitions. [2024-11-22 10:15:28,660 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 377 transitions. Word has length 204 [2024-11-22 10:15:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:28,663 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 377 transitions. [2024-11-22 10:15:28,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 377 transitions. [2024-11-22 10:15:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-22 10:15:28,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:28,702 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:28,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 10:15:28,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:28,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1570159055, now seen corresponding path program 1 times [2024-11-22 10:15:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635411959] [2024-11-22 10:15:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:29,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635411959] [2024-11-22 10:15:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635411959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:29,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:29,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:15:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447578846] [2024-11-22 10:15:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:29,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:15:29,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:15:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:15:29,238 INFO L87 Difference]: Start difference. First operand 246 states and 377 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:29,557 INFO L93 Difference]: Finished difference Result 715 states and 1096 transitions. [2024-11-22 10:15:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:15:29,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-22 10:15:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:29,567 INFO L225 Difference]: With dead ends: 715 [2024-11-22 10:15:29,567 INFO L226 Difference]: Without dead ends: 472 [2024-11-22 10:15:29,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:15:29,574 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 144 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:29,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 584 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:15:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-22 10:15:29,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 321. [2024-11-22 10:15:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 256 states have (on average 1.4453125) internal successors, (370), 256 states have internal predecessors, (370), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 10:15:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 494 transitions. [2024-11-22 10:15:29,620 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 494 transitions. Word has length 205 [2024-11-22 10:15:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:29,621 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 494 transitions. [2024-11-22 10:15:29,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 494 transitions. [2024-11-22 10:15:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-22 10:15:29,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:29,630 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:29,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:15:29,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:29,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash -528286763, now seen corresponding path program 1 times [2024-11-22 10:15:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035488306] [2024-11-22 10:15:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035488306] [2024-11-22 10:15:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035488306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:33,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:33,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 10:15:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197675144] [2024-11-22 10:15:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:33,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 10:15:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 10:15:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:15:33,372 INFO L87 Difference]: Start difference. First operand 321 states and 494 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:36,151 INFO L93 Difference]: Finished difference Result 1162 states and 1713 transitions. [2024-11-22 10:15:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 10:15:36,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-22 10:15:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:36,157 INFO L225 Difference]: With dead ends: 1162 [2024-11-22 10:15:36,157 INFO L226 Difference]: Without dead ends: 844 [2024-11-22 10:15:36,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-22 10:15:36,160 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 546 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:36,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1427 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-22 10:15:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-22 10:15:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 389. [2024-11-22 10:15:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 324 states have (on average 1.462962962962963) internal successors, (474), 324 states have internal predecessors, (474), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 10:15:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 598 transitions. [2024-11-22 10:15:36,199 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 598 transitions. Word has length 206 [2024-11-22 10:15:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:36,201 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 598 transitions. [2024-11-22 10:15:36,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 598 transitions. [2024-11-22 10:15:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-22 10:15:36,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:36,208 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:36,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:15:36,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:36,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1808150441, now seen corresponding path program 1 times [2024-11-22 10:15:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:36,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874185891] [2024-11-22 10:15:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:36,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874185891] [2024-11-22 10:15:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874185891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:15:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621389743] [2024-11-22 10:15:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:37,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:15:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:15:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:15:37,598 INFO L87 Difference]: Start difference. First operand 389 states and 598 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:38,158 INFO L93 Difference]: Finished difference Result 1100 states and 1681 transitions. [2024-11-22 10:15:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 10:15:38,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-22 10:15:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:38,165 INFO L225 Difference]: With dead ends: 1100 [2024-11-22 10:15:38,165 INFO L226 Difference]: Without dead ends: 714 [2024-11-22 10:15:38,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:15:38,170 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 349 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:38,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 492 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:15:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-22 10:15:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 475. [2024-11-22 10:15:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 410 states have (on average 1.4926829268292683) internal successors, (612), 410 states have internal predecessors, (612), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 10:15:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 736 transitions. [2024-11-22 10:15:38,199 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 736 transitions. Word has length 206 [2024-11-22 10:15:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:38,202 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 736 transitions. [2024-11-22 10:15:38,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 736 transitions. [2024-11-22 10:15:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-22 10:15:38,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:38,207 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:38,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 10:15:38,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:38,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 797873113, now seen corresponding path program 1 times [2024-11-22 10:15:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:38,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268131827] [2024-11-22 10:15:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268131827] [2024-11-22 10:15:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268131827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:39,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:39,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:15:39,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566763738] [2024-11-22 10:15:39,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:39,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:15:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:15:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:15:39,725 INFO L87 Difference]: Start difference. First operand 475 states and 736 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:41,047 INFO L93 Difference]: Finished difference Result 1237 states and 1874 transitions. [2024-11-22 10:15:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:15:41,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-22 10:15:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:41,053 INFO L225 Difference]: With dead ends: 1237 [2024-11-22 10:15:41,053 INFO L226 Difference]: Without dead ends: 765 [2024-11-22 10:15:41,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-22 10:15:41,056 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 388 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:41,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 776 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 10:15:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-22 10:15:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 420. [2024-11-22 10:15:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 355 states have (on average 1.4732394366197183) internal successors, (523), 355 states have internal predecessors, (523), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 10:15:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 647 transitions. [2024-11-22 10:15:41,086 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 647 transitions. Word has length 206 [2024-11-22 10:15:41,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:41,087 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 647 transitions. [2024-11-22 10:15:41,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 647 transitions. [2024-11-22 10:15:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-22 10:15:41,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:41,090 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:41,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:15:41,091 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:41,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash -147945687, now seen corresponding path program 1 times [2024-11-22 10:15:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407040073] [2024-11-22 10:15:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:41,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:41,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:41,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407040073] [2024-11-22 10:15:41,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407040073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:41,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:41,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:15:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646840434] [2024-11-22 10:15:41,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:41,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:15:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:15:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:15:41,219 INFO L87 Difference]: Start difference. First operand 420 states and 647 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:41,321 INFO L93 Difference]: Finished difference Result 1105 states and 1703 transitions. [2024-11-22 10:15:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:15:41,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-22 10:15:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:41,329 INFO L225 Difference]: With dead ends: 1105 [2024-11-22 10:15:41,330 INFO L226 Difference]: Without dead ends: 688 [2024-11-22 10:15:41,331 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 10:15:41,332 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 148 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:41,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 459 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:15:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-22 10:15:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 539. [2024-11-22 10:15:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 474 states have (on average 1.4915611814345993) internal successors, (707), 474 states have internal predecessors, (707), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 10:15:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 831 transitions. [2024-11-22 10:15:41,368 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 831 transitions. Word has length 206 [2024-11-22 10:15:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:41,370 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 831 transitions. [2024-11-22 10:15:41,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 831 transitions. [2024-11-22 10:15:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-22 10:15:41,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:41,373 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:41,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:15:41,373 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1976753518, now seen corresponding path program 1 times [2024-11-22 10:15:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:41,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671752645] [2024-11-22 10:15:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:41,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:41,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671752645] [2024-11-22 10:15:41,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671752645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:41,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:41,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:15:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690664350] [2024-11-22 10:15:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:41,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:15:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:15:41,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:15:41,735 INFO L87 Difference]: Start difference. First operand 539 states and 831 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:42,194 INFO L93 Difference]: Finished difference Result 1444 states and 2219 transitions. [2024-11-22 10:15:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:15:42,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 207 [2024-11-22 10:15:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:42,201 INFO L225 Difference]: With dead ends: 1444 [2024-11-22 10:15:42,202 INFO L226 Difference]: Without dead ends: 908 [2024-11-22 10:15:42,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:15:42,205 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 172 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:42,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 560 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 10:15:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-11-22 10:15:42,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 750. [2024-11-22 10:15:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 679 states have (on average 1.508100147275405) internal successors, (1024), 680 states have internal predecessors, (1024), 66 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 10:15:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1156 transitions. [2024-11-22 10:15:42,242 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1156 transitions. Word has length 207 [2024-11-22 10:15:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:42,244 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1156 transitions. [2024-11-22 10:15:42,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1156 transitions. [2024-11-22 10:15:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-22 10:15:42,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:42,249 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:42,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 10:15:42,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:42,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -418640496, now seen corresponding path program 1 times [2024-11-22 10:15:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:42,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123016801] [2024-11-22 10:15:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-22 10:15:42,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123016801] [2024-11-22 10:15:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123016801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:15:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889128840] [2024-11-22 10:15:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:42,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:15:42,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:15:42,992 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 10:15:42,993 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 10:15:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:43,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 10:15:43,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:15:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-22 10:15:44,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:15:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-22 10:15:44,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889128840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:15:44,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:15:44,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 20 [2024-11-22 10:15:44,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163574833] [2024-11-22 10:15:44,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:15:44,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 10:15:44,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 10:15:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-22 10:15:44,694 INFO L87 Difference]: Start difference. First operand 750 states and 1156 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 5 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (79), 5 states have call predecessors, (79), 5 states have call successors, (79) [2024-11-22 10:15:47,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:47,908 INFO L93 Difference]: Finished difference Result 2147 states and 3167 transitions. [2024-11-22 10:15:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-22 10:15:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 5 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (79), 5 states have call predecessors, (79), 5 states have call successors, (79) Word has length 208 [2024-11-22 10:15:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:47,916 INFO L225 Difference]: With dead ends: 2147 [2024-11-22 10:15:47,917 INFO L226 Difference]: Without dead ends: 1184 [2024-11-22 10:15:47,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1214, Invalid=4042, Unknown=0, NotChecked=0, Total=5256 [2024-11-22 10:15:47,923 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 1332 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:47,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1307 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 10:15:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-22 10:15:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 858. [2024-11-22 10:15:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 751 states have (on average 1.4354194407456724) internal successors, (1078), 755 states have internal predecessors, (1078), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 10:15:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1258 transitions. [2024-11-22 10:15:48,019 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1258 transitions. Word has length 208 [2024-11-22 10:15:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:48,019 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1258 transitions. [2024-11-22 10:15:48,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 5 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (79), 5 states have call predecessors, (79), 5 states have call successors, (79) [2024-11-22 10:15:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1258 transitions. [2024-11-22 10:15:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-22 10:15:48,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:48,024 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:48,034 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 10:15:48,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:15:48,225 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:48,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash -476914868, now seen corresponding path program 1 times [2024-11-22 10:15:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985129390] [2024-11-22 10:15:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:50,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:50,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985129390] [2024-11-22 10:15:50,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985129390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:50,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:50,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 10:15:50,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9259471] [2024-11-22 10:15:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:50,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:15:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:15:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:15:50,614 INFO L87 Difference]: Start difference. First operand 858 states and 1258 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:53,100 INFO L93 Difference]: Finished difference Result 2055 states and 2989 transitions. [2024-11-22 10:15:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:15:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-22 10:15:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:53,112 INFO L225 Difference]: With dead ends: 2055 [2024-11-22 10:15:53,112 INFO L226 Difference]: Without dead ends: 1532 [2024-11-22 10:15:53,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-22 10:15:53,117 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 644 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:53,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1198 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 10:15:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2024-11-22 10:15:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 874. [2024-11-22 10:15:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 767 states have (on average 1.4354628422425033) internal successors, (1101), 771 states have internal predecessors, (1101), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 10:15:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1281 transitions. [2024-11-22 10:15:53,198 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1281 transitions. Word has length 208 [2024-11-22 10:15:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:53,200 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1281 transitions. [2024-11-22 10:15:53,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1281 transitions. [2024-11-22 10:15:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-22 10:15:53,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:53,203 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:53,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 10:15:53,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:53,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1488032118, now seen corresponding path program 1 times [2024-11-22 10:15:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:53,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611004049] [2024-11-22 10:15:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:53,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:15:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:15:55,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:15:55,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611004049] [2024-11-22 10:15:55,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611004049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:15:55,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:15:55,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:15:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103956168] [2024-11-22 10:15:55,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:15:55,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:15:55,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:15:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:15:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:15:55,309 INFO L87 Difference]: Start difference. First operand 874 states and 1281 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:15:56,842 INFO L93 Difference]: Finished difference Result 2068 states and 3012 transitions. [2024-11-22 10:15:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:15:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-22 10:15:56,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:15:56,853 INFO L225 Difference]: With dead ends: 2068 [2024-11-22 10:15:56,853 INFO L226 Difference]: Without dead ends: 1197 [2024-11-22 10:15:56,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:15:56,859 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 282 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:15:56,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 889 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 10:15:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-22 10:15:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 924. [2024-11-22 10:15:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 817 states have (on average 1.438188494492044) internal successors, (1175), 821 states have internal predecessors, (1175), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 10:15:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1355 transitions. [2024-11-22 10:15:56,933 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1355 transitions. Word has length 208 [2024-11-22 10:15:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:15:56,933 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1355 transitions. [2024-11-22 10:15:56,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:15:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1355 transitions. [2024-11-22 10:15:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-22 10:15:56,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:15:56,937 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:56,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 10:15:56,937 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:15:56,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:15:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 101331390, now seen corresponding path program 1 times [2024-11-22 10:15:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:15:56,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858956165] [2024-11-22 10:15:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:15:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:15:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:16:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:02,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858956165] [2024-11-22 10:16:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858956165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:02,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 10:16:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186386341] [2024-11-22 10:16:02,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:02,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 10:16:02,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 10:16:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-22 10:16:02,404 INFO L87 Difference]: Start difference. First operand 924 states and 1355 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:16:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:10,210 INFO L93 Difference]: Finished difference Result 2353 states and 3409 transitions. [2024-11-22 10:16:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 10:16:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-11-22 10:16:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:10,220 INFO L225 Difference]: With dead ends: 2353 [2024-11-22 10:16:10,221 INFO L226 Difference]: Without dead ends: 1414 [2024-11-22 10:16:10,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2024-11-22 10:16:10,224 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 761 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:10,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1357 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-22 10:16:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-22 10:16:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1013. [2024-11-22 10:16:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 906 states have (on average 1.4426048565121412) internal successors, (1307), 910 states have internal predecessors, (1307), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 10:16:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1487 transitions. [2024-11-22 10:16:10,334 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1487 transitions. Word has length 209 [2024-11-22 10:16:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:10,335 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1487 transitions. [2024-11-22 10:16:10,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:16:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1487 transitions. [2024-11-22 10:16:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-22 10:16:10,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:10,338 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:10,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 10:16:10,339 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:10,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash 802395968, now seen corresponding path program 1 times [2024-11-22 10:16:10,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:10,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306696917] [2024-11-22 10:16:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:10,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:16:14,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:14,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306696917] [2024-11-22 10:16:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306696917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:14,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:14,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 10:16:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141829895] [2024-11-22 10:16:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:14,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 10:16:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 10:16:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-22 10:16:14,932 INFO L87 Difference]: Start difference. First operand 1013 states and 1487 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:16:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:18,066 INFO L93 Difference]: Finished difference Result 2454 states and 3548 transitions. [2024-11-22 10:16:18,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 10:16:18,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-11-22 10:16:18,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:18,076 INFO L225 Difference]: With dead ends: 2454 [2024-11-22 10:16:18,076 INFO L226 Difference]: Without dead ends: 1407 [2024-11-22 10:16:18,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2024-11-22 10:16:18,079 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 626 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:18,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 874 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 10:16:18,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-11-22 10:16:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 983. [2024-11-22 10:16:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 876 states have (on average 1.447488584474886) internal successors, (1268), 880 states have internal predecessors, (1268), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 10:16:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1448 transitions. [2024-11-22 10:16:18,173 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1448 transitions. Word has length 209 [2024-11-22 10:16:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:18,173 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1448 transitions. [2024-11-22 10:16:18,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:16:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1448 transitions. [2024-11-22 10:16:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-22 10:16:18,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:18,175 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:18,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 10:16:18,176 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:18,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash -919736964, now seen corresponding path program 1 times [2024-11-22 10:16:18,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842951560] [2024-11-22 10:16:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:18,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-22 10:16:22,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:22,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842951560] [2024-11-22 10:16:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842951560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:22,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:22,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 10:16:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487257505] [2024-11-22 10:16:22,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:22,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 10:16:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 10:16:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-22 10:16:22,429 INFO L87 Difference]: Start difference. First operand 983 states and 1448 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:16:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:32,863 INFO L93 Difference]: Finished difference Result 2523 states and 3663 transitions. [2024-11-22 10:16:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 10:16:32,864 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-11-22 10:16:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:32,871 INFO L225 Difference]: With dead ends: 2523 [2024-11-22 10:16:32,872 INFO L226 Difference]: Without dead ends: 1531 [2024-11-22 10:16:32,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2024-11-22 10:16:32,876 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 589 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:32,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1741 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-22 10:16:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-11-22 10:16:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1039. [2024-11-22 10:16:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 932 states have (on average 1.444206008583691) internal successors, (1346), 936 states have internal predecessors, (1346), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 10:16:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1526 transitions. [2024-11-22 10:16:32,968 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1526 transitions. Word has length 209 [2024-11-22 10:16:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:32,969 INFO L471 AbstractCegarLoop]: Abstraction has 1039 states and 1526 transitions. [2024-11-22 10:16:32,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-22 10:16:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1526 transitions. [2024-11-22 10:16:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-22 10:16:32,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:32,971 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:32,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 10:16:32,972 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:32,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash -218672386, now seen corresponding path program 1 times [2024-11-22 10:16:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057388777] [2024-11-22 10:16:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms