./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.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 963153236bfee4fba7310de151468b7ab2713ef3b9442c5a0ed9bd52a1f2d263 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:16:05,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:16:05,481 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:16:05,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:16:05,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:16:05,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:16:05,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:16:05,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:16:05,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:16:05,519 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:16:05,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:16:05,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:16:05,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:16:05,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:16:05,522 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:16:05,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:16:05,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:16:05,522 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:16:05,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:16:05,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:16:05,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:16:05,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:16:05,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:16:05,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:16:05,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:16:05,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:16:05,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:16:05,530 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:16:05,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:16:05,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:16:05,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:16:05,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:16:05,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:16:05,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:16:05,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:16:05,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:16:05,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:16:05,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:16:05,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:16:05,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:16:05,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:16:05,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:16:05,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963153236bfee4fba7310de151468b7ab2713ef3b9442c5a0ed9bd52a1f2d263 [2024-11-19 01:16:05,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:16:05,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:16:05,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:16:05,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:16:05,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:16:05,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i [2024-11-19 01:16:07,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:16:07,529 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:16:07,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i [2024-11-19 01:16:07,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8023d77a0/faab4e563ac34f7cb52ac679f09d87d3/FLAGf84c3f6b1 [2024-11-19 01:16:07,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8023d77a0/faab4e563ac34f7cb52ac679f09d87d3 [2024-11-19 01:16:07,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:16:07,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:16:07,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:16:07,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:16:07,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:16:07,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:16:07" (1/1) ... [2024-11-19 01:16:07,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484aae95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:07, skipping insertion in model container [2024-11-19 01:16:07,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:16:07" (1/1) ... [2024-11-19 01:16:07,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:16:08,112 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_variablewrapping_wrapper-sp_file-3.i[916,929] [2024-11-19 01:16:08,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:16:08,221 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:16:08,232 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_variablewrapping_wrapper-sp_file-3.i[916,929] [2024-11-19 01:16:08,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:16:08,321 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:16:08,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08 WrapperNode [2024-11-19 01:16:08,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:16:08,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:16:08,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:16:08,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:16:08,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,381 INFO L138 Inliner]: procedures = 30, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 641 [2024-11-19 01:16:08,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:16:08,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:16:08,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:16:08,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:16:08,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,427 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:16:08,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:16:08,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:16:08,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:16:08,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:16:08,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (1/1) ... [2024-11-19 01:16:08,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:16:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:08,517 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) [2024-11-19 01:16:08,527 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 [2024-11-19 01:16:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:16:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:16:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:16:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:16:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:16:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:16:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:16:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:16:08,583 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:16:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:16:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:16:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:16:08,732 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:16:08,734 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:16:09,466 INFO L? ?]: Removed 174 outVars from TransFormulas that were not future-live. [2024-11-19 01:16:09,467 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:16:09,485 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:16:09,486 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:16:09,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:16:09 BoogieIcfgContainer [2024-11-19 01:16:09,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:16:09,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:16:09,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:16:09,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:16:09,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:16:07" (1/3) ... [2024-11-19 01:16:09,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e69b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:16:09, skipping insertion in model container [2024-11-19 01:16:09,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:08" (2/3) ... [2024-11-19 01:16:09,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e69b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:16:09, skipping insertion in model container [2024-11-19 01:16:09,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:16:09" (3/3) ... [2024-11-19 01:16:09,495 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-3.i [2024-11-19 01:16:09,512 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:16:09,512 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:16:09,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:16:09,578 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;@544a18c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:16:09,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:16:09,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 130 states have (on average 1.4615384615384615) internal successors, (190), 131 states have internal predecessors, (190), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:16:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 01:16:09,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:09,602 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:09,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:09,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:09,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1212346061, now seen corresponding path program 1 times [2024-11-19 01:16:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481030931] [2024-11-19 01:16:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:09,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:16:10,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481030931] [2024-11-19 01:16:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481030931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:16:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195070371] [2024-11-19 01:16:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:10,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:10,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:10,578 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) [2024-11-19 01:16:10,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:16:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:10,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:16:10,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:16:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:10,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:16:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195070371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:10,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:16:10,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-19 01:16:10,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906704735] [2024-11-19 01:16:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:10,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:16:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:16:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:16:10,993 INFO L87 Difference]: Start difference. First operand has 149 states, 130 states have (on average 1.4615384615384615) internal successors, (190), 131 states have internal predecessors, (190), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:11,058 INFO L93 Difference]: Finished difference Result 293 states and 457 transitions. [2024-11-19 01:16:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:16:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2024-11-19 01:16:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:11,074 INFO L225 Difference]: With dead ends: 293 [2024-11-19 01:16:11,075 INFO L226 Difference]: Without dead ends: 147 [2024-11-19 01:16:11,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:16:11,082 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:11,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 628 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:16:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-19 01:16:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-19 01:16:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 129 states have (on average 1.434108527131783) internal successors, (185), 129 states have internal predecessors, (185), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:16:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 217 transitions. [2024-11-19 01:16:11,170 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 217 transitions. Word has length 133 [2024-11-19 01:16:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:11,172 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 217 transitions. [2024-11-19 01:16:11,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 217 transitions. [2024-11-19 01:16:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 01:16:11,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:11,181 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:11,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:16:11,381 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 [2024-11-19 01:16:11,382 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:11,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash -500527483, now seen corresponding path program 1 times [2024-11-19 01:16:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:11,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235478819] [2024-11-19 01:16:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:11,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235478819] [2024-11-19 01:16:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235478819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:11,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:16:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832565580] [2024-11-19 01:16:11,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:11,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:16:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:16:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:16:11,583 INFO L87 Difference]: Start difference. First operand 147 states and 217 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:11,621 INFO L93 Difference]: Finished difference Result 368 states and 546 transitions. [2024-11-19 01:16:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:16:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 135 [2024-11-19 01:16:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:11,624 INFO L225 Difference]: With dead ends: 368 [2024-11-19 01:16:11,624 INFO L226 Difference]: Without dead ends: 224 [2024-11-19 01:16:11,626 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 [2024-11-19 01:16:11,627 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 114 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:11,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 412 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:16:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-19 01:16:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 179. [2024-11-19 01:16:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 161 states have (on average 1.453416149068323) internal successors, (234), 161 states have internal predecessors, (234), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:16:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 266 transitions. [2024-11-19 01:16:11,655 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 266 transitions. Word has length 135 [2024-11-19 01:16:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:11,658 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 266 transitions. [2024-11-19 01:16:11,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 266 transitions. [2024-11-19 01:16:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 01:16:11,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:11,662 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:11,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:16:11,663 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:11,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1678409010, now seen corresponding path program 1 times [2024-11-19 01:16:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:11,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764637723] [2024-11-19 01:16:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:13,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:13,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764637723] [2024-11-19 01:16:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764637723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:13,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:13,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:16:13,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248348942] [2024-11-19 01:16:13,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:13,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:16:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:16:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:16:13,790 INFO L87 Difference]: Start difference. First operand 179 states and 266 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:14,090 INFO L93 Difference]: Finished difference Result 436 states and 650 transitions. [2024-11-19 01:16:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:16:14,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2024-11-19 01:16:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:14,099 INFO L225 Difference]: With dead ends: 436 [2024-11-19 01:16:14,100 INFO L226 Difference]: Without dead ends: 260 [2024-11-19 01:16:14,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:16:14,102 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 61 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:14,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 655 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:16:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-19 01:16:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 248. [2024-11-19 01:16:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 213 states have (on average 1.4178403755868545) internal successors, (302), 213 states have internal predecessors, (302), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-19 01:16:14,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 366 transitions. [2024-11-19 01:16:14,133 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 366 transitions. Word has length 135 [2024-11-19 01:16:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:14,133 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 366 transitions. [2024-11-19 01:16:14,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 366 transitions. [2024-11-19 01:16:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-19 01:16:14,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:14,143 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:14,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:16:14,144 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:14,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash 741335402, now seen corresponding path program 1 times [2024-11-19 01:16:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:14,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019527638] [2024-11-19 01:16:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:16:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019527638] [2024-11-19 01:16:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019527638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:16:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81759474] [2024-11-19 01:16:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:15,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:15,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:15,842 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) [2024-11-19 01:16:15,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:16:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:16,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 01:16:16,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:16:18,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2024-11-19 01:16:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:16:18,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2024-11-19 01:16:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:18,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:16:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81759474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:18,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:16:18,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2024-11-19 01:16:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58683359] [2024-11-19 01:16:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:18,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:16:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:16:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:16:18,851 INFO L87 Difference]: Start difference. First operand 248 states and 366 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:19,548 INFO L93 Difference]: Finished difference Result 524 states and 777 transitions. [2024-11-19 01:16:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:16:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2024-11-19 01:16:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:19,551 INFO L225 Difference]: With dead ends: 524 [2024-11-19 01:16:19,551 INFO L226 Difference]: Without dead ends: 348 [2024-11-19 01:16:19,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:16:19,554 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 309 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:19,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1405 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:16:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-19 01:16:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 306. [2024-11-19 01:16:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 271 states have (on average 1.4354243542435425) internal successors, (389), 271 states have internal predecessors, (389), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-19 01:16:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 453 transitions. [2024-11-19 01:16:19,592 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 453 transitions. Word has length 136 [2024-11-19 01:16:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:19,594 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 453 transitions. [2024-11-19 01:16:19,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 453 transitions. [2024-11-19 01:16:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-19 01:16:19,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:19,596 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:19,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:16:19,800 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,SelfDestructingSolverStorable3 [2024-11-19 01:16:19,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:19,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash -608558604, now seen corresponding path program 1 times [2024-11-19 01:16:19,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:19,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703801035] [2024-11-19 01:16:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:19,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703801035] [2024-11-19 01:16:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703801035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:21,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:16:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834902595] [2024-11-19 01:16:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:21,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:16:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:16:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:16:21,521 INFO L87 Difference]: Start difference. First operand 306 states and 453 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:21,855 INFO L93 Difference]: Finished difference Result 771 states and 1150 transitions. [2024-11-19 01:16:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:16:21,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2024-11-19 01:16:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:21,860 INFO L225 Difference]: With dead ends: 771 [2024-11-19 01:16:21,860 INFO L226 Difference]: Without dead ends: 537 [2024-11-19 01:16:21,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:16:21,863 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 297 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:21,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 831 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:16:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-19 01:16:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 472. [2024-11-19 01:16:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 420 states have (on average 1.4404761904761905) internal successors, (605), 420 states have internal predecessors, (605), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:16:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 701 transitions. [2024-11-19 01:16:21,915 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 701 transitions. Word has length 137 [2024-11-19 01:16:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:21,917 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 701 transitions. [2024-11-19 01:16:21,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 701 transitions. [2024-11-19 01:16:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-19 01:16:21,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:21,919 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:21,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:16:21,921 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:21,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1514344948, now seen corresponding path program 1 times [2024-11-19 01:16:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:21,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535855848] [2024-11-19 01:16:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:16:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535855848] [2024-11-19 01:16:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535855848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:16:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344831242] [2024-11-19 01:16:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:22,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:22,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:22,138 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) [2024-11-19 01:16:22,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:16:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:22,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:16:22,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:16:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:22,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:16:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344831242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:16:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-19 01:16:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956139414] [2024-11-19 01:16:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:22,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:16:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:16:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:16:22,427 INFO L87 Difference]: Start difference. First operand 472 states and 701 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:22,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:22,475 INFO L93 Difference]: Finished difference Result 881 states and 1311 transitions. [2024-11-19 01:16:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:16:22,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2024-11-19 01:16:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:22,481 INFO L225 Difference]: With dead ends: 881 [2024-11-19 01:16:22,481 INFO L226 Difference]: Without dead ends: 481 [2024-11-19 01:16:22,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:16:22,484 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:22,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 833 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:16:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-19 01:16:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 475. [2024-11-19 01:16:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 423 states have (on average 1.4373522458628842) internal successors, (608), 423 states have internal predecessors, (608), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:16:22,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 704 transitions. [2024-11-19 01:16:22,519 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 704 transitions. Word has length 137 [2024-11-19 01:16:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:22,520 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 704 transitions. [2024-11-19 01:16:22,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:22,520 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 704 transitions. [2024-11-19 01:16:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 01:16:22,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:22,523 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:22,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:16:22,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:22,724 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:22,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash -285582379, now seen corresponding path program 1 times [2024-11-19 01:16:22,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:22,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875345745] [2024-11-19 01:16:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:22,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:16:22,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:22,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875345745] [2024-11-19 01:16:22,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875345745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:16:22,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272715805] [2024-11-19 01:16:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:22,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:22,947 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) [2024-11-19 01:16:22,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:16:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:23,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:16:23,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:16:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:23,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:16:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272715805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:16:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 01:16:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745253169] [2024-11-19 01:16:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:23,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:16:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:16:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:16:23,245 INFO L87 Difference]: Start difference. First operand 475 states and 704 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:23,287 INFO L93 Difference]: Finished difference Result 884 states and 1313 transitions. [2024-11-19 01:16:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:16:23,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-19 01:16:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:23,291 INFO L225 Difference]: With dead ends: 884 [2024-11-19 01:16:23,291 INFO L226 Difference]: Without dead ends: 481 [2024-11-19 01:16:23,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:16:23,293 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:23,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:16:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-19 01:16:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-19 01:16:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 429 states have (on average 1.4312354312354312) internal successors, (614), 429 states have internal predecessors, (614), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:16:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 710 transitions. [2024-11-19 01:16:23,323 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 710 transitions. Word has length 138 [2024-11-19 01:16:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:23,324 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 710 transitions. [2024-11-19 01:16:23,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 710 transitions. [2024-11-19 01:16:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 01:16:23,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:23,327 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:23,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:16:23,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:23,528 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:23,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 903635364, now seen corresponding path program 1 times [2024-11-19 01:16:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010312950] [2024-11-19 01:16:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:24,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:24,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010312950] [2024-11-19 01:16:24,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010312950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:24,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:24,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:16:24,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866121993] [2024-11-19 01:16:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:24,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:16:24,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:24,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:16:24,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:16:24,279 INFO L87 Difference]: Start difference. First operand 481 states and 710 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:24,894 INFO L93 Difference]: Finished difference Result 930 states and 1372 transitions. [2024-11-19 01:16:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:16:24,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-19 01:16:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:24,899 INFO L225 Difference]: With dead ends: 930 [2024-11-19 01:16:24,899 INFO L226 Difference]: Without dead ends: 691 [2024-11-19 01:16:24,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:16:24,901 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 518 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:24,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1001 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:16:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-19 01:16:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 541. [2024-11-19 01:16:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 489 states have (on average 1.4396728016359919) internal successors, (704), 489 states have internal predecessors, (704), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:16:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 800 transitions. [2024-11-19 01:16:24,934 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 800 transitions. Word has length 138 [2024-11-19 01:16:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:24,934 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 800 transitions. [2024-11-19 01:16:24,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 800 transitions. [2024-11-19 01:16:24,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 01:16:24,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:24,937 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:24,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:16:24,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:24,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1188514192, now seen corresponding path program 1 times [2024-11-19 01:16:24,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:24,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376412856] [2024-11-19 01:16:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376412856] [2024-11-19 01:16:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376412856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:16:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133062357] [2024-11-19 01:16:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:25,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:16:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:16:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:16:25,693 INFO L87 Difference]: Start difference. First operand 541 states and 800 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:26,204 INFO L93 Difference]: Finished difference Result 990 states and 1461 transitions. [2024-11-19 01:16:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:16:26,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-19 01:16:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:26,208 INFO L225 Difference]: With dead ends: 990 [2024-11-19 01:16:26,208 INFO L226 Difference]: Without dead ends: 691 [2024-11-19 01:16:26,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:16:26,211 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 461 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:26,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1189 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:16:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-19 01:16:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 601. [2024-11-19 01:16:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 549 states have (on average 1.4462659380692167) internal successors, (794), 549 states have internal predecessors, (794), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:16:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 890 transitions. [2024-11-19 01:16:26,266 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 890 transitions. Word has length 138 [2024-11-19 01:16:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:26,267 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 890 transitions. [2024-11-19 01:16:26,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 890 transitions. [2024-11-19 01:16:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:16:26,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:26,270 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:26,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:16:26,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:26,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 735618990, now seen corresponding path program 1 times [2024-11-19 01:16:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:26,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984524624] [2024-11-19 01:16:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:29,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:29,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984524624] [2024-11-19 01:16:29,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984524624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:29,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:29,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:16:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049982906] [2024-11-19 01:16:29,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:29,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:16:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:16:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:16:29,392 INFO L87 Difference]: Start difference. First operand 601 states and 890 transitions. Second operand has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:16:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:30,994 INFO L93 Difference]: Finished difference Result 1400 states and 2071 transitions. [2024-11-19 01:16:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:16:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2024-11-19 01:16:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:30,999 INFO L225 Difference]: With dead ends: 1400 [2024-11-19 01:16:30,999 INFO L226 Difference]: Without dead ends: 871 [2024-11-19 01:16:31,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:16:31,001 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 551 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:31,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 2206 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 01:16:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-11-19 01:16:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 782. [2024-11-19 01:16:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 730 states have (on average 1.4547945205479451) internal successors, (1062), 730 states have internal predecessors, (1062), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:16:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1158 transitions. [2024-11-19 01:16:31,050 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1158 transitions. Word has length 139 [2024-11-19 01:16:31,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:31,052 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1158 transitions. [2024-11-19 01:16:31,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:16:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1158 transitions. [2024-11-19 01:16:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:16:31,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:31,057 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:31,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:16:31,057 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:31,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1436683568, now seen corresponding path program 1 times [2024-11-19 01:16:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:31,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6105191] [2024-11-19 01:16:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:31,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:32,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:32,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6105191] [2024-11-19 01:16:32,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6105191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:32,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:32,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:16:32,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911547283] [2024-11-19 01:16:32,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:32,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:16:32,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:32,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:16:32,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:16:32,175 INFO L87 Difference]: Start difference. First operand 782 states and 1158 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:16:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:32,822 INFO L93 Difference]: Finished difference Result 1622 states and 2391 transitions. [2024-11-19 01:16:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:16:32,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2024-11-19 01:16:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:32,828 INFO L225 Difference]: With dead ends: 1622 [2024-11-19 01:16:32,829 INFO L226 Difference]: Without dead ends: 912 [2024-11-19 01:16:32,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:16:32,831 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 395 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:32,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 866 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:16:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-19 01:16:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 908. [2024-11-19 01:16:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 837 states have (on average 1.4372759856630823) internal successors, (1203), 839 states have internal predecessors, (1203), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-19 01:16:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1331 transitions. [2024-11-19 01:16:32,903 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1331 transitions. Word has length 139 [2024-11-19 01:16:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:32,904 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1331 transitions. [2024-11-19 01:16:32,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:16:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1331 transitions. [2024-11-19 01:16:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:16:32,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:32,908 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:32,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:16:32,908 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:32,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash -82029460, now seen corresponding path program 1 times [2024-11-19 01:16:32,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:32,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476184388] [2024-11-19 01:16:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:32,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:33,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:33,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476184388] [2024-11-19 01:16:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476184388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:33,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:33,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:16:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117785863] [2024-11-19 01:16:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:33,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:16:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:16:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:16:33,860 INFO L87 Difference]: Start difference. First operand 908 states and 1331 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:34,371 INFO L93 Difference]: Finished difference Result 1924 states and 2819 transitions. [2024-11-19 01:16:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:16:34,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-19 01:16:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:34,381 INFO L225 Difference]: With dead ends: 1924 [2024-11-19 01:16:34,382 INFO L226 Difference]: Without dead ends: 1092 [2024-11-19 01:16:34,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:16:34,384 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 290 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:34,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 967 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:16:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2024-11-19 01:16:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 969. [2024-11-19 01:16:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 898 states have (on average 1.4387527839643652) internal successors, (1292), 900 states have internal predecessors, (1292), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-19 01:16:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1420 transitions. [2024-11-19 01:16:34,455 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1420 transitions. Word has length 139 [2024-11-19 01:16:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:34,455 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1420 transitions. [2024-11-19 01:16:34,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1420 transitions. [2024-11-19 01:16:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:16:34,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:34,458 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:34,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:16:34,458 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:34,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 619035118, now seen corresponding path program 1 times [2024-11-19 01:16:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:34,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443317379] [2024-11-19 01:16:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:34,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:37,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443317379] [2024-11-19 01:16:37,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443317379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:37,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:37,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:16:37,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469011675] [2024-11-19 01:16:37,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:37,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:16:37,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:16:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:16:37,286 INFO L87 Difference]: Start difference. First operand 969 states and 1420 transitions. Second operand has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:16:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:38,760 INFO L93 Difference]: Finished difference Result 1950 states and 2859 transitions. [2024-11-19 01:16:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:16:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2024-11-19 01:16:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:38,765 INFO L225 Difference]: With dead ends: 1950 [2024-11-19 01:16:38,765 INFO L226 Difference]: Without dead ends: 1057 [2024-11-19 01:16:38,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:16:38,768 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 278 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:38,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2393 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 01:16:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-19 01:16:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 966. [2024-11-19 01:16:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 895 states have (on average 1.440223463687151) internal successors, (1289), 897 states have internal predecessors, (1289), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-19 01:16:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1417 transitions. [2024-11-19 01:16:38,843 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1417 transitions. Word has length 139 [2024-11-19 01:16:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:38,844 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 1417 transitions. [2024-11-19 01:16:38,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:16:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1417 transitions. [2024-11-19 01:16:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:16:38,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:38,846 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:38,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:16:38,847 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:38,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1014010927, now seen corresponding path program 1 times [2024-11-19 01:16:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815708212] [2024-11-19 01:16:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:38,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:38,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815708212] [2024-11-19 01:16:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815708212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:38,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:38,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:16:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726502376] [2024-11-19 01:16:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:38,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:16:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:16:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:16:38,945 INFO L87 Difference]: Start difference. First operand 966 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:39,049 INFO L93 Difference]: Finished difference Result 2012 states and 2939 transitions. [2024-11-19 01:16:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:16:39,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 139 [2024-11-19 01:16:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:39,054 INFO L225 Difference]: With dead ends: 2012 [2024-11-19 01:16:39,054 INFO L226 Difference]: Without dead ends: 1122 [2024-11-19 01:16:39,056 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 [2024-11-19 01:16:39,057 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 104 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:39,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 510 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 01:16:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-11-19 01:16:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 917. [2024-11-19 01:16:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 846 states have (on average 1.41725768321513) internal successors, (1199), 848 states have internal predecessors, (1199), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-19 01:16:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1327 transitions. [2024-11-19 01:16:39,118 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1327 transitions. Word has length 139 [2024-11-19 01:16:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:39,119 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1327 transitions. [2024-11-19 01:16:39,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:16:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1327 transitions. [2024-11-19 01:16:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-19 01:16:39,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:39,121 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:39,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:16:39,122 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:39,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1227230246, now seen corresponding path program 1 times [2024-11-19 01:16:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033564843] [2024-11-19 01:16:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:41,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:41,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033564843] [2024-11-19 01:16:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033564843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:41,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:41,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:16:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960492483] [2024-11-19 01:16:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:41,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:16:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:16:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:16:41,473 INFO L87 Difference]: Start difference. First operand 917 states and 1327 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 01:16:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:42,706 INFO L93 Difference]: Finished difference Result 1682 states and 2433 transitions. [2024-11-19 01:16:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:16:42,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2024-11-19 01:16:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:42,712 INFO L225 Difference]: With dead ends: 1682 [2024-11-19 01:16:42,712 INFO L226 Difference]: Without dead ends: 1173 [2024-11-19 01:16:42,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2024-11-19 01:16:42,714 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 854 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:42,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1235 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:16:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-11-19 01:16:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 978. [2024-11-19 01:16:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 907 states have (on average 1.420066152149945) internal successors, (1288), 909 states have internal predecessors, (1288), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-19 01:16:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1416 transitions. [2024-11-19 01:16:42,832 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1416 transitions. Word has length 140 [2024-11-19 01:16:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:42,833 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1416 transitions. [2024-11-19 01:16:42,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 01:16:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1416 transitions. [2024-11-19 01:16:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-19 01:16:42,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:42,836 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:42,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:16:42,836 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:42,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -392576892, now seen corresponding path program 1 times [2024-11-19 01:16:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044479020] [2024-11-19 01:16:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:16:44,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:44,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044479020] [2024-11-19 01:16:44,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044479020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:44,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:44,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:16:44,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030402733] [2024-11-19 01:16:44,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:44,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:16:44,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:16:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:16:44,608 INFO L87 Difference]: Start difference. First operand 978 states and 1416 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:45,134 INFO L93 Difference]: Finished difference Result 1632 states and 2363 transitions. [2024-11-19 01:16:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:16:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2024-11-19 01:16:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:45,140 INFO L225 Difference]: With dead ends: 1632 [2024-11-19 01:16:45,140 INFO L226 Difference]: Without dead ends: 1062 [2024-11-19 01:16:45,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:16:45,142 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 696 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:45,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 638 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:16:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2024-11-19 01:16:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 989. [2024-11-19 01:16:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 918 states have (on average 1.4139433551198257) internal successors, (1298), 920 states have internal predecessors, (1298), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-19 01:16:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1426 transitions. [2024-11-19 01:16:45,221 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1426 transitions. Word has length 140 [2024-11-19 01:16:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:45,222 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1426 transitions. [2024-11-19 01:16:45,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:16:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1426 transitions. [2024-11-19 01:16:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 01:16:45,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:45,224 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:45,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:16:45,225 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:45,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash 921922377, now seen corresponding path program 1 times [2024-11-19 01:16:45,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:45,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023799596] [2024-11-19 01:16:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:45,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:16:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023799596] [2024-11-19 01:16:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023799596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:16:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871684584] [2024-11-19 01:16:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:46,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:46,305 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) [2024-11-19 01:16:46,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:16:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:46,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-19 01:16:46,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:16:46,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2024-11-19 01:16:46,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 72 [2024-11-19 01:16:47,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:16:47,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:47,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:48,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:48,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:48,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:49,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:49,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:49,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:50,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:50,191 INFO L349 Elim1Store]: treesize reduction 60, result has 41.7 percent of original size [2024-11-19 01:16:50,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 64 [2024-11-19 01:16:50,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:16:50,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 48 [2024-11-19 01:16:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 152 proven. 93 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-19 01:16:50,672 INFO L311 TraceCheckSpWp]: Computing backward predicates...