./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem12_label20.c -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 702e32bde69e0b1ece4e7732f8bcc90ed2c9bf4432a02312b63f0298ad23fbb9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:26:10,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:26:10,312 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:26:10,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:26:10,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:26:10,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:26:10,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:26:10,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:26:10,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:26:10,351 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:26:10,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:26:10,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:26:10,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:26:10,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:26:10,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:26:10,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:26:10,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:26:10,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:26:10,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:26:10,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:26:10,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:26:10,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:26:10,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:26:10,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:26:10,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:26:10,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:26:10,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:26:10,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:26:10,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:26:10,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:26:10,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:26:10,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:26:10,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:26:10,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:26:10,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:26:10,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:26:10,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:26:10,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:26:10,365 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:26:10,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:26:10,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:26:10,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:26:10,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702e32bde69e0b1ece4e7732f8bcc90ed2c9bf4432a02312b63f0298ad23fbb9 [2024-11-09 19:26:10,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:26:10,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:26:10,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:26:10,674 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:26:10,675 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:26:10,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2024-11-09 19:26:12,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:26:12,600 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:26:12,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2024-11-09 19:26:12,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e4b0a390/d7fd450eca02428ab46d88f9f065bc01/FLAG08d34a34c [2024-11-09 19:26:12,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e4b0a390/d7fd450eca02428ab46d88f9f065bc01 [2024-11-09 19:26:12,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:26:12,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:26:12,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:26:12,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:26:12,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:26:12,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:26:12" (1/1) ... [2024-11-09 19:26:12,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651f8a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:12, skipping insertion in model container [2024-11-09 19:26:12,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:26:12" (1/1) ... [2024-11-09 19:26:12,913 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:26:13,134 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/eca-rers2012/Problem12_label20.c[1898,1911] [2024-11-09 19:26:13,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:26:13,884 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:26:13,898 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/eca-rers2012/Problem12_label20.c[1898,1911] [2024-11-09 19:26:14,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:26:14,281 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:26:14,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14 WrapperNode [2024-11-09 19:26:14,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:26:14,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:26:14,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:26:14,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:26:14,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:14,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:14,670 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:26:14,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:26:14,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:26:14,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:26:14,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:26:14,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:14,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:14,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,026 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]. [2024-11-09 19:26:15,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,244 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:26:15,418 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:26:15,418 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:26:15,419 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:26:15,420 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (1/1) ... [2024-11-09 19:26:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:26:15,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:26:15,460 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) [2024-11-09 19:26:15,463 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 [2024-11-09 19:26:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:26:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:26:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:26:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:26:15,592 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:26:15,594 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:26:20,879 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:26:20,879 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:26:20,881 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:26:21,183 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:26:21,183 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:26:21,216 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:26:21,216 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:26:21,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:26:21 BoogieIcfgContainer [2024-11-09 19:26:21,217 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:26:21,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:26:21,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:26:21,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:26:21,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:26:12" (1/3) ... [2024-11-09 19:26:21,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cd9acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:26:21, skipping insertion in model container [2024-11-09 19:26:21,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:14" (2/3) ... [2024-11-09 19:26:21,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cd9acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:26:21, skipping insertion in model container [2024-11-09 19:26:21,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:26:21" (3/3) ... [2024-11-09 19:26:21,229 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2024-11-09 19:26:21,244 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:26:21,244 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:26:21,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:26:21,354 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;@54fffe46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:26:21,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:26:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 19:26:21,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:21,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:21,373 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:21,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1936150063, now seen corresponding path program 1 times [2024-11-09 19:26:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:21,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348791456] [2024-11-09 19:26:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:26:21,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:21,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348791456] [2024-11-09 19:26:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348791456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:21,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:21,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:26:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174740083] [2024-11-09 19:26:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:21,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:21,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:21,692 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:26,812 INFO L93 Difference]: Finished difference Result 2394 states and 6675 transitions. [2024-11-09 19:26:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 19:26:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:26,846 INFO L225 Difference]: With dead ends: 2394 [2024-11-09 19:26:26,846 INFO L226 Difference]: Without dead ends: 1509 [2024-11-09 19:26:26,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:26,857 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 1565 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 4568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:26,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 160 Invalid, 4568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 19:26:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-09 19:26:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-09 19:26:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.746021220159151) internal successors, (4141), 1508 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4141 transitions. [2024-11-09 19:26:27,000 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4141 transitions. Word has length 14 [2024-11-09 19:26:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:27,001 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 4141 transitions. [2024-11-09 19:26:27,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4141 transitions. [2024-11-09 19:26:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 19:26:27,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:27,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:27,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:26:27,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:27,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash 215241171, now seen corresponding path program 1 times [2024-11-09 19:26:27,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286251410] [2024-11-09 19:26:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:26:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286251410] [2024-11-09 19:26:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286251410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:27,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:27,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632087535] [2024-11-09 19:26:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:27,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:26:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:26:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:26:27,409 INFO L87 Difference]: Start difference. First operand 1509 states and 4141 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:34,823 INFO L93 Difference]: Finished difference Result 5272 states and 14437 transitions. [2024-11-09 19:26:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:26:34,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-09 19:26:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:34,843 INFO L225 Difference]: With dead ends: 5272 [2024-11-09 19:26:34,844 INFO L226 Difference]: Without dead ends: 3765 [2024-11-09 19:26:34,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:26:34,850 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 4220 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7875 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 9023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 7875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:34,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4220 Valid, 716 Invalid, 9023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 7875 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 19:26:34,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-09 19:26:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2024-11-09 19:26:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.4744952178533475) internal successors, (9314), 3764 states have internal predecessors, (9314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 9314 transitions. [2024-11-09 19:26:34,938 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 9314 transitions. Word has length 84 [2024-11-09 19:26:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:34,940 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 9314 transitions. [2024-11-09 19:26:34,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 9314 transitions. [2024-11-09 19:26:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 19:26:34,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:34,942 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:34,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:26:34,943 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:34,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:34,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1651997811, now seen corresponding path program 1 times [2024-11-09 19:26:34,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:34,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239292317] [2024-11-09 19:26:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 19:26:35,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:35,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239292317] [2024-11-09 19:26:35,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239292317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:35,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:35,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:26:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128823420] [2024-11-09 19:26:35,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:35,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:35,055 INFO L87 Difference]: Start difference. First operand 3765 states and 9314 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:39,064 INFO L93 Difference]: Finished difference Result 10536 states and 26498 transitions. [2024-11-09 19:26:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-09 19:26:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:39,099 INFO L225 Difference]: With dead ends: 10536 [2024-11-09 19:26:39,101 INFO L226 Difference]: Without dead ends: 6773 [2024-11-09 19:26:39,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:39,112 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 1406 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3621 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 3621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:39,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 478 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 3621 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:26:39,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-09 19:26:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2024-11-09 19:26:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.3275251033668045) internal successors, (15762), 6772 states have internal predecessors, (15762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 15762 transitions. [2024-11-09 19:26:39,304 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 15762 transitions. Word has length 86 [2024-11-09 19:26:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:39,307 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 15762 transitions. [2024-11-09 19:26:39,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 15762 transitions. [2024-11-09 19:26:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 19:26:39,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:39,319 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:39,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:26:39,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:39,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1662439833, now seen corresponding path program 1 times [2024-11-09 19:26:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749727809] [2024-11-09 19:26:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:39,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:26:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749727809] [2024-11-09 19:26:39,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749727809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:39,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:39,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:39,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188669227] [2024-11-09 19:26:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:39,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:26:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:26:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:26:39,800 INFO L87 Difference]: Start difference. First operand 6773 states and 15762 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:44,012 INFO L93 Difference]: Finished difference Result 15838 states and 36348 transitions. [2024-11-09 19:26:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:26:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-09 19:26:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:44,047 INFO L225 Difference]: With dead ends: 15838 [2024-11-09 19:26:44,047 INFO L226 Difference]: Without dead ends: 9029 [2024-11-09 19:26:44,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:26:44,057 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 1368 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5844 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 6039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 5844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:44,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 718 Invalid, 6039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 5844 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:26:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2024-11-09 19:26:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8277. [2024-11-09 19:26:44,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 2.25181246979217) internal successors, (18636), 8276 states have internal predecessors, (18636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 18636 transitions. [2024-11-09 19:26:44,265 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 18636 transitions. Word has length 164 [2024-11-09 19:26:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:44,266 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 18636 transitions. [2024-11-09 19:26:44,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 18636 transitions. [2024-11-09 19:26:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 19:26:44,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:44,274 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:44,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:26:44,275 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:44,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1681475929, now seen corresponding path program 1 times [2024-11-09 19:26:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:44,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422470304] [2024-11-09 19:26:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:26:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422470304] [2024-11-09 19:26:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422470304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:44,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:44,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635574184] [2024-11-09 19:26:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:44,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:44,490 INFO L87 Difference]: Start difference. First operand 8277 states and 18636 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:48,122 INFO L93 Difference]: Finished difference Result 19560 states and 45024 transitions. [2024-11-09 19:26:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2024-11-09 19:26:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:48,162 INFO L225 Difference]: With dead ends: 19560 [2024-11-09 19:26:48,163 INFO L226 Difference]: Without dead ends: 11285 [2024-11-09 19:26:48,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:48,175 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 1441 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3621 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 4229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 3621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:48,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 578 Invalid, 4229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 3621 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:26:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2024-11-09 19:26:48,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 8277. [2024-11-09 19:26:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 2.25181246979217) internal successors, (18636), 8276 states have internal predecessors, (18636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 18636 transitions. [2024-11-09 19:26:48,341 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 18636 transitions. Word has length 228 [2024-11-09 19:26:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:48,342 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 18636 transitions. [2024-11-09 19:26:48,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 18636 transitions. [2024-11-09 19:26:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-09 19:26:48,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:48,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:48,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:26:48,345 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:48,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2075307587, now seen corresponding path program 1 times [2024-11-09 19:26:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:48,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16874907] [2024-11-09 19:26:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 19:26:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16874907] [2024-11-09 19:26:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16874907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:26:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856239377] [2024-11-09 19:26:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:48,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:48,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:48,674 INFO L87 Difference]: Start difference. First operand 8277 states and 18636 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:52,349 INFO L93 Difference]: Finished difference Result 22571 states and 51452 transitions. [2024-11-09 19:26:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:52,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-11-09 19:26:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:52,387 INFO L225 Difference]: With dead ends: 22571 [2024-11-09 19:26:52,387 INFO L226 Difference]: Without dead ends: 14296 [2024-11-09 19:26:52,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:52,400 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 1529 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:52,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 314 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:26:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14296 states. [2024-11-09 19:26:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14296 to 12789. [2024-11-09 19:26:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12789 states, 12788 states have (on average 2.241945573975602) internal successors, (28670), 12788 states have internal predecessors, (28670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12789 states to 12789 states and 28670 transitions. [2024-11-09 19:26:52,760 INFO L78 Accepts]: Start accepts. Automaton has 12789 states and 28670 transitions. Word has length 229 [2024-11-09 19:26:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:52,761 INFO L471 AbstractCegarLoop]: Abstraction has 12789 states and 28670 transitions. [2024-11-09 19:26:52,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 12789 states and 28670 transitions. [2024-11-09 19:26:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-09 19:26:52,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:52,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:52,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:26:52,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:52,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 476044119, now seen corresponding path program 1 times [2024-11-09 19:26:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455277075] [2024-11-09 19:26:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 19:26:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455277075] [2024-11-09 19:26:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455277075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:26:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918066969] [2024-11-09 19:26:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:53,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:53,160 INFO L87 Difference]: Start difference. First operand 12789 states and 28670 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:56,888 INFO L93 Difference]: Finished difference Result 33096 states and 73898 transitions. [2024-11-09 19:26:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2024-11-09 19:26:56,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:56,932 INFO L225 Difference]: With dead ends: 33096 [2024-11-09 19:26:56,932 INFO L226 Difference]: Without dead ends: 20309 [2024-11-09 19:26:56,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:56,952 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1378 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:56,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 430 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:26:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2024-11-09 19:26:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 17301. [2024-11-09 19:26:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17301 states, 17300 states have (on average 2.0902890173410404) internal successors, (36162), 17300 states have internal predecessors, (36162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17301 states to 17301 states and 36162 transitions. [2024-11-09 19:26:57,371 INFO L78 Accepts]: Start accepts. Automaton has 17301 states and 36162 transitions. Word has length 250 [2024-11-09 19:26:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:57,372 INFO L471 AbstractCegarLoop]: Abstraction has 17301 states and 36162 transitions. [2024-11-09 19:26:57,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17301 states and 36162 transitions. [2024-11-09 19:26:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-09 19:26:57,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:57,377 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:57,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:26:57,378 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 239584275, now seen corresponding path program 1 times [2024-11-09 19:26:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:57,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745621451] [2024-11-09 19:26:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 19:26:57,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745621451] [2024-11-09 19:26:57,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745621451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223381218] [2024-11-09 19:26:57,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:57,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:57,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:57,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:57,604 INFO L87 Difference]: Start difference. First operand 17301 states and 36162 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:01,662 INFO L93 Difference]: Finished difference Result 48888 states and 102536 transitions. [2024-11-09 19:27:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2024-11-09 19:27:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:01,712 INFO L225 Difference]: With dead ends: 48888 [2024-11-09 19:27:01,713 INFO L226 Difference]: Without dead ends: 31589 [2024-11-09 19:27:01,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:01,731 INFO L432 NwaCegarLoop]: 2029 mSDtfsCounter, 1349 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 4447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:01,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 2039 Invalid, 4447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:27:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31589 states. [2024-11-09 19:27:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31589 to 30085. [2024-11-09 19:27:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30085 states, 30084 states have (on average 2.08010902805478) internal successors, (62578), 30084 states have internal predecessors, (62578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30085 states to 30085 states and 62578 transitions. [2024-11-09 19:27:02,147 INFO L78 Accepts]: Start accepts. Automaton has 30085 states and 62578 transitions. Word has length 312 [2024-11-09 19:27:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:02,148 INFO L471 AbstractCegarLoop]: Abstraction has 30085 states and 62578 transitions. [2024-11-09 19:27:02,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 30085 states and 62578 transitions. [2024-11-09 19:27:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-09 19:27:02,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:02,154 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:02,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:27:02,154 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:02,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2009515641, now seen corresponding path program 1 times [2024-11-09 19:27:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194181328] [2024-11-09 19:27:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:27:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194181328] [2024-11-09 19:27:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194181328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465124255] [2024-11-09 19:27:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:02,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:02,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:02,554 INFO L87 Difference]: Start difference. First operand 30085 states and 62578 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:06,433 INFO L93 Difference]: Finished difference Result 74456 states and 156176 transitions. [2024-11-09 19:27:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2024-11-09 19:27:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:06,494 INFO L225 Difference]: With dead ends: 74456 [2024-11-09 19:27:06,495 INFO L226 Difference]: Without dead ends: 44373 [2024-11-09 19:27:06,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:06,520 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1414 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:06,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 363 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 3580 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:27:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44373 states. [2024-11-09 19:27:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44373 to 43621. [2024-11-09 19:27:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43621 states, 43620 states have (on average 2.0780375974323704) internal successors, (90644), 43620 states have internal predecessors, (90644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43621 states to 43621 states and 90644 transitions. [2024-11-09 19:27:07,367 INFO L78 Accepts]: Start accepts. Automaton has 43621 states and 90644 transitions. Word has length 316 [2024-11-09 19:27:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:07,367 INFO L471 AbstractCegarLoop]: Abstraction has 43621 states and 90644 transitions. [2024-11-09 19:27:07,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 43621 states and 90644 transitions. [2024-11-09 19:27:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-11-09 19:27:07,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:07,378 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:07,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:27:07,379 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:07,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1180622119, now seen corresponding path program 1 times [2024-11-09 19:27:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:07,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631722496] [2024-11-09 19:27:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:27:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631722496] [2024-11-09 19:27:07,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631722496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:07,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:07,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149282105] [2024-11-09 19:27:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:07,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:07,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:07,648 INFO L87 Difference]: Start difference. First operand 43621 states and 90644 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:11,671 INFO L93 Difference]: Finished difference Result 108296 states and 225716 transitions. [2024-11-09 19:27:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-11-09 19:27:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:11,771 INFO L225 Difference]: With dead ends: 108296 [2024-11-09 19:27:11,771 INFO L226 Difference]: Without dead ends: 64677 [2024-11-09 19:27:11,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:11,803 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1446 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:11,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 362 Invalid, 4320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:27:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64677 states. [2024-11-09 19:27:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64677 to 63173. [2024-11-09 19:27:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63173 states, 63172 states have (on average 2.0723263471158107) internal successors, (130913), 63172 states have internal predecessors, (130913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63173 states to 63173 states and 130913 transitions. [2024-11-09 19:27:13,131 INFO L78 Accepts]: Start accepts. Automaton has 63173 states and 130913 transitions. Word has length 348 [2024-11-09 19:27:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:13,132 INFO L471 AbstractCegarLoop]: Abstraction has 63173 states and 130913 transitions. [2024-11-09 19:27:13,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 63173 states and 130913 transitions. [2024-11-09 19:27:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-09 19:27:13,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:13,141 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:13,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:27:13,142 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:13,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash 778272107, now seen corresponding path program 1 times [2024-11-09 19:27:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146647962] [2024-11-09 19:27:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 19:27:13,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146647962] [2024-11-09 19:27:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146647962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:13,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:13,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338234808] [2024-11-09 19:27:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:13,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:13,625 INFO L87 Difference]: Start difference. First operand 63173 states and 130913 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:17,868 INFO L93 Difference]: Finished difference Result 151912 states and 317332 transitions. [2024-11-09 19:27:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:17,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 368 [2024-11-09 19:27:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:18,004 INFO L225 Difference]: With dead ends: 151912 [2024-11-09 19:27:18,004 INFO L226 Difference]: Without dead ends: 88741 [2024-11-09 19:27:18,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:18,032 INFO L432 NwaCegarLoop]: 1923 mSDtfsCounter, 1358 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 4083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:18,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1933 Invalid, 4083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:27:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88741 states. [2024-11-09 19:27:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88741 to 88741. [2024-11-09 19:27:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88741 states, 88740 states have (on average 2.0495605138607167) internal successors, (181878), 88740 states have internal predecessors, (181878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88741 states to 88741 states and 181878 transitions. [2024-11-09 19:27:19,773 INFO L78 Accepts]: Start accepts. Automaton has 88741 states and 181878 transitions. Word has length 368 [2024-11-09 19:27:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:19,774 INFO L471 AbstractCegarLoop]: Abstraction has 88741 states and 181878 transitions. [2024-11-09 19:27:19,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 88741 states and 181878 transitions. [2024-11-09 19:27:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-09 19:27:19,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:19,787 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:19,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:27:19,787 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:19,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2073197089, now seen corresponding path program 1 times [2024-11-09 19:27:19,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:19,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562809111] [2024-11-09 19:27:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:27:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562809111] [2024-11-09 19:27:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562809111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:20,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288984037] [2024-11-09 19:27:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:20,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:20,336 INFO L87 Difference]: Start difference. First operand 88741 states and 181878 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:24,811 INFO L93 Difference]: Finished difference Result 199288 states and 411314 transitions. [2024-11-09 19:27:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:24,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 372 [2024-11-09 19:27:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:25,261 INFO L225 Difference]: With dead ends: 199288 [2024-11-09 19:27:25,261 INFO L226 Difference]: Without dead ends: 110549 [2024-11-09 19:27:25,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:25,304 INFO L432 NwaCegarLoop]: 1965 mSDtfsCounter, 1353 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3607 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 4058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:25,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 1975 Invalid, 4058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 3607 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:27:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110549 states. [2024-11-09 19:27:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110549 to 110549. [2024-11-09 19:27:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110549 states, 110548 states have (on average 2.0331349278141624) internal successors, (224759), 110548 states have internal predecessors, (224759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110549 states to 110549 states and 224759 transitions. [2024-11-09 19:27:27,039 INFO L78 Accepts]: Start accepts. Automaton has 110549 states and 224759 transitions. Word has length 372 [2024-11-09 19:27:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:27,039 INFO L471 AbstractCegarLoop]: Abstraction has 110549 states and 224759 transitions. [2024-11-09 19:27:27,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 110549 states and 224759 transitions. [2024-11-09 19:27:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-09 19:27:27,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:27,044 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:27,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:27:27,045 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:27,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 612624211, now seen corresponding path program 1 times [2024-11-09 19:27:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:27,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739513583] [2024-11-09 19:27:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat