./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-59.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 de250e698353300b92fbda09a3574b6585e17ad9b997292e380e70bbb71bed02 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:30:02,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:30:02,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:30:02,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:30:02,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:30:02,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:30:02,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:30:02,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:30:02,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:30:02,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:30:02,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:30:02,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:30:02,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:30:02,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:30:02,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:30:02,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:30:02,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:30:02,512 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:30:02,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:30:02,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:30:02,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:30:02,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:30:02,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:30:02,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:30:02,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:30:02,515 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:30:02,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:30:02,515 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:30:02,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:30:02,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:30:02,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:30:02,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:30:02,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:30:02,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:30:02,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:30:02,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:30:02,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:30:02,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:30:02,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:30:02,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:30:02,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:30:02,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:30:02,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de250e698353300b92fbda09a3574b6585e17ad9b997292e380e70bbb71bed02 [2024-11-18 23:30:02,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:30:02,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:30:02,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:30:02,821 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:30:02,821 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:30:02,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-59.i [2024-11-18 23:30:04,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:30:04,620 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:30:04,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-59.i [2024-11-18 23:30:04,630 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc849e3b9/ccdf91dc73fd4fb08c78aff90afc87af/FLAGc73ac3d06 [2024-11-18 23:30:04,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc849e3b9/ccdf91dc73fd4fb08c78aff90afc87af [2024-11-18 23:30:04,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:30:04,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:30:04,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:30:04,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:30:04,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:30:04,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:04" (1/1) ... [2024-11-18 23:30:04,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228e1107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:04, skipping insertion in model container [2024-11-18 23:30:04,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:04" (1/1) ... [2024-11-18 23:30:04,701 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:30:04,903 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_operatoramount_amount100_file-59.i[916,929] [2024-11-18 23:30:05,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:30:05,035 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:30:05,049 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_operatoramount_amount100_file-59.i[916,929] [2024-11-18 23:30:05,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:30:05,196 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:30:05,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05 WrapperNode [2024-11-18 23:30:05,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:30:05,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:30:05,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:30:05,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:30:05,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,277 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 257 [2024-11-18 23:30:05,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:30:05,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:30:05,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:30:05,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:30:05,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,344 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:30:05,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:30:05,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:30:05,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:30:05,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:30:05,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (1/1) ... [2024-11-18 23:30:05,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:30:05,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:05,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:30:05,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:30:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:30:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:30:05,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:30:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:30:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:30:05,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:30:05,614 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:30:05,618 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:30:06,213 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-18 23:30:06,213 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:30:06,231 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:30:06,231 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:30:06,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:06 BoogieIcfgContainer [2024-11-18 23:30:06,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:30:06,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:30:06,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:30:06,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:30:06,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:30:04" (1/3) ... [2024-11-18 23:30:06,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1986a5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:06, skipping insertion in model container [2024-11-18 23:30:06,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:05" (2/3) ... [2024-11-18 23:30:06,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1986a5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:06, skipping insertion in model container [2024-11-18 23:30:06,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:06" (3/3) ... [2024-11-18 23:30:06,243 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-59.i [2024-11-18 23:30:06,262 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:30:06,262 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:30:06,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:30:06,347 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;@3ac6674f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:30:06,347 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:30:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 87 states have internal predecessors, (131), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 23:30:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 23:30:06,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:06,392 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:06,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:06,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1113021717, now seen corresponding path program 1 times [2024-11-18 23:30:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587006416] [2024-11-18 23:30:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:06,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-18 23:30:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587006416] [2024-11-18 23:30:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587006416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544005677] [2024-11-18 23:30:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:06,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:06,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:30:06,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:30:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:06,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:30:06,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-18 23:30:07,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:30:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544005677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:07,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:30:07,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:30:07,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317070667] [2024-11-18 23:30:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:07,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:30:07,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:30:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:30:07,058 INFO L87 Difference]: Start difference. First operand has 110 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 87 states have internal predecessors, (131), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 23:30:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:07,099 INFO L93 Difference]: Finished difference Result 213 states and 361 transitions. [2024-11-18 23:30:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:30:07,102 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 148 [2024-11-18 23:30:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:07,113 INFO L225 Difference]: With dead ends: 213 [2024-11-18 23:30:07,114 INFO L226 Difference]: Without dead ends: 106 [2024-11-18 23:30:07,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:30:07,124 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:07,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:30:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-18 23:30:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-18 23:30:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4819277108433735) internal successors, (123), 83 states have internal predecessors, (123), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 23:30:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 165 transitions. [2024-11-18 23:30:07,179 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 165 transitions. Word has length 148 [2024-11-18 23:30:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:07,180 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 165 transitions. [2024-11-18 23:30:07,181 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 23:30:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 165 transitions. [2024-11-18 23:30:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 23:30:07,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:07,185 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:07,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:30:07,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:30:07,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:07,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 454760795, now seen corresponding path program 1 times [2024-11-18 23:30:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386113001] [2024-11-18 23:30:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:07,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:07,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386113001] [2024-11-18 23:30:07,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386113001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:07,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:07,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:30:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436706482] [2024-11-18 23:30:07,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:07,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:30:07,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:30:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:07,726 INFO L87 Difference]: Start difference. First operand 106 states and 165 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, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:07,848 INFO L93 Difference]: Finished difference Result 309 states and 483 transitions. [2024-11-18 23:30:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:30:07,852 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, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 148 [2024-11-18 23:30:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:07,856 INFO L225 Difference]: With dead ends: 309 [2024-11-18 23:30:07,857 INFO L226 Difference]: Without dead ends: 206 [2024-11-18 23:30:07,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:07,861 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 153 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:07,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 355 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-18 23:30:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2024-11-18 23:30:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 159 states have (on average 1.440251572327044) internal successors, (229), 159 states have internal predecessors, (229), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 313 transitions. [2024-11-18 23:30:07,904 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 313 transitions. Word has length 148 [2024-11-18 23:30:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:07,905 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 313 transitions. [2024-11-18 23:30:07,905 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, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 313 transitions. [2024-11-18 23:30:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 23:30:07,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:07,913 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:07,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:30:07,914 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:07,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:07,915 INFO L85 PathProgramCache]: Analyzing trace with hash 147531480, now seen corresponding path program 1 times [2024-11-18 23:30:07,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:07,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321159418] [2024-11-18 23:30:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:07,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321159418] [2024-11-18 23:30:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321159418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:08,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:08,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:30:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226480352] [2024-11-18 23:30:08,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:08,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:30:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:30:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:08,276 INFO L87 Difference]: Start difference. First operand 204 states and 313 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, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:08,361 INFO L93 Difference]: Finished difference Result 405 states and 623 transitions. [2024-11-18 23:30:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:30:08,363 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, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 149 [2024-11-18 23:30:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:08,365 INFO L225 Difference]: With dead ends: 405 [2024-11-18 23:30:08,366 INFO L226 Difference]: Without dead ends: 204 [2024-11-18 23:30:08,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:08,372 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 2 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:08,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 290 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-18 23:30:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-18 23:30:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 159 states have (on average 1.4276729559748427) internal successors, (227), 159 states have internal predecessors, (227), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 311 transitions. [2024-11-18 23:30:08,401 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 311 transitions. Word has length 149 [2024-11-18 23:30:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:08,402 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 311 transitions. [2024-11-18 23:30:08,402 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, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 311 transitions. [2024-11-18 23:30:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 23:30:08,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:08,407 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:08,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:30:08,408 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:08,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 226526680, now seen corresponding path program 1 times [2024-11-18 23:30:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:08,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200673353] [2024-11-18 23:30:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:08,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200673353] [2024-11-18 23:30:08,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200673353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:08,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:08,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:08,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514585075] [2024-11-18 23:30:08,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:08,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:08,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:08,745 INFO L87 Difference]: Start difference. First operand 204 states and 311 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:08,782 INFO L93 Difference]: Finished difference Result 409 states and 625 transitions. [2024-11-18 23:30:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:30:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 150 [2024-11-18 23:30:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:08,788 INFO L225 Difference]: With dead ends: 409 [2024-11-18 23:30:08,789 INFO L226 Difference]: Without dead ends: 208 [2024-11-18 23:30:08,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:08,791 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:08,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 475 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:30:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-18 23:30:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-18 23:30:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 163 states have (on average 1.4171779141104295) internal successors, (231), 163 states have internal predecessors, (231), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 315 transitions. [2024-11-18 23:30:08,821 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 315 transitions. Word has length 150 [2024-11-18 23:30:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:08,822 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 315 transitions. [2024-11-18 23:30:08,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 315 transitions. [2024-11-18 23:30:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 23:30:08,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:08,826 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:08,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:30:08,827 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:08,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 906585050, now seen corresponding path program 1 times [2024-11-18 23:30:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:08,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041500717] [2024-11-18 23:30:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041500717] [2024-11-18 23:30:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041500717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:13,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:30:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605323101] [2024-11-18 23:30:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:13,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:30:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:30:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:30:13,820 INFO L87 Difference]: Start difference. First operand 208 states and 315 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:16,403 INFO L93 Difference]: Finished difference Result 813 states and 1223 transitions. [2024-11-18 23:30:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:30:16,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 150 [2024-11-18 23:30:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:16,410 INFO L225 Difference]: With dead ends: 813 [2024-11-18 23:30:16,410 INFO L226 Difference]: Without dead ends: 608 [2024-11-18 23:30:16,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:30:16,412 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 528 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:16,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 919 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 23:30:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-18 23:30:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 277. [2024-11-18 23:30:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 232 states have (on average 1.456896551724138) internal successors, (338), 232 states have internal predecessors, (338), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 422 transitions. [2024-11-18 23:30:16,443 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 422 transitions. Word has length 150 [2024-11-18 23:30:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:16,444 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 422 transitions. [2024-11-18 23:30:16,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:16,444 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 422 transitions. [2024-11-18 23:30:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 23:30:16,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:16,446 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:16,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:30:16,447 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:16,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1940998039, now seen corresponding path program 1 times [2024-11-18 23:30:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:16,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366703548] [2024-11-18 23:30:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:16,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366703548] [2024-11-18 23:30:16,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366703548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:16,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:16,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:30:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741600427] [2024-11-18 23:30:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:16,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:30:16,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:30:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:16,697 INFO L87 Difference]: Start difference. First operand 277 states and 422 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:16,964 INFO L93 Difference]: Finished difference Result 669 states and 1019 transitions. [2024-11-18 23:30:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:30:16,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 150 [2024-11-18 23:30:16,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:16,968 INFO L225 Difference]: With dead ends: 669 [2024-11-18 23:30:16,968 INFO L226 Difference]: Without dead ends: 395 [2024-11-18 23:30:16,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:16,970 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 110 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:16,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 461 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:30:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-18 23:30:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-11-18 23:30:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 324 states have (on average 1.4382716049382716) internal successors, (466), 324 states have internal predecessors, (466), 63 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 23:30:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 592 transitions. [2024-11-18 23:30:16,994 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 592 transitions. Word has length 150 [2024-11-18 23:30:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:16,995 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 592 transitions. [2024-11-18 23:30:16,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 592 transitions. [2024-11-18 23:30:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 23:30:16,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:16,997 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:16,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:30:16,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:16,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 397111960, now seen corresponding path program 1 times [2024-11-18 23:30:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914614000] [2024-11-18 23:30:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:16,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:17,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:17,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914614000] [2024-11-18 23:30:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914614000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:17,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505926986] [2024-11-18 23:30:17,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:17,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:17,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:17,154 INFO L87 Difference]: Start difference. First operand 391 states and 592 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:17,315 INFO L93 Difference]: Finished difference Result 1339 states and 2021 transitions. [2024-11-18 23:30:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:30:17,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 150 [2024-11-18 23:30:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:17,321 INFO L225 Difference]: With dead ends: 1339 [2024-11-18 23:30:17,321 INFO L226 Difference]: Without dead ends: 951 [2024-11-18 23:30:17,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:17,323 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 220 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:17,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 551 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-11-18 23:30:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 704. [2024-11-18 23:30:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 571 states have (on average 1.4203152364273204) internal successors, (811), 571 states have internal predecessors, (811), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 23:30:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1063 transitions. [2024-11-18 23:30:17,383 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1063 transitions. Word has length 150 [2024-11-18 23:30:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:17,386 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1063 transitions. [2024-11-18 23:30:17,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1063 transitions. [2024-11-18 23:30:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 23:30:17,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:17,388 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:17,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:30:17,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:17,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1114584042, now seen corresponding path program 1 times [2024-11-18 23:30:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:17,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58568576] [2024-11-18 23:30:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:17,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:17,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58568576] [2024-11-18 23:30:17,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58568576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:17,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:17,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:30:17,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701420403] [2024-11-18 23:30:17,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:17,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:30:17,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:30:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:17,474 INFO L87 Difference]: Start difference. First operand 704 states and 1063 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:17,550 INFO L93 Difference]: Finished difference Result 1390 states and 2104 transitions. [2024-11-18 23:30:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:30:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 151 [2024-11-18 23:30:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:17,555 INFO L225 Difference]: With dead ends: 1390 [2024-11-18 23:30:17,555 INFO L226 Difference]: Without dead ends: 689 [2024-11-18 23:30:17,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:17,558 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 149 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:17,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 378 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:30:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-18 23:30:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 685. [2024-11-18 23:30:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 552 states have (on average 1.3985507246376812) internal successors, (772), 552 states have internal predecessors, (772), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 23:30:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1024 transitions. [2024-11-18 23:30:17,604 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1024 transitions. Word has length 151 [2024-11-18 23:30:17,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:17,605 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1024 transitions. [2024-11-18 23:30:17,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1024 transitions. [2024-11-18 23:30:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 23:30:17,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:17,607 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:17,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:30:17,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:17,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -156982216, now seen corresponding path program 1 times [2024-11-18 23:30:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503632103] [2024-11-18 23:30:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503632103] [2024-11-18 23:30:18,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503632103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:18,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751691037] [2024-11-18 23:30:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:18,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:18,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:18,176 INFO L87 Difference]: Start difference. First operand 685 states and 1024 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:18,471 INFO L93 Difference]: Finished difference Result 1562 states and 2330 transitions. [2024-11-18 23:30:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:30:18,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 151 [2024-11-18 23:30:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:18,476 INFO L225 Difference]: With dead ends: 1562 [2024-11-18 23:30:18,476 INFO L226 Difference]: Without dead ends: 880 [2024-11-18 23:30:18,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:18,479 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 77 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:18,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 292 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:30:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-18 23:30:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2024-11-18 23:30:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 634 states have (on average 1.4037854889589905) internal successors, (890), 634 states have internal predecessors, (890), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 23:30:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1142 transitions. [2024-11-18 23:30:18,528 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1142 transitions. Word has length 151 [2024-11-18 23:30:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:18,530 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1142 transitions. [2024-11-18 23:30:18,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1142 transitions. [2024-11-18 23:30:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 23:30:18,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:18,533 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:18,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:30:18,533 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:18,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash 338955860, now seen corresponding path program 1 times [2024-11-18 23:30:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148188105] [2024-11-18 23:30:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:18,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:30:21,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:21,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148188105] [2024-11-18 23:30:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148188105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058777799] [2024-11-18 23:30:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:21,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:30:21,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:30:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:22,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:30:22,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:30:22,148 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:30:22,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058777799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:22,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:30:22,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 18 [2024-11-18 23:30:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175967026] [2024-11-18 23:30:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:22,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:30:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:30:22,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-18 23:30:22,150 INFO L87 Difference]: Start difference. First operand 767 states and 1142 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:22,426 INFO L93 Difference]: Finished difference Result 785 states and 1157 transitions. [2024-11-18 23:30:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:30:22,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 155 [2024-11-18 23:30:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:22,430 INFO L225 Difference]: With dead ends: 785 [2024-11-18 23:30:22,430 INFO L226 Difference]: Without dead ends: 287 [2024-11-18 23:30:22,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:30:22,432 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 223 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:22,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 317 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:30:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-18 23:30:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 264. [2024-11-18 23:30:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 217 states have (on average 1.336405529953917) internal successors, (290), 217 states have internal predecessors, (290), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 374 transitions. [2024-11-18 23:30:22,456 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 374 transitions. Word has length 155 [2024-11-18 23:30:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:22,456 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 374 transitions. [2024-11-18 23:30:22,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 374 transitions. [2024-11-18 23:30:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 23:30:22,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:22,460 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:22,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:30:22,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 23:30:22,661 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:22,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1745501111, now seen corresponding path program 1 times [2024-11-18 23:30:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:22,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308454513] [2024-11-18 23:30:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308454513] [2024-11-18 23:30:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308454513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:22,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:30:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332091536] [2024-11-18 23:30:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:22,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:30:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:30:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:22,753 INFO L87 Difference]: Start difference. First operand 264 states and 374 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:22,918 INFO L93 Difference]: Finished difference Result 736 states and 1051 transitions. [2024-11-18 23:30:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:30:22,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 156 [2024-11-18 23:30:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:22,922 INFO L225 Difference]: With dead ends: 736 [2024-11-18 23:30:22,922 INFO L226 Difference]: Without dead ends: 475 [2024-11-18 23:30:22,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:22,924 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 116 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:22,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 255 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-18 23:30:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 367. [2024-11-18 23:30:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 320 states have (on average 1.35) internal successors, (432), 320 states have internal predecessors, (432), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 516 transitions. [2024-11-18 23:30:22,949 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 516 transitions. Word has length 156 [2024-11-18 23:30:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:22,950 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 516 transitions. [2024-11-18 23:30:22,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 516 transitions. [2024-11-18 23:30:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 23:30:22,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:22,952 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:22,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:30:22,953 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:22,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash -337767793, now seen corresponding path program 1 times [2024-11-18 23:30:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:22,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758317461] [2024-11-18 23:30:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:23,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:23,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758317461] [2024-11-18 23:30:23,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758317461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:23,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854834814] [2024-11-18 23:30:23,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:23,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:23,069 INFO L87 Difference]: Start difference. First operand 367 states and 516 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:23,355 INFO L93 Difference]: Finished difference Result 956 states and 1351 transitions. [2024-11-18 23:30:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:30:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 157 [2024-11-18 23:30:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:23,359 INFO L225 Difference]: With dead ends: 956 [2024-11-18 23:30:23,359 INFO L226 Difference]: Without dead ends: 592 [2024-11-18 23:30:23,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:23,361 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 112 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:23,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 489 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:30:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-18 23:30:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 436. [2024-11-18 23:30:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 389 states have (on average 1.3727506426735219) internal successors, (534), 389 states have internal predecessors, (534), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 618 transitions. [2024-11-18 23:30:23,391 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 618 transitions. Word has length 157 [2024-11-18 23:30:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:23,391 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 618 transitions. [2024-11-18 23:30:23,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 618 transitions. [2024-11-18 23:30:23,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 23:30:23,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:23,394 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:23,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:30:23,394 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:23,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash 221184655, now seen corresponding path program 1 times [2024-11-18 23:30:23,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:23,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203141264] [2024-11-18 23:30:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:23,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:30:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203141264] [2024-11-18 23:30:26,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203141264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185124584] [2024-11-18 23:30:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:26,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:26,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:26,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:30:26,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:30:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:26,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 23:30:26,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 136 proven. 159 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2024-11-18 23:30:27,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:30:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185124584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:28,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:30:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2024-11-18 23:30:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077561034] [2024-11-18 23:30:28,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:30:28,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 23:30:28,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:28,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 23:30:28,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:30:28,372 INFO L87 Difference]: Start difference. First operand 436 states and 618 transitions. Second operand has 22 states, 22 states have (on average 5.136363636363637) internal successors, (113), 21 states have internal predecessors, (113), 4 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2024-11-18 23:30:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:30,568 INFO L93 Difference]: Finished difference Result 1015 states and 1406 transitions. [2024-11-18 23:30:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 23:30:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.136363636363637) internal successors, (113), 21 states have internal predecessors, (113), 4 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 157 [2024-11-18 23:30:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:30,571 INFO L225 Difference]: With dead ends: 1015 [2024-11-18 23:30:30,571 INFO L226 Difference]: Without dead ends: 582 [2024-11-18 23:30:30,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=281, Invalid=1359, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 23:30:30,573 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 614 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:30,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 788 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:30:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-18 23:30:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 483. [2024-11-18 23:30:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 430 states have (on average 1.313953488372093) internal successors, (565), 430 states have internal predecessors, (565), 42 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 649 transitions. [2024-11-18 23:30:30,607 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 649 transitions. Word has length 157 [2024-11-18 23:30:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:30,608 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 649 transitions. [2024-11-18 23:30:30,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.136363636363637) internal successors, (113), 21 states have internal predecessors, (113), 4 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2024-11-18 23:30:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 649 transitions. [2024-11-18 23:30:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 23:30:30,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:30,610 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:30,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:30:30,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:30,811 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:30,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 205813930, now seen corresponding path program 1 times [2024-11-18 23:30:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:30,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949217846] [2024-11-18 23:30:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:30:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949217846] [2024-11-18 23:30:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949217846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:34,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686517482] [2024-11-18 23:30:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:34,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:34,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:34,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:30:34,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:30:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:34,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-18 23:30:34,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 495 proven. 201 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 23:30:39,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:30:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 23:30:44,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686517482] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:44,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:30:44,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 31] total 51 [2024-11-18 23:30:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744194426] [2024-11-18 23:30:44,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:44,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:30:44,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:30:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=2164, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 23:30:44,177 INFO L87 Difference]: Start difference. First operand 483 states and 649 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:46,212 INFO L93 Difference]: Finished difference Result 1412 states and 1907 transitions. [2024-11-18 23:30:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 23:30:46,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2024-11-18 23:30:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:46,217 INFO L225 Difference]: With dead ends: 1412 [2024-11-18 23:30:46,218 INFO L226 Difference]: Without dead ends: 1080 [2024-11-18 23:30:46,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=504, Invalid=2918, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 23:30:46,220 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 445 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:46,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 647 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:30:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-18 23:30:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 622. [2024-11-18 23:30:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 569 states have (on average 1.3356766256590509) internal successors, (760), 569 states have internal predecessors, (760), 42 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 23:30:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 844 transitions. [2024-11-18 23:30:46,260 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 844 transitions. Word has length 159 [2024-11-18 23:30:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:46,261 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 844 transitions. [2024-11-18 23:30:46,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 23:30:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 844 transitions. [2024-11-18 23:30:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 23:30:46,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:46,263 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:46,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 23:30:46,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:46,464 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:46,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1483129812, now seen corresponding path program 1 times [2024-11-18 23:30:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269590057] [2024-11-18 23:30:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:30:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269590057] [2024-11-18 23:30:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269590057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053905840] [2024-11-18 23:30:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:49,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:49,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:49,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:30:49,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:30:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:49,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 23:30:49,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 20 proven. 60 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:30:51,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:30:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:30:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053905840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:30:56,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:30:56,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 40 [2024-11-18 23:30:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899311863] [2024-11-18 23:30:56,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:30:56,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-18 23:30:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-18 23:30:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1288, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 23:30:56,003 INFO L87 Difference]: Start difference. First operand 622 states and 844 transitions. Second operand has 40 states, 40 states have (on average 4.2) internal successors, (168), 40 states have internal predecessors, (168), 5 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 3 states have call predecessors, (63), 5 states have call successors, (63) [2024-11-18 23:30:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:59,487 INFO L93 Difference]: Finished difference Result 2114 states and 2858 transitions. [2024-11-18 23:30:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 23:30:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.2) internal successors, (168), 40 states have internal predecessors, (168), 5 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 3 states have call predecessors, (63), 5 states have call successors, (63) Word has length 159 [2024-11-18 23:30:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:59,493 INFO L225 Difference]: With dead ends: 2114 [2024-11-18 23:30:59,494 INFO L226 Difference]: Without dead ends: 1643 [2024-11-18 23:30:59,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=578, Invalid=2502, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 23:30:59,497 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 754 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:59,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1563 Invalid, 3236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 23:30:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2024-11-18 23:30:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1284. [2024-11-18 23:30:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1179 states have (on average 1.3282442748091603) internal successors, (1566), 1179 states have internal predecessors, (1566), 84 states have call successors, (84), 20 states have call predecessors, (84), 20 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 23:30:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1734 transitions. [2024-11-18 23:30:59,575 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1734 transitions. Word has length 159 [2024-11-18 23:30:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:59,576 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1734 transitions. [2024-11-18 23:30:59,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.2) internal successors, (168), 40 states have internal predecessors, (168), 5 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 3 states have call predecessors, (63), 5 states have call successors, (63) [2024-11-18 23:30:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1734 transitions. [2024-11-18 23:30:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 23:30:59,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:59,578 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:59,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 23:30:59,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 23:30:59,779 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:59,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash 480573544, now seen corresponding path program 1 times [2024-11-18 23:30:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530810821] [2024-11-18 23:30:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:31:03,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530810821] [2024-11-18 23:31:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530810821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94753776] [2024-11-18 23:31:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:03,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:31:03,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:31:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:03,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 23:31:03,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:31:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 136 proven. 159 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2024-11-18 23:31:04,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:31:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94753776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:04,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:31:04,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 23 [2024-11-18 23:31:04,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38233853] [2024-11-18 23:31:04,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:31:04,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 23:31:04,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 23:31:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-18 23:31:04,742 INFO L87 Difference]: Start difference. First operand 1284 states and 1734 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 22 states have internal predecessors, (117), 4 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2024-11-18 23:31:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:07,634 INFO L93 Difference]: Finished difference Result 2728 states and 3669 transitions. [2024-11-18 23:31:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-18 23:31:07,635 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 22 states have internal predecessors, (117), 4 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 159 [2024-11-18 23:31:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:07,641 INFO L225 Difference]: With dead ends: 2728 [2024-11-18 23:31:07,642 INFO L226 Difference]: Without dead ends: 1447 [2024-11-18 23:31:07,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=500, Invalid=2692, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 23:31:07,646 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 958 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:07,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 911 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 23:31:07,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-11-18 23:31:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 946. [2024-11-18 23:31:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 867 states have (on average 1.342560553633218) internal successors, (1164), 867 states have internal predecessors, (1164), 63 states have call successors, (63), 15 states have call predecessors, (63), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 23:31:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1290 transitions. [2024-11-18 23:31:07,727 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1290 transitions. Word has length 159 [2024-11-18 23:31:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:07,728 INFO L471 AbstractCegarLoop]: Abstraction has 946 states and 1290 transitions. [2024-11-18 23:31:07,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 22 states have internal predecessors, (117), 4 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2024-11-18 23:31:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1290 transitions. [2024-11-18 23:31:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 23:31:07,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:07,731 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:07,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 23:31:07,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 23:31:07,933 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:07,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 880210375, now seen corresponding path program 1 times [2024-11-18 23:31:07,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:07,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621068640] [2024-11-18 23:31:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:07,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 23:31:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621068640] [2024-11-18 23:31:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621068640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803853680] [2024-11-18 23:31:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:10,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:10,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:10,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:31:10,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 23:31:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:10,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 23:31:10,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:31:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 567 proven. 159 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-18 23:31:15,721 INFO L311 TraceCheckSpWp]: Computing backward predicates...