./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-86.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_fillercode_fillercodestructure_filler-ps-ci_file-86.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 37de0228bdc926eeed8c36d9a0d9df874217b43056bdb710b9397461ea004e55 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:23:05,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:23:05,853 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:23:05,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:23:05,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:23:05,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:23:05,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:23:05,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:23:05,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:23:05,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:23:05,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:23:05,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:23:05,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:23:05,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:23:05,882 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:23:05,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:23:05,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:23:05,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:23:05,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:23:05,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:23:05,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:23:05,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:23:05,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:23:05,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:23:05,886 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:23:05,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:23:05,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:23:05,887 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:23:05,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:23:05,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:23:05,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:23:05,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:23:05,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:23:05,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:23:05,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:23:05,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:23:05,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:23:05,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:23:05,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:23:05,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:23:05,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:23:05,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:23:05,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37de0228bdc926eeed8c36d9a0d9df874217b43056bdb710b9397461ea004e55 [2024-11-18 21:23:06,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:23:06,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:23:06,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:23:06,188 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:23:06,188 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:23:06,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-86.i [2024-11-18 21:23:07,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:23:07,861 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:23:07,862 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-86.i [2024-11-18 21:23:07,872 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20022675a/a75d12b6ecf84402b9c734364740fc4c/FLAGc9e2e3f00 [2024-11-18 21:23:07,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20022675a/a75d12b6ecf84402b9c734364740fc4c [2024-11-18 21:23:07,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:23:07,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:23:07,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:23:07,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:23:07,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:23:07,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:23:07" (1/1) ... [2024-11-18 21:23:07,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4e4ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:07, skipping insertion in model container [2024-11-18 21:23:07,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:23:07" (1/1) ... [2024-11-18 21:23:07,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:23:08,123 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_fillercode_fillercodestructure_filler-ps-ci_file-86.i[919,932] [2024-11-18 21:23:08,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:23:08,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:23:08,291 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_fillercode_fillercodestructure_filler-ps-ci_file-86.i[919,932] [2024-11-18 21:23:08,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:23:08,356 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:23:08,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08 WrapperNode [2024-11-18 21:23:08,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:23:08,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:23:08,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:23:08,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:23:08,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,409 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 236 [2024-11-18 21:23:08,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:23:08,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:23:08,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:23:08,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:23:08,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,444 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 21:23:08,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:23:08,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:23:08,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:23:08,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:23:08,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (1/1) ... [2024-11-18 21:23:08,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:23:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:23:08,536 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 21:23:08,542 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 21:23:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:23:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:23:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:23:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:23:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:23:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:23:08,656 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:23:08,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:23:08,995 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-18 21:23:08,996 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:23:09,009 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:23:09,009 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:23:09,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:23:09 BoogieIcfgContainer [2024-11-18 21:23:09,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:23:09,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:23:09,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:23:09,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:23:09,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:23:07" (1/3) ... [2024-11-18 21:23:09,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7586cec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:23:09, skipping insertion in model container [2024-11-18 21:23:09,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:08" (2/3) ... [2024-11-18 21:23:09,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7586cec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:23:09, skipping insertion in model container [2024-11-18 21:23:09,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:23:09" (3/3) ... [2024-11-18 21:23:09,018 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-86.i [2024-11-18 21:23:09,033 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:23:09,034 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:23:09,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:23:09,097 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;@4eda0387, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:23:09,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:23:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 69 states have internal predecessors, (101), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 21:23:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 21:23:09,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:09,115 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:09,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:09,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2015951129, now seen corresponding path program 1 times [2024-11-18 21:23:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914087195] [2024-11-18 21:23:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:09,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-18 21:23:09,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914087195] [2024-11-18 21:23:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914087195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:23:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291739853] [2024-11-18 21:23:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:09,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:23:09,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:23:09,502 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 21:23:09,503 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 21:23:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:09,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:23:09,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:23:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-18 21:23:09,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:23:09,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291739853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:09,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:23:09,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:23:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649499459] [2024-11-18 21:23:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:09,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:23:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:23:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:23:09,835 INFO L87 Difference]: Start difference. First operand has 98 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 69 states have internal predecessors, (101), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 21:23:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:09,874 INFO L93 Difference]: Finished difference Result 189 states and 331 transitions. [2024-11-18 21:23:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:23:09,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2024-11-18 21:23:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:09,886 INFO L225 Difference]: With dead ends: 189 [2024-11-18 21:23:09,886 INFO L226 Difference]: Without dead ends: 94 [2024-11-18 21:23:09,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 176 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 21:23:09,894 INFO L432 NwaCegarLoop]: 147 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, 147 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 21:23:09,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:23:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-18 21:23:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-18 21:23:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 21:23:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 147 transitions. [2024-11-18 21:23:09,943 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 147 transitions. Word has length 175 [2024-11-18 21:23:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:09,944 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 147 transitions. [2024-11-18 21:23:09,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 21:23:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 147 transitions. [2024-11-18 21:23:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 21:23:09,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:09,948 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:09,963 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 21:23:10,149 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 21:23:10,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:10,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash 476781609, now seen corresponding path program 1 times [2024-11-18 21:23:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:10,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602628515] [2024-11-18 21:23:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602628515] [2024-11-18 21:23:10,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602628515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:10,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:10,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:23:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272406994] [2024-11-18 21:23:10,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:10,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:23:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:23:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:23:10,374 INFO L87 Difference]: Start difference. First operand 94 states and 147 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:10,405 INFO L93 Difference]: Finished difference Result 186 states and 293 transitions. [2024-11-18 21:23:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:23:10,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 21:23:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:10,409 INFO L225 Difference]: With dead ends: 186 [2024-11-18 21:23:10,409 INFO L226 Difference]: Without dead ends: 95 [2024-11-18 21:23:10,410 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 21:23:10,411 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:10,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:23:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-18 21:23:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-18 21:23:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 21:23:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 148 transitions. [2024-11-18 21:23:10,422 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 148 transitions. Word has length 175 [2024-11-18 21:23:10,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:10,424 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 148 transitions. [2024-11-18 21:23:10,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 148 transitions. [2024-11-18 21:23:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 21:23:10,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:10,427 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:10,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:23:10,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:10,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1517363097, now seen corresponding path program 1 times [2024-11-18 21:23:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847893616] [2024-11-18 21:23:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:10,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:10,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847893616] [2024-11-18 21:23:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847893616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:23:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791871137] [2024-11-18 21:23:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:10,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:23:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:23:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:23:10,780 INFO L87 Difference]: Start difference. First operand 95 states and 148 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:11,031 INFO L93 Difference]: Finished difference Result 280 states and 439 transitions. [2024-11-18 21:23:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:23:11,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 21:23:11,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:11,036 INFO L225 Difference]: With dead ends: 280 [2024-11-18 21:23:11,036 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 21:23:11,037 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 21:23:11,038 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 149 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:11,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 503 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:23:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 21:23:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2024-11-18 21:23:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.4054054054054055) internal successors, (156), 111 states have internal predecessors, (156), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 21:23:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 264 transitions. [2024-11-18 21:23:11,079 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 264 transitions. Word has length 175 [2024-11-18 21:23:11,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:11,081 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 264 transitions. [2024-11-18 21:23:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 264 transitions. [2024-11-18 21:23:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 21:23:11,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:11,088 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:11,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:23:11,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:11,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1766486949, now seen corresponding path program 1 times [2024-11-18 21:23:11,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:11,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888777149] [2024-11-18 21:23:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:11,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888777149] [2024-11-18 21:23:18,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888777149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:18,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:18,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:23:18,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692138617] [2024-11-18 21:23:18,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:18,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:23:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:18,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:23:18,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:23:18,707 INFO L87 Difference]: Start difference. First operand 168 states and 264 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:21,323 INFO L93 Difference]: Finished difference Result 357 states and 549 transitions. [2024-11-18 21:23:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:23:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 21:23:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:21,327 INFO L225 Difference]: With dead ends: 357 [2024-11-18 21:23:21,327 INFO L226 Difference]: Without dead ends: 265 [2024-11-18 21:23:21,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2024-11-18 21:23:21,329 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 524 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:21,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1058 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 21:23:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-18 21:23:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 210. [2024-11-18 21:23:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 153 states have (on average 1.4313725490196079) internal successors, (219), 153 states have internal predecessors, (219), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 21:23:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 327 transitions. [2024-11-18 21:23:21,354 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 327 transitions. Word has length 175 [2024-11-18 21:23:21,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:21,355 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 327 transitions. [2024-11-18 21:23:21,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 327 transitions. [2024-11-18 21:23:21,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 21:23:21,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:21,357 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:21,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:23:21,358 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:21,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1985341667, now seen corresponding path program 1 times [2024-11-18 21:23:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644925502] [2024-11-18 21:23:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:21,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644925502] [2024-11-18 21:23:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644925502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:21,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:21,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:23:21,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048448895] [2024-11-18 21:23:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:21,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:23:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:23:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:23:21,808 INFO L87 Difference]: Start difference. First operand 210 states and 327 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:21,883 INFO L93 Difference]: Finished difference Result 486 states and 759 transitions. [2024-11-18 21:23:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:23:21,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 21:23:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:21,886 INFO L225 Difference]: With dead ends: 486 [2024-11-18 21:23:21,889 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 21:23:21,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 21:23:21,890 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 275 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:21,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 556 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:23:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 21:23:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 355. [2024-11-18 21:23:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 270 states have (on average 1.4666666666666666) internal successors, (396), 270 states have internal predecessors, (396), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:23:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 558 transitions. [2024-11-18 21:23:21,933 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 558 transitions. Word has length 175 [2024-11-18 21:23:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:21,934 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 558 transitions. [2024-11-18 21:23:21,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 558 transitions. [2024-11-18 21:23:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 21:23:21,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:21,937 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:21,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:23:21,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:21,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1232134917, now seen corresponding path program 1 times [2024-11-18 21:23:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177592445] [2024-11-18 21:23:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:22,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177592445] [2024-11-18 21:23:22,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177592445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:22,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:22,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:23:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849135457] [2024-11-18 21:23:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:22,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:23:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:23:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:23:22,197 INFO L87 Difference]: Start difference. First operand 355 states and 558 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:22,237 INFO L93 Difference]: Finished difference Result 604 states and 950 transitions. [2024-11-18 21:23:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:23:22,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-18 21:23:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:22,241 INFO L225 Difference]: With dead ends: 604 [2024-11-18 21:23:22,241 INFO L226 Difference]: Without dead ends: 364 [2024-11-18 21:23:22,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:23:22,243 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:22,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 272 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:23:22,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-18 21:23:22,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 355. [2024-11-18 21:23:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 270 states have (on average 1.4555555555555555) internal successors, (393), 270 states have internal predecessors, (393), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:23:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 555 transitions. [2024-11-18 21:23:22,262 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 555 transitions. Word has length 176 [2024-11-18 21:23:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:22,262 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 555 transitions. [2024-11-18 21:23:22,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 555 transitions. [2024-11-18 21:23:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 21:23:22,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:22,265 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:22,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:23:22,265 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:22,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:22,266 INFO L85 PathProgramCache]: Analyzing trace with hash 542872445, now seen corresponding path program 1 times [2024-11-18 21:23:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833134203] [2024-11-18 21:23:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:22,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:27,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:27,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833134203] [2024-11-18 21:23:27,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833134203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:27,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:27,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:23:27,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399565774] [2024-11-18 21:23:27,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:27,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:23:27,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:23:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:23:27,426 INFO L87 Difference]: Start difference. First operand 355 states and 555 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:30,789 INFO L93 Difference]: Finished difference Result 652 states and 999 transitions. [2024-11-18 21:23:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 21:23:30,792 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-18 21:23:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:30,798 INFO L225 Difference]: With dead ends: 652 [2024-11-18 21:23:30,802 INFO L226 Difference]: Without dead ends: 415 [2024-11-18 21:23:30,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 21:23:30,810 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 361 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:30,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 978 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 21:23:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-18 21:23:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 356. [2024-11-18 21:23:30,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 271 states have (on average 1.4538745387453875) internal successors, (394), 271 states have internal predecessors, (394), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:23:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 556 transitions. [2024-11-18 21:23:30,865 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 556 transitions. Word has length 176 [2024-11-18 21:23:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:30,866 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 556 transitions. [2024-11-18 21:23:30,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 556 transitions. [2024-11-18 21:23:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 21:23:30,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:30,871 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:30,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:23:30,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:30,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1019977503, now seen corresponding path program 1 times [2024-11-18 21:23:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:30,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205273223] [2024-11-18 21:23:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205273223] [2024-11-18 21:23:39,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205273223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:39,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:23:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936369429] [2024-11-18 21:23:39,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:39,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:23:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:23:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:23:39,652 INFO L87 Difference]: Start difference. First operand 356 states and 556 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:43,683 INFO L93 Difference]: Finished difference Result 413 states and 620 transitions. [2024-11-18 21:23:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 21:23:43,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-18 21:23:43,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:43,688 INFO L225 Difference]: With dead ends: 413 [2024-11-18 21:23:43,689 INFO L226 Difference]: Without dead ends: 411 [2024-11-18 21:23:43,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 21:23:43,690 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 485 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:43,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 998 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 21:23:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-18 21:23:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 359. [2024-11-18 21:23:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 274 states have (on average 1.4525547445255473) internal successors, (398), 274 states have internal predecessors, (398), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:23:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 560 transitions. [2024-11-18 21:23:43,716 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 560 transitions. Word has length 176 [2024-11-18 21:23:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:43,717 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 560 transitions. [2024-11-18 21:23:43,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 560 transitions. [2024-11-18 21:23:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 21:23:43,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:43,719 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:43,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:23:43,719 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:43,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1706688612, now seen corresponding path program 1 times [2024-11-18 21:23:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:43,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929106843] [2024-11-18 21:23:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:23:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:23:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:23:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929106843] [2024-11-18 21:23:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929106843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:23:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:23:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:23:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421583502] [2024-11-18 21:23:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:23:51,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:23:51,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:23:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:23:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:23:51,177 INFO L87 Difference]: Start difference. First operand 359 states and 560 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:23:54,701 INFO L93 Difference]: Finished difference Result 430 states and 641 transitions. [2024-11-18 21:23:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 21:23:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-18 21:23:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:23:54,705 INFO L225 Difference]: With dead ends: 430 [2024-11-18 21:23:54,705 INFO L226 Difference]: Without dead ends: 428 [2024-11-18 21:23:54,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2024-11-18 21:23:54,706 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 334 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:23:54,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1223 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:23:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-18 21:23:54,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 371. [2024-11-18 21:23:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 286 states have (on average 1.444055944055944) internal successors, (413), 286 states have internal predecessors, (413), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:23:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 575 transitions. [2024-11-18 21:23:54,724 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 575 transitions. Word has length 176 [2024-11-18 21:23:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:23:54,725 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 575 transitions. [2024-11-18 21:23:54,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:23:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 575 transitions. [2024-11-18 21:23:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 21:23:54,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:23:54,726 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:54,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:23:54,726 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:23:54,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:23:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1026630242, now seen corresponding path program 1 times [2024-11-18 21:23:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:23:54,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171027004] [2024-11-18 21:23:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:23:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:23:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:24:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:24:00,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:24:00,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171027004] [2024-11-18 21:24:00,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171027004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:24:00,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:24:00,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:24:00,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573768511] [2024-11-18 21:24:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:24:00,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:24:00,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:24:00,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:24:00,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:24:00,122 INFO L87 Difference]: Start difference. First operand 371 states and 575 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:24:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:24:03,817 INFO L93 Difference]: Finished difference Result 424 states and 635 transitions. [2024-11-18 21:24:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 21:24:03,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-18 21:24:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:24:03,821 INFO L225 Difference]: With dead ends: 424 [2024-11-18 21:24:03,821 INFO L226 Difference]: Without dead ends: 422 [2024-11-18 21:24:03,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=251, Invalid=679, Unknown=0, NotChecked=0, Total=930 [2024-11-18 21:24:03,828 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 327 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:24:03,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1115 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 21:24:03,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-18 21:24:03,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 371. [2024-11-18 21:24:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 286 states have (on average 1.444055944055944) internal successors, (413), 286 states have internal predecessors, (413), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:24:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 575 transitions. [2024-11-18 21:24:03,872 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 575 transitions. Word has length 176 [2024-11-18 21:24:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:24:03,873 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 575 transitions. [2024-11-18 21:24:03,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:24:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 575 transitions. [2024-11-18 21:24:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 21:24:03,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:24:03,880 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:03,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 21:24:03,880 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:24:03,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:24:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash -297321463, now seen corresponding path program 1 times [2024-11-18 21:24:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:24:03,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457455628] [2024-11-18 21:24:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:24:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:24:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:24:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:24:08,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:24:08,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457455628] [2024-11-18 21:24:08,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457455628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:24:08,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:24:08,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:24:08,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926488108] [2024-11-18 21:24:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:24:08,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:24:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:24:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:24:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:24:08,268 INFO L87 Difference]: Start difference. First operand 371 states and 575 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:24:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:24:10,761 INFO L93 Difference]: Finished difference Result 418 states and 626 transitions. [2024-11-18 21:24:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 21:24:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-18 21:24:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:24:10,764 INFO L225 Difference]: With dead ends: 418 [2024-11-18 21:24:10,764 INFO L226 Difference]: Without dead ends: 416 [2024-11-18 21:24:10,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 21:24:10,764 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 376 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:24:10,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 922 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:24:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-18 21:24:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 368. [2024-11-18 21:24:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 283 states have (on average 1.4452296819787986) internal successors, (409), 283 states have internal predecessors, (409), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:24:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 571 transitions. [2024-11-18 21:24:10,780 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 571 transitions. Word has length 177 [2024-11-18 21:24:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:24:10,781 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 571 transitions. [2024-11-18 21:24:10,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:24:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 571 transitions. [2024-11-18 21:24:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 21:24:10,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:24:10,783 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:10,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:24:10,783 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:24:10,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:24:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 284792409, now seen corresponding path program 1 times [2024-11-18 21:24:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:24:10,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358855927] [2024-11-18 21:24:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:24:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:24:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:24:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:24:19,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:24:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358855927] [2024-11-18 21:24:19,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358855927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:24:19,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:24:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:24:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036983408] [2024-11-18 21:24:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:24:19,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:24:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:24:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:24:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:24:19,790 INFO L87 Difference]: Start difference. First operand 368 states and 571 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:24:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:24:23,092 INFO L93 Difference]: Finished difference Result 446 states and 661 transitions. [2024-11-18 21:24:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 21:24:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-18 21:24:23,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:24:23,100 INFO L225 Difference]: With dead ends: 446 [2024-11-18 21:24:23,100 INFO L226 Difference]: Without dead ends: 444 [2024-11-18 21:24:23,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=318, Invalid=804, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 21:24:23,101 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 247 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:24:23,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 954 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 21:24:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-18 21:24:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 372. [2024-11-18 21:24:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 287 states have (on average 1.4425087108013936) internal successors, (414), 287 states have internal predecessors, (414), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:24:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 576 transitions. [2024-11-18 21:24:23,117 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 576 transitions. Word has length 177 [2024-11-18 21:24:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:24:23,118 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 576 transitions. [2024-11-18 21:24:23,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:24:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 576 transitions. [2024-11-18 21:24:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 21:24:23,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:24:23,119 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:23,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:24:23,120 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:24:23,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:24:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 964850779, now seen corresponding path program 1 times [2024-11-18 21:24:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:24:23,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845697729] [2024-11-18 21:24:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:24:23,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:24:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:24:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:24:31,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:24:31,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845697729] [2024-11-18 21:24:31,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845697729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:24:31,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:24:31,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 21:24:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70577828] [2024-11-18 21:24:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:24:31,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 21:24:31,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:24:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 21:24:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2024-11-18 21:24:31,808 INFO L87 Difference]: Start difference. First operand 372 states and 576 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27)