./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-34.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_codestructure_steplocals_file-34.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 f39f68f55c90deb8496cdc58f18787083a238252dfdfe92f73d39acb627ae3ba --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:47:19,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:47:19,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 18:47:19,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:47:19,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:47:19,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:47:19,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:47:19,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:47:19,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:47:19,455 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:47:19,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:47:19,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:47:19,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:47:19,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:47:19,460 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:47:19,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:47:19,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:47:19,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 18:47:19,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:47:19,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 18:47:19,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:47:19,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:47:19,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:47:19,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:47:19,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:47:19,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 18:47:19,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:47:19,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:47:19,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:47:19,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:47:19,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:47:19,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:47:19,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:47:19,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:47:19,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:47:19,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:47:19,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:47:19,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:47:19,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:47:19,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:47:19,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:47:19,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:47:19,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f39f68f55c90deb8496cdc58f18787083a238252dfdfe92f73d39acb627ae3ba [2024-11-18 18:47:19,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:47:19,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:47:19,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:47:19,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:47:19,753 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:47:19,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-34.i [2024-11-18 18:47:21,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:47:21,631 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:47:21,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-34.i [2024-11-18 18:47:21,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd8e8846/d84b327f1488408ba7d48de4ae6327e3/FLAG9874c4769 [2024-11-18 18:47:21,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd8e8846/d84b327f1488408ba7d48de4ae6327e3 [2024-11-18 18:47:21,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:47:21,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:47:21,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:47:21,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:47:22,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:47:22,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:21" (1/1) ... [2024-11-18 18:47:22,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e4dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22, skipping insertion in model container [2024-11-18 18:47:22,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:21" (1/1) ... [2024-11-18 18:47:22,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:47:22,212 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_codestructure_steplocals_file-34.i[917,930] [2024-11-18 18:47:22,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:47:22,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:47:22,299 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_codestructure_steplocals_file-34.i[917,930] [2024-11-18 18:47:22,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:47:22,343 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:47:22,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22 WrapperNode [2024-11-18 18:47:22,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:47:22,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:47:22,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:47:22,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:47:22,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,426 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 202 [2024-11-18 18:47:22,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:47:22,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:47:22,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:47:22,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:47:22,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,473 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 18:47:22,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:47:22,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:47:22,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:47:22,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:47:22,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (1/1) ... [2024-11-18 18:47:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:47:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:47:22,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 18:47:22,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 18:47:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:47:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 18:47:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 18:47:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:47:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:47:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:47:22,741 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:47:22,744 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:47:23,356 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-18 18:47:23,357 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:47:23,373 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:47:23,375 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:47:23,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:23 BoogieIcfgContainer [2024-11-18 18:47:23,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:47:23,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:47:23,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:47:23,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:47:23,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:47:21" (1/3) ... [2024-11-18 18:47:23,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768ea5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:23, skipping insertion in model container [2024-11-18 18:47:23,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:22" (2/3) ... [2024-11-18 18:47:23,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768ea5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:23, skipping insertion in model container [2024-11-18 18:47:23,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:23" (3/3) ... [2024-11-18 18:47:23,387 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-34.i [2024-11-18 18:47:23,407 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:47:23,407 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:47:23,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:47:23,486 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;@e72b365, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:47:23,486 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:47:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 64 states have (on average 1.421875) internal successors, (91), 65 states have internal predecessors, (91), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 18:47:23,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:23,506 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:23,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:23,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2122244211, now seen corresponding path program 1 times [2024-11-18 18:47:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:23,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562184523] [2024-11-18 18:47:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:24,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562184523] [2024-11-18 18:47:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562184523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:24,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:24,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 18:47:24,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093591169] [2024-11-18 18:47:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:24,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 18:47:24,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 18:47:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 18:47:24,141 INFO L87 Difference]: Start difference. First operand has 94 states, 64 states have (on average 1.421875) internal successors, (91), 65 states have internal predecessors, (91), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:24,230 INFO L93 Difference]: Finished difference Result 222 states and 375 transitions. [2024-11-18 18:47:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 18:47:24,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2024-11-18 18:47:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:24,249 INFO L225 Difference]: With dead ends: 222 [2024-11-18 18:47:24,250 INFO L226 Difference]: Without dead ends: 131 [2024-11-18 18:47:24,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 18:47:24,259 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 55 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:24,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 268 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:47:24,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-18 18:47:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 96. [2024-11-18 18:47:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 147 transitions. [2024-11-18 18:47:24,323 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 147 transitions. Word has length 173 [2024-11-18 18:47:24,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:24,326 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 147 transitions. [2024-11-18 18:47:24,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 147 transitions. [2024-11-18 18:47:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 18:47:24,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:24,331 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:24,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:47:24,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:24,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 842380533, now seen corresponding path program 1 times [2024-11-18 18:47:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176799319] [2024-11-18 18:47:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:26,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176799319] [2024-11-18 18:47:26,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176799319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:26,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:47:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626491354] [2024-11-18 18:47:26,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:26,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:47:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:47:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:47:26,492 INFO L87 Difference]: Start difference. First operand 96 states and 147 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:27,004 INFO L93 Difference]: Finished difference Result 298 states and 449 transitions. [2024-11-18 18:47:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:47:27,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2024-11-18 18:47:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:27,008 INFO L225 Difference]: With dead ends: 298 [2024-11-18 18:47:27,008 INFO L226 Difference]: Without dead ends: 205 [2024-11-18 18:47:27,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:47:27,014 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 243 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:27,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 487 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:47:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-18 18:47:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 117. [2024-11-18 18:47:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 179 transitions. [2024-11-18 18:47:27,042 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 179 transitions. Word has length 173 [2024-11-18 18:47:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:27,043 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 179 transitions. [2024-11-18 18:47:27,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 179 transitions. [2024-11-18 18:47:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 18:47:27,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:27,047 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:27,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:47:27,047 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:27,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash -178687821, now seen corresponding path program 1 times [2024-11-18 18:47:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:27,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117706886] [2024-11-18 18:47:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117706886] [2024-11-18 18:47:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117706886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:31,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:31,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 18:47:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323269540] [2024-11-18 18:47:31,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:31,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 18:47:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 18:47:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:47:31,006 INFO L87 Difference]: Start difference. First operand 117 states and 179 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:34,219 INFO L93 Difference]: Finished difference Result 433 states and 656 transitions. [2024-11-18 18:47:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:47:34,221 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2024-11-18 18:47:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:34,224 INFO L225 Difference]: With dead ends: 433 [2024-11-18 18:47:34,225 INFO L226 Difference]: Without dead ends: 319 [2024-11-18 18:47:34,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-11-18 18:47:34,227 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 288 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:34,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 776 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 18:47:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-18 18:47:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 252. [2024-11-18 18:47:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 195 states have (on average 1.4256410256410257) internal successors, (278), 195 states have internal predecessors, (278), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 18:47:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 386 transitions. [2024-11-18 18:47:34,260 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 386 transitions. Word has length 173 [2024-11-18 18:47:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:34,261 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 386 transitions. [2024-11-18 18:47:34,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 386 transitions. [2024-11-18 18:47:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 18:47:34,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:34,264 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:34,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:47:34,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:34,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash -988034447, now seen corresponding path program 1 times [2024-11-18 18:47:34,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:34,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143518992] [2024-11-18 18:47:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:34,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143518992] [2024-11-18 18:47:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143518992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:47:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532645877] [2024-11-18 18:47:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:36,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:47:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:47:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:47:36,131 INFO L87 Difference]: Start difference. First operand 252 states and 386 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:37,011 INFO L93 Difference]: Finished difference Result 614 states and 932 transitions. [2024-11-18 18:47:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:47:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2024-11-18 18:47:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:37,015 INFO L225 Difference]: With dead ends: 614 [2024-11-18 18:47:37,016 INFO L226 Difference]: Without dead ends: 365 [2024-11-18 18:47:37,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:47:37,018 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 169 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:37,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 641 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:47:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-18 18:47:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 142. [2024-11-18 18:47:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.424778761061947) internal successors, (161), 113 states have internal predecessors, (161), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 215 transitions. [2024-11-18 18:47:37,043 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 215 transitions. Word has length 173 [2024-11-18 18:47:37,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:37,044 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 215 transitions. [2024-11-18 18:47:37,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:37,045 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 215 transitions. [2024-11-18 18:47:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:37,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:37,047 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:37,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:47:37,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:37,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash 921830182, now seen corresponding path program 1 times [2024-11-18 18:47:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:37,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512159667] [2024-11-18 18:47:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:39,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:39,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512159667] [2024-11-18 18:47:39,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512159667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:39,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:39,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:47:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044133781] [2024-11-18 18:47:39,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:39,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:47:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:47:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:47:39,477 INFO L87 Difference]: Start difference. First operand 142 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:40,368 INFO L93 Difference]: Finished difference Result 411 states and 613 transitions. [2024-11-18 18:47:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:47:40,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:40,373 INFO L225 Difference]: With dead ends: 411 [2024-11-18 18:47:40,374 INFO L226 Difference]: Without dead ends: 272 [2024-11-18 18:47:40,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:47:40,377 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 262 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:40,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 687 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:47:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-18 18:47:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 158. [2024-11-18 18:47:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 129 states have (on average 1.441860465116279) internal successors, (186), 129 states have internal predecessors, (186), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 240 transitions. [2024-11-18 18:47:40,387 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 240 transitions. Word has length 174 [2024-11-18 18:47:40,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:40,388 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 240 transitions. [2024-11-18 18:47:40,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 240 transitions. [2024-11-18 18:47:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:40,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:40,390 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:40,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:47:40,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:40,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 112483556, now seen corresponding path program 1 times [2024-11-18 18:47:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:40,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106315713] [2024-11-18 18:47:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:40,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:43,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106315713] [2024-11-18 18:47:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106315713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:43,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:43,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:47:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136956099] [2024-11-18 18:47:43,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:43,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:47:43,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:47:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:47:43,008 INFO L87 Difference]: Start difference. First operand 158 states and 240 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:44,722 INFO L93 Difference]: Finished difference Result 469 states and 697 transitions. [2024-11-18 18:47:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:47:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:44,728 INFO L225 Difference]: With dead ends: 469 [2024-11-18 18:47:44,728 INFO L226 Difference]: Without dead ends: 314 [2024-11-18 18:47:44,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:47:44,730 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 392 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:44,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 604 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 18:47:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-18 18:47:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 144. [2024-11-18 18:47:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 115 states have (on average 1.4260869565217391) internal successors, (164), 115 states have internal predecessors, (164), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 218 transitions. [2024-11-18 18:47:44,746 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 218 transitions. Word has length 174 [2024-11-18 18:47:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:44,747 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 218 transitions. [2024-11-18 18:47:44,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 218 transitions. [2024-11-18 18:47:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:44,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:44,750 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:44,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:47:44,750 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:44,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash -99238172, now seen corresponding path program 1 times [2024-11-18 18:47:44,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:44,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946873197] [2024-11-18 18:47:44,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:46,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:46,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946873197] [2024-11-18 18:47:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946873197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:46,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:46,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 18:47:46,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494119133] [2024-11-18 18:47:46,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:46,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 18:47:46,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 18:47:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:47:46,915 INFO L87 Difference]: Start difference. First operand 144 states and 218 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:47,616 INFO L93 Difference]: Finished difference Result 400 states and 598 transitions. [2024-11-18 18:47:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:47:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:47,619 INFO L225 Difference]: With dead ends: 400 [2024-11-18 18:47:47,620 INFO L226 Difference]: Without dead ends: 259 [2024-11-18 18:47:47,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:47:47,622 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 389 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:47,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 665 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:47:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-18 18:47:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 158. [2024-11-18 18:47:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 129 states have (on average 1.441860465116279) internal successors, (186), 129 states have internal predecessors, (186), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 240 transitions. [2024-11-18 18:47:47,642 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 240 transitions. Word has length 174 [2024-11-18 18:47:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:47,643 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 240 transitions. [2024-11-18 18:47:47,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 240 transitions. [2024-11-18 18:47:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:47,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:47,646 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:47,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:47:47,647 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:47,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -908584798, now seen corresponding path program 1 times [2024-11-18 18:47:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:47,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024960227] [2024-11-18 18:47:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024960227] [2024-11-18 18:47:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024960227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:51,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:51,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:47:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111450620] [2024-11-18 18:47:51,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:51,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:47:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:51,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:47:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:47:51,395 INFO L87 Difference]: Start difference. First operand 158 states and 240 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:53,373 INFO L93 Difference]: Finished difference Result 565 states and 843 transitions. [2024-11-18 18:47:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:47:53,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:53,378 INFO L225 Difference]: With dead ends: 565 [2024-11-18 18:47:53,378 INFO L226 Difference]: Without dead ends: 410 [2024-11-18 18:47:53,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:47:53,380 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 380 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:53,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 726 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 18:47:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-18 18:47:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 156. [2024-11-18 18:47:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 127 states have internal predecessors, (184), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 18:47:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 238 transitions. [2024-11-18 18:47:53,389 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 238 transitions. Word has length 174 [2024-11-18 18:47:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:53,390 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 238 transitions. [2024-11-18 18:47:53,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 238 transitions. [2024-11-18 18:47:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:53,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:53,393 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:53,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 18:47:53,393 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:53,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1072314524, now seen corresponding path program 1 times [2024-11-18 18:47:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:53,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369972896] [2024-11-18 18:47:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369972896] [2024-11-18 18:47:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369972896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:53,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:47:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556888424] [2024-11-18 18:47:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:53,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:47:53,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:47:53,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:47:53,663 INFO L87 Difference]: Start difference. First operand 156 states and 238 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:53,910 INFO L93 Difference]: Finished difference Result 360 states and 547 transitions. [2024-11-18 18:47:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 18:47:53,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:53,912 INFO L225 Difference]: With dead ends: 360 [2024-11-18 18:47:53,912 INFO L226 Difference]: Without dead ends: 207 [2024-11-18 18:47:53,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:47:53,914 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 71 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:53,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 629 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:47:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-18 18:47:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2024-11-18 18:47:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 170 states have (on average 1.4529411764705882) internal successors, (247), 171 states have internal predecessors, (247), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 18:47:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 309 transitions. [2024-11-18 18:47:53,930 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 309 transitions. Word has length 174 [2024-11-18 18:47:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:53,933 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 309 transitions. [2024-11-18 18:47:53,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 309 transitions. [2024-11-18 18:47:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:53,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:53,935 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:53,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 18:47:53,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:53,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash -371249946, now seen corresponding path program 1 times [2024-11-18 18:47:53,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:53,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299692840] [2024-11-18 18:47:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:53,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:54,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:54,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299692840] [2024-11-18 18:47:54,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299692840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:54,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:54,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:47:54,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322067828] [2024-11-18 18:47:54,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:54,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:47:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:47:54,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:47:54,179 INFO L87 Difference]: Start difference. First operand 204 states and 309 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:54,343 INFO L93 Difference]: Finished difference Result 406 states and 615 transitions. [2024-11-18 18:47:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:47:54,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:54,348 INFO L225 Difference]: With dead ends: 406 [2024-11-18 18:47:54,348 INFO L226 Difference]: Without dead ends: 205 [2024-11-18 18:47:54,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:47:54,349 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:54,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 373 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:47:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-18 18:47:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2024-11-18 18:47:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 168 states have (on average 1.4523809523809523) internal successors, (244), 169 states have internal predecessors, (244), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 18:47:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2024-11-18 18:47:54,360 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 174 [2024-11-18 18:47:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:54,360 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2024-11-18 18:47:54,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2024-11-18 18:47:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:54,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:54,363 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:54,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:47:54,363 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:54,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash 103061529, now seen corresponding path program 1 times [2024-11-18 18:47:54,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:54,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480274168] [2024-11-18 18:47:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480274168] [2024-11-18 18:47:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480274168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:47:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13273093] [2024-11-18 18:47:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:54,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:47:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:47:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:47:54,995 INFO L87 Difference]: Start difference. First operand 202 states and 306 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:55,309 INFO L93 Difference]: Finished difference Result 604 states and 909 transitions. [2024-11-18 18:47:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:47:55,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:55,314 INFO L225 Difference]: With dead ends: 604 [2024-11-18 18:47:55,314 INFO L226 Difference]: Without dead ends: 405 [2024-11-18 18:47:55,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:47:55,315 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 199 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:55,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 654 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:47:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-18 18:47:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 230. [2024-11-18 18:47:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 196 states have (on average 1.4489795918367347) internal successors, (284), 197 states have internal predecessors, (284), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 18:47:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 346 transitions. [2024-11-18 18:47:55,335 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 346 transitions. Word has length 174 [2024-11-18 18:47:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:55,338 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 346 transitions. [2024-11-18 18:47:55,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 346 transitions. [2024-11-18 18:47:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:55,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:55,340 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:55,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:47:55,341 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:55,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:55,342 INFO L85 PathProgramCache]: Analyzing trace with hash -918006825, now seen corresponding path program 1 times [2024-11-18 18:47:55,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:55,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913669163] [2024-11-18 18:47:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:56,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:56,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913669163] [2024-11-18 18:47:56,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913669163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:56,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:56,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:47:56,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411149825] [2024-11-18 18:47:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:56,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:47:56,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:47:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:47:56,050 INFO L87 Difference]: Start difference. First operand 230 states and 346 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:56,416 INFO L93 Difference]: Finished difference Result 602 states and 900 transitions. [2024-11-18 18:47:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:47:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:56,419 INFO L225 Difference]: With dead ends: 602 [2024-11-18 18:47:56,419 INFO L226 Difference]: Without dead ends: 375 [2024-11-18 18:47:56,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:47:56,421 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 195 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:56,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 524 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:47:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-18 18:47:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 230. [2024-11-18 18:47:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 196 states have (on average 1.4489795918367347) internal successors, (284), 197 states have internal predecessors, (284), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 18:47:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 346 transitions. [2024-11-18 18:47:56,434 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 346 transitions. Word has length 174 [2024-11-18 18:47:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:56,435 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 346 transitions. [2024-11-18 18:47:56,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 346 transitions. [2024-11-18 18:47:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:56,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:56,437 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:56,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 18:47:56,437 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:56,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 920709979, now seen corresponding path program 1 times [2024-11-18 18:47:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537293662] [2024-11-18 18:47:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:47:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:47:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:47:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537293662] [2024-11-18 18:47:57,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537293662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:47:57,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:47:57,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:47:57,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842413361] [2024-11-18 18:47:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:47:57,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:47:57,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:47:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:47:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:47:57,656 INFO L87 Difference]: Start difference. First operand 230 states and 346 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:47:58,197 INFO L93 Difference]: Finished difference Result 672 states and 1002 transitions. [2024-11-18 18:47:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:47:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:47:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:47:58,201 INFO L225 Difference]: With dead ends: 672 [2024-11-18 18:47:58,201 INFO L226 Difference]: Without dead ends: 445 [2024-11-18 18:47:58,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:47:58,203 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 306 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:47:58,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 496 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:47:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-18 18:47:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 232. [2024-11-18 18:47:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 198 states have (on average 1.4494949494949494) internal successors, (287), 199 states have internal predecessors, (287), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 18:47:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 349 transitions. [2024-11-18 18:47:58,215 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 349 transitions. Word has length 174 [2024-11-18 18:47:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:47:58,216 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 349 transitions. [2024-11-18 18:47:58,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:47:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 349 transitions. [2024-11-18 18:47:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:47:58,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:47:58,217 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:47:58,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:47:58,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:47:58,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:47:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash -100358375, now seen corresponding path program 1 times [2024-11-18 18:47:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:47:58,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329172827] [2024-11-18 18:47:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:47:58,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:47:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:01,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:01,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329172827] [2024-11-18 18:48:01,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329172827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:01,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:01,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 18:48:01,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780337898] [2024-11-18 18:48:01,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:01,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 18:48:01,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:01,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 18:48:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:48:01,293 INFO L87 Difference]: Start difference. First operand 232 states and 349 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:05,691 INFO L93 Difference]: Finished difference Result 919 states and 1354 transitions. [2024-11-18 18:48:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 18:48:05,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-18 18:48:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:05,697 INFO L225 Difference]: With dead ends: 919 [2024-11-18 18:48:05,697 INFO L226 Difference]: Without dead ends: 690 [2024-11-18 18:48:05,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2024-11-18 18:48:05,699 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 824 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:05,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 787 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 18:48:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-18 18:48:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 380. [2024-11-18 18:48:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 313 states have (on average 1.4313099041533546) internal successors, (448), 315 states have internal predecessors, (448), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 18:48:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 572 transitions. [2024-11-18 18:48:05,732 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 572 transitions. Word has length 174 [2024-11-18 18:48:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:05,733 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 572 transitions. [2024-11-18 18:48:05,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 572 transitions. [2024-11-18 18:48:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:48:05,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:05,735 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:05,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 18:48:05,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:05,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash -909705001, now seen corresponding path program 1 times [2024-11-18 18:48:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:05,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202901881] [2024-11-18 18:48:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:09,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202901881] [2024-11-18 18:48:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202901881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:09,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 18:48:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700296894] [2024-11-18 18:48:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:09,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 18:48:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 18:48:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:48:09,797 INFO L87 Difference]: Start difference. First operand 380 states and 572 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 18:48:13,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:13,818 INFO L93 Difference]: Finished difference Result 889 states and 1331 transitions. [2024-11-18 18:48:13,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:48:13,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2024-11-18 18:48:13,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:13,822 INFO L225 Difference]: With dead ends: 889 [2024-11-18 18:48:13,822 INFO L226 Difference]: Without dead ends: 523 [2024-11-18 18:48:13,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2024-11-18 18:48:13,824 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 526 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:13,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 955 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 18:48:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-18 18:48:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 382. [2024-11-18 18:48:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 315 states have (on average 1.4253968253968254) internal successors, (449), 317 states have internal predecessors, (449), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 18:48:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 573 transitions. [2024-11-18 18:48:13,845 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 573 transitions. Word has length 174 [2024-11-18 18:48:13,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:13,846 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 573 transitions. [2024-11-18 18:48:13,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 18:48:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 573 transitions. [2024-11-18 18:48:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:48:13,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:13,848 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:13,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 18:48:13,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:13,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1960065966, now seen corresponding path program 1 times [2024-11-18 18:48:13,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:13,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671592244] [2024-11-18 18:48:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671592244] [2024-11-18 18:48:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671592244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:13,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:13,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:48:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087967460] [2024-11-18 18:48:13,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:13,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:48:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:48:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:48:13,968 INFO L87 Difference]: Start difference. First operand 382 states and 573 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:14,082 INFO L93 Difference]: Finished difference Result 920 states and 1385 transitions. [2024-11-18 18:48:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:48:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 18:48:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:14,088 INFO L225 Difference]: With dead ends: 920 [2024-11-18 18:48:14,088 INFO L226 Difference]: Without dead ends: 552 [2024-11-18 18:48:14,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:48:14,090 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 77 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:14,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 383 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:48:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-18 18:48:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 497. [2024-11-18 18:48:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 399 states have (on average 1.3934837092731829) internal successors, (556), 404 states have internal predecessors, (556), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 18:48:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 736 transitions. [2024-11-18 18:48:14,123 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 736 transitions. Word has length 175 [2024-11-18 18:48:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:14,124 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 736 transitions. [2024-11-18 18:48:14,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 736 transitions. [2024-11-18 18:48:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:48:14,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:14,126 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:14,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 18:48:14,127 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:14,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1251315180, now seen corresponding path program 1 times [2024-11-18 18:48:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297271171] [2024-11-18 18:48:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:14,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:14,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:14,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297271171] [2024-11-18 18:48:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297271171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:14,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:14,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:48:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127984948] [2024-11-18 18:48:14,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:14,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:48:14,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:48:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:48:14,241 INFO L87 Difference]: Start difference. First operand 497 states and 736 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:14,387 INFO L93 Difference]: Finished difference Result 820 states and 1211 transitions. [2024-11-18 18:48:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:48:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 18:48:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:14,391 INFO L225 Difference]: With dead ends: 820 [2024-11-18 18:48:14,391 INFO L226 Difference]: Without dead ends: 502 [2024-11-18 18:48:14,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:48:14,393 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 66 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:14,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 398 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:48:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-18 18:48:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 495. [2024-11-18 18:48:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 397 states have (on average 1.3904282115869018) internal successors, (552), 402 states have internal predecessors, (552), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 18:48:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 732 transitions. [2024-11-18 18:48:14,420 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 732 transitions. Word has length 175 [2024-11-18 18:48:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:14,421 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 732 transitions. [2024-11-18 18:48:14,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 732 transitions. [2024-11-18 18:48:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:48:14,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:14,423 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:14,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 18:48:14,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:14,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash -686128964, now seen corresponding path program 1 times [2024-11-18 18:48:14,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:14,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388263604] [2024-11-18 18:48:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:17,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:17,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388263604] [2024-11-18 18:48:17,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388263604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:17,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:17,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 18:48:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443284600] [2024-11-18 18:48:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:17,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 18:48:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 18:48:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:48:17,304 INFO L87 Difference]: Start difference. First operand 495 states and 732 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:20,875 INFO L93 Difference]: Finished difference Result 1269 states and 1837 transitions. [2024-11-18 18:48:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:48:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 18:48:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:20,881 INFO L225 Difference]: With dead ends: 1269 [2024-11-18 18:48:20,881 INFO L226 Difference]: Without dead ends: 953 [2024-11-18 18:48:20,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-18 18:48:20,883 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 479 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:20,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 918 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 18:48:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-11-18 18:48:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 504. [2024-11-18 18:48:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 406 states have (on average 1.3891625615763548) internal successors, (564), 411 states have internal predecessors, (564), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 18:48:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 744 transitions. [2024-11-18 18:48:20,912 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 744 transitions. Word has length 175 [2024-11-18 18:48:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:20,913 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 744 transitions. [2024-11-18 18:48:20,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 744 transitions. [2024-11-18 18:48:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:48:20,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:20,915 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:20,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 18:48:20,915 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:20,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1495475590, now seen corresponding path program 1 times [2024-11-18 18:48:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825391708] [2024-11-18 18:48:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:22,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825391708] [2024-11-18 18:48:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825391708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:22,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:48:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450017348] [2024-11-18 18:48:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:22,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:48:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:48:22,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:48:22,787 INFO L87 Difference]: Start difference. First operand 504 states and 744 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:23,617 INFO L93 Difference]: Finished difference Result 1184 states and 1728 transitions. [2024-11-18 18:48:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:48:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 18:48:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:23,622 INFO L225 Difference]: With dead ends: 1184 [2024-11-18 18:48:23,623 INFO L226 Difference]: Without dead ends: 859 [2024-11-18 18:48:23,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:48:23,624 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 328 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:23,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 656 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:48:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-18 18:48:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 476. [2024-11-18 18:48:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 378 states have (on average 1.3783068783068784) internal successors, (521), 383 states have internal predecessors, (521), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 18:48:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 701 transitions. [2024-11-18 18:48:23,670 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 701 transitions. Word has length 175 [2024-11-18 18:48:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:23,671 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 701 transitions. [2024-11-18 18:48:23,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 701 transitions. [2024-11-18 18:48:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:48:23,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:23,673 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:23,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 18:48:23,673 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:23,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1707197318, now seen corresponding path program 1 times [2024-11-18 18:48:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908191348] [2024-11-18 18:48:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:26,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908191348] [2024-11-18 18:48:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908191348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:26,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:26,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 18:48:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622370381] [2024-11-18 18:48:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:26,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 18:48:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 18:48:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:48:26,466 INFO L87 Difference]: Start difference. First operand 476 states and 701 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:28,436 INFO L93 Difference]: Finished difference Result 1093 states and 1592 transitions. [2024-11-18 18:48:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:48:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 18:48:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:28,441 INFO L225 Difference]: With dead ends: 1093 [2024-11-18 18:48:28,441 INFO L226 Difference]: Without dead ends: 796 [2024-11-18 18:48:28,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:48:28,443 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 252 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:28,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 789 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 18:48:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-18 18:48:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 492. [2024-11-18 18:48:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 394 states have (on average 1.380710659898477) internal successors, (544), 399 states have internal predecessors, (544), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 18:48:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 724 transitions. [2024-11-18 18:48:28,475 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 724 transitions. Word has length 175 [2024-11-18 18:48:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:28,475 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 724 transitions. [2024-11-18 18:48:28,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 724 transitions. [2024-11-18 18:48:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:48:28,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:28,477 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:28,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 18:48:28,477 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:28,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1778423352, now seen corresponding path program 1 times [2024-11-18 18:48:28,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:28,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590355391] [2024-11-18 18:48:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:28,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:48:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 18:48:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:48:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590355391] [2024-11-18 18:48:31,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590355391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:48:31,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:48:31,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:48:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147917369] [2024-11-18 18:48:31,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:48:31,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:48:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:48:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:48:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:48:31,664 INFO L87 Difference]: Start difference. First operand 492 states and 724 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:32,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:48:32,542 INFO L93 Difference]: Finished difference Result 1066 states and 1558 transitions. [2024-11-18 18:48:32,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:48:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-18 18:48:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:48:32,548 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 18:48:32,548 INFO L226 Difference]: Without dead ends: 753 [2024-11-18 18:48:32,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:48:32,551 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 295 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:48:32,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 678 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:48:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-18 18:48:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 476. [2024-11-18 18:48:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 378 states have (on average 1.3783068783068784) internal successors, (521), 383 states have internal predecessors, (521), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 18:48:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 701 transitions. [2024-11-18 18:48:32,579 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 701 transitions. Word has length 175 [2024-11-18 18:48:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:48:32,579 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 701 transitions. [2024-11-18 18:48:32,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 18:48:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 701 transitions. [2024-11-18 18:48:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 18:48:32,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:48:32,581 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:48:32,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 18:48:32,582 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:48:32,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:48:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash 848897420, now seen corresponding path program 1 times [2024-11-18 18:48:32,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:48:32,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135492289] [2024-11-18 18:48:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:48:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:48:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat