./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.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_fillercodesize_ps-cn-250_file-44.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 cc3984a70cd12d1d8d9819c7a441be5e9fcf1734b23271ea13bfbb9a60a77e9c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:23:32,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:23:32,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:23:32,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:23:32,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:23:32,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:23:32,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:23:32,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:23:32,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:23:32,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:23:32,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:23:32,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:23:32,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:23:32,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:23:32,793 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:23:32,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:23:32,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:23:32,794 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:23:32,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:23:32,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:23:32,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:23:32,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:23:32,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:23:32,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:23:32,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:23:32,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:23:32,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:23:32,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:23:32,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:23:32,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:23:32,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:23:32,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:23:32,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:23:32,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:23:32,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:23:32,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:23:32,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:23:32,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:23:32,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:23:32,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:23:32,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:23:32,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:23:32,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc3984a70cd12d1d8d9819c7a441be5e9fcf1734b23271ea13bfbb9a60a77e9c [2024-11-22 07:23:33,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:23:33,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:23:33,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:23:33,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:23:33,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:23:33,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i [2024-11-22 07:23:34,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:23:34,791 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:23:34,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i [2024-11-22 07:23:34,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c3dc0a6/f180eec2d8a5468b985c9a5edce20f0d/FLAG408e5ec2c [2024-11-22 07:23:34,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c3dc0a6/f180eec2d8a5468b985c9a5edce20f0d [2024-11-22 07:23:34,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:23:34,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:23:34,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:23:34,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:23:34,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:23:34,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:23:34" (1/1) ... [2024-11-22 07:23:34,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f1688e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:34, skipping insertion in model container [2024-11-22 07:23:34,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:23:34" (1/1) ... [2024-11-22 07:23:34,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:23:35,051 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_fillercodesize_ps-cn-250_file-44.i[916,929] [2024-11-22 07:23:35,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:23:35,154 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:23:35,164 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_fillercodesize_ps-cn-250_file-44.i[916,929] [2024-11-22 07:23:35,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:23:35,234 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:23:35,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35 WrapperNode [2024-11-22 07:23:35,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:23:35,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:23:35,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:23:35,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:23:35,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,303 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 522 [2024-11-22 07:23:35,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:23:35,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:23:35,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:23:35,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:23:35,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,380 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 07:23:35,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:23:35,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:23:35,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:23:35,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:23:35,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (1/1) ... [2024-11-22 07:23:35,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:23:35,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:35,536 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 07:23:35,539 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 07:23:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:23:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:23:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:23:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:23:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:23:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:23:35,700 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:23:35,705 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:23:36,246 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-22 07:23:36,247 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:23:36,260 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:23:36,260 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:23:36,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:23:36 BoogieIcfgContainer [2024-11-22 07:23:36,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:23:36,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:23:36,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:23:36,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:23:36,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:23:34" (1/3) ... [2024-11-22 07:23:36,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f064e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:23:36, skipping insertion in model container [2024-11-22 07:23:36,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:23:35" (2/3) ... [2024-11-22 07:23:36,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f064e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:23:36, skipping insertion in model container [2024-11-22 07:23:36,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:23:36" (3/3) ... [2024-11-22 07:23:36,267 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-44.i [2024-11-22 07:23:36,280 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:23:36,280 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:23:36,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:23:36,337 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;@21f7f6d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:23:36,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:23:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 139 states have (on average 1.5179856115107915) internal successors, (211), 140 states have internal predecessors, (211), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-22 07:23:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-22 07:23:36,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:36,363 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:36,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:36,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:36,368 INFO L85 PathProgramCache]: Analyzing trace with hash 611313797, now seen corresponding path program 1 times [2024-11-22 07:23:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140909392] [2024-11-22 07:23:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:36,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2024-11-22 07:23:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140909392] [2024-11-22 07:23:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140909392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:37,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134881097] [2024-11-22 07:23:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:37,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:37,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:37,132 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 07:23:37,137 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 07:23:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:37,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:23:37,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2024-11-22 07:23:37,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:23:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134881097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:23:37,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:23:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485367829] [2024-11-22 07:23:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:37,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:23:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:23:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:23:37,561 INFO L87 Difference]: Start difference. First operand has 223 states, 139 states have (on average 1.5179856115107915) internal successors, (211), 140 states have internal predecessors, (211), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2024-11-22 07:23:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:37,638 INFO L93 Difference]: Finished difference Result 435 states and 813 transitions. [2024-11-22 07:23:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:23:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) Word has length 498 [2024-11-22 07:23:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:37,654 INFO L225 Difference]: With dead ends: 435 [2024-11-22 07:23:37,655 INFO L226 Difference]: Without dead ends: 215 [2024-11-22 07:23:37,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 499 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 07:23:37,669 INFO L432 NwaCegarLoop]: 356 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, 356 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 07:23:37,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:23:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-22 07:23:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-11-22 07:23:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 132 states have internal predecessors, (194), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-22 07:23:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 356 transitions. [2024-11-22 07:23:37,758 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 356 transitions. Word has length 498 [2024-11-22 07:23:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:37,761 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 356 transitions. [2024-11-22 07:23:37,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2024-11-22 07:23:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 356 transitions. [2024-11-22 07:23:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-22 07:23:37,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:37,779 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:37,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 07:23:37,983 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 07:23:37,984 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:37,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash -946321169, now seen corresponding path program 1 times [2024-11-22 07:23:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:37,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059421539] [2024-11-22 07:23:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059421539] [2024-11-22 07:23:38,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059421539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:38,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:38,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:23:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301175552] [2024-11-22 07:23:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:38,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:23:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:23:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:23:38,342 INFO L87 Difference]: Start difference. First operand 215 states and 356 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:38,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:38,422 INFO L93 Difference]: Finished difference Result 630 states and 1045 transitions. [2024-11-22 07:23:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:23:38,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 498 [2024-11-22 07:23:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:38,432 INFO L225 Difference]: With dead ends: 630 [2024-11-22 07:23:38,433 INFO L226 Difference]: Without dead ends: 418 [2024-11-22 07:23:38,434 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 07:23:38,435 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 340 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:38,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1010 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:23:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-22 07:23:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 415. [2024-11-22 07:23:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 250 states have (on average 1.452) internal successors, (363), 250 states have internal predecessors, (363), 162 states have call successors, (162), 2 states have call predecessors, (162), 2 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-22 07:23:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 687 transitions. [2024-11-22 07:23:38,517 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 687 transitions. Word has length 498 [2024-11-22 07:23:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:38,522 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 687 transitions. [2024-11-22 07:23:38,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 687 transitions. [2024-11-22 07:23:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-22 07:23:38,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:38,534 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:38,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:23:38,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:38,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash 226373371, now seen corresponding path program 1 times [2024-11-22 07:23:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679412136] [2024-11-22 07:23:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:38,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679412136] [2024-11-22 07:23:38,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679412136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:38,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:38,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:23:38,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498200807] [2024-11-22 07:23:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:38,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:23:38,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:23:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:23:38,807 INFO L87 Difference]: Start difference. First operand 415 states and 687 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:38,882 INFO L93 Difference]: Finished difference Result 1114 states and 1835 transitions. [2024-11-22 07:23:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:23:38,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-22 07:23:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:38,892 INFO L225 Difference]: With dead ends: 1114 [2024-11-22 07:23:38,893 INFO L226 Difference]: Without dead ends: 702 [2024-11-22 07:23:38,894 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 07:23:38,896 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 242 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:38,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 843 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:23:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-22 07:23:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2024-11-22 07:23:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 421 states have (on average 1.4275534441805227) internal successors, (601), 423 states have internal predecessors, (601), 272 states have call successors, (272), 4 states have call predecessors, (272), 4 states have return successors, (272), 270 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-22 07:23:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1145 transitions. [2024-11-22 07:23:38,970 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1145 transitions. Word has length 499 [2024-11-22 07:23:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:38,989 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1145 transitions. [2024-11-22 07:23:38,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1145 transitions. [2024-11-22 07:23:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-22 07:23:38,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:38,995 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:38,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:23:38,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1798372039, now seen corresponding path program 1 times [2024-11-22 07:23:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:38,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68181413] [2024-11-22 07:23:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68181413] [2024-11-22 07:23:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68181413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:23:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380706838] [2024-11-22 07:23:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:39,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:23:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:23:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:23:39,199 INFO L87 Difference]: Start difference. First operand 698 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:39,270 INFO L93 Difference]: Finished difference Result 2088 states and 3429 transitions. [2024-11-22 07:23:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:23:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-22 07:23:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:39,280 INFO L225 Difference]: With dead ends: 2088 [2024-11-22 07:23:39,280 INFO L226 Difference]: Without dead ends: 1393 [2024-11-22 07:23:39,282 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 07:23:39,283 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 330 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:39,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:23:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-11-22 07:23:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2024-11-22 07:23:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 838 states have (on average 1.4248210023866348) internal successors, (1194), 842 states have internal predecessors, (1194), 544 states have call successors, (544), 8 states have call predecessors, (544), 8 states have return successors, (544), 540 states have call predecessors, (544), 544 states have call successors, (544) [2024-11-22 07:23:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2282 transitions. [2024-11-22 07:23:39,447 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2282 transitions. Word has length 499 [2024-11-22 07:23:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:39,448 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 2282 transitions. [2024-11-22 07:23:39,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:39,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2282 transitions. [2024-11-22 07:23:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-22 07:23:39,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:39,455 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:39,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:23:39,455 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:39,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:39,456 INFO L85 PathProgramCache]: Analyzing trace with hash 651228091, now seen corresponding path program 1 times [2024-11-22 07:23:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756883843] [2024-11-22 07:23:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:39,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:39,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756883843] [2024-11-22 07:23:39,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756883843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:39,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:39,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:23:39,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490307660] [2024-11-22 07:23:39,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:39,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:23:39,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:23:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:23:39,955 INFO L87 Difference]: Start difference. First operand 1391 states and 2282 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:40,763 INFO L93 Difference]: Finished difference Result 5153 states and 8451 transitions. [2024-11-22 07:23:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:23:40,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-22 07:23:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:40,783 INFO L225 Difference]: With dead ends: 5153 [2024-11-22 07:23:40,784 INFO L226 Difference]: Without dead ends: 3765 [2024-11-22 07:23:40,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:23:40,791 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 633 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:40,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 933 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:23:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-22 07:23:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 2367. [2024-11-22 07:23:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1502 states have (on average 1.4567243675099868) internal successors, (2188), 1514 states have internal predecessors, (2188), 848 states have call successors, (848), 16 states have call predecessors, (848), 16 states have return successors, (848), 836 states have call predecessors, (848), 848 states have call successors, (848) [2024-11-22 07:23:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3884 transitions. [2024-11-22 07:23:41,115 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3884 transitions. Word has length 499 [2024-11-22 07:23:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:41,116 INFO L471 AbstractCegarLoop]: Abstraction has 2367 states and 3884 transitions. [2024-11-22 07:23:41,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3884 transitions. [2024-11-22 07:23:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-22 07:23:41,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:41,120 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:41,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 07:23:41,120 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:41,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash -166420359, now seen corresponding path program 1 times [2024-11-22 07:23:41,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:41,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467387709] [2024-11-22 07:23:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467387709] [2024-11-22 07:23:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467387709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:23:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308137956] [2024-11-22 07:23:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:41,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:23:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:41,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:23:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:23:41,603 INFO L87 Difference]: Start difference. First operand 2367 states and 3884 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:42,518 INFO L93 Difference]: Finished difference Result 7475 states and 12201 transitions. [2024-11-22 07:23:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:23:42,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-22 07:23:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:42,546 INFO L225 Difference]: With dead ends: 7475 [2024-11-22 07:23:42,546 INFO L226 Difference]: Without dead ends: 5111 [2024-11-22 07:23:42,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:23:42,554 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 627 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:42,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 936 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:23:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5111 states. [2024-11-22 07:23:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5111 to 3263. [2024-11-22 07:23:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2086 states have (on average 1.4439117929050815) internal successors, (3012), 2106 states have internal predecessors, (3012), 1144 states have call successors, (1144), 32 states have call predecessors, (1144), 32 states have return successors, (1144), 1124 states have call predecessors, (1144), 1144 states have call successors, (1144) [2024-11-22 07:23:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 5300 transitions. [2024-11-22 07:23:42,972 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 5300 transitions. Word has length 499 [2024-11-22 07:23:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:42,973 INFO L471 AbstractCegarLoop]: Abstraction has 3263 states and 5300 transitions. [2024-11-22 07:23:42,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 5300 transitions. [2024-11-22 07:23:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-22 07:23:42,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:42,979 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:42,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:23:42,979 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:42,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2134402231, now seen corresponding path program 1 times [2024-11-22 07:23:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:42,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042076059] [2024-11-22 07:23:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:43,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042076059] [2024-11-22 07:23:43,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042076059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:43,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:43,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:23:43,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103207565] [2024-11-22 07:23:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:43,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:23:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:23:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:23:43,376 INFO L87 Difference]: Start difference. First operand 3263 states and 5300 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:44,245 INFO L93 Difference]: Finished difference Result 11525 states and 18639 transitions. [2024-11-22 07:23:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:23:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-22 07:23:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:44,302 INFO L225 Difference]: With dead ends: 11525 [2024-11-22 07:23:44,302 INFO L226 Difference]: Without dead ends: 8265 [2024-11-22 07:23:44,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:23:44,316 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 477 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:44,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1324 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:23:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2024-11-22 07:23:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 8213. [2024-11-22 07:23:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 5620 states have (on average 1.4768683274021353) internal successors, (8300), 5688 states have internal predecessors, (8300), 2488 states have call successors, (2488), 104 states have call predecessors, (2488), 104 states have return successors, (2488), 2420 states have call predecessors, (2488), 2488 states have call successors, (2488) [2024-11-22 07:23:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 13276 transitions. [2024-11-22 07:23:45,444 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 13276 transitions. Word has length 499 [2024-11-22 07:23:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:45,446 INFO L471 AbstractCegarLoop]: Abstraction has 8213 states and 13276 transitions. [2024-11-22 07:23:45,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 13276 transitions. [2024-11-22 07:23:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-22 07:23:45,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:45,456 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:45,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:23:45,457 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:45,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1886255737, now seen corresponding path program 1 times [2024-11-22 07:23:45,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358949361] [2024-11-22 07:23:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:45,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 159 proven. 81 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:23:45,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:45,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358949361] [2024-11-22 07:23:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358949361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:45,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015847599] [2024-11-22 07:23:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:45,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:45,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:45,951 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 07:23:45,952 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 07:23:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:46,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:23:46,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 2270 proven. 21 refuted. 0 times theorem prover too weak. 10669 trivial. 0 not checked. [2024-11-22 07:23:46,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 219 proven. 21 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:23:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015847599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:46,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-22 07:23:46,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800487075] [2024-11-22 07:23:46,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:46,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 07:23:46,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 07:23:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:23:46,731 INFO L87 Difference]: Start difference. First operand 8213 states and 13276 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 4 states have call predecessors, (117), 4 states have call successors, (117) [2024-11-22 07:23:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:47,850 INFO L93 Difference]: Finished difference Result 16679 states and 26793 transitions. [2024-11-22 07:23:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 07:23:47,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 4 states have call predecessors, (117), 4 states have call successors, (117) Word has length 499 [2024-11-22 07:23:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:47,892 INFO L225 Difference]: With dead ends: 16679 [2024-11-22 07:23:47,892 INFO L226 Difference]: Without dead ends: 8469 [2024-11-22 07:23:47,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-22 07:23:47,912 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 328 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:47,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 635 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:23:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2024-11-22 07:23:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 8261. [2024-11-22 07:23:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 5656 states have (on average 1.4483734087694484) internal successors, (8192), 5724 states have internal predecessors, (8192), 2488 states have call successors, (2488), 116 states have call predecessors, (2488), 116 states have return successors, (2488), 2420 states have call predecessors, (2488), 2488 states have call successors, (2488) [2024-11-22 07:23:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 13168 transitions. [2024-11-22 07:23:48,908 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 13168 transitions. Word has length 499 [2024-11-22 07:23:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:48,909 INFO L471 AbstractCegarLoop]: Abstraction has 8261 states and 13168 transitions. [2024-11-22 07:23:48,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 4 states have call predecessors, (117), 4 states have call successors, (117) [2024-11-22 07:23:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 13168 transitions. [2024-11-22 07:23:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-22 07:23:48,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:48,919 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:48,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 07:23:49,120 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,SelfDestructingSolverStorable7 [2024-11-22 07:23:49,121 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:49,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1905628309, now seen corresponding path program 1 times [2024-11-22 07:23:49,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:49,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126847742] [2024-11-22 07:23:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:49,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 165 proven. 75 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:23:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126847742] [2024-11-22 07:23:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126847742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067024858] [2024-11-22 07:23:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:49,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:49,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:49,676 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 07:23:49,677 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 07:23:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:49,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:23:49,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 5690 proven. 75 refuted. 0 times theorem prover too weak. 7195 trivial. 0 not checked. [2024-11-22 07:23:50,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 165 proven. 75 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:23:50,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067024858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:50,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:50,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 07:23:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441584422] [2024-11-22 07:23:50,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:50,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:23:50,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:23:50,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:23:50,658 INFO L87 Difference]: Start difference. First operand 8261 states and 13168 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-22 07:23:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:51,364 INFO L93 Difference]: Finished difference Result 12658 states and 20136 transitions. [2024-11-22 07:23:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:23:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 500 [2024-11-22 07:23:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:51,411 INFO L225 Difference]: With dead ends: 12658 [2024-11-22 07:23:51,411 INFO L226 Difference]: Without dead ends: 4400 [2024-11-22 07:23:51,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 997 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-22 07:23:51,445 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 346 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:51,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 578 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:23:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2024-11-22 07:23:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 2746. [2024-11-22 07:23:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 1871 states have (on average 1.4216996258685195) internal successors, (2660), 1893 states have internal predecessors, (2660), 834 states have call successors, (834), 40 states have call predecessors, (834), 40 states have return successors, (834), 812 states have call predecessors, (834), 834 states have call successors, (834) [2024-11-22 07:23:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 4328 transitions. [2024-11-22 07:23:51,790 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 4328 transitions. Word has length 500 [2024-11-22 07:23:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:51,791 INFO L471 AbstractCegarLoop]: Abstraction has 2746 states and 4328 transitions. [2024-11-22 07:23:51,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-22 07:23:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 4328 transitions. [2024-11-22 07:23:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-22 07:23:51,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:51,805 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:51,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 07:23:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:52,006 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:52,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1881761632, now seen corresponding path program 1 times [2024-11-22 07:23:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165814914] [2024-11-22 07:23:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165814914] [2024-11-22 07:23:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165814914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:52,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:52,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:23:52,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300457063] [2024-11-22 07:23:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:52,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:23:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:23:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:23:52,428 INFO L87 Difference]: Start difference. First operand 2746 states and 4328 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:52,769 INFO L93 Difference]: Finished difference Result 6505 states and 10258 transitions. [2024-11-22 07:23:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:23:52,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 503 [2024-11-22 07:23:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:52,797 INFO L225 Difference]: With dead ends: 6505 [2024-11-22 07:23:52,797 INFO L226 Difference]: Without dead ends: 3762 [2024-11-22 07:23:52,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:23:52,814 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 189 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:52,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 744 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:23:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2024-11-22 07:23:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3756. [2024-11-22 07:23:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2540 states have (on average 1.415748031496063) internal successors, (3596), 2569 states have internal predecessors, (3596), 1159 states have call successors, (1159), 56 states have call predecessors, (1159), 56 states have return successors, (1159), 1130 states have call predecessors, (1159), 1159 states have call successors, (1159) [2024-11-22 07:23:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5914 transitions. [2024-11-22 07:23:53,190 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5914 transitions. Word has length 503 [2024-11-22 07:23:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:53,191 INFO L471 AbstractCegarLoop]: Abstraction has 3756 states and 5914 transitions. [2024-11-22 07:23:53,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5914 transitions. [2024-11-22 07:23:53,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-22 07:23:53,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:53,198 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:53,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 07:23:53,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:53,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2066663592, now seen corresponding path program 1 times [2024-11-22 07:23:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397507188] [2024-11-22 07:23:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:23:54,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:54,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397507188] [2024-11-22 07:23:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397507188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:54,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:54,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:23:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116957571] [2024-11-22 07:23:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:54,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:23:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:23:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:23:54,226 INFO L87 Difference]: Start difference. First operand 3756 states and 5914 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:57,945 INFO L93 Difference]: Finished difference Result 15477 states and 24256 transitions. [2024-11-22 07:23:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 07:23:57,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 504 [2024-11-22 07:23:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:58,015 INFO L225 Difference]: With dead ends: 15477 [2024-11-22 07:23:58,015 INFO L226 Difference]: Without dead ends: 11724 [2024-11-22 07:23:58,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 07:23:58,033 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 895 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:58,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2074 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 07:23:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11724 states. [2024-11-22 07:23:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11724 to 9888. [2024-11-22 07:23:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9888 states, 6446 states have (on average 1.3785293205088427) internal successors, (8886), 6535 states have internal predecessors, (8886), 3292 states have call successors, (3292), 149 states have call predecessors, (3292), 149 states have return successors, (3292), 3203 states have call predecessors, (3292), 3292 states have call successors, (3292) [2024-11-22 07:23:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9888 states to 9888 states and 15470 transitions. [2024-11-22 07:23:59,585 INFO L78 Accepts]: Start accepts. Automaton has 9888 states and 15470 transitions. Word has length 504 [2024-11-22 07:23:59,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:59,586 INFO L471 AbstractCegarLoop]: Abstraction has 9888 states and 15470 transitions. [2024-11-22 07:23:59,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:23:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9888 states and 15470 transitions. [2024-11-22 07:23:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-22 07:23:59,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:59,594 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:59,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 07:23:59,594 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:59,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2094290198, now seen corresponding path program 1 times [2024-11-22 07:23:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:59,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721073917] [2024-11-22 07:23:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:24:00,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721073917] [2024-11-22 07:24:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721073917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:00,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:00,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 07:24:00,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468945987] [2024-11-22 07:24:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:00,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:24:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:24:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:24:00,453 INFO L87 Difference]: Start difference. First operand 9888 states and 15470 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:24:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:05,861 INFO L93 Difference]: Finished difference Result 32469 states and 50711 transitions. [2024-11-22 07:24:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:24:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 504 [2024-11-22 07:24:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:05,979 INFO L225 Difference]: With dead ends: 32469 [2024-11-22 07:24:05,979 INFO L226 Difference]: Without dead ends: 22584 [2024-11-22 07:24:06,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 07:24:06,028 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 1010 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:06,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1982 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 07:24:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22584 states. [2024-11-22 07:24:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22584 to 20488. [2024-11-22 07:24:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20488 states, 13431 states have (on average 1.3833668379122925) internal successors, (18580), 13632 states have internal predecessors, (18580), 6738 states have call successors, (6738), 318 states have call predecessors, (6738), 318 states have return successors, (6738), 6537 states have call predecessors, (6738), 6738 states have call successors, (6738) [2024-11-22 07:24:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20488 states to 20488 states and 32056 transitions. [2024-11-22 07:24:09,534 INFO L78 Accepts]: Start accepts. Automaton has 20488 states and 32056 transitions. Word has length 504 [2024-11-22 07:24:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:09,535 INFO L471 AbstractCegarLoop]: Abstraction has 20488 states and 32056 transitions. [2024-11-22 07:24:09,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:24:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 20488 states and 32056 transitions. [2024-11-22 07:24:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-22 07:24:09,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:09,553 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:09,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 07:24:09,554 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:09,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1417950808, now seen corresponding path program 1 times [2024-11-22 07:24:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:09,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467178309] [2024-11-22 07:24:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 111 proven. 129 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:24:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:10,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467178309] [2024-11-22 07:24:10,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467178309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:10,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130620137] [2024-11-22 07:24:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:10,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:10,264 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 07:24:10,265 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 07:24:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:10,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 07:24:10,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 4571 proven. 93 refuted. 0 times theorem prover too weak. 8296 trivial. 0 not checked. [2024-11-22 07:24:11,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 381 proven. 96 refuted. 0 times theorem prover too weak. 12483 trivial. 0 not checked. [2024-11-22 07:24:11,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130620137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:24:11,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:24:11,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 19 [2024-11-22 07:24:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10602347] [2024-11-22 07:24:11,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:24:11,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 07:24:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 07:24:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-22 07:24:11,770 INFO L87 Difference]: Start difference. First operand 20488 states and 32056 transitions. Second operand has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 6 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (143), 6 states have call predecessors, (143), 6 states have call successors, (143) [2024-11-22 07:24:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:15,336 INFO L93 Difference]: Finished difference Result 37412 states and 58183 transitions. [2024-11-22 07:24:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 07:24:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 6 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (143), 6 states have call predecessors, (143), 6 states have call successors, (143) Word has length 504 [2024-11-22 07:24:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:15,439 INFO L225 Difference]: With dead ends: 37412 [2024-11-22 07:24:15,440 INFO L226 Difference]: Without dead ends: 16927 [2024-11-22 07:24:15,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 996 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 07:24:15,502 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 793 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:15,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1452 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 07:24:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16927 states. [2024-11-22 07:24:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16927 to 11606. [2024-11-22 07:24:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11606 states, 7789 states have (on average 1.3710360765181666) internal successors, (10679), 7888 states have internal predecessors, (10679), 3600 states have call successors, (3600), 216 states have call predecessors, (3600), 216 states have return successors, (3600), 3501 states have call predecessors, (3600), 3600 states have call successors, (3600) [2024-11-22 07:24:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11606 states to 11606 states and 17879 transitions. [2024-11-22 07:24:18,247 INFO L78 Accepts]: Start accepts. Automaton has 11606 states and 17879 transitions. Word has length 504 [2024-11-22 07:24:18,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:18,248 INFO L471 AbstractCegarLoop]: Abstraction has 11606 states and 17879 transitions. [2024-11-22 07:24:18,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 6 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (143), 6 states have call predecessors, (143), 6 states have call successors, (143) [2024-11-22 07:24:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11606 states and 17879 transitions. [2024-11-22 07:24:18,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-22 07:24:18,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:18,258 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:18,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 07:24:18,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:18,459 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:18,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1882192190, now seen corresponding path program 1 times [2024-11-22 07:24:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:18,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414730899] [2024-11-22 07:24:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:24:19,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414730899] [2024-11-22 07:24:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414730899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:19,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 07:24:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661731913] [2024-11-22 07:24:19,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:19,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 07:24:19,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 07:24:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 07:24:19,129 INFO L87 Difference]: Start difference. First operand 11606 states and 17879 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:24:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:24,497 INFO L93 Difference]: Finished difference Result 30582 states and 46906 transitions. [2024-11-22 07:24:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 07:24:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 505 [2024-11-22 07:24:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:24,615 INFO L225 Difference]: With dead ends: 30582 [2024-11-22 07:24:24,615 INFO L226 Difference]: Without dead ends: 21810 [2024-11-22 07:24:24,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2024-11-22 07:24:24,645 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 1747 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:24,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2541 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 07:24:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21810 states. [2024-11-22 07:24:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21810 to 18557. [2024-11-22 07:24:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18557 states, 12280 states have (on average 1.3537459283387623) internal successors, (16624), 12444 states have internal predecessors, (16624), 5895 states have call successors, (5895), 381 states have call predecessors, (5895), 381 states have return successors, (5895), 5731 states have call predecessors, (5895), 5895 states have call successors, (5895) [2024-11-22 07:24:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18557 states to 18557 states and 28414 transitions. [2024-11-22 07:24:28,155 INFO L78 Accepts]: Start accepts. Automaton has 18557 states and 28414 transitions. Word has length 505 [2024-11-22 07:24:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:28,156 INFO L471 AbstractCegarLoop]: Abstraction has 18557 states and 28414 transitions. [2024-11-22 07:24:28,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:24:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18557 states and 28414 transitions. [2024-11-22 07:24:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-22 07:24:28,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:28,172 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:28,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 07:24:28,172 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:28,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash -293844288, now seen corresponding path program 1 times [2024-11-22 07:24:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165915203] [2024-11-22 07:24:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-22 07:24:28,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165915203] [2024-11-22 07:24:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165915203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:28,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:28,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 07:24:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191653122] [2024-11-22 07:24:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:28,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:24:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:24:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:24:28,860 INFO L87 Difference]: Start difference. First operand 18557 states and 28414 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:24:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:38,399 INFO L93 Difference]: Finished difference Result 61884 states and 94897 transitions. [2024-11-22 07:24:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:24:38,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 505 [2024-11-22 07:24:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:38,587 INFO L225 Difference]: With dead ends: 61884 [2024-11-22 07:24:38,587 INFO L226 Difference]: Without dead ends: 43225 [2024-11-22 07:24:38,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:24:38,655 INFO L432 NwaCegarLoop]: 577 mSDtfsCounter, 1050 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:38,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2243 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 07:24:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43225 states. [2024-11-22 07:24:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43225 to 31407. [2024-11-22 07:24:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31407 states, 21477 states have (on average 1.3764026633142432) internal successors, (29561), 21733 states have internal predecessors, (29561), 9318 states have call successors, (9318), 611 states have call predecessors, (9318), 611 states have return successors, (9318), 9062 states have call predecessors, (9318), 9318 states have call successors, (9318) [2024-11-22 07:24:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31407 states to 31407 states and 48197 transitions. [2024-11-22 07:24:45,714 INFO L78 Accepts]: Start accepts. Automaton has 31407 states and 48197 transitions. Word has length 505 [2024-11-22 07:24:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:45,715 INFO L471 AbstractCegarLoop]: Abstraction has 31407 states and 48197 transitions. [2024-11-22 07:24:45,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-22 07:24:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 31407 states and 48197 transitions. [2024-11-22 07:24:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-22 07:24:45,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:45,742 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:45,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 07:24:45,742 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:45,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1167419482, now seen corresponding path program 1 times [2024-11-22 07:24:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829208839] [2024-11-22 07:24:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 117 proven. 123 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:24:46,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:46,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829208839] [2024-11-22 07:24:46,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829208839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:46,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620684520] [2024-11-22 07:24:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:46,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:46,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:46,123 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 07:24:46,128 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 07:24:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:46,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 07:24:46,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 4110 proven. 45 refuted. 0 times theorem prover too weak. 8805 trivial. 0 not checked. [2024-11-22 07:24:46,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 195 proven. 45 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-22 07:24:46,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620684520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:24:46,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:24:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-22 07:24:46,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057283930] [2024-11-22 07:24:46,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:24:46,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 07:24:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 07:24:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-22 07:24:46,964 INFO L87 Difference]: Start difference. First operand 31407 states and 48197 transitions. Second operand has 11 states, 11 states have (on average 18.90909090909091) internal successors, (208), 11 states have internal predecessors, (208), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (139), 4 states have call predecessors, (139), 4 states have call successors, (139) [2024-11-22 07:24:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:55,777 INFO L93 Difference]: Finished difference Result 71485 states and 108916 transitions. [2024-11-22 07:24:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 07:24:55,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.90909090909091) internal successors, (208), 11 states have internal predecessors, (208), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (139), 4 states have call predecessors, (139), 4 states have call successors, (139) Word has length 505 [2024-11-22 07:24:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:55,963 INFO L225 Difference]: With dead ends: 71485 [2024-11-22 07:24:55,963 INFO L226 Difference]: Without dead ends: 40122 [2024-11-22 07:24:56,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=357, Invalid=833, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 07:24:56,032 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 563 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:56,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1200 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 07:24:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40122 states.