./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c554204f9340f445d5caf6fceb919bd7ca7d94cde437779a40eaa60e7857908 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 08:40:10,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 08:40:10,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 08:40:10,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 08:40:10,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 08:40:10,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 08:40:10,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 08:40:10,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 08:40:10,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 08:40:10,882 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 08:40:10,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 08:40:10,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 08:40:10,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 08:40:10,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 08:40:10,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 08:40:10,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 08:40:10,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 08:40:10,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 08:40:10,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 08:40:10,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 08:40:10,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 08:40:10,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 08:40:10,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 08:40:10,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 08:40:10,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 08:40:10,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 08:40:10,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 08:40:10,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 08:40:10,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 08:40:10,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 08:40:10,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 08:40:10,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 08:40:10,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:40:10,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 08:40:10,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 08:40:10,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 08:40:10,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 08:40:10,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 08:40:10,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 08:40:10,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 08:40:10,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 08:40:10,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 08:40:10,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c554204f9340f445d5caf6fceb919bd7ca7d94cde437779a40eaa60e7857908 [2024-11-22 08:40:11,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 08:40:11,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 08:40:11,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 08:40:11,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 08:40:11,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 08:40:11,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2024-11-22 08:40:12,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 08:40:12,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 08:40:12,752 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2024-11-22 08:40:12,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59647fff0/fba6827a66d34666ad885056e59fbb7d/FLAGd4ad07877 [2024-11-22 08:40:13,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59647fff0/fba6827a66d34666ad885056e59fbb7d [2024-11-22 08:40:13,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 08:40:13,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 08:40:13,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 08:40:13,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 08:40:13,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 08:40:13,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6128de88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13, skipping insertion in model container [2024-11-22 08:40:13,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 08:40:13,329 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i[919,932] [2024-11-22 08:40:13,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:40:13,420 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 08:40:13,437 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i[919,932] [2024-11-22 08:40:13,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:40:13,504 INFO L204 MainTranslator]: Completed translation [2024-11-22 08:40:13,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13 WrapperNode [2024-11-22 08:40:13,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 08:40:13,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 08:40:13,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 08:40:13,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 08:40:13,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,572 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-11-22 08:40:13,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 08:40:13,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 08:40:13,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 08:40:13,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 08:40:13,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,615 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 08:40:13,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 08:40:13,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 08:40:13,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 08:40:13,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 08:40:13,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (1/1) ... [2024-11-22 08:40:13,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:40:13,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:40:13,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 08:40:13,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 08:40:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 08:40:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 08:40:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 08:40:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 08:40:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 08:40:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 08:40:13,822 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 08:40:13,824 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 08:40:14,330 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-22 08:40:14,330 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 08:40:14,347 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 08:40:14,348 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 08:40:14,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:40:14 BoogieIcfgContainer [2024-11-22 08:40:14,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 08:40:14,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 08:40:14,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 08:40:14,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 08:40:14,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:40:13" (1/3) ... [2024-11-22 08:40:14,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5329560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:40:14, skipping insertion in model container [2024-11-22 08:40:14,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:40:13" (2/3) ... [2024-11-22 08:40:14,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5329560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:40:14, skipping insertion in model container [2024-11-22 08:40:14,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:40:14" (3/3) ... [2024-11-22 08:40:14,354 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2024-11-22 08:40:14,369 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 08:40:14,370 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 08:40:14,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 08:40:14,461 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;@20f12e9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 08:40:14,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 08:40:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 61 states have internal predecessors, (91), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 08:40:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-22 08:40:14,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:14,476 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:14,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:14,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:14,482 INFO L85 PathProgramCache]: Analyzing trace with hash -49966647, now seen corresponding path program 1 times [2024-11-22 08:40:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:14,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642538648] [2024-11-22 08:40:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-22 08:40:14,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642538648] [2024-11-22 08:40:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642538648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:40:14,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752869223] [2024-11-22 08:40:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:14,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:40:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:40:14,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 08:40:14,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 08:40:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:14,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 08:40:14,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:40:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-22 08:40:14,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 08:40:14,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752869223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:40:14,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:40:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 08:40:14,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016242741] [2024-11-22 08:40:14,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:40:14,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 08:40:14,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:14,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 08:40:14,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:40:14,987 INFO L87 Difference]: Start difference. First operand has 83 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 61 states have internal predecessors, (91), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-22 08:40:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:15,017 INFO L93 Difference]: Finished difference Result 159 states and 276 transitions. [2024-11-22 08:40:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 08:40:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 138 [2024-11-22 08:40:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:15,029 INFO L225 Difference]: With dead ends: 159 [2024-11-22 08:40:15,029 INFO L226 Difference]: Without dead ends: 79 [2024-11-22 08:40:15,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:40:15,039 INFO L432 NwaCegarLoop]: 121 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, 121 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:15,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:40:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-22 08:40:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-22 08:40:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 states have internal predecessors, (81), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 08:40:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 121 transitions. [2024-11-22 08:40:15,084 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 121 transitions. Word has length 138 [2024-11-22 08:40:15,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:15,086 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 121 transitions. [2024-11-22 08:40:15,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-22 08:40:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 121 transitions. [2024-11-22 08:40:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-22 08:40:15,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:15,089 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:15,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 08:40:15,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 08:40:15,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:15,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1232842543, now seen corresponding path program 1 times [2024-11-22 08:40:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67001763] [2024-11-22 08:40:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 08:40:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67001763] [2024-11-22 08:40:15,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67001763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:40:15,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:40:15,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:40:15,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129775049] [2024-11-22 08:40:15,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:40:15,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:40:15,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:40:15,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:40:15,690 INFO L87 Difference]: Start difference. First operand 79 states and 121 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:15,777 INFO L93 Difference]: Finished difference Result 155 states and 239 transitions. [2024-11-22 08:40:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:40:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 138 [2024-11-22 08:40:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:15,782 INFO L225 Difference]: With dead ends: 155 [2024-11-22 08:40:15,782 INFO L226 Difference]: Without dead ends: 79 [2024-11-22 08:40:15,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:40:15,783 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:15,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:40:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-22 08:40:15,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-22 08:40:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 57 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 08:40:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 120 transitions. [2024-11-22 08:40:15,801 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 120 transitions. Word has length 138 [2024-11-22 08:40:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:15,802 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 120 transitions. [2024-11-22 08:40:15,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 120 transitions. [2024-11-22 08:40:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-22 08:40:15,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:15,806 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:15,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 08:40:15,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:15,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash -552784173, now seen corresponding path program 1 times [2024-11-22 08:40:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:15,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331888367] [2024-11-22 08:40:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 08:40:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331888367] [2024-11-22 08:40:16,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331888367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:40:16,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:40:16,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:40:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945839422] [2024-11-22 08:40:16,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:40:16,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:40:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:40:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:40:16,164 INFO L87 Difference]: Start difference. First operand 79 states and 120 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:16,297 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2024-11-22 08:40:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:40:16,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 138 [2024-11-22 08:40:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:16,300 INFO L225 Difference]: With dead ends: 232 [2024-11-22 08:40:16,300 INFO L226 Difference]: Without dead ends: 156 [2024-11-22 08:40:16,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:40:16,304 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 107 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:16,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 344 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:40:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-22 08:40:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 117. [2024-11-22 08:40:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 08:40:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 177 transitions. [2024-11-22 08:40:16,331 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 177 transitions. Word has length 138 [2024-11-22 08:40:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:16,334 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 177 transitions. [2024-11-22 08:40:16,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 177 transitions. [2024-11-22 08:40:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 08:40:16,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:16,338 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:16,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 08:40:16,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:16,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1165230544, now seen corresponding path program 1 times [2024-11-22 08:40:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:16,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475736034] [2024-11-22 08:40:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:16,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 08:40:16,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:16,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475736034] [2024-11-22 08:40:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475736034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:40:16,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:40:16,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 08:40:16,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595098763] [2024-11-22 08:40:16,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:40:16,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 08:40:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:16,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 08:40:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 08:40:16,868 INFO L87 Difference]: Start difference. First operand 117 states and 177 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-22 08:40:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:17,728 INFO L93 Difference]: Finished difference Result 405 states and 600 transitions. [2024-11-22 08:40:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 08:40:17,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2024-11-22 08:40:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:17,731 INFO L225 Difference]: With dead ends: 405 [2024-11-22 08:40:17,731 INFO L226 Difference]: Without dead ends: 329 [2024-11-22 08:40:17,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-22 08:40:17,733 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 484 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:17,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 606 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 08:40:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-22 08:40:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 193. [2024-11-22 08:40:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 08:40:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 293 transitions. [2024-11-22 08:40:17,769 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 293 transitions. Word has length 139 [2024-11-22 08:40:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:17,770 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 293 transitions. [2024-11-22 08:40:17,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-22 08:40:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 293 transitions. [2024-11-22 08:40:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 08:40:17,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:17,772 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:17,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 08:40:17,773 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:17,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:17,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1381184424, now seen corresponding path program 1 times [2024-11-22 08:40:17,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286390128] [2024-11-22 08:40:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:17,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 08:40:18,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:18,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286390128] [2024-11-22 08:40:18,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286390128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:40:18,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:40:18,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 08:40:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241853289] [2024-11-22 08:40:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:40:18,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 08:40:18,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 08:40:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 08:40:18,185 INFO L87 Difference]: Start difference. First operand 193 states and 293 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:18,491 INFO L93 Difference]: Finished difference Result 437 states and 658 transitions. [2024-11-22 08:40:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 08:40:18,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2024-11-22 08:40:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:18,497 INFO L225 Difference]: With dead ends: 437 [2024-11-22 08:40:18,498 INFO L226 Difference]: Without dead ends: 285 [2024-11-22 08:40:18,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-22 08:40:18,501 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 119 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:18,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 456 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:40:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-22 08:40:18,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 230. [2024-11-22 08:40:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 165 states have (on average 1.406060606060606) internal successors, (232), 165 states have internal predecessors, (232), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 08:40:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 352 transitions. [2024-11-22 08:40:18,535 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 352 transitions. Word has length 140 [2024-11-22 08:40:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:18,536 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 352 transitions. [2024-11-22 08:40:18,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:18,536 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 352 transitions. [2024-11-22 08:40:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 08:40:18,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:18,538 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:18,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 08:40:18,539 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:18,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash -424253910, now seen corresponding path program 1 times [2024-11-22 08:40:18,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:18,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220269947] [2024-11-22 08:40:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-22 08:40:18,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220269947] [2024-11-22 08:40:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220269947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:40:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306512773] [2024-11-22 08:40:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:18,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:40:18,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:40:18,820 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) [2024-11-22 08:40:18,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 08:40:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:18,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 08:40:18,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:40:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 217 proven. 48 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-22 08:40:19,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:40:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-22 08:40:19,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306512773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:40:19,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:40:19,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 08:40:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419903710] [2024-11-22 08:40:19,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:40:19,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 08:40:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 08:40:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 08:40:19,335 INFO L87 Difference]: Start difference. First operand 230 states and 352 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2024-11-22 08:40:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:19,598 INFO L93 Difference]: Finished difference Result 414 states and 621 transitions. [2024-11-22 08:40:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 08:40:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 140 [2024-11-22 08:40:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:19,602 INFO L225 Difference]: With dead ends: 414 [2024-11-22 08:40:19,604 INFO L226 Difference]: Without dead ends: 243 [2024-11-22 08:40:19,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-22 08:40:19,606 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 145 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:19,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 188 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:40:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-22 08:40:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2024-11-22 08:40:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 137 states have (on average 1.2481751824817517) internal successors, (171), 137 states have internal predecessors, (171), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 08:40:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 291 transitions. [2024-11-22 08:40:19,636 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 291 transitions. Word has length 140 [2024-11-22 08:40:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:19,637 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 291 transitions. [2024-11-22 08:40:19,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2024-11-22 08:40:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 291 transitions. [2024-11-22 08:40:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 08:40:19,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:19,640 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:19,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 08:40:19,840 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 [2024-11-22 08:40:19,841 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:19,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:19,842 INFO L85 PathProgramCache]: Analyzing trace with hash 47854645, now seen corresponding path program 1 times [2024-11-22 08:40:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:19,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583363934] [2024-11-22 08:40:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:19,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 08:40:19,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:19,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583363934] [2024-11-22 08:40:19,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583363934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:40:19,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:40:19,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:40:19,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315758749] [2024-11-22 08:40:19,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:40:19,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:40:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:40:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:40:19,929 INFO L87 Difference]: Start difference. First operand 205 states and 291 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:19,967 INFO L93 Difference]: Finished difference Result 438 states and 621 transitions. [2024-11-22 08:40:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:40:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-22 08:40:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:19,970 INFO L225 Difference]: With dead ends: 438 [2024-11-22 08:40:19,970 INFO L226 Difference]: Without dead ends: 282 [2024-11-22 08:40:19,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:40:19,972 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:19,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 205 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:40:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-22 08:40:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 229. [2024-11-22 08:40:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 161 states have (on average 1.2173913043478262) internal successors, (196), 161 states have internal predecessors, (196), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 08:40:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-11-22 08:40:19,996 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 145 [2024-11-22 08:40:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:19,996 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-11-22 08:40:19,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 08:40:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-11-22 08:40:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 08:40:19,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:19,997 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:19,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 08:40:19,998 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:19,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1822862007, now seen corresponding path program 1 times [2024-11-22 08:40:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:19,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384838429] [2024-11-22 08:40:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 08:40:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97952658] [2024-11-22 08:40:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:20,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:40:20,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:40:20,088 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) [2024-11-22 08:40:20,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 08:40:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:20,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 08:40:20,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:40:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 159 proven. 51 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-22 08:40:20,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:40:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-22 08:40:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:40:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384838429] [2024-11-22 08:40:20,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 08:40:20,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97952658] [2024-11-22 08:40:20,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97952658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:40:20,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 08:40:20,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2024-11-22 08:40:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316595765] [2024-11-22 08:40:20,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 08:40:20,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 08:40:20,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:40:20,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 08:40:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-22 08:40:20,716 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-22 08:40:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:40:21,341 INFO L93 Difference]: Finished difference Result 437 states and 596 transitions. [2024-11-22 08:40:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 08:40:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 145 [2024-11-22 08:40:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:40:21,343 INFO L225 Difference]: With dead ends: 437 [2024-11-22 08:40:21,343 INFO L226 Difference]: Without dead ends: 249 [2024-11-22 08:40:21,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:40:21,348 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 105 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 08:40:21,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 387 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 08:40:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-22 08:40:21,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 237. [2024-11-22 08:40:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 167 states have (on average 1.1976047904191616) internal successors, (200), 167 states have internal predecessors, (200), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 08:40:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 320 transitions. [2024-11-22 08:40:21,383 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 320 transitions. Word has length 145 [2024-11-22 08:40:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:40:21,384 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 320 transitions. [2024-11-22 08:40:21,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-22 08:40:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 320 transitions. [2024-11-22 08:40:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 08:40:21,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:40:21,385 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:40:21,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 08:40:21,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:40:21,590 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:40:21,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:40:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1848242774, now seen corresponding path program 1 times [2024-11-22 08:40:21,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:40:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565858049] [2024-11-22 08:40:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:40:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 08:40:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983485259] [2024-11-22 08:40:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:40:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:40:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:40:21,699 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) [2024-11-22 08:40:21,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 08:40:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:40:21,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 08:40:21,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:40:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 199 proven. 135 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2024-11-22 08:40:22,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:40:34,256 WARN L286 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 08:41:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:41:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565858049] [2024-11-22 08:41:03,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 08:41:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983485259] [2024-11-22 08:41:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983485259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:41:03,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:41:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-22 08:41:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628294707] [2024-11-22 08:41:03,249 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 08:41:03,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 08:41:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:41:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 08:41:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2024-11-22 08:41:03,251 INFO L87 Difference]: Start difference. First operand 237 states and 320 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-22 08:41:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:41:04,025 INFO L93 Difference]: Finished difference Result 443 states and 589 transitions. [2024-11-22 08:41:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 08:41:04,026 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 146 [2024-11-22 08:41:04,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:41:04,028 INFO L225 Difference]: With dead ends: 443 [2024-11-22 08:41:04,028 INFO L226 Difference]: Without dead ends: 255 [2024-11-22 08:41:04,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2024-11-22 08:41:04,033 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 08:41:04,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 564 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 08:41:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-22 08:41:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2024-11-22 08:41:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 173 states have (on average 1.1849710982658959) internal successors, (205), 173 states have internal predecessors, (205), 60 states have call successors, (60), 11 states have call predecessors, (60), 11 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 08:41:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 325 transitions. [2024-11-22 08:41:04,054 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 325 transitions. Word has length 146 [2024-11-22 08:41:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:41:04,055 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 325 transitions. [2024-11-22 08:41:04,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-22 08:41:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 325 transitions. [2024-11-22 08:41:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 08:41:04,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:41:04,058 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:41:04,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 08:41:04,258 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 [2024-11-22 08:41:04,259 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:41:04,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:41:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1017226582, now seen corresponding path program 1 times [2024-11-22 08:41:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:41:04,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722170151] [2024-11-22 08:41:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:41:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:41:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:41:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-22 08:41:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:41:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722170151] [2024-11-22 08:41:04,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722170151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:41:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355808290] [2024-11-22 08:41:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:41:04,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:41:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:41:04,569 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) [2024-11-22 08:41:04,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 08:41:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:41:04,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 08:41:04,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:41:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 379 proven. 21 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-22 08:41:04,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:41:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-22 08:41:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355808290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:41:04,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:41:04,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-22 08:41:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776671476] [2024-11-22 08:41:04,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:41:04,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 08:41:04,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:41:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 08:41:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 08:41:04,916 INFO L87 Difference]: Start difference. First operand 245 states and 325 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 08:41:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:41:05,423 INFO L93 Difference]: Finished difference Result 702 states and 905 transitions. [2024-11-22 08:41:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 08:41:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 146 [2024-11-22 08:41:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:41:05,426 INFO L225 Difference]: With dead ends: 702 [2024-11-22 08:41:05,426 INFO L226 Difference]: Without dead ends: 510 [2024-11-22 08:41:05,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-22 08:41:05,427 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 431 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 08:41:05,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 332 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 08:41:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-22 08:41:05,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 395. [2024-11-22 08:41:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 288 states have (on average 1.1770833333333333) internal successors, (339), 290 states have internal predecessors, (339), 84 states have call successors, (84), 22 states have call predecessors, (84), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-22 08:41:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2024-11-22 08:41:05,455 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 146 [2024-11-22 08:41:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:41:05,456 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2024-11-22 08:41:05,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 08:41:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2024-11-22 08:41:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 08:41:05,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:41:05,457 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:41:05,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 08:41:05,658 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 [2024-11-22 08:41:05,658 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:41:05,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:41:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash -507753492, now seen corresponding path program 1 times [2024-11-22 08:41:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:41:05,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781392596] [2024-11-22 08:41:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:41:05,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:41:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 08:41:05,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468324905] [2024-11-22 08:41:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:41:05,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:41:05,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:41:05,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 08:41:05,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 08:41:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:41:05,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-22 08:41:05,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:41:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 247 proven. 195 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-22 08:41:07,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:41:24,013 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)