./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.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_amount250_file-29.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 e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:41:56,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:41:56,375 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:41:56,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:41:56,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:41:56,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:41:56,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:41:56,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:41:56,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:41:56,409 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:41:56,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:41:56,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:41:56,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:41:56,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:41:56,412 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:41:56,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:41:56,412 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:41:56,413 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:41:56,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:41:56,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:41:56,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:41:56,414 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:41:56,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:41:56,415 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:41:56,415 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:41:56,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:41:56,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:41:56,416 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:41:56,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:41:56,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:41:56,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:41:56,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:41:56,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:41:56,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:41:56,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:41:56,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:41:56,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:41:56,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:41:56,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:41:56,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:41:56,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:41:56,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:41:56,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b [2024-11-18 23:41:56,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:41:56,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:41:56,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:41:56,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:41:56,703 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:41:56,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2024-11-18 23:41:58,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:41:58,384 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:41:58,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2024-11-18 23:41:58,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a203fb4c/5636d75bd0d24b5f844599c5777634c3/FLAGb41415c07 [2024-11-18 23:41:58,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a203fb4c/5636d75bd0d24b5f844599c5777634c3 [2024-11-18 23:41:58,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:41:58,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:41:58,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:41:58,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:41:58,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:41:58,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:58" (1/1) ... [2024-11-18 23:41:58,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448fc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:58, skipping insertion in model container [2024-11-18 23:41:58,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:58" (1/1) ... [2024-11-18 23:41:58,758 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:41:58,943 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_amount250_file-29.i[916,929] [2024-11-18 23:41:59,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:41:59,089 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:41:59,104 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_amount250_file-29.i[916,929] [2024-11-18 23:41:59,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:41:59,234 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:41:59,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59 WrapperNode [2024-11-18 23:41:59,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:41:59,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:41:59,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:41:59,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:41:59,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,312 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 419 [2024-11-18 23:41:59,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:41:59,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:41:59,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:41:59,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:41:59,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,382 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 23:41:59,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:41:59,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:41:59,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:41:59,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:41:59,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (1/1) ... [2024-11-18 23:41:59,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:41:59,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:59,471 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 23:41:59,475 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 23:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:41:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:41:59,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:41:59,656 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:41:59,659 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:42:00,451 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-18 23:42:00,451 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:42:00,469 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:42:00,471 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:42:00,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:42:00 BoogieIcfgContainer [2024-11-18 23:42:00,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:42:00,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:42:00,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:42:00,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:42:00,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:41:58" (1/3) ... [2024-11-18 23:42:00,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16158740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:42:00, skipping insertion in model container [2024-11-18 23:42:00,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:59" (2/3) ... [2024-11-18 23:42:00,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16158740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:42:00, skipping insertion in model container [2024-11-18 23:42:00,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:42:00" (3/3) ... [2024-11-18 23:42:00,481 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-29.i [2024-11-18 23:42:00,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:42:00,498 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:42:00,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:42:00,581 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;@6f92a714, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:42:00,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:42:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 121 states have (on average 1.4710743801652892) internal successors, (178), 122 states have internal predecessors, (178), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-18 23:42:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 23:42:00,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:00,615 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:00,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:00,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -678896626, now seen corresponding path program 1 times [2024-11-18 23:42:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:00,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127071592] [2024-11-18 23:42:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2024-11-18 23:42:01,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:01,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127071592] [2024-11-18 23:42:01,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127071592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330153066] [2024-11-18 23:42:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:01,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:01,237 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 23:42:01,239 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 23:42:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:01,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:42:01,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2024-11-18 23:42:01,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:42:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330153066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:42:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:42:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098482212] [2024-11-18 23:42:01,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:01,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:42:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:42:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:42:01,699 INFO L87 Difference]: Start difference. First operand has 179 states, 121 states have (on average 1.4710743801652892) internal successors, (178), 122 states have internal predecessors, (178), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-18 23:42:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:01,752 INFO L93 Difference]: Finished difference Result 351 states and 625 transitions. [2024-11-18 23:42:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:42:01,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2024-11-18 23:42:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:01,763 INFO L225 Difference]: With dead ends: 351 [2024-11-18 23:42:01,763 INFO L226 Difference]: Without dead ends: 175 [2024-11-18 23:42:01,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 361 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 23:42:01,771 INFO L432 NwaCegarLoop]: 281 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, 281 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 23:42:01,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:42:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-18 23:42:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-18 23:42:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.4491525423728813) internal successors, (171), 118 states have internal predecessors, (171), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-18 23:42:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 281 transitions. [2024-11-18 23:42:01,845 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 281 transitions. Word has length 360 [2024-11-18 23:42:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:01,846 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 281 transitions. [2024-11-18 23:42:01,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-18 23:42:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 281 transitions. [2024-11-18 23:42:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 23:42:01,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:01,856 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:01,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 23:42:02,057 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 23:42:02,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:02,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash 239052956, now seen corresponding path program 1 times [2024-11-18 23:42:02,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:02,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429758348] [2024-11-18 23:42:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:42:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429758348] [2024-11-18 23:42:02,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429758348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:02,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:02,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:42:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994720889] [2024-11-18 23:42:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:02,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:42:02,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:02,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:42:02,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:02,419 INFO L87 Difference]: Start difference. First operand 175 states and 281 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:02,514 INFO L93 Difference]: Finished difference Result 422 states and 675 transitions. [2024-11-18 23:42:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:42:02,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2024-11-18 23:42:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:02,523 INFO L225 Difference]: With dead ends: 422 [2024-11-18 23:42:02,523 INFO L226 Difference]: Without dead ends: 250 [2024-11-18 23:42:02,524 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 23:42:02,527 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 103 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:02,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 627 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:42:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-18 23:42:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2024-11-18 23:42:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 187 states have (on average 1.4973262032085561) internal successors, (280), 188 states have internal predecessors, (280), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-18 23:42:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 394 transitions. [2024-11-18 23:42:02,572 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 394 transitions. Word has length 360 [2024-11-18 23:42:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:02,576 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 394 transitions. [2024-11-18 23:42:02,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 394 transitions. [2024-11-18 23:42:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 23:42:02,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:02,585 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:02,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:42:02,585 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:02,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 662699678, now seen corresponding path program 1 times [2024-11-18 23:42:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967012514] [2024-11-18 23:42:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:42:03,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967012514] [2024-11-18 23:42:03,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967012514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:03,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:03,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:42:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571897526] [2024-11-18 23:42:03,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:03,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:42:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:03,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:42:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:42:03,120 INFO L87 Difference]: Start difference. First operand 247 states and 394 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:03,212 INFO L93 Difference]: Finished difference Result 735 states and 1176 transitions. [2024-11-18 23:42:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:42:03,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2024-11-18 23:42:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:03,223 INFO L225 Difference]: With dead ends: 735 [2024-11-18 23:42:03,223 INFO L226 Difference]: Without dead ends: 491 [2024-11-18 23:42:03,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:42:03,226 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 175 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:03,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 812 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:42:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-18 23:42:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2024-11-18 23:42:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 370 states have (on average 1.4972972972972973) internal successors, (554), 372 states have internal predecessors, (554), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2024-11-18 23:42:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 782 transitions. [2024-11-18 23:42:03,305 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 782 transitions. Word has length 360 [2024-11-18 23:42:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:03,307 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 782 transitions. [2024-11-18 23:42:03,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 782 transitions. [2024-11-18 23:42:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 23:42:03,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:03,313 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:03,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:42:03,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:03,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -181305824, now seen corresponding path program 1 times [2024-11-18 23:42:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940679462] [2024-11-18 23:42:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:42:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940679462] [2024-11-18 23:42:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940679462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:42:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759475173] [2024-11-18 23:42:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:03,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:42:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:42:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:42:03,907 INFO L87 Difference]: Start difference. First operand 489 states and 782 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-18 23:42:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:04,411 INFO L93 Difference]: Finished difference Result 1465 states and 2348 transitions. [2024-11-18 23:42:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:42:04,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2024-11-18 23:42:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:04,422 INFO L225 Difference]: With dead ends: 1465 [2024-11-18 23:42:04,423 INFO L226 Difference]: Without dead ends: 979 [2024-11-18 23:42:04,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:42:04,425 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 285 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:04,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 900 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:42:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2024-11-18 23:42:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2024-11-18 23:42:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 740 states have (on average 1.4972972972972973) internal successors, (1108), 744 states have internal predecessors, (1108), 228 states have call successors, (228), 8 states have call predecessors, (228), 8 states have return successors, (228), 224 states have call predecessors, (228), 228 states have call successors, (228) [2024-11-18 23:42:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1564 transitions. [2024-11-18 23:42:04,589 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1564 transitions. Word has length 360 [2024-11-18 23:42:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:04,592 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1564 transitions. [2024-11-18 23:42:04,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-18 23:42:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1564 transitions. [2024-11-18 23:42:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 23:42:04,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:04,601 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:04,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:42:04,602 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:04,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -40757214, now seen corresponding path program 1 times [2024-11-18 23:42:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700139249] [2024-11-18 23:42:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:42:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700139249] [2024-11-18 23:42:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700139249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:05,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:05,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:42:05,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600850674] [2024-11-18 23:42:05,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:05,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:42:05,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:42:05,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:42:05,898 INFO L87 Difference]: Start difference. First operand 977 states and 1564 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:07,035 INFO L93 Difference]: Finished difference Result 3739 states and 5971 transitions. [2024-11-18 23:42:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:42:07,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2024-11-18 23:42:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:07,053 INFO L225 Difference]: With dead ends: 3739 [2024-11-18 23:42:07,053 INFO L226 Difference]: Without dead ends: 2765 [2024-11-18 23:42:07,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:42:07,058 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 324 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:07,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 833 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:42:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2024-11-18 23:42:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2277. [2024-11-18 23:42:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1804 states have (on average 1.5144124168514412) internal successors, (2732), 1812 states have internal predecessors, (2732), 456 states have call successors, (456), 16 states have call predecessors, (456), 16 states have return successors, (456), 448 states have call predecessors, (456), 456 states have call successors, (456) [2024-11-18 23:42:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3644 transitions. [2024-11-18 23:42:07,376 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3644 transitions. Word has length 360 [2024-11-18 23:42:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:07,377 INFO L471 AbstractCegarLoop]: Abstraction has 2277 states and 3644 transitions. [2024-11-18 23:42:07,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3644 transitions. [2024-11-18 23:42:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 23:42:07,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:07,387 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:07,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:42:07,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:07,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -18124960, now seen corresponding path program 1 times [2024-11-18 23:42:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914823985] [2024-11-18 23:42:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:42:09,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914823985] [2024-11-18 23:42:09,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914823985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:09,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927432006] [2024-11-18 23:42:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:09,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:09,032 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 23:42:09,034 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 23:42:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:09,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 23:42:09,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2738 proven. 102 refuted. 0 times theorem prover too weak. 3100 trivial. 0 not checked. [2024-11-18 23:42:10,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:42:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927432006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:11,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 21 [2024-11-18 23:42:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735840461] [2024-11-18 23:42:11,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:11,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:42:11,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:42:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:42:11,267 INFO L87 Difference]: Start difference. First operand 2277 states and 3644 transitions. Second operand has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) [2024-11-18 23:42:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:13,355 INFO L93 Difference]: Finished difference Result 6479 states and 10279 transitions. [2024-11-18 23:42:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 23:42:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) Word has length 360 [2024-11-18 23:42:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:13,379 INFO L225 Difference]: With dead ends: 6479 [2024-11-18 23:42:13,380 INFO L226 Difference]: Without dead ends: 4205 [2024-11-18 23:42:13,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2024-11-18 23:42:13,389 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 583 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:13,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1797 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 23:42:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2024-11-18 23:42:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4165. [2024-11-18 23:42:13,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 3280 states have (on average 1.4829268292682927) internal successors, (4864), 3300 states have internal predecessors, (4864), 836 states have call successors, (836), 48 states have call predecessors, (836), 48 states have return successors, (836), 816 states have call predecessors, (836), 836 states have call successors, (836) [2024-11-18 23:42:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 6536 transitions. [2024-11-18 23:42:13,770 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 6536 transitions. Word has length 360 [2024-11-18 23:42:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:13,772 INFO L471 AbstractCegarLoop]: Abstraction has 4165 states and 6536 transitions. [2024-11-18 23:42:13,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) [2024-11-18 23:42:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 6536 transitions. [2024-11-18 23:42:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-18 23:42:13,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:13,781 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:13,800 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 23:42:13,985 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,SelfDestructingSolverStorable5 [2024-11-18 23:42:13,986 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:13,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash 46318542, now seen corresponding path program 1 times [2024-11-18 23:42:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315533941] [2024-11-18 23:42:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 261 proven. 57 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2024-11-18 23:42:15,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315533941] [2024-11-18 23:42:15,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315533941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159249861] [2024-11-18 23:42:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:15,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:15,759 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 23:42:15,762 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 23:42:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:16,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 23:42:16,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3825 proven. 330 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2024-11-18 23:42:17,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 282 proven. 348 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2024-11-18 23:42:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159249861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:18,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 34 [2024-11-18 23:42:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859556357] [2024-11-18 23:42:18,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:18,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 23:42:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 23:42:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 23:42:18,458 INFO L87 Difference]: Start difference. First operand 4165 states and 6536 transitions. Second operand has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) [2024-11-18 23:42:22,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-18 23:42:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:36,132 INFO L93 Difference]: Finished difference Result 29047 states and 43731 transitions. [2024-11-18 23:42:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2024-11-18 23:42:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) Word has length 361 [2024-11-18 23:42:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:36,251 INFO L225 Difference]: With dead ends: 29047 [2024-11-18 23:42:36,251 INFO L226 Difference]: Without dead ends: 24885 [2024-11-18 23:42:36,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35800 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=13461, Invalid=68049, Unknown=0, NotChecked=0, Total=81510 [2024-11-18 23:42:36,290 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 8491 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 2805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8509 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2805 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:36,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8509 Valid, 2260 Invalid, 5828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2805 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-18 23:42:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24885 states. [2024-11-18 23:42:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24885 to 12621. [2024-11-18 23:42:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12621 states, 10688 states have (on average 1.4962574850299402) internal successors, (15992), 10772 states have internal predecessors, (15992), 1692 states have call successors, (1692), 240 states have call predecessors, (1692), 240 states have return successors, (1692), 1608 states have call predecessors, (1692), 1692 states have call successors, (1692) [2024-11-18 23:42:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12621 states to 12621 states and 19376 transitions. [2024-11-18 23:42:37,747 INFO L78 Accepts]: Start accepts. Automaton has 12621 states and 19376 transitions. Word has length 361 [2024-11-18 23:42:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:37,748 INFO L471 AbstractCegarLoop]: Abstraction has 12621 states and 19376 transitions. [2024-11-18 23:42:37,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) [2024-11-18 23:42:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12621 states and 19376 transitions. [2024-11-18 23:42:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-18 23:42:37,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:37,763 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:37,782 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 23:42:37,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:37,967 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:37,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1250740745, now seen corresponding path program 1 times [2024-11-18 23:42:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790954902] [2024-11-18 23:42:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:42:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790954902] [2024-11-18 23:42:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790954902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:42:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026323017] [2024-11-18 23:42:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:38,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:42:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:42:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:42:38,594 INFO L87 Difference]: Start difference. First operand 12621 states and 19376 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:40,088 INFO L93 Difference]: Finished difference Result 26717 states and 40943 transitions. [2024-11-18 23:42:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:42:40,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 362 [2024-11-18 23:42:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:40,237 INFO L225 Difference]: With dead ends: 26717 [2024-11-18 23:42:40,237 INFO L226 Difference]: Without dead ends: 14051 [2024-11-18 23:42:40,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:42:40,261 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 659 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:40,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1007 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:42:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14051 states. [2024-11-18 23:42:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14051 to 11514. [2024-11-18 23:42:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11514 states, 9641 states have (on average 1.481692770459496) internal successors, (14285), 9718 states have internal predecessors, (14285), 1636 states have call successors, (1636), 236 states have call predecessors, (1636), 236 states have return successors, (1636), 1559 states have call predecessors, (1636), 1636 states have call successors, (1636) [2024-11-18 23:42:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11514 states to 11514 states and 17557 transitions. [2024-11-18 23:42:41,217 INFO L78 Accepts]: Start accepts. Automaton has 11514 states and 17557 transitions. Word has length 362 [2024-11-18 23:42:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:41,218 INFO L471 AbstractCegarLoop]: Abstraction has 11514 states and 17557 transitions. [2024-11-18 23:42:41,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:42:41,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11514 states and 17557 transitions. [2024-11-18 23:42:41,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-18 23:42:41,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:41,232 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:41,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:42:41,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:41,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1062742920, now seen corresponding path program 1 times [2024-11-18 23:42:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:41,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057541331] [2024-11-18 23:42:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:42:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057541331] [2024-11-18 23:42:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057541331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13827857] [2024-11-18 23:42:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:42,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:42,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:42,320 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 23:42:42,321 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 23:42:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:42,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:42:42,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2032 proven. 33 refuted. 0 times theorem prover too weak. 3875 trivial. 0 not checked. [2024-11-18 23:42:42,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:42:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13827857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:43,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:43,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-18 23:42:43,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574587152] [2024-11-18 23:42:43,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:43,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:42:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:42:43,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:42:43,154 INFO L87 Difference]: Start difference. First operand 11514 states and 17557 transitions. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 4 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) [2024-11-18 23:42:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:48,694 INFO L93 Difference]: Finished difference Result 58996 states and 89656 transitions. [2024-11-18 23:42:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-18 23:42:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 4 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) Word has length 362 [2024-11-18 23:42:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:48,849 INFO L225 Difference]: With dead ends: 58996 [2024-11-18 23:42:48,849 INFO L226 Difference]: Without dead ends: 47510 [2024-11-18 23:42:48,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 724 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=947, Invalid=3475, Unknown=0, NotChecked=0, Total=4422 [2024-11-18 23:42:48,899 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 1835 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:48,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 3558 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 23:42:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47510 states. [2024-11-18 23:42:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47510 to 14909. [2024-11-18 23:42:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14909 states, 12530 states have (on average 1.476217079010375) internal successors, (18497), 12631 states have internal predecessors, (18497), 2055 states have call successors, (2055), 323 states have call predecessors, (2055), 323 states have return successors, (2055), 1954 states have call predecessors, (2055), 2055 states have call successors, (2055) [2024-11-18 23:42:50,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14909 states to 14909 states and 22607 transitions. [2024-11-18 23:42:50,505 INFO L78 Accepts]: Start accepts. Automaton has 14909 states and 22607 transitions. Word has length 362 [2024-11-18 23:42:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:50,506 INFO L471 AbstractCegarLoop]: Abstraction has 14909 states and 22607 transitions. [2024-11-18 23:42:50,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 4 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) [2024-11-18 23:42:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 14909 states and 22607 transitions. [2024-11-18 23:42:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-18 23:42:50,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:50,516 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:50,538 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 23:42:50,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:50,717 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:50,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1108205430, now seen corresponding path program 1 times [2024-11-18 23:42:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186562277] [2024-11-18 23:42:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:50,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 258 proven. 60 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2024-11-18 23:42:52,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:52,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186562277] [2024-11-18 23:42:52,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186562277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:52,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419018741] [2024-11-18 23:42:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:52,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:52,242 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 23:42:52,244 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 23:42:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:52,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 23:42:52,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2953 proven. 102 refuted. 0 times theorem prover too weak. 2885 trivial. 0 not checked. [2024-11-18 23:42:54,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:42:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419018741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:55,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 8] total 32 [2024-11-18 23:42:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561491993] [2024-11-18 23:42:55,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:55,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 23:42:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:55,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 23:42:55,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2024-11-18 23:42:55,127 INFO L87 Difference]: Start difference. First operand 14909 states and 22607 transitions. Second operand has 32 states, 32 states have (on average 8.4375) internal successors, (270), 30 states have internal predecessors, (270), 10 states have call successors, (165), 6 states have call predecessors, (165), 10 states have return successors, (165), 10 states have call predecessors, (165), 10 states have call successors, (165) [2024-11-18 23:43:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:02,508 INFO L93 Difference]: Finished difference Result 33024 states and 49863 transitions. [2024-11-18 23:43:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-18 23:43:02,510 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.4375) internal successors, (270), 30 states have internal predecessors, (270), 10 states have call successors, (165), 6 states have call predecessors, (165), 10 states have return successors, (165), 10 states have call predecessors, (165), 10 states have call successors, (165) Word has length 363 [2024-11-18 23:43:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:02,576 INFO L225 Difference]: With dead ends: 33024 [2024-11-18 23:43:02,577 INFO L226 Difference]: Without dead ends: 18235 [2024-11-18 23:43:02,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1355, Invalid=5451, Unknown=0, NotChecked=0, Total=6806 [2024-11-18 23:43:02,620 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 2329 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 1149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 5059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1149 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:02,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 3137 Invalid, 5059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1149 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-18 23:43:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18235 states. [2024-11-18 23:43:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18235 to 16382. [2024-11-18 23:43:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16382 states, 13884 states have (on average 1.480553154710458) internal successors, (20556), 13997 states have internal predecessors, (20556), 2147 states have call successors, (2147), 350 states have call predecessors, (2147), 350 states have return successors, (2147), 2034 states have call predecessors, (2147), 2147 states have call successors, (2147) [2024-11-18 23:43:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16382 states to 16382 states and 24850 transitions. [2024-11-18 23:43:04,230 INFO L78 Accepts]: Start accepts. Automaton has 16382 states and 24850 transitions. Word has length 363 [2024-11-18 23:43:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:04,231 INFO L471 AbstractCegarLoop]: Abstraction has 16382 states and 24850 transitions. [2024-11-18 23:43:04,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.4375) internal successors, (270), 30 states have internal predecessors, (270), 10 states have call successors, (165), 6 states have call predecessors, (165), 10 states have return successors, (165), 10 states have call predecessors, (165), 10 states have call successors, (165) [2024-11-18 23:43:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16382 states and 24850 transitions. [2024-11-18 23:43:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-18 23:43:04,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:04,240 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:04,260 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 23:43:04,441 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,SelfDestructingSolverStorable9 [2024-11-18 23:43:04,441 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:04,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2005653015, now seen corresponding path program 1 times [2024-11-18 23:43:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:04,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099540564] [2024-11-18 23:43:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:43:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099540564] [2024-11-18 23:43:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099540564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:04,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:04,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:43:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369340673] [2024-11-18 23:43:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:04,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:43:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:43:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:43:04,895 INFO L87 Difference]: Start difference. First operand 16382 states and 24850 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55)