./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 032103455c965390b2cd90e1021eb4797074287a2ad4fda3336b307fb716d96d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:20:58,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:20:59,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:20:59,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:20:59,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:20:59,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:20:59,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:20:59,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:20:59,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:20:59,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:20:59,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:20:59,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:20:59,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:20:59,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:20:59,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:20:59,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:20:59,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:20:59,093 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:20:59,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:20:59,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:20:59,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:20:59,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:20:59,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:20:59,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:20:59,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:20:59,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:20:59,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:20:59,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:20:59,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:20:59,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:20:59,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:20:59,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:20:59,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:20:59,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:20:59,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:20:59,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:20:59,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 032103455c965390b2cd90e1021eb4797074287a2ad4fda3336b307fb716d96d [2024-11-22 10:20:59,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:20:59,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:20:59,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:20:59,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:20:59,321 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:20:59,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-22 10:21:00,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:21:00,799 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:21:00,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-22 10:21:00,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51b1a032/6995ff4933eb4778a504eb52c30d66a4/FLAG881925088 [2024-11-22 10:21:00,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51b1a032/6995ff4933eb4778a504eb52c30d66a4 [2024-11-22 10:21:00,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:21:00,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:21:00,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:21:00,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:21:00,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:21:00,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:21:00" (1/1) ... [2024-11-22 10:21:00,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a610ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:00, skipping insertion in model container [2024-11-22 10:21:00,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:21:00" (1/1) ... [2024-11-22 10:21:00,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:21:01,012 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i[916,929] [2024-11-22 10:21:01,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:21:01,129 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:21:01,139 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i[916,929] [2024-11-22 10:21:01,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:21:01,204 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:21:01,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01 WrapperNode [2024-11-22 10:21:01,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:21:01,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:21:01,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:21:01,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:21:01,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,280 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 217 [2024-11-22 10:21:01,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:21:01,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:21:01,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:21:01,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:21:01,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,335 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]. [2024-11-22 10:21:01,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:21:01,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:21:01,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:21:01,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:21:01,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (1/1) ... [2024-11-22 10:21:01,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:21:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:21:01,410 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) [2024-11-22 10:21:01,413 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 [2024-11-22 10:21:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:21:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:21:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:21:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:21:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:21:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:21:01,536 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:21:01,538 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:21:01,974 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-22 10:21:01,974 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:21:01,988 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:21:01,988 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:21:01,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:21:01 BoogieIcfgContainer [2024-11-22 10:21:01,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:21:01,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:21:01,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:21:01,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:21:01,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:21:00" (1/3) ... [2024-11-22 10:21:01,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5fe6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:21:01, skipping insertion in model container [2024-11-22 10:21:01,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:21:01" (2/3) ... [2024-11-22 10:21:01,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5fe6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:21:01, skipping insertion in model container [2024-11-22 10:21:01,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:21:01" (3/3) ... [2024-11-22 10:21:01,996 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-22 10:21:02,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:21:02,011 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:21:02,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:21:02,072 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;@4ef9648e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:21:02,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:21:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 10:21:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:02,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:02,090 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:02,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:02,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1384575058, now seen corresponding path program 1 times [2024-11-22 10:21:02,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:02,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089126647] [2024-11-22 10:21:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:02,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-22 10:21:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089126647] [2024-11-22 10:21:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089126647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:21:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067963919] [2024-11-22 10:21:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:02,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:21:02,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:21:02,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:21:02,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 10:21:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:02,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:21:02,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:21:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-22 10:21:02,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:21:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067963919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:02,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:21:02,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:21:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353224182] [2024-11-22 10:21:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:02,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:21:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:21:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:21:02,607 INFO L87 Difference]: Start difference. First operand has 90 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-22 10:21:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:02,634 INFO L93 Difference]: Finished difference Result 175 states and 293 transitions. [2024-11-22 10:21:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:21:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 143 [2024-11-22 10:21:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:02,643 INFO L225 Difference]: With dead ends: 175 [2024-11-22 10:21:02,643 INFO L226 Difference]: Without dead ends: 84 [2024-11-22 10:21:02,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:21:02,649 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:02,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:21:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-22 10:21:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-22 10:21:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 10:21:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2024-11-22 10:21:02,684 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 143 [2024-11-22 10:21:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:02,685 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2024-11-22 10:21:02,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-22 10:21:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2024-11-22 10:21:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:02,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:02,688 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:02,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 10:21:02,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 10:21:02,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:02,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1680373646, now seen corresponding path program 1 times [2024-11-22 10:21:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694769037] [2024-11-22 10:21:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:03,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694769037] [2024-11-22 10:21:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694769037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:03,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:03,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:21:03,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698175868] [2024-11-22 10:21:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:03,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:21:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:03,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:21:03,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:21:03,088 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:03,112 INFO L93 Difference]: Finished difference Result 166 states and 251 transitions. [2024-11-22 10:21:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:21:03,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:03,116 INFO L225 Difference]: With dead ends: 166 [2024-11-22 10:21:03,141 INFO L226 Difference]: Without dead ends: 85 [2024-11-22 10:21:03,142 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 [2024-11-22 10:21:03,144 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:03,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:21:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-22 10:21:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-22 10:21:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 10:21:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2024-11-22 10:21:03,156 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 143 [2024-11-22 10:21:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:03,158 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2024-11-22 10:21:03,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2024-11-22 10:21:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:03,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:03,160 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:03,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:21:03,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:03,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash -849713454, now seen corresponding path program 1 times [2024-11-22 10:21:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904610597] [2024-11-22 10:21:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:03,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:03,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904610597] [2024-11-22 10:21:03,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904610597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:03,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:21:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298691193] [2024-11-22 10:21:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:03,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:21:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:21:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:21:03,493 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:03,647 INFO L93 Difference]: Finished difference Result 250 states and 376 transitions. [2024-11-22 10:21:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:21:03,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:03,652 INFO L225 Difference]: With dead ends: 250 [2024-11-22 10:21:03,652 INFO L226 Difference]: Without dead ends: 168 [2024-11-22 10:21:03,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:21:03,655 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 93 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:03,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:21:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-22 10:21:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 132. [2024-11-22 10:21:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 10:21:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 199 transitions. [2024-11-22 10:21:03,681 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 199 transitions. Word has length 143 [2024-11-22 10:21:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:03,681 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 199 transitions. [2024-11-22 10:21:03,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 199 transitions. [2024-11-22 10:21:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:03,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:03,686 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:03,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:21:03,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:03,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash -983726960, now seen corresponding path program 1 times [2024-11-22 10:21:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:03,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813394795] [2024-11-22 10:21:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813394795] [2024-11-22 10:21:04,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813394795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:04,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:04,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:21:04,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834210316] [2024-11-22 10:21:04,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:04,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:21:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:21:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:21:04,074 INFO L87 Difference]: Start difference. First operand 132 states and 199 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:04,212 INFO L93 Difference]: Finished difference Result 317 states and 471 transitions. [2024-11-22 10:21:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:21:04,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:04,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:04,216 INFO L225 Difference]: With dead ends: 317 [2024-11-22 10:21:04,217 INFO L226 Difference]: Without dead ends: 235 [2024-11-22 10:21:04,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:21:04,218 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 191 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:04,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 292 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:21:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-22 10:21:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 186. [2024-11-22 10:21:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 135 states have internal predecessors, (182), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 10:21:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 278 transitions. [2024-11-22 10:21:04,251 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 278 transitions. Word has length 143 [2024-11-22 10:21:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:04,252 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 278 transitions. [2024-11-22 10:21:04,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 278 transitions. [2024-11-22 10:21:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:04,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:04,257 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:04,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 10:21:04,258 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:04,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1348004724, now seen corresponding path program 1 times [2024-11-22 10:21:04,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:04,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943113013] [2024-11-22 10:21:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:04,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:12,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:12,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943113013] [2024-11-22 10:21:12,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943113013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:12,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:12,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 10:21:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43994961] [2024-11-22 10:21:12,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:12,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 10:21:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:12,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 10:21:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:21:12,522 INFO L87 Difference]: Start difference. First operand 186 states and 278 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:14,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:14,492 INFO L93 Difference]: Finished difference Result 801 states and 1158 transitions. [2024-11-22 10:21:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 10:21:14,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:14,497 INFO L225 Difference]: With dead ends: 801 [2024-11-22 10:21:14,497 INFO L226 Difference]: Without dead ends: 666 [2024-11-22 10:21:14,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2024-11-22 10:21:14,498 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 876 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:14,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 800 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 10:21:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-22 10:21:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 229. [2024-11-22 10:21:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 177 states have (on average 1.384180790960452) internal successors, (245), 178 states have internal predecessors, (245), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 10:21:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 341 transitions. [2024-11-22 10:21:14,515 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 341 transitions. Word has length 143 [2024-11-22 10:21:14,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:14,516 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 341 transitions. [2024-11-22 10:21:14,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 341 transitions. [2024-11-22 10:21:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:14,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:14,517 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:14,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:21:14,518 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:14,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2137615946, now seen corresponding path program 1 times [2024-11-22 10:21:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872394351] [2024-11-22 10:21:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872394351] [2024-11-22 10:21:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872394351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:20,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 10:21:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686286647] [2024-11-22 10:21:20,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:20,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 10:21:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 10:21:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-22 10:21:20,580 INFO L87 Difference]: Start difference. First operand 229 states and 341 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:22,760 INFO L93 Difference]: Finished difference Result 886 states and 1293 transitions. [2024-11-22 10:21:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 10:21:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:22,764 INFO L225 Difference]: With dead ends: 886 [2024-11-22 10:21:22,764 INFO L226 Difference]: Without dead ends: 708 [2024-11-22 10:21:22,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2024-11-22 10:21:22,765 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 682 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:22,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 916 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 10:21:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-22 10:21:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 294. [2024-11-22 10:21:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 242 states have (on average 1.4173553719008265) internal successors, (343), 243 states have internal predecessors, (343), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 10:21:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 439 transitions. [2024-11-22 10:21:22,784 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 439 transitions. Word has length 143 [2024-11-22 10:21:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:22,784 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 439 transitions. [2024-11-22 10:21:22,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 439 transitions. [2024-11-22 10:21:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:22,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:22,786 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:22,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:21:22,786 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:22,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -561025134, now seen corresponding path program 1 times [2024-11-22 10:21:22,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:22,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867362520] [2024-11-22 10:21:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867362520] [2024-11-22 10:21:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867362520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:21:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314718330] [2024-11-22 10:21:22,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:22,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:21:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:21:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:21:22,987 INFO L87 Difference]: Start difference. First operand 294 states and 439 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:23,116 INFO L93 Difference]: Finished difference Result 556 states and 825 transitions. [2024-11-22 10:21:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:21:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:23,119 INFO L225 Difference]: With dead ends: 556 [2024-11-22 10:21:23,119 INFO L226 Difference]: Without dead ends: 331 [2024-11-22 10:21:23,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:21:23,120 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 142 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:23,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 457 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:21:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-22 10:21:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 293. [2024-11-22 10:21:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.4066390041493777) internal successors, (339), 242 states have internal predecessors, (339), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 10:21:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 435 transitions. [2024-11-22 10:21:23,137 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 435 transitions. Word has length 143 [2024-11-22 10:21:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:23,137 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 435 transitions. [2024-11-22 10:21:23,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 435 transitions. [2024-11-22 10:21:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 10:21:23,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:23,139 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:23,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 10:21:23,140 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:23,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1370371760, now seen corresponding path program 1 times [2024-11-22 10:21:23,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:23,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372967954] [2024-11-22 10:21:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:23,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:26,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:26,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372967954] [2024-11-22 10:21:26,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372967954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:26,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:26,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 10:21:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645083927] [2024-11-22 10:21:26,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:26,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 10:21:26,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 10:21:26,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-22 10:21:26,940 INFO L87 Difference]: Start difference. First operand 293 states and 435 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:28,167 INFO L93 Difference]: Finished difference Result 942 states and 1375 transitions. [2024-11-22 10:21:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 10:21:28,167 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-22 10:21:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:28,170 INFO L225 Difference]: With dead ends: 942 [2024-11-22 10:21:28,170 INFO L226 Difference]: Without dead ends: 717 [2024-11-22 10:21:28,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-22 10:21:28,172 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 588 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:28,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 708 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 10:21:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-22 10:21:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 354. [2024-11-22 10:21:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 302 states have (on average 1.413907284768212) internal successors, (427), 303 states have internal predecessors, (427), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 10:21:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 523 transitions. [2024-11-22 10:21:28,195 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 523 transitions. Word has length 143 [2024-11-22 10:21:28,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:28,196 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 523 transitions. [2024-11-22 10:21:28,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 523 transitions. [2024-11-22 10:21:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:28,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:28,197 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:28,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 10:21:28,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:28,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1763716426, now seen corresponding path program 1 times [2024-11-22 10:21:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139678587] [2024-11-22 10:21:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:31,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139678587] [2024-11-22 10:21:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139678587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:31,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:21:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651632375] [2024-11-22 10:21:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:31,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:21:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:21:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:21:31,562 INFO L87 Difference]: Start difference. First operand 354 states and 523 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:32,680 INFO L93 Difference]: Finished difference Result 1066 states and 1560 transitions. [2024-11-22 10:21:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 10:21:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:32,684 INFO L225 Difference]: With dead ends: 1066 [2024-11-22 10:21:32,684 INFO L226 Difference]: Without dead ends: 804 [2024-11-22 10:21:32,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2024-11-22 10:21:32,688 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 633 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:32,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 671 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 10:21:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-22 10:21:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 334. [2024-11-22 10:21:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 282 states have (on average 1.4148936170212767) internal successors, (399), 283 states have internal predecessors, (399), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 10:21:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 495 transitions. [2024-11-22 10:21:32,706 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 495 transitions. Word has length 144 [2024-11-22 10:21:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:32,706 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 495 transitions. [2024-11-22 10:21:32,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 495 transitions. [2024-11-22 10:21:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:32,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:32,708 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:32,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 10:21:32,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:32,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -785454913, now seen corresponding path program 1 times [2024-11-22 10:21:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:32,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855368329] [2024-11-22 10:21:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:32,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:32,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855368329] [2024-11-22 10:21:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855368329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:32,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:32,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:21:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259418337] [2024-11-22 10:21:32,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:32,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:21:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:21:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:21:32,782 INFO L87 Difference]: Start difference. First operand 334 states and 495 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:32,819 INFO L93 Difference]: Finished difference Result 747 states and 1100 transitions. [2024-11-22 10:21:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:21:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:32,822 INFO L225 Difference]: With dead ends: 747 [2024-11-22 10:21:32,822 INFO L226 Difference]: Without dead ends: 492 [2024-11-22 10:21:32,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:21:32,824 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:32,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 341 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:21:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-22 10:21:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 488. [2024-11-22 10:21:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 421 states have (on average 1.3966745843230404) internal successors, (588), 424 states have internal predecessors, (588), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 10:21:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 708 transitions. [2024-11-22 10:21:32,843 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 708 transitions. Word has length 144 [2024-11-22 10:21:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:32,844 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 708 transitions. [2024-11-22 10:21:32,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 708 transitions. [2024-11-22 10:21:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:32,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:32,845 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:32,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 10:21:32,845 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:32,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1449621624, now seen corresponding path program 1 times [2024-11-22 10:21:32,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:32,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867688157] [2024-11-22 10:21:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:32,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:36,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:36,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867688157] [2024-11-22 10:21:36,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867688157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:36,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:36,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:21:36,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241396782] [2024-11-22 10:21:36,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:36,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:21:36,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:21:36,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:21:36,284 INFO L87 Difference]: Start difference. First operand 488 states and 708 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:37,543 INFO L93 Difference]: Finished difference Result 1398 states and 2007 transitions. [2024-11-22 10:21:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 10:21:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:37,547 INFO L225 Difference]: With dead ends: 1398 [2024-11-22 10:21:37,547 INFO L226 Difference]: Without dead ends: 1017 [2024-11-22 10:21:37,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-22 10:21:37,548 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 450 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:37,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 695 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:21:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-22 10:21:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 453. [2024-11-22 10:21:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 386 states have (on average 1.3963730569948187) internal successors, (539), 389 states have internal predecessors, (539), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 10:21:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 659 transitions. [2024-11-22 10:21:37,570 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 659 transitions. Word has length 144 [2024-11-22 10:21:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:37,571 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 659 transitions. [2024-11-22 10:21:37,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 659 transitions. [2024-11-22 10:21:37,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:37,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:37,572 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:37,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 10:21:37,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:37,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 149079318, now seen corresponding path program 1 times [2024-11-22 10:21:37,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:37,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686517371] [2024-11-22 10:21:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:38,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686517371] [2024-11-22 10:21:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686517371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:38,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:38,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:21:38,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589301132] [2024-11-22 10:21:38,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:38,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:21:38,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:21:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:21:38,368 INFO L87 Difference]: Start difference. First operand 453 states and 659 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:39,248 INFO L93 Difference]: Finished difference Result 1414 states and 2021 transitions. [2024-11-22 10:21:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 10:21:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:39,253 INFO L225 Difference]: With dead ends: 1414 [2024-11-22 10:21:39,253 INFO L226 Difference]: Without dead ends: 1013 [2024-11-22 10:21:39,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-22 10:21:39,254 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 390 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:39,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1129 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:21:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2024-11-22 10:21:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 815. [2024-11-22 10:21:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 742 states have (on average 1.4258760107816713) internal successors, (1058), 747 states have internal predecessors, (1058), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-22 10:21:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1186 transitions. [2024-11-22 10:21:39,283 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1186 transitions. Word has length 144 [2024-11-22 10:21:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:39,283 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1186 transitions. [2024-11-22 10:21:39,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1186 transitions. [2024-11-22 10:21:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:39,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:39,284 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:39,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 10:21:39,284 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:39,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1381127770, now seen corresponding path program 1 times [2024-11-22 10:21:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:39,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321403738] [2024-11-22 10:21:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:39,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:39,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321403738] [2024-11-22 10:21:39,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321403738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:39,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:39,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:21:39,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372771895] [2024-11-22 10:21:39,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:39,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:21:39,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:21:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:21:39,491 INFO L87 Difference]: Start difference. First operand 815 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:39,622 INFO L93 Difference]: Finished difference Result 1653 states and 2395 transitions. [2024-11-22 10:21:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:21:39,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:39,627 INFO L225 Difference]: With dead ends: 1653 [2024-11-22 10:21:39,627 INFO L226 Difference]: Without dead ends: 1217 [2024-11-22 10:21:39,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:21:39,630 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 216 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:39,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 490 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:21:39,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-22 10:21:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 861. [2024-11-22 10:21:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 788 states have (on average 1.4238578680203047) internal successors, (1122), 793 states have internal predecessors, (1122), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-22 10:21:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1250 transitions. [2024-11-22 10:21:39,666 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1250 transitions. Word has length 144 [2024-11-22 10:21:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:39,667 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1250 transitions. [2024-11-22 10:21:39,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1250 transitions. [2024-11-22 10:21:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:39,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:39,669 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:39,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 10:21:39,669 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:39,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -245867306, now seen corresponding path program 1 times [2024-11-22 10:21:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:39,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065983454] [2024-11-22 10:21:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:39,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:39,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065983454] [2024-11-22 10:21:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065983454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:39,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:21:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971852015] [2024-11-22 10:21:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:39,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:21:39,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:39,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:21:39,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:21:39,710 INFO L87 Difference]: Start difference. First operand 861 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:39,768 INFO L93 Difference]: Finished difference Result 1636 states and 2360 transitions. [2024-11-22 10:21:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:21:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:39,773 INFO L225 Difference]: With dead ends: 1636 [2024-11-22 10:21:39,773 INFO L226 Difference]: Without dead ends: 1068 [2024-11-22 10:21:39,774 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 [2024-11-22 10:21:39,775 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:39,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 237 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:21:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-11-22 10:21:39,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 865. [2024-11-22 10:21:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 785 states have (on average 1.4063694267515923) internal successors, (1104), 792 states have internal predecessors, (1104), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 61 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 10:21:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1240 transitions. [2024-11-22 10:21:39,812 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1240 transitions. Word has length 144 [2024-11-22 10:21:39,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:39,814 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1240 transitions. [2024-11-22 10:21:39,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1240 transitions. [2024-11-22 10:21:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 10:21:39,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:39,815 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:39,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 10:21:39,815 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:39,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash 207503380, now seen corresponding path program 1 times [2024-11-22 10:21:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:39,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323972504] [2024-11-22 10:21:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:39,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:21:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 10:21:42,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:21:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323972504] [2024-11-22 10:21:42,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323972504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:21:42,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:21:42,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 10:21:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247146138] [2024-11-22 10:21:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:21:42,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 10:21:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:21:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 10:21:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-22 10:21:42,871 INFO L87 Difference]: Start difference. First operand 865 states and 1240 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:21:44,412 INFO L93 Difference]: Finished difference Result 1430 states and 2005 transitions. [2024-11-22 10:21:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 10:21:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-22 10:21:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:21:44,417 INFO L225 Difference]: With dead ends: 1430 [2024-11-22 10:21:44,417 INFO L226 Difference]: Without dead ends: 1016 [2024-11-22 10:21:44,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2024-11-22 10:21:44,418 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 429 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:21:44,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1069 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 10:21:44,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-22 10:21:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 897. [2024-11-22 10:21:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 804 states have (on average 1.3955223880597014) internal successors, (1122), 811 states have internal predecessors, (1122), 76 states have call successors, (76), 16 states have call predecessors, (76), 16 states have return successors, (76), 69 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-22 10:21:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1274 transitions. [2024-11-22 10:21:44,458 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1274 transitions. Word has length 144 [2024-11-22 10:21:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:21:44,458 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1274 transitions. [2024-11-22 10:21:44,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 10:21:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1274 transitions. [2024-11-22 10:21:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 10:21:44,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:21:44,459 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:21:44,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 10:21:44,459 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:21:44,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:21:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1304528217, now seen corresponding path program 1 times [2024-11-22 10:21:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:21:44,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456715332] [2024-11-22 10:21:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:21:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:21:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:22:05,340 WARN L286 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 166 DAG size of output: 162 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-22 10:22:19,507 WARN L286 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 167 DAG size of output: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)