./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_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 e22f36fcb48e37029a5451272d2b65f2136f0249698c819249f45360edf16ac5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:31:10,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:31:10,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:31:10,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:31:10,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:31:11,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:31:11,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:31:11,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:31:11,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:31:11,015 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:31:11,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:31:11,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:31:11,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:31:11,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:31:11,017 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:31:11,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:31:11,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:31:11,017 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:31:11,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:31:11,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:31:11,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:31:11,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:31:11,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:31:11,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:31:11,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:31:11,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:31:11,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:31:11,022 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:31:11,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:31:11,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:31:11,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:31:11,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:31:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:31:11,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:31:11,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:31:11,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:31:11,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:31:11,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:31:11,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:31:11,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:31:11,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:31:11,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:31:11,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22f36fcb48e37029a5451272d2b65f2136f0249698c819249f45360edf16ac5 [2024-11-18 22:31:11,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:31:11,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:31:11,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:31:11,338 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:31:11,339 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:31:11,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-20.i [2024-11-18 22:31:12,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:31:13,015 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:31:13,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-20.i [2024-11-18 22:31:13,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663c355d9/7bc8969f8d824dbdaf76c7cdf119e50c/FLAG25ee165a5 [2024-11-18 22:31:13,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663c355d9/7bc8969f8d824dbdaf76c7cdf119e50c [2024-11-18 22:31:13,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:31:13,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:31:13,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:31:13,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:31:13,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:31:13,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448fc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13, skipping insertion in model container [2024-11-18 22:31:13,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:31:13,603 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-while_file-20.i[916,929] [2024-11-18 22:31:13,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:31:13,726 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:31:13,737 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-while_file-20.i[916,929] [2024-11-18 22:31:13,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:31:13,797 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:31:13,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13 WrapperNode [2024-11-18 22:31:13,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:31:13,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:31:13,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:31:13,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:31:13,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,878 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2024-11-18 22:31:13,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:31:13,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:31:13,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:31:13,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:31:13,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,953 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:31:13,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:13,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:31:14,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:31:14,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:31:14,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:31:14,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (1/1) ... [2024-11-18 22:31:14,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:31:14,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:31:14,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 22:31:14,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 22:31:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:31:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:31:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:31:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:31:14,231 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:31:14,232 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:31:14,796 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-18 22:31:14,797 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:31:14,821 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:31:14,823 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:31:14,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:31:14 BoogieIcfgContainer [2024-11-18 22:31:14,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:31:14,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:31:14,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:31:14,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:31:14,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:31:13" (1/3) ... [2024-11-18 22:31:14,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbd1043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:31:14, skipping insertion in model container [2024-11-18 22:31:14,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:31:13" (2/3) ... [2024-11-18 22:31:14,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbd1043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:31:14, skipping insertion in model container [2024-11-18 22:31:14,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:31:14" (3/3) ... [2024-11-18 22:31:14,831 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-20.i [2024-11-18 22:31:14,849 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:31:14,850 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:31:14,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:31:14,929 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;@110ad2e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:31:14,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:31:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 83 states have internal predecessors, (118), 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) [2024-11-18 22:31:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 22:31:14,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:14,954 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] [2024-11-18 22:31:14,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:14,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2057946147, now seen corresponding path program 1 times [2024-11-18 22:31:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:14,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822915347] [2024-11-18 22:31:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-18 22:31:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:15,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822915347] [2024-11-18 22:31:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822915347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:31:15,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585626803] [2024-11-18 22:31:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:15,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:31:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:31:15,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:31:15,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:31:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:15,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:31:15,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:31:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-18 22:31:15,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:31:15,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585626803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:15,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:31:15,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:31:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330229007] [2024-11-18 22:31:15,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:15,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:31:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:31:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:31:15,777 INFO L87 Difference]: Start difference. First operand has 116 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 83 states have internal predecessors, (118), 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 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 22:31:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:15,811 INFO L93 Difference]: Finished difference Result 225 states and 385 transitions. [2024-11-18 22:31:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:31:15,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 204 [2024-11-18 22:31:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:15,822 INFO L225 Difference]: With dead ends: 225 [2024-11-18 22:31:15,822 INFO L226 Difference]: Without dead ends: 112 [2024-11-18 22:31:15,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:31:15,829 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:15,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:31:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-18 22:31:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-18 22:31:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 79 states have internal predecessors, (111), 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) [2024-11-18 22:31:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 173 transitions. [2024-11-18 22:31:15,886 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 173 transitions. Word has length 204 [2024-11-18 22:31:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:15,886 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 173 transitions. [2024-11-18 22:31:15,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 22:31:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 173 transitions. [2024-11-18 22:31:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 22:31:15,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:15,892 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] [2024-11-18 22:31:15,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:31:16,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:31:16,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:16,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 418414377, now seen corresponding path program 1 times [2024-11-18 22:31:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620016622] [2024-11-18 22:31:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:16,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:16,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620016622] [2024-11-18 22:31:16,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620016622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:16,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:16,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:31:16,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565790929] [2024-11-18 22:31:16,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:16,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:31:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:31:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:31:16,731 INFO L87 Difference]: Start difference. First operand 112 states and 173 transitions. 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) [2024-11-18 22:31:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:17,110 INFO L93 Difference]: Finished difference Result 364 states and 565 transitions. [2024-11-18 22:31:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:31:17,112 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 [2024-11-18 22:31:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:17,119 INFO L225 Difference]: With dead ends: 364 [2024-11-18 22:31:17,120 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 22:31:17,122 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 [2024-11-18 22:31:17,123 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 169 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 737 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 [2024-11-18 22:31:17,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 737 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:31:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 22:31:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 244. [2024-11-18 22:31:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 179 states have (on average 1.4022346368715084) internal successors, (251), 179 states have internal predecessors, (251), 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) [2024-11-18 22:31:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 375 transitions. [2024-11-18 22:31:17,160 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 375 transitions. Word has length 204 [2024-11-18 22:31:17,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:17,161 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 375 transitions. [2024-11-18 22:31:17,162 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) [2024-11-18 22:31:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 375 transitions. [2024-11-18 22:31:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 22:31:17,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:17,166 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] [2024-11-18 22:31:17,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:31:17,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:17,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 180407095, now seen corresponding path program 1 times [2024-11-18 22:31:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:17,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776101916] [2024-11-18 22:31:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:17,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:17,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:17,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776101916] [2024-11-18 22:31:17,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776101916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:17,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:31:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641440190] [2024-11-18 22:31:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:17,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:31:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:31:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:31:17,865 INFO L87 Difference]: Start difference. First operand 244 states and 375 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2024-11-18 22:31:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:18,581 INFO L93 Difference]: Finished difference Result 716 states and 1103 transitions. [2024-11-18 22:31:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:31:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 [2024-11-18 22:31:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:18,592 INFO L225 Difference]: With dead ends: 716 [2024-11-18 22:31:18,592 INFO L226 Difference]: Without dead ends: 475 [2024-11-18 22:31:18,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:31:18,596 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 149 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:18,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 813 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:31:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-18 22:31:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 325. [2024-11-18 22:31:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.45) internal successors, (377), 260 states have internal predecessors, (377), 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) [2024-11-18 22:31:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 501 transitions. [2024-11-18 22:31:18,645 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 501 transitions. Word has length 205 [2024-11-18 22:31:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:18,647 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 501 transitions. [2024-11-18 22:31:18,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2024-11-18 22:31:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 501 transitions. [2024-11-18 22:31:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 22:31:18,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:18,653 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] [2024-11-18 22:31:18,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:31:18,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:18,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1813737611, now seen corresponding path program 1 times [2024-11-18 22:31:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:18,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721529731] [2024-11-18 22:31:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:18,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:19,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721529731] [2024-11-18 22:31:19,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721529731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:19,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:19,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:31:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270006284] [2024-11-18 22:31:19,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:19,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:31:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:19,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:31:19,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:31:19,633 INFO L87 Difference]: Start difference. First operand 325 states and 501 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-11-18 22:31:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:20,639 INFO L93 Difference]: Finished difference Result 1135 states and 1725 transitions. [2024-11-18 22:31:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:31:20,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2024-11-18 22:31:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:20,645 INFO L225 Difference]: With dead ends: 1135 [2024-11-18 22:31:20,646 INFO L226 Difference]: Without dead ends: 813 [2024-11-18 22:31:20,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:31:20,648 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 330 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:20,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 814 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:31:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-18 22:31:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 506. [2024-11-18 22:31:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 435 states have (on average 1.4804597701149425) internal successors, (644), 436 states have internal predecessors, (644), 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) [2024-11-18 22:31:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 776 transitions. [2024-11-18 22:31:20,698 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 776 transitions. Word has length 205 [2024-11-18 22:31:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:20,701 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 776 transitions. [2024-11-18 22:31:20,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-11-18 22:31:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 776 transitions. [2024-11-18 22:31:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:31:20,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:20,705 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] [2024-11-18 22:31:20,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:31:20,707 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:20,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1945098992, now seen corresponding path program 1 times [2024-11-18 22:31:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540428845] [2024-11-18 22:31:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:22,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:22,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540428845] [2024-11-18 22:31:22,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540428845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:22,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:22,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:31:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972853148] [2024-11-18 22:31:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:22,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:31:22,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:31:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:31:22,803 INFO L87 Difference]: Start difference. First operand 506 states and 776 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2024-11-18 22:31:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:24,205 INFO L93 Difference]: Finished difference Result 1718 states and 2628 transitions. [2024-11-18 22:31:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:31:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 [2024-11-18 22:31:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:24,215 INFO L225 Difference]: With dead ends: 1718 [2024-11-18 22:31:24,215 INFO L226 Difference]: Without dead ends: 1215 [2024-11-18 22:31:24,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:31:24,218 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 357 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:24,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 754 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 22:31:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-18 22:31:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 634. [2024-11-18 22:31:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 563 states have (on average 1.497335701598579) internal successors, (843), 564 states have internal predecessors, (843), 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) [2024-11-18 22:31:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 975 transitions. [2024-11-18 22:31:24,272 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 975 transitions. Word has length 206 [2024-11-18 22:31:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:24,274 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 975 transitions. [2024-11-18 22:31:24,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2024-11-18 22:31:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 975 transitions. [2024-11-18 22:31:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:31:24,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:24,277 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] [2024-11-18 22:31:24,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:31:24,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:24,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash 665235314, now seen corresponding path program 1 times [2024-11-18 22:31:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:24,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368179390] [2024-11-18 22:31:24,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:24,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368179390] [2024-11-18 22:31:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368179390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:31:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094463986] [2024-11-18 22:31:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:26,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:31:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:31:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:31:26,058 INFO L87 Difference]: Start difference. First operand 634 states and 975 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 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) [2024-11-18 22:31:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:27,846 INFO L93 Difference]: Finished difference Result 1694 states and 2583 transitions. [2024-11-18 22:31:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:31:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 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 [2024-11-18 22:31:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:27,853 INFO L225 Difference]: With dead ends: 1694 [2024-11-18 22:31:27,853 INFO L226 Difference]: Without dead ends: 1063 [2024-11-18 22:31:27,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:31:27,858 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 381 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:27,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 762 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 22:31:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-18 22:31:27,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 671. [2024-11-18 22:31:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 600 states have (on average 1.5033333333333334) internal successors, (902), 601 states have internal predecessors, (902), 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) [2024-11-18 22:31:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1034 transitions. [2024-11-18 22:31:27,908 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1034 transitions. Word has length 206 [2024-11-18 22:31:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:27,912 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1034 transitions. [2024-11-18 22:31:27,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 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) [2024-11-18 22:31:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1034 transitions. [2024-11-18 22:31:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:31:27,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:27,917 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] [2024-11-18 22:31:27,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:31:27,917 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:27,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash -526911056, now seen corresponding path program 1 times [2024-11-18 22:31:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991208781] [2024-11-18 22:31:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:27,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:30,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:30,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991208781] [2024-11-18 22:31:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991208781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:30,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:30,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:31:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144853534] [2024-11-18 22:31:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:30,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:31:30,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:31:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:31:30,186 INFO L87 Difference]: Start difference. First operand 671 states and 1034 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) [2024-11-18 22:31:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:31,264 INFO L93 Difference]: Finished difference Result 1872 states and 2874 transitions. [2024-11-18 22:31:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:31:31,265 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 [2024-11-18 22:31:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:31,271 INFO L225 Difference]: With dead ends: 1872 [2024-11-18 22:31:31,271 INFO L226 Difference]: Without dead ends: 1204 [2024-11-18 22:31:31,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:31:31,275 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 332 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:31,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 559 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:31:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2024-11-18 22:31:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 701. [2024-11-18 22:31:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 630 states have (on average 1.5063492063492063) internal successors, (949), 631 states have internal predecessors, (949), 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) [2024-11-18 22:31:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1081 transitions. [2024-11-18 22:31:31,339 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1081 transitions. Word has length 206 [2024-11-18 22:31:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:31,340 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1081 transitions. [2024-11-18 22:31:31,340 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) [2024-11-18 22:31:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1081 transitions. [2024-11-18 22:31:31,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:31:31,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:31,344 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] [2024-11-18 22:31:31,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:31:31,345 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:31,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash -968980858, now seen corresponding path program 1 times [2024-11-18 22:31:31,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:31,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553890031] [2024-11-18 22:31:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:31,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:32,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:32,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553890031] [2024-11-18 22:31:32,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553890031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:32,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:32,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:31:32,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266907584] [2024-11-18 22:31:32,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:32,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:31:32,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:32,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:31:32,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:31:32,908 INFO L87 Difference]: Start difference. First operand 701 states and 1081 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) [2024-11-18 22:31:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:34,278 INFO L93 Difference]: Finished difference Result 1934 states and 2975 transitions. [2024-11-18 22:31:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:31:34,280 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 [2024-11-18 22:31:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:34,286 INFO L225 Difference]: With dead ends: 1934 [2024-11-18 22:31:34,286 INFO L226 Difference]: Without dead ends: 1236 [2024-11-18 22:31:34,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:31:34,292 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 353 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:34,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 585 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 22:31:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2024-11-18 22:31:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 751. [2024-11-18 22:31:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 680 states have (on average 1.511764705882353) internal successors, (1028), 681 states have internal predecessors, (1028), 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) [2024-11-18 22:31:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1160 transitions. [2024-11-18 22:31:34,337 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1160 transitions. Word has length 206 [2024-11-18 22:31:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:34,338 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1160 transitions. [2024-11-18 22:31:34,338 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) [2024-11-18 22:31:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1160 transitions. [2024-11-18 22:31:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:31:34,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:34,341 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] [2024-11-18 22:31:34,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:31:34,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:34,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1952008314, now seen corresponding path program 1 times [2024-11-18 22:31:34,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716170004] [2024-11-18 22:31:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:34,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:34,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716170004] [2024-11-18 22:31:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716170004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:34,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:34,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:31:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730333090] [2024-11-18 22:31:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:34,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:31:34,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:31:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:31:34,457 INFO L87 Difference]: Start difference. First operand 751 states and 1160 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) [2024-11-18 22:31:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:34,564 INFO L93 Difference]: Finished difference Result 1835 states and 2832 transitions. [2024-11-18 22:31:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:31:34,565 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 [2024-11-18 22:31:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:34,571 INFO L225 Difference]: With dead ends: 1835 [2024-11-18 22:31:34,571 INFO L226 Difference]: Without dead ends: 1087 [2024-11-18 22:31:34,573 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 [2024-11-18 22:31:34,575 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 147 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 456 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 [2024-11-18 22:31:34,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 456 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:31:34,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-18 22:31:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 911. [2024-11-18 22:31:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 840 states have (on average 1.5214285714285714) internal successors, (1278), 841 states have internal predecessors, (1278), 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) [2024-11-18 22:31:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1410 transitions. [2024-11-18 22:31:34,640 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1410 transitions. Word has length 206 [2024-11-18 22:31:34,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:34,641 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1410 transitions. [2024-11-18 22:31:34,641 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) [2024-11-18 22:31:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1410 transitions. [2024-11-18 22:31:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 22:31:34,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:34,645 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] [2024-11-18 22:31:34,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:31:34,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:34,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:34,646 INFO L85 PathProgramCache]: Analyzing trace with hash 555422362, now seen corresponding path program 1 times [2024-11-18 22:31:34,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:34,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122979373] [2024-11-18 22:31:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:34,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122979373] [2024-11-18 22:31:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122979373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:34,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:34,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:31:34,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067368952] [2024-11-18 22:31:34,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:34,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:31:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:34,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:31:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:31:34,841 INFO L87 Difference]: Start difference. First operand 911 states and 1410 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-11-18 22:31:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:34,886 INFO L93 Difference]: Finished difference Result 1717 states and 2657 transitions. [2024-11-18 22:31:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:31:34,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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 [2024-11-18 22:31:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:34,892 INFO L225 Difference]: With dead ends: 1717 [2024-11-18 22:31:34,892 INFO L226 Difference]: Without dead ends: 809 [2024-11-18 22:31:34,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:31:34,895 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:34,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 507 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:31:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-18 22:31:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2024-11-18 22:31:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 738 states have (on average 1.510840108401084) internal successors, (1115), 739 states have internal predecessors, (1115), 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) [2024-11-18 22:31:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1247 transitions. [2024-11-18 22:31:34,933 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1247 transitions. Word has length 207 [2024-11-18 22:31:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:34,934 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1247 transitions. [2024-11-18 22:31:34,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-11-18 22:31:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1247 transitions. [2024-11-18 22:31:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 22:31:34,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:34,938 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] [2024-11-18 22:31:34,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:31:34,938 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:34,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1934106600, now seen corresponding path program 1 times [2024-11-18 22:31:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676836497] [2024-11-18 22:31:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:34,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:35,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676836497] [2024-11-18 22:31:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676836497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:35,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:35,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:31:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169976430] [2024-11-18 22:31:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:35,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:31:35,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:31:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:31:35,176 INFO L87 Difference]: Start difference. First operand 809 states and 1247 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-11-18 22:31:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:35,584 INFO L93 Difference]: Finished difference Result 1915 states and 2948 transitions. [2024-11-18 22:31:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:31:35,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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 [2024-11-18 22:31:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:35,591 INFO L225 Difference]: With dead ends: 1915 [2024-11-18 22:31:35,592 INFO L226 Difference]: Without dead ends: 1109 [2024-11-18 22:31:35,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:31:35,595 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 151 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:35,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 655 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:31:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-11-18 22:31:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 815. [2024-11-18 22:31:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 744 states have (on average 1.5013440860215055) internal successors, (1117), 745 states have internal predecessors, (1117), 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) [2024-11-18 22:31:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1249 transitions. [2024-11-18 22:31:35,647 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1249 transitions. Word has length 207 [2024-11-18 22:31:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:35,648 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1249 transitions. [2024-11-18 22:31:35,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-11-18 22:31:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1249 transitions. [2024-11-18 22:31:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:31:35,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:35,651 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] [2024-11-18 22:31:35,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:31:35,651 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:35,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1388155403, now seen corresponding path program 1 times [2024-11-18 22:31:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405775111] [2024-11-18 22:31:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 22:31:36,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405775111] [2024-11-18 22:31:36,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405775111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:31:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350574908] [2024-11-18 22:31:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:36,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:31:36,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:31:36,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:31:36,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:31:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:36,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 22:31:36,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:31:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-18 22:31:37,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:31:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 22:31:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350574908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:31:38,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:31:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 7] total 20 [2024-11-18 22:31:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187155407] [2024-11-18 22:31:38,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:31:38,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 22:31:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 22:31:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-18 22:31:38,182 INFO L87 Difference]: Start difference. First operand 815 states and 1249 transitions. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 19 states have internal predecessors, (153), 6 states have call successors, (82), 4 states have call predecessors, (82), 7 states have return successors, (83), 6 states have call predecessors, (83), 6 states have call successors, (83) [2024-11-18 22:31:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:39,531 INFO L93 Difference]: Finished difference Result 1667 states and 2518 transitions. [2024-11-18 22:31:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 22:31:39,532 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 19 states have internal predecessors, (153), 6 states have call successors, (82), 4 states have call predecessors, (82), 7 states have return successors, (83), 6 states have call predecessors, (83), 6 states have call successors, (83) Word has length 208 [2024-11-18 22:31:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:39,537 INFO L225 Difference]: With dead ends: 1667 [2024-11-18 22:31:39,537 INFO L226 Difference]: Without dead ends: 855 [2024-11-18 22:31:39,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1464, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 22:31:39,540 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 591 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:39,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1078 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:31:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-18 22:31:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 636. [2024-11-18 22:31:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 525 states have (on average 1.420952380952381) internal successors, (746), 527 states have internal predecessors, (746), 97 states have call successors, (97), 13 states have call predecessors, (97), 13 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 22:31:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 940 transitions. [2024-11-18 22:31:39,600 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 940 transitions. Word has length 208 [2024-11-18 22:31:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:39,601 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 940 transitions. [2024-11-18 22:31:39,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 19 states have internal predecessors, (153), 6 states have call successors, (82), 4 states have call predecessors, (82), 7 states have return successors, (83), 6 states have call predecessors, (83), 6 states have call successors, (83) [2024-11-18 22:31:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 940 transitions. [2024-11-18 22:31:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:31:39,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:39,604 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] [2024-11-18 22:31:39,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:31:39,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 22:31:39,805 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:39,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:39,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2056749776, now seen corresponding path program 1 times [2024-11-18 22:31:39,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391364987] [2024-11-18 22:31:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:44,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:44,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391364987] [2024-11-18 22:31:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391364987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:44,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:44,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:31:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607666009] [2024-11-18 22:31:44,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:44,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:31:44,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:31:44,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:31:44,194 INFO L87 Difference]: Start difference. First operand 636 states and 940 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) [2024-11-18 22:31:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:46,407 INFO L93 Difference]: Finished difference Result 1680 states and 2458 transitions. [2024-11-18 22:31:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:31:46,409 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 [2024-11-18 22:31:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:46,417 INFO L225 Difference]: With dead ends: 1680 [2024-11-18 22:31:46,417 INFO L226 Difference]: Without dead ends: 1116 [2024-11-18 22:31:46,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:31:46,420 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 408 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:46,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 606 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 22:31:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-11-18 22:31:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 653. [2024-11-18 22:31:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 542 states have (on average 1.429889298892989) internal successors, (775), 544 states have internal predecessors, (775), 97 states have call successors, (97), 13 states have call predecessors, (97), 13 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 22:31:46,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 969 transitions. [2024-11-18 22:31:46,484 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 969 transitions. Word has length 208 [2024-11-18 22:31:46,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:46,484 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 969 transitions. [2024-11-18 22:31:46,485 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) [2024-11-18 22:31:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 969 transitions. [2024-11-18 22:31:46,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:31:46,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:46,487 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] [2024-11-18 22:31:46,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:31:46,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:46,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1045632526, now seen corresponding path program 1 times [2024-11-18 22:31:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441358557] [2024-11-18 22:31:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:49,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441358557] [2024-11-18 22:31:49,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441358557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:49,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:49,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:31:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390192073] [2024-11-18 22:31:49,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:49,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:31:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:49,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:31:49,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:31:49,334 INFO L87 Difference]: Start difference. First operand 653 states and 969 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) [2024-11-18 22:31:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:51,286 INFO L93 Difference]: Finished difference Result 1693 states and 2491 transitions. [2024-11-18 22:31:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:31:51,287 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 [2024-11-18 22:31:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:51,294 INFO L225 Difference]: With dead ends: 1693 [2024-11-18 22:31:51,297 INFO L226 Difference]: Without dead ends: 1112 [2024-11-18 22:31:51,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:31:51,303 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 363 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:51,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 828 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 22:31:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-18 22:31:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 653. [2024-11-18 22:31:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 542 states have (on average 1.429889298892989) internal successors, (775), 544 states have internal predecessors, (775), 97 states have call successors, (97), 13 states have call predecessors, (97), 13 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 22:31:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 969 transitions. [2024-11-18 22:31:51,366 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 969 transitions. Word has length 208 [2024-11-18 22:31:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:51,367 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 969 transitions. [2024-11-18 22:31:51,367 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) [2024-11-18 22:31:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 969 transitions. [2024-11-18 22:31:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:31:51,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:51,369 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] [2024-11-18 22:31:51,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 22:31:51,370 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:51,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash 24564172, now seen corresponding path program 1 times [2024-11-18 22:31:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:51,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481545713] [2024-11-18 22:31:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:52,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481545713] [2024-11-18 22:31:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481545713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:52,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:52,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:31:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718700844] [2024-11-18 22:31:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:52,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:31:52,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:31:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:31:52,197 INFO L87 Difference]: Start difference. First operand 653 states and 969 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 22:31:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:53,712 INFO L93 Difference]: Finished difference Result 2358 states and 3447 transitions. [2024-11-18 22:31:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:31:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 208 [2024-11-18 22:31:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:53,722 INFO L225 Difference]: With dead ends: 2358 [2024-11-18 22:31:53,722 INFO L226 Difference]: Without dead ends: 1777 [2024-11-18 22:31:53,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-18 22:31:53,727 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 665 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:53,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 899 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 22:31:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2024-11-18 22:31:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1277. [2024-11-18 22:31:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1092 states have (on average 1.4368131868131868) internal successors, (1569), 1095 states have internal predecessors, (1569), 163 states have call successors, (163), 21 states have call predecessors, (163), 21 states have return successors, (163), 160 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-18 22:31:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1895 transitions. [2024-11-18 22:31:53,841 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1895 transitions. Word has length 208 [2024-11-18 22:31:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:53,842 INFO L471 AbstractCegarLoop]: Abstraction has 1277 states and 1895 transitions. [2024-11-18 22:31:53,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 22:31:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1895 transitions. [2024-11-18 22:31:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:31:53,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:53,844 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] [2024-11-18 22:31:53,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 22:31:53,844 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:53,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 22728713, now seen corresponding path program 1 times [2024-11-18 22:31:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870999620] [2024-11-18 22:31:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:53,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:54,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870999620] [2024-11-18 22:31:54,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870999620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:54,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:54,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:31:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063488904] [2024-11-18 22:31:54,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:54,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:31:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:31:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:31:54,944 INFO L87 Difference]: Start difference. First operand 1277 states and 1895 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2024-11-18 22:31:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:55,877 INFO L93 Difference]: Finished difference Result 3045 states and 4518 transitions. [2024-11-18 22:31:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:31:55,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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 [2024-11-18 22:31:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:55,888 INFO L225 Difference]: With dead ends: 3045 [2024-11-18 22:31:55,888 INFO L226 Difference]: Without dead ends: 1840 [2024-11-18 22:31:55,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:31:55,893 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 200 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:55,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 497 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:31:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2024-11-18 22:31:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1330. [2024-11-18 22:31:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1145 states have (on average 1.4445414847161573) internal successors, (1654), 1148 states have internal predecessors, (1654), 163 states have call successors, (163), 21 states have call predecessors, (163), 21 states have return successors, (163), 160 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-18 22:31:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1980 transitions. [2024-11-18 22:31:56,049 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1980 transitions. Word has length 208 [2024-11-18 22:31:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:31:56,050 INFO L471 AbstractCegarLoop]: Abstraction has 1330 states and 1980 transitions. [2024-11-18 22:31:56,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2024-11-18 22:31:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1980 transitions. [2024-11-18 22:31:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:31:56,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:31:56,055 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] [2024-11-18 22:31:56,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 22:31:56,055 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:31:56,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:31:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -960298743, now seen corresponding path program 1 times [2024-11-18 22:31:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:31:56,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326868132] [2024-11-18 22:31:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:31:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:31:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:31:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:31:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:31:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326868132] [2024-11-18 22:31:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326868132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:31:57,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:31:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 22:31:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214929718] [2024-11-18 22:31:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:31:57,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 22:31:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:31:57,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 22:31:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:31:57,988 INFO L87 Difference]: Start difference. First operand 1330 states and 1980 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) [2024-11-18 22:31:59,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:31:59,948 INFO L93 Difference]: Finished difference Result 2318 states and 3423 transitions. [2024-11-18 22:31:59,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 22:31:59,949 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 [2024-11-18 22:31:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:31:59,959 INFO L225 Difference]: With dead ends: 2318 [2024-11-18 22:31:59,959 INFO L226 Difference]: Without dead ends: 1979 [2024-11-18 22:31:59,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-18 22:31:59,962 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 484 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:31:59,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1409 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 22:31:59,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2024-11-18 22:32:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1350. [2024-11-18 22:32:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1165 states have (on average 1.4446351931330472) internal successors, (1683), 1168 states have internal predecessors, (1683), 163 states have call successors, (163), 21 states have call predecessors, (163), 21 states have return successors, (163), 160 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-18 22:32:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 2009 transitions. [2024-11-18 22:32:00,100 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 2009 transitions. Word has length 208 [2024-11-18 22:32:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:00,102 INFO L471 AbstractCegarLoop]: Abstraction has 1350 states and 2009 transitions. [2024-11-18 22:32:00,102 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) [2024-11-18 22:32:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 2009 transitions. [2024-11-18 22:32:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:32:00,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:00,104 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] [2024-11-18 22:32:00,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 22:32:00,105 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:00,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1971415993, now seen corresponding path program 1 times [2024-11-18 22:32:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:00,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283355939] [2024-11-18 22:32:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:00,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:32:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:01,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283355939] [2024-11-18 22:32:01,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283355939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:01,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:01,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:32:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650534898] [2024-11-18 22:32:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:01,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:32:01,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:01,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:32:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:32:01,588 INFO L87 Difference]: Start difference. First operand 1350 states and 2009 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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) [2024-11-18 22:32:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:02,758 INFO L93 Difference]: Finished difference Result 3214 states and 4763 transitions. [2024-11-18 22:32:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:32:02,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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 [2024-11-18 22:32:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:02,767 INFO L225 Difference]: With dead ends: 3214 [2024-11-18 22:32:02,767 INFO L226 Difference]: Without dead ends: 1936 [2024-11-18 22:32:02,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:32:02,770 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 216 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:02,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 647 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 22:32:02,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2024-11-18 22:32:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1489. [2024-11-18 22:32:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1304 states have (on average 1.4493865030674846) internal successors, (1890), 1307 states have internal predecessors, (1890), 163 states have call successors, (163), 21 states have call predecessors, (163), 21 states have return successors, (163), 160 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-18 22:32:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2216 transitions. [2024-11-18 22:32:02,937 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2216 transitions. Word has length 208 [2024-11-18 22:32:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:02,938 INFO L471 AbstractCegarLoop]: Abstraction has 1489 states and 2216 transitions. [2024-11-18 22:32:02,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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) [2024-11-18 22:32:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2216 transitions. [2024-11-18 22:32:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 22:32:02,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:02,940 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] [2024-11-18 22:32:02,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 22:32:02,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:02,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1400451765, now seen corresponding path program 1 times [2024-11-18 22:32:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744907287] [2024-11-18 22:32:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 22:32:03,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:03,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744907287] [2024-11-18 22:32:03,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744907287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:32:03,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132345482] [2024-11-18 22:32:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:03,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:32:03,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:03,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:32:03,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:32:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:03,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 22:32:03,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:32:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 482 proven. 150 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2024-11-18 22:32:04,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:32:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 22:32:04,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132345482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:32:04,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:32:04,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2024-11-18 22:32:04,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260750568] [2024-11-18 22:32:04,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:32:04,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:32:04,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:32:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:32:04,394 INFO L87 Difference]: Start difference. First operand 1489 states and 2216 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2024-11-18 22:32:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:05,947 INFO L93 Difference]: Finished difference Result 3269 states and 4776 transitions. [2024-11-18 22:32:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 22:32:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 209 [2024-11-18 22:32:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:05,958 INFO L225 Difference]: With dead ends: 3269 [2024-11-18 22:32:05,958 INFO L226 Difference]: Without dead ends: 1852 [2024-11-18 22:32:05,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=1055, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 22:32:05,963 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 517 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:05,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 752 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:32:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2024-11-18 22:32:06,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1300. [2024-11-18 22:32:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1077 states have (on average 1.393686165273909) internal successors, (1501), 1082 states have internal predecessors, (1501), 183 states have call successors, (183), 39 states have call predecessors, (183), 39 states have return successors, (183), 178 states have call predecessors, (183), 183 states have call successors, (183) [2024-11-18 22:32:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1867 transitions. [2024-11-18 22:32:06,130 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1867 transitions. Word has length 209 [2024-11-18 22:32:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:06,130 INFO L471 AbstractCegarLoop]: Abstraction has 1300 states and 1867 transitions. [2024-11-18 22:32:06,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2024-11-18 22:32:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1867 transitions. [2024-11-18 22:32:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-18 22:32:06,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:06,133 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, 1] [2024-11-18 22:32:06,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 22:32:06,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:32:06,334 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:06,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1606907795, now seen corresponding path program 1 times [2024-11-18 22:32:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:06,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569166685] [2024-11-18 22:32:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:06,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:32:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569166685] [2024-11-18 22:32:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569166685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:09,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:09,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 22:32:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910066207] [2024-11-18 22:32:09,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:09,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 22:32:09,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 22:32:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:32:09,009 INFO L87 Difference]: Start difference. First operand 1300 states and 1867 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2024-11-18 22:32:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:10,156 INFO L93 Difference]: Finished difference Result 2278 states and 3273 transitions. [2024-11-18 22:32:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 22:32:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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 210 [2024-11-18 22:32:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:10,165 INFO L225 Difference]: With dead ends: 2278 [2024-11-18 22:32:10,165 INFO L226 Difference]: Without dead ends: 1700 [2024-11-18 22:32:10,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:32:10,168 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 234 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:10,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 783 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:32:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2024-11-18 22:32:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1319. [2024-11-18 22:32:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1096 states have (on average 1.395985401459854) internal successors, (1530), 1101 states have internal predecessors, (1530), 183 states have call successors, (183), 39 states have call predecessors, (183), 39 states have return successors, (183), 178 states have call predecessors, (183), 183 states have call successors, (183) [2024-11-18 22:32:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1896 transitions. [2024-11-18 22:32:10,340 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1896 transitions. Word has length 210 [2024-11-18 22:32:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:10,341 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1896 transitions. [2024-11-18 22:32:10,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2024-11-18 22:32:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1896 transitions. [2024-11-18 22:32:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-18 22:32:10,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:10,343 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, 1] [2024-11-18 22:32:10,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 22:32:10,343 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:10,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash 595790545, now seen corresponding path program 1 times [2024-11-18 22:32:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902124016] [2024-11-18 22:32:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 22:32:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:17,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902124016] [2024-11-18 22:32:17,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902124016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:17,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:17,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 22:32:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337392757] [2024-11-18 22:32:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:17,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 22:32:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 22:32:17,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-18 22:32:17,420 INFO L87 Difference]: Start difference. First operand 1319 states and 1896 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)