./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.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_ps-cn-25_file-81.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 20b89f8a60d2f6d2584628c0d5624c8090542a805d1f710cb23a05b88ce8a600 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:46:42,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:46:42,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:46:42,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:46:42,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:46:42,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:46:42,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:46:42,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:46:42,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:46:42,771 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:46:42,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:46:42,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:46:42,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:46:42,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:46:42,775 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:46:42,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:46:42,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:46:42,776 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:46:42,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:46:42,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:46:42,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:46:42,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:46:42,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:46:42,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:46:42,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:46:42,782 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:46:42,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:46:42,783 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:46:42,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:46:42,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:46:42,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:46:42,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:46:42,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:46:42,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:46:42,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:46:42,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:46:42,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:46:42,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:46:42,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:46:42,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:46:42,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:46:42,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:46:42,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20b89f8a60d2f6d2584628c0d5624c8090542a805d1f710cb23a05b88ce8a600 [2024-11-18 19:46:43,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:46:43,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:46:43,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:46:43,101 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:46:43,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:46:43,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2024-11-18 19:46:44,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:46:44,878 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:46:44,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2024-11-18 19:46:44,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818b6e195/4bc6304d0bbd4d50b3489d67eceba13f/FLAGf1968f2c4 [2024-11-18 19:46:44,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818b6e195/4bc6304d0bbd4d50b3489d67eceba13f [2024-11-18 19:46:44,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:46:44,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:46:44,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:46:44,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:46:44,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:46:44,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:44" (1/1) ... [2024-11-18 19:46:44,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ed8edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:44, skipping insertion in model container [2024-11-18 19:46:44,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:44" (1/1) ... [2024-11-18 19:46:44,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:46:45,102 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_ps-cn-25_file-81.i[915,928] [2024-11-18 19:46:45,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:46:45,183 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:46:45,193 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_ps-cn-25_file-81.i[915,928] [2024-11-18 19:46:45,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:46:45,252 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:46:45,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45 WrapperNode [2024-11-18 19:46:45,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:46:45,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:46:45,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:46:45,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:46:45,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,333 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2024-11-18 19:46:45,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:46:45,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:46:45,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:46:45,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:46:45,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,385 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 19:46:45,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:46:45,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:46:45,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:46:45,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:46:45,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2024-11-18 19:46:45,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:46:45,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:46:45,465 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 19:46:45,476 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 19:46:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:46:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:46:45,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:46:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:46:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:46:45,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:46:45,622 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:46:45,626 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:46:46,170 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 19:46:46,170 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:46:46,192 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:46:46,193 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:46:46,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:46 BoogieIcfgContainer [2024-11-18 19:46:46,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:46:46,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:46:46,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:46:46,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:46:46,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:46:44" (1/3) ... [2024-11-18 19:46:46,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220470e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:46, skipping insertion in model container [2024-11-18 19:46:46,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (2/3) ... [2024-11-18 19:46:46,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220470e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:46, skipping insertion in model container [2024-11-18 19:46:46,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:46" (3/3) ... [2024-11-18 19:46:46,202 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2024-11-18 19:46:46,220 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:46:46,220 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:46:46,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:46:46,299 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;@4bc39a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:46:46,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:46:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 66 states have internal predecessors, (90), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-18 19:46:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 19:46:46,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:46:46,328 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:46,330 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:46:46,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:46:46,336 INFO L85 PathProgramCache]: Analyzing trace with hash 598275583, now seen corresponding path program 1 times [2024-11-18 19:46:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:46:46,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608878615] [2024-11-18 19:46:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:46:46,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:46:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:46:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-18 19:46:46,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:46:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608878615] [2024-11-18 19:46:46,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608878615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:46:46,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014877156] [2024-11-18 19:46:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:46:46,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:46:46,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:46:46,740 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 19:46:46,742 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 19:46:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:46:46,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:46:46,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:46:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-18 19:46:46,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:46:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014877156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:46:46,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:46:46,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:46:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199449139] [2024-11-18 19:46:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:46:46,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:46:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:46:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:46:47,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:46:47,010 INFO L87 Difference]: Start difference. First operand has 109 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 66 states have internal predecessors, (90), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:46:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:46:47,045 INFO L93 Difference]: Finished difference Result 211 states and 379 transitions. [2024-11-18 19:46:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:46:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 251 [2024-11-18 19:46:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:46:47,055 INFO L225 Difference]: With dead ends: 211 [2024-11-18 19:46:47,055 INFO L226 Difference]: Without dead ends: 105 [2024-11-18 19:46:47,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 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 19:46:47,064 INFO L432 NwaCegarLoop]: 165 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, 165 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 19:46:47,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:46:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-18 19:46:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-18 19:46:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-18 19:46:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 165 transitions. [2024-11-18 19:46:47,123 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 165 transitions. Word has length 251 [2024-11-18 19:46:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:46:47,124 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 165 transitions. [2024-11-18 19:46:47,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:46:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 165 transitions. [2024-11-18 19:46:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 19:46:47,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:46:47,129 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:47,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:46:47,330 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 19:46:47,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:46:47,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:46:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1120972483, now seen corresponding path program 1 times [2024-11-18 19:46:47,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:46:47,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127119689] [2024-11-18 19:46:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:46:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:46:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:00,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:00,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127119689] [2024-11-18 19:47:00,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127119689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:00,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:00,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 19:47:00,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514515067] [2024-11-18 19:47:00,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:00,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 19:47:00,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 19:47:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-18 19:47:00,568 INFO L87 Difference]: Start difference. First operand 105 states and 165 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:47:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:03,454 INFO L93 Difference]: Finished difference Result 417 states and 642 transitions. [2024-11-18 19:47:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 19:47:03,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 251 [2024-11-18 19:47:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:03,459 INFO L225 Difference]: With dead ends: 417 [2024-11-18 19:47:03,459 INFO L226 Difference]: Without dead ends: 315 [2024-11-18 19:47:03,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-11-18 19:47:03,465 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 929 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:03,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 862 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 19:47:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-18 19:47:03,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 196. [2024-11-18 19:47:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 111 states have internal predecessors, (147), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-18 19:47:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 311 transitions. [2024-11-18 19:47:03,544 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 311 transitions. Word has length 251 [2024-11-18 19:47:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:03,546 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 311 transitions. [2024-11-18 19:47:03,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:47:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 311 transitions. [2024-11-18 19:47:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 19:47:03,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:03,555 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:03,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:47:03,555 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:03,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:03,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1513999493, now seen corresponding path program 1 times [2024-11-18 19:47:03,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:03,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999904565] [2024-11-18 19:47:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999904565] [2024-11-18 19:47:03,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999904565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:03,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:03,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:47:03,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432474688] [2024-11-18 19:47:03,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:03,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:47:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:47:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:47:03,904 INFO L87 Difference]: Start difference. First operand 196 states and 311 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:04,009 INFO L93 Difference]: Finished difference Result 333 states and 522 transitions. [2024-11-18 19:47:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:47:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2024-11-18 19:47:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:04,018 INFO L225 Difference]: With dead ends: 333 [2024-11-18 19:47:04,018 INFO L226 Difference]: Without dead ends: 231 [2024-11-18 19:47:04,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:47:04,021 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 42 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:04,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 485 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:47:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-18 19:47:04,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-11-18 19:47:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 138 states have (on average 1.326086956521739) internal successors, (183), 139 states have internal predecessors, (183), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 355 transitions. [2024-11-18 19:47:04,077 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 355 transitions. Word has length 251 [2024-11-18 19:47:04,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:04,079 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 355 transitions. [2024-11-18 19:47:04,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 355 transitions. [2024-11-18 19:47:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 19:47:04,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:04,085 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:04,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:47:04,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:04,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash -419907905, now seen corresponding path program 1 times [2024-11-18 19:47:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891071026] [2024-11-18 19:47:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:13,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891071026] [2024-11-18 19:47:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891071026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:13,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 19:47:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264274306] [2024-11-18 19:47:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:13,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 19:47:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 19:47:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:47:13,771 INFO L87 Difference]: Start difference. First operand 228 states and 355 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:14,506 INFO L93 Difference]: Finished difference Result 402 states and 615 transitions. [2024-11-18 19:47:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:47:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2024-11-18 19:47:14,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:14,519 INFO L225 Difference]: With dead ends: 402 [2024-11-18 19:47:14,520 INFO L226 Difference]: Without dead ends: 268 [2024-11-18 19:47:14,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 19:47:14,521 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 86 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:14,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 778 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:47:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-18 19:47:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 147. [2024-11-18 19:47:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 100 states have internal predecessors, (134), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 19:47:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 224 transitions. [2024-11-18 19:47:14,545 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 224 transitions. Word has length 251 [2024-11-18 19:47:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:14,546 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 224 transitions. [2024-11-18 19:47:14,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 224 transitions. [2024-11-18 19:47:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 19:47:14,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:14,549 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:14,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:47:14,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:14,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash -862807045, now seen corresponding path program 1 times [2024-11-18 19:47:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900207521] [2024-11-18 19:47:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:15,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900207521] [2024-11-18 19:47:15,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900207521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:15,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:15,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 19:47:15,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969986180] [2024-11-18 19:47:15,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:15,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:47:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:15,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:47:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:47:15,229 INFO L87 Difference]: Start difference. First operand 147 states and 224 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:15,652 INFO L93 Difference]: Finished difference Result 424 states and 651 transitions. [2024-11-18 19:47:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:47:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2024-11-18 19:47:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:15,655 INFO L225 Difference]: With dead ends: 424 [2024-11-18 19:47:15,655 INFO L226 Difference]: Without dead ends: 280 [2024-11-18 19:47:15,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:47:15,657 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 171 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:15,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 600 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:47:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-18 19:47:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 232. [2024-11-18 19:47:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.323943661971831) internal successors, (188), 143 states have internal predecessors, (188), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2024-11-18 19:47:15,685 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 251 [2024-11-18 19:47:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:15,686 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2024-11-18 19:47:15,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2024-11-18 19:47:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:15,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:15,689 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:15,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:47:15,690 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:15,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash 717630209, now seen corresponding path program 1 times [2024-11-18 19:47:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439986663] [2024-11-18 19:47:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:22,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:22,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439986663] [2024-11-18 19:47:22,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439986663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:22,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:22,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 19:47:22,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280042833] [2024-11-18 19:47:22,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:22,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 19:47:22,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 19:47:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:47:22,465 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:24,362 INFO L93 Difference]: Finished difference Result 576 states and 859 transitions. [2024-11-18 19:47:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 19:47:24,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-18 19:47:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:24,367 INFO L225 Difference]: With dead ends: 576 [2024-11-18 19:47:24,367 INFO L226 Difference]: Without dead ends: 432 [2024-11-18 19:47:24,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-18 19:47:24,368 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 577 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:24,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 825 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 19:47:24,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-18 19:47:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 237. [2024-11-18 19:47:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 147 states have (on average 1.3333333333333333) internal successors, (196), 148 states have internal predecessors, (196), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 368 transitions. [2024-11-18 19:47:24,410 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 368 transitions. Word has length 252 [2024-11-18 19:47:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:24,413 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 368 transitions. [2024-11-18 19:47:24,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:24,414 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 368 transitions. [2024-11-18 19:47:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:24,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:24,418 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:24,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:47:24,419 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:24,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash 324603199, now seen corresponding path program 1 times [2024-11-18 19:47:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:24,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060258525] [2024-11-18 19:47:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:24,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060258525] [2024-11-18 19:47:30,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060258525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:30,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:30,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 19:47:30,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130361977] [2024-11-18 19:47:30,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:30,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 19:47:30,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 19:47:30,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 19:47:30,238 INFO L87 Difference]: Start difference. First operand 237 states and 368 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:47:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:31,914 INFO L93 Difference]: Finished difference Result 544 states and 815 transitions. [2024-11-18 19:47:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 19:47:31,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 252 [2024-11-18 19:47:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:31,919 INFO L225 Difference]: With dead ends: 544 [2024-11-18 19:47:31,919 INFO L226 Difference]: Without dead ends: 400 [2024-11-18 19:47:31,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-18 19:47:31,921 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 404 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:31,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1042 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 19:47:31,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-18 19:47:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 245. [2024-11-18 19:47:31,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.335483870967742) internal successors, (207), 156 states have internal predecessors, (207), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 379 transitions. [2024-11-18 19:47:31,944 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 379 transitions. Word has length 252 [2024-11-18 19:47:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:31,945 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 379 transitions. [2024-11-18 19:47:31,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:47:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2024-11-18 19:47:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:31,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:31,947 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:31,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:47:31,948 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:31,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1418694787, now seen corresponding path program 1 times [2024-11-18 19:47:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:31,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503192111] [2024-11-18 19:47:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:31,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:40,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503192111] [2024-11-18 19:47:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503192111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:40,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:40,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 19:47:40,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264232803] [2024-11-18 19:47:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:40,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 19:47:40,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 19:47:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 19:47:40,619 INFO L87 Difference]: Start difference. First operand 245 states and 379 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:42,599 INFO L93 Difference]: Finished difference Result 539 states and 808 transitions. [2024-11-18 19:47:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 19:47:42,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-18 19:47:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:42,605 INFO L225 Difference]: With dead ends: 539 [2024-11-18 19:47:42,605 INFO L226 Difference]: Without dead ends: 395 [2024-11-18 19:47:42,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-18 19:47:42,606 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 374 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:42,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 911 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 19:47:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-18 19:47:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 246. [2024-11-18 19:47:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 156 states have (on average 1.3397435897435896) internal successors, (209), 157 states have internal predecessors, (209), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 381 transitions. [2024-11-18 19:47:42,628 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 381 transitions. Word has length 252 [2024-11-18 19:47:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:42,630 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 381 transitions. [2024-11-18 19:47:42,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 381 transitions. [2024-11-18 19:47:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:42,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:42,631 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:42,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:47:42,631 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:42,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1025667777, now seen corresponding path program 1 times [2024-11-18 19:47:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:42,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556099518] [2024-11-18 19:47:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:42,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556099518] [2024-11-18 19:47:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556099518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:47,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 19:47:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448735367] [2024-11-18 19:47:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:47,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 19:47:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 19:47:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 19:47:47,459 INFO L87 Difference]: Start difference. First operand 246 states and 381 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:47:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:49,314 INFO L93 Difference]: Finished difference Result 516 states and 776 transitions. [2024-11-18 19:47:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 19:47:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 252 [2024-11-18 19:47:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:49,317 INFO L225 Difference]: With dead ends: 516 [2024-11-18 19:47:49,317 INFO L226 Difference]: Without dead ends: 372 [2024-11-18 19:47:49,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-18 19:47:49,319 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 350 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:49,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1035 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 19:47:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-18 19:47:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 245. [2024-11-18 19:47:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.335483870967742) internal successors, (207), 156 states have internal predecessors, (207), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 379 transitions. [2024-11-18 19:47:49,338 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 379 transitions. Word has length 252 [2024-11-18 19:47:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:49,339 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 379 transitions. [2024-11-18 19:47:49,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 19:47:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2024-11-18 19:47:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:49,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:49,340 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:49,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:47:49,341 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:49,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -293487041, now seen corresponding path program 1 times [2024-11-18 19:47:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695942549] [2024-11-18 19:47:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:56,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695942549] [2024-11-18 19:47:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695942549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 19:47:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122397332] [2024-11-18 19:47:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:56,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 19:47:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 19:47:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 19:47:56,714 INFO L87 Difference]: Start difference. First operand 245 states and 379 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:57,839 INFO L93 Difference]: Finished difference Result 538 states and 808 transitions. [2024-11-18 19:47:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 19:47:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-18 19:47:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:57,843 INFO L225 Difference]: With dead ends: 538 [2024-11-18 19:47:57,843 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 19:47:57,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-18 19:47:57,844 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 263 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:57,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 694 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:47:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 19:47:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 252. [2024-11-18 19:47:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 162 states have (on average 1.345679012345679) internal successors, (218), 163 states have internal predecessors, (218), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 390 transitions. [2024-11-18 19:47:57,873 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 390 transitions. Word has length 252 [2024-11-18 19:47:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:57,874 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 390 transitions. [2024-11-18 19:47:57,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 390 transitions. [2024-11-18 19:47:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:57,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:57,876 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:57,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 19:47:57,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:57,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -686514051, now seen corresponding path program 1 times [2024-11-18 19:47:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:57,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328330247] [2024-11-18 19:47:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:47:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-18 19:47:58,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:47:58,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328330247] [2024-11-18 19:47:58,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328330247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:47:58,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:47:58,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 19:47:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591176789] [2024-11-18 19:47:58,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:47:58,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:47:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:47:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:47:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:47:58,787 INFO L87 Difference]: Start difference. First operand 252 states and 390 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:47:59,413 INFO L93 Difference]: Finished difference Result 489 states and 742 transitions. [2024-11-18 19:47:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:47:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-18 19:47:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:47:59,416 INFO L225 Difference]: With dead ends: 489 [2024-11-18 19:47:59,416 INFO L226 Difference]: Without dead ends: 340 [2024-11-18 19:47:59,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-18 19:47:59,417 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 244 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:47:59,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 635 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:47:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-18 19:47:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 253. [2024-11-18 19:47:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 163 states have (on average 1.3496932515337423) internal successors, (220), 164 states have internal predecessors, (220), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:47:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 392 transitions. [2024-11-18 19:47:59,439 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 392 transitions. Word has length 252 [2024-11-18 19:47:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:47:59,439 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 392 transitions. [2024-11-18 19:47:59,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 19:47:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 392 transitions. [2024-11-18 19:47:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 19:47:59,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:47:59,440 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:59,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:47:59,441 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:47:59,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:47:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash 407577537, now seen corresponding path program 1 times [2024-11-18 19:47:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:47:59,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022318172] [2024-11-18 19:47:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:47:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:47:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat