./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f70a8d930c5557b68c07ef577122d328ec387effee8f919b747045b88161608 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:58:34,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:58:34,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 18:58:34,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:58:34,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:58:34,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:58:34,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:58:34,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:58:34,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:58:34,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:58:34,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:58:34,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:58:34,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:58:34,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:58:34,921 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:58:34,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:58:34,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:58:34,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 18:58:34,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:58:34,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 18:58:34,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:58:34,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:58:34,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:58:34,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:58:34,928 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:58:34,928 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 18:58:34,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:58:34,928 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:58:34,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:58:34,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:58:34,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:58:34,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:58:34,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:58:34,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:58:34,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:58:34,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:58:34,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:58:34,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:58:34,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:58:34,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:58:34,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:58:34,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:58:34,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f70a8d930c5557b68c07ef577122d328ec387effee8f919b747045b88161608 [2024-11-18 18:58:35,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:58:35,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:58:35,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:58:35,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:58:35,199 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:58:35,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i [2024-11-18 18:58:36,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:58:36,826 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:58:36,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i [2024-11-18 18:58:36,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411ccca97/6ee48f8ca4f8442c85b0b8df17c5762d/FLAG102c9bb71 [2024-11-18 18:58:36,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411ccca97/6ee48f8ca4f8442c85b0b8df17c5762d [2024-11-18 18:58:36,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:58:36,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:58:36,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:58:36,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:58:36,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:58:36,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:58:36" (1/1) ... [2024-11-18 18:58:36,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193eb11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:36, skipping insertion in model container [2024-11-18 18:58:36,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:58:36" (1/1) ... [2024-11-18 18:58:36,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:58:37,070 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_fillercodesize_normal_file-34.i[913,926] [2024-11-18 18:58:37,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:58:37,156 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:58:37,171 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_fillercodesize_normal_file-34.i[913,926] [2024-11-18 18:58:37,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:58:37,224 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:58:37,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37 WrapperNode [2024-11-18 18:58:37,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:58:37,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:58:37,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:58:37,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:58:37,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,281 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176 [2024-11-18 18:58:37,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:58:37,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:58:37,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:58:37,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:58:37,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,323 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 18:58:37,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:58:37,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:58:37,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:58:37,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:58:37,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (1/1) ... [2024-11-18 18:58:37,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:58:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:58:37,391 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 18:58:37,395 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 18:58:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:58:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 18:58:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 18:58:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:58:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:58:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:58:37,538 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:58:37,541 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:58:37,939 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-18 18:58:37,939 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:58:37,957 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:58:37,957 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:58:37,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:58:37 BoogieIcfgContainer [2024-11-18 18:58:37,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:58:37,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:58:37,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:58:37,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:58:37,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:58:36" (1/3) ... [2024-11-18 18:58:37,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ce1b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:58:37, skipping insertion in model container [2024-11-18 18:58:37,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:58:37" (2/3) ... [2024-11-18 18:58:37,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ce1b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:58:37, skipping insertion in model container [2024-11-18 18:58:37,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:58:37" (3/3) ... [2024-11-18 18:58:37,970 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-34.i [2024-11-18 18:58:37,983 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:58:37,984 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:58:38,050 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:58:38,057 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;@4ab814df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:58:38,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:58:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-18 18:58:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 18:58:38,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:58:38,075 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:58:38,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:58:38,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:58:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1167158208, now seen corresponding path program 1 times [2024-11-18 18:58:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:58:38,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855554045] [2024-11-18 18:58:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:58:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:58:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:58:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-18 18:58:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:58:38,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855554045] [2024-11-18 18:58:38,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855554045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:58:38,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160433692] [2024-11-18 18:58:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:58:38,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:58:38,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:58:38,445 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 18:58:38,447 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 18:58:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:58:38,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 18:58:38,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:58:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-18 18:58:38,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:58:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160433692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:58:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:58:38,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 18:58:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398121923] [2024-11-18 18:58:38,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:58:38,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 18:58:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:58:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 18:58:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 18:58:38,676 INFO L87 Difference]: Start difference. First operand has 71 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 18:58:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:58:38,699 INFO L93 Difference]: Finished difference Result 135 states and 223 transitions. [2024-11-18 18:58:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 18:58:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2024-11-18 18:58:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:58:38,707 INFO L225 Difference]: With dead ends: 135 [2024-11-18 18:58:38,708 INFO L226 Difference]: Without dead ends: 67 [2024-11-18 18:58:38,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 18:58:38,714 INFO L432 NwaCegarLoop]: 101 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, 101 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 18:58:38,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:58:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-18 18:58:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-18 18:58:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-18 18:58:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 101 transitions. [2024-11-18 18:58:38,755 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 101 transitions. Word has length 94 [2024-11-18 18:58:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:58:38,756 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 101 transitions. [2024-11-18 18:58:38,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 18:58:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 101 transitions. [2024-11-18 18:58:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 18:58:38,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:58:38,760 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:58:38,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 18:58:38,960 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 18:58:38,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:58:38,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:58:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1294889278, now seen corresponding path program 1 times [2024-11-18 18:58:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:58:38,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180408974] [2024-11-18 18:58:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:58:38,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:58:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:58:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:58:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:58:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180408974] [2024-11-18 18:58:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180408974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:58:39,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:58:39,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:58:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346030744] [2024-11-18 18:58:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:58:39,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:58:39,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:58:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:58:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:58:39,407 INFO L87 Difference]: Start difference. First operand 67 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:58:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:58:39,557 INFO L93 Difference]: Finished difference Result 225 states and 342 transitions. [2024-11-18 18:58:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:58:39,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2024-11-18 18:58:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:58:39,561 INFO L225 Difference]: With dead ends: 225 [2024-11-18 18:58:39,561 INFO L226 Difference]: Without dead ends: 161 [2024-11-18 18:58:39,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:58:39,563 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 129 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:58:39,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 321 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:58:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-18 18:58:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 131. [2024-11-18 18:58:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 18:58:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 199 transitions. [2024-11-18 18:58:39,598 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 199 transitions. Word has length 94 [2024-11-18 18:58:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:58:39,599 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 199 transitions. [2024-11-18 18:58:39,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:58:39,602 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 199 transitions. [2024-11-18 18:58:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 18:58:39,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:58:39,604 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:58:39,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:58:39,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:58:39,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:58:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1947848368, now seen corresponding path program 1 times [2024-11-18 18:58:39,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:58:39,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189801301] [2024-11-18 18:58:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:58:39,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:58:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:58:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:58:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:58:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189801301] [2024-11-18 18:58:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189801301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:58:40,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:58:40,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:58:40,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036208154] [2024-11-18 18:58:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:58:40,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:58:40,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:58:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:58:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:58:40,015 INFO L87 Difference]: Start difference. First operand 131 states and 199 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:58:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:58:40,194 INFO L93 Difference]: Finished difference Result 382 states and 580 transitions. [2024-11-18 18:58:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:58:40,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2024-11-18 18:58:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:58:40,197 INFO L225 Difference]: With dead ends: 382 [2024-11-18 18:58:40,197 INFO L226 Difference]: Without dead ends: 254 [2024-11-18 18:58:40,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:58:40,203 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 158 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:58:40,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 305 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:58:40,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-18 18:58:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 135. [2024-11-18 18:58:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 106 states have internal predecessors, (151), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 18:58:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 203 transitions. [2024-11-18 18:58:40,238 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 203 transitions. Word has length 95 [2024-11-18 18:58:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:58:40,239 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 203 transitions. [2024-11-18 18:58:40,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:58:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 203 transitions. [2024-11-18 18:58:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:58:40,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:58:40,244 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:58:40,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:58:40,244 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:58:40,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:58:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 343445546, now seen corresponding path program 1 times [2024-11-18 18:58:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:58:40,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382508578] [2024-11-18 18:58:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:58:40,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:58:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:03,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:03,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382508578] [2024-11-18 18:59:03,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382508578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:03,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:03,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 18:59:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950730696] [2024-11-18 18:59:03,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:03,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 18:59:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 18:59:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:59:03,977 INFO L87 Difference]: Start difference. First operand 135 states and 203 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:07,243 INFO L93 Difference]: Finished difference Result 535 states and 786 transitions. [2024-11-18 18:59:07,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 18:59:07,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 18:59:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:07,246 INFO L225 Difference]: With dead ends: 535 [2024-11-18 18:59:07,246 INFO L226 Difference]: Without dead ends: 403 [2024-11-18 18:59:07,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-18 18:59:07,249 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 525 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:07,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 531 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 18:59:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-18 18:59:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 249. [2024-11-18 18:59:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 206 states have (on average 1.4223300970873787) internal successors, (293), 206 states have internal predecessors, (293), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 371 transitions. [2024-11-18 18:59:07,273 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 371 transitions. Word has length 96 [2024-11-18 18:59:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:07,274 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 371 transitions. [2024-11-18 18:59:07,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 371 transitions. [2024-11-18 18:59:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:59:07,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:07,276 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:07,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:59:07,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:07,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2118452908, now seen corresponding path program 1 times [2024-11-18 18:59:07,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014912098] [2024-11-18 18:59:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014912098] [2024-11-18 18:59:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014912098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:09,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:09,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:59:09,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223953210] [2024-11-18 18:59:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:09,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:59:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:59:09,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:59:09,334 INFO L87 Difference]: Start difference. First operand 249 states and 371 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:10,143 INFO L93 Difference]: Finished difference Result 608 states and 909 transitions. [2024-11-18 18:59:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:59:10,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 18:59:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:10,147 INFO L225 Difference]: With dead ends: 608 [2024-11-18 18:59:10,147 INFO L226 Difference]: Without dead ends: 460 [2024-11-18 18:59:10,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:59:10,149 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 398 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:10,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 343 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:59:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-18 18:59:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 294. [2024-11-18 18:59:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.4183266932270917) internal successors, (356), 251 states have internal predecessors, (356), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2024-11-18 18:59:10,185 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 96 [2024-11-18 18:59:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:10,185 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2024-11-18 18:59:10,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2024-11-18 18:59:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:59:10,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:10,188 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:10,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:59:10,188 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:10,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1023503916, now seen corresponding path program 1 times [2024-11-18 18:59:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467283481] [2024-11-18 18:59:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:14,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467283481] [2024-11-18 18:59:14,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467283481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:14,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:14,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 18:59:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835908086] [2024-11-18 18:59:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:14,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 18:59:14,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 18:59:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:59:14,603 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:15,857 INFO L93 Difference]: Finished difference Result 602 states and 884 transitions. [2024-11-18 18:59:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 18:59:15,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 18:59:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:15,860 INFO L225 Difference]: With dead ends: 602 [2024-11-18 18:59:15,860 INFO L226 Difference]: Without dead ends: 456 [2024-11-18 18:59:15,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-18 18:59:15,862 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 366 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:15,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 448 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:59:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-18 18:59:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 354. [2024-11-18 18:59:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 311 states have (on average 1.459807073954984) internal successors, (454), 311 states have internal predecessors, (454), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 532 transitions. [2024-11-18 18:59:15,893 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 532 transitions. Word has length 96 [2024-11-18 18:59:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:15,893 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 532 transitions. [2024-11-18 18:59:15,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 532 transitions. [2024-11-18 18:59:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:59:15,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:15,895 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:15,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:59:15,896 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:15,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -926687525, now seen corresponding path program 1 times [2024-11-18 18:59:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380195671] [2024-11-18 18:59:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380195671] [2024-11-18 18:59:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380195671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:17,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:59:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914550283] [2024-11-18 18:59:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:17,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:59:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:59:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:59:17,205 INFO L87 Difference]: Start difference. First operand 354 states and 532 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:17,534 INFO L93 Difference]: Finished difference Result 656 states and 980 transitions. [2024-11-18 18:59:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:59:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 18:59:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:17,538 INFO L225 Difference]: With dead ends: 656 [2024-11-18 18:59:17,538 INFO L226 Difference]: Without dead ends: 472 [2024-11-18 18:59:17,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:59:17,540 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:17,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 345 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:59:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-18 18:59:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 360. [2024-11-18 18:59:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 317 states have (on average 1.444794952681388) internal successors, (458), 317 states have internal predecessors, (458), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 536 transitions. [2024-11-18 18:59:17,566 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 536 transitions. Word has length 96 [2024-11-18 18:59:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:17,566 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 536 transitions. [2024-11-18 18:59:17,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 536 transitions. [2024-11-18 18:59:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:59:17,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:17,568 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:17,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:59:17,568 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:17,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -667671704, now seen corresponding path program 1 times [2024-11-18 18:59:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:17,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623641076] [2024-11-18 18:59:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:17,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:17,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623641076] [2024-11-18 18:59:17,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623641076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:17,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:17,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:59:17,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84419185] [2024-11-18 18:59:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:17,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:59:17,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:59:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:59:17,795 INFO L87 Difference]: Start difference. First operand 360 states and 536 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:17,980 INFO L93 Difference]: Finished difference Result 576 states and 859 transitions. [2024-11-18 18:59:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:59:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-18 18:59:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:17,982 INFO L225 Difference]: With dead ends: 576 [2024-11-18 18:59:17,982 INFO L226 Difference]: Without dead ends: 350 [2024-11-18 18:59:17,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:59:17,984 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 81 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:17,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 230 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:59:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-18 18:59:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 322. [2024-11-18 18:59:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 279 states have (on average 1.4050179211469533) internal successors, (392), 279 states have internal predecessors, (392), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 470 transitions. [2024-11-18 18:59:18,018 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 470 transitions. Word has length 96 [2024-11-18 18:59:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:18,019 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 470 transitions. [2024-11-18 18:59:18,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 470 transitions. [2024-11-18 18:59:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 18:59:18,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:18,020 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:18,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 18:59:18,021 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:18,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:18,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1326331525, now seen corresponding path program 1 times [2024-11-18 18:59:18,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:18,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81465421] [2024-11-18 18:59:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:18,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:20,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:20,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81465421] [2024-11-18 18:59:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81465421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:20,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:20,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:59:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928034318] [2024-11-18 18:59:20,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:20,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:59:20,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:59:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:59:20,104 INFO L87 Difference]: Start difference. First operand 322 states and 470 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:21,128 INFO L93 Difference]: Finished difference Result 647 states and 936 transitions. [2024-11-18 18:59:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:59:21,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2024-11-18 18:59:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:21,131 INFO L225 Difference]: With dead ends: 647 [2024-11-18 18:59:21,132 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 18:59:21,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:59:21,133 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 254 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:21,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 576 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:59:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 18:59:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 358. [2024-11-18 18:59:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 313 states have (on average 1.3738019169329074) internal successors, (430), 313 states have internal predecessors, (430), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 508 transitions. [2024-11-18 18:59:21,161 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 508 transitions. Word has length 97 [2024-11-18 18:59:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:21,161 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 508 transitions. [2024-11-18 18:59:21,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 508 transitions. [2024-11-18 18:59:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 18:59:21,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:21,163 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:21,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 18:59:21,165 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:21,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash 491239673, now seen corresponding path program 1 times [2024-11-18 18:59:21,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:21,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062460044] [2024-11-18 18:59:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:21,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062460044] [2024-11-18 18:59:23,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062460044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:23,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:23,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 18:59:23,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026447753] [2024-11-18 18:59:23,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:23,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 18:59:23,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 18:59:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:59:23,695 INFO L87 Difference]: Start difference. First operand 358 states and 508 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:26,075 INFO L93 Difference]: Finished difference Result 841 states and 1200 transitions. [2024-11-18 18:59:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 18:59:26,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2024-11-18 18:59:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:26,078 INFO L225 Difference]: With dead ends: 841 [2024-11-18 18:59:26,079 INFO L226 Difference]: Without dead ends: 625 [2024-11-18 18:59:26,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2024-11-18 18:59:26,081 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 287 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:26,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 461 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:59:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-18 18:59:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 441. [2024-11-18 18:59:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.3914141414141414) internal successors, (551), 396 states have internal predecessors, (551), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 629 transitions. [2024-11-18 18:59:26,117 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 629 transitions. Word has length 97 [2024-11-18 18:59:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:26,118 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 629 transitions. [2024-11-18 18:59:26,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 629 transitions. [2024-11-18 18:59:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 18:59:26,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:26,119 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:26,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:59:26,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:26,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1171298043, now seen corresponding path program 1 times [2024-11-18 18:59:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486096837] [2024-11-18 18:59:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486096837] [2024-11-18 18:59:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486096837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 18:59:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919962230] [2024-11-18 18:59:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:31,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 18:59:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 18:59:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:59:31,868 INFO L87 Difference]: Start difference. First operand 441 states and 629 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 18:59:33,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:33,770 INFO L93 Difference]: Finished difference Result 832 states and 1170 transitions. [2024-11-18 18:59:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 18:59:33,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2024-11-18 18:59:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:33,774 INFO L225 Difference]: With dead ends: 832 [2024-11-18 18:59:33,774 INFO L226 Difference]: Without dead ends: 543 [2024-11-18 18:59:33,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-18 18:59:33,776 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 272 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:33,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 757 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 18:59:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-18 18:59:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 441. [2024-11-18 18:59:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.3888888888888888) internal successors, (550), 396 states have internal predecessors, (550), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2024-11-18 18:59:33,818 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 97 [2024-11-18 18:59:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:33,819 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2024-11-18 18:59:33,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 18:59:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2024-11-18 18:59:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 18:59:33,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:33,821 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:33,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:59:33,821 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:33,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1743707403, now seen corresponding path program 1 times [2024-11-18 18:59:33,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476784052] [2024-11-18 18:59:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476784052] [2024-11-18 18:59:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476784052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 18:59:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926174206] [2024-11-18 18:59:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:41,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 18:59:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 18:59:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-18 18:59:41,281 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:43,071 INFO L93 Difference]: Finished difference Result 785 states and 1112 transitions. [2024-11-18 18:59:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 18:59:43,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 18:59:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:43,075 INFO L225 Difference]: With dead ends: 785 [2024-11-18 18:59:43,075 INFO L226 Difference]: Without dead ends: 557 [2024-11-18 18:59:43,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2024-11-18 18:59:43,077 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 402 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:43,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 471 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:59:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-18 18:59:43,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 421. [2024-11-18 18:59:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 376 states have (on average 1.3936170212765957) internal successors, (524), 376 states have internal predecessors, (524), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 602 transitions. [2024-11-18 18:59:43,124 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 602 transitions. Word has length 98 [2024-11-18 18:59:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:43,126 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 602 transitions. [2024-11-18 18:59:43,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 602 transitions. [2024-11-18 18:59:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 18:59:43,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:43,128 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:43,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 18:59:43,128 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:43,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1063649033, now seen corresponding path program 1 times [2024-11-18 18:59:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:43,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464290163] [2024-11-18 18:59:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:43,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:44,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464290163] [2024-11-18 18:59:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464290163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:44,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:44,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:59:44,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211889975] [2024-11-18 18:59:44,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:44,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:59:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:44,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:59:44,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:59:44,988 INFO L87 Difference]: Start difference. First operand 421 states and 602 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:59:45,792 INFO L93 Difference]: Finished difference Result 717 states and 1016 transitions. [2024-11-18 18:59:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:59:45,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-18 18:59:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:59:45,796 INFO L225 Difference]: With dead ends: 717 [2024-11-18 18:59:45,796 INFO L226 Difference]: Without dead ends: 485 [2024-11-18 18:59:45,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:59:45,799 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 210 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:59:45,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 378 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:59:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-18 18:59:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 411. [2024-11-18 18:59:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 366 states have (on average 1.3934426229508197) internal successors, (510), 366 states have internal predecessors, (510), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 18:59:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 588 transitions. [2024-11-18 18:59:45,830 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 588 transitions. Word has length 98 [2024-11-18 18:59:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:59:45,833 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 588 transitions. [2024-11-18 18:59:45,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 18:59:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 588 transitions. [2024-11-18 18:59:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 18:59:45,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:59:45,835 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:59:45,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:59:45,836 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:59:45,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:59:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash -448582361, now seen corresponding path program 1 times [2024-11-18 18:59:45,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:59:45,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897427174] [2024-11-18 18:59:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:59:45,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:59:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:59:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 18:59:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:59:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897427174] [2024-11-18 18:59:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897427174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:59:48,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:59:48,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 18:59:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820282273] [2024-11-18 18:59:48,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:59:48,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 18:59:48,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:59:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 18:59:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:59:48,800 INFO L87 Difference]: Start difference. First operand 411 states and 588 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13)