./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.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_fillercode_fillercodesize_ps-cn-100_file-86.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 4494aec82e3354bd32c6c13af5c36deffc5336d06a7a21928d54585f4657c423 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:15:52,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:15:52,320 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:15:52,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:15:52,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:15:52,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:15:52,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:15:52,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:15:52,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:15:52,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:15:52,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:15:52,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:15:52,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:15:52,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:15:52,370 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:15:52,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:15:52,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:15:52,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:15:52,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:15:52,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:15:52,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:15:52,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:15:52,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:15:52,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:15:52,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:15:52,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:15:52,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:15:52,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:15:52,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:15:52,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:15:52,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:15:52,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:15:52,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:15:52,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:15:52,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:15:52,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:15:52,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:15:52,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:15:52,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:15:52,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:15:52,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:15:52,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:15:52,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4494aec82e3354bd32c6c13af5c36deffc5336d06a7a21928d54585f4657c423 [2024-11-18 19:15:52,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:15:52,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:15:52,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:15:52,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:15:52,703 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:15:52,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i [2024-11-18 19:15:54,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:15:54,763 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:15:54,764 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i [2024-11-18 19:15:54,780 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc5adea1/5be3348c12b94dc4bb51b094bb639a74/FLAG35e0415be [2024-11-18 19:15:54,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc5adea1/5be3348c12b94dc4bb51b094bb639a74 [2024-11-18 19:15:54,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:15:54,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:15:54,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:15:54,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:15:54,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:15:54,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:15:54" (1/1) ... [2024-11-18 19:15:54,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d21dfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:54, skipping insertion in model container [2024-11-18 19:15:54,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:15:54" (1/1) ... [2024-11-18 19:15:54,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:15:55,159 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i[916,929] [2024-11-18 19:15:55,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:15:55,418 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:15:55,433 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i[916,929] [2024-11-18 19:15:55,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:15:55,569 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:15:55,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55 WrapperNode [2024-11-18 19:15:55,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:15:55,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:15:55,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:15:55,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:15:55,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,759 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 309 [2024-11-18 19:15:55,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:15:55,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:15:55,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:15:55,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:15:55,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,848 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 19:15:55,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:15:55,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:15:55,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:15:55,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:15:55,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (1/1) ... [2024-11-18 19:15:55,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:15:55,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:15:56,004 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 19:15:56,007 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 19:15:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:15:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:15:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:15:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:15:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:15:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:15:56,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:15:56,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:15:56,718 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-18 19:15:56,718 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:15:56,750 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:15:56,751 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:15:56,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:15:56 BoogieIcfgContainer [2024-11-18 19:15:56,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:15:56,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:15:56,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:15:56,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:15:56,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:15:54" (1/3) ... [2024-11-18 19:15:56,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4565c046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:15:56, skipping insertion in model container [2024-11-18 19:15:56,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:15:55" (2/3) ... [2024-11-18 19:15:56,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4565c046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:15:56, skipping insertion in model container [2024-11-18 19:15:56,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:15:56" (3/3) ... [2024-11-18 19:15:56,760 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-86.i [2024-11-18 19:15:56,779 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:15:56,780 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:15:56,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:15:56,852 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;@4db6f08b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:15:56,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:15:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 88 states have (on average 1.5) internal successors, (132), 89 states have internal predecessors, (132), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 19:15:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 19:15:56,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:15:56,885 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:56,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:15:56,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:15:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2053616696, now seen corresponding path program 1 times [2024-11-18 19:15:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:15:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290064858] [2024-11-18 19:15:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:15:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:15:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:15:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-18 19:15:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:15:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290064858] [2024-11-18 19:15:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290064858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:15:57,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350166673] [2024-11-18 19:15:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:15:57,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:15:57,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:15:57,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:15:57,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:15:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:15:58,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:15:58,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:15:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-18 19:15:58,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:15:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350166673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:15:58,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:15:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:15:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781484265] [2024-11-18 19:15:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:15:58,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:15:58,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:15:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:15:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:15:58,160 INFO L87 Difference]: Start difference. First operand has 134 states, 88 states have (on average 1.5) internal successors, (132), 89 states have internal predecessors, (132), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 19:15:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:15:58,190 INFO L93 Difference]: Finished difference Result 261 states and 473 transitions. [2024-11-18 19:15:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:15:58,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 270 [2024-11-18 19:15:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:15:58,200 INFO L225 Difference]: With dead ends: 261 [2024-11-18 19:15:58,200 INFO L226 Difference]: Without dead ends: 130 [2024-11-18 19:15:58,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:15:58,207 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:15:58,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:15:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-18 19:15:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-18 19:15:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 19:15:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 208 transitions. [2024-11-18 19:15:58,274 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 208 transitions. Word has length 270 [2024-11-18 19:15:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:15:58,274 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 208 transitions. [2024-11-18 19:15:58,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 19:15:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 208 transitions. [2024-11-18 19:15:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 19:15:58,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:15:58,283 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:58,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:15:58,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 19:15:58,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:15:58,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:15:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash 794028050, now seen corresponding path program 1 times [2024-11-18 19:15:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:15:58,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049505175] [2024-11-18 19:15:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:15:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:15:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:15:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:15:59,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:15:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049505175] [2024-11-18 19:15:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049505175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:15:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:15:59,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:15:59,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604562227] [2024-11-18 19:15:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:15:59,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:15:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:15:59,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:15:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:15:59,208 INFO L87 Difference]: Start difference. First operand 130 states and 208 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:15:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:15:59,895 INFO L93 Difference]: Finished difference Result 385 states and 619 transitions. [2024-11-18 19:15:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:15:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 270 [2024-11-18 19:15:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:15:59,910 INFO L225 Difference]: With dead ends: 385 [2024-11-18 19:15:59,910 INFO L226 Difference]: Without dead ends: 258 [2024-11-18 19:15:59,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:15:59,915 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 192 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:15:59,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 715 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:15:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-18 19:15:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 238. [2024-11-18 19:15:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 149 states have (on average 1.4228187919463087) internal successors, (212), 149 states have internal predecessors, (212), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:15:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 384 transitions. [2024-11-18 19:15:59,994 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 384 transitions. Word has length 270 [2024-11-18 19:15:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:15:59,995 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 384 transitions. [2024-11-18 19:15:59,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:15:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 384 transitions. [2024-11-18 19:16:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 19:16:00,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:00,005 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:00,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:16:00,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:00,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash -217089200, now seen corresponding path program 1 times [2024-11-18 19:16:00,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:00,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557793134] [2024-11-18 19:16:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557793134] [2024-11-18 19:16:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557793134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:08,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:08,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 19:16:08,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011314657] [2024-11-18 19:16:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:08,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 19:16:08,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:08,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 19:16:08,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-18 19:16:08,393 INFO L87 Difference]: Start difference. First operand 238 states and 384 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:11,500 INFO L93 Difference]: Finished difference Result 432 states and 680 transitions. [2024-11-18 19:16:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 19:16:11,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 270 [2024-11-18 19:16:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:11,505 INFO L225 Difference]: With dead ends: 432 [2024-11-18 19:16:11,505 INFO L226 Difference]: Without dead ends: 305 [2024-11-18 19:16:11,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-18 19:16:11,507 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 339 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:11,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1545 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 19:16:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-18 19:16:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 255. [2024-11-18 19:16:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 166 states have (on average 1.4156626506024097) internal successors, (235), 166 states have internal predecessors, (235), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:16:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 407 transitions. [2024-11-18 19:16:11,530 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 407 transitions. Word has length 270 [2024-11-18 19:16:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:11,531 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 407 transitions. [2024-11-18 19:16:11,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 407 transitions. [2024-11-18 19:16:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 19:16:11,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:11,533 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:11,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:16:11,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:11,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 483975378, now seen corresponding path program 1 times [2024-11-18 19:16:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487478154] [2024-11-18 19:16:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:11,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487478154] [2024-11-18 19:16:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487478154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:11,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:11,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:16:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049844207] [2024-11-18 19:16:11,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:11,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:16:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:11,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:16:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:16:11,618 INFO L87 Difference]: Start difference. First operand 255 states and 407 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:11,682 INFO L93 Difference]: Finished difference Result 508 states and 815 transitions. [2024-11-18 19:16:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:16:11,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 270 [2024-11-18 19:16:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:11,696 INFO L225 Difference]: With dead ends: 508 [2024-11-18 19:16:11,696 INFO L226 Difference]: Without dead ends: 381 [2024-11-18 19:16:11,697 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 19:16:11,697 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 200 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:11,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 416 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:16:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-18 19:16:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2024-11-18 19:16:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 246 states have internal predecessors, (348), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:16:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 606 transitions. [2024-11-18 19:16:11,756 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 606 transitions. Word has length 270 [2024-11-18 19:16:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:11,760 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 606 transitions. [2024-11-18 19:16:11,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 606 transitions. [2024-11-18 19:16:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 19:16:11,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:11,763 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:11,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:16:11,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:11,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:11,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1913671411, now seen corresponding path program 1 times [2024-11-18 19:16:11,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:11,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914673400] [2024-11-18 19:16:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:11,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:16,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:16,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914673400] [2024-11-18 19:16:16,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914673400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:16,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:16,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 19:16:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716630249] [2024-11-18 19:16:16,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:16,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 19:16:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 19:16:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-18 19:16:16,696 INFO L87 Difference]: Start difference. First operand 379 states and 606 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:18,151 INFO L93 Difference]: Finished difference Result 429 states and 664 transitions. [2024-11-18 19:16:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 19:16:18,153 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-18 19:16:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:18,156 INFO L225 Difference]: With dead ends: 429 [2024-11-18 19:16:18,156 INFO L226 Difference]: Without dead ends: 427 [2024-11-18 19:16:18,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2024-11-18 19:16:18,159 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 461 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:18,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1233 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 19:16:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-18 19:16:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 380. [2024-11-18 19:16:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 247 states have (on average 1.4129554655870444) internal successors, (349), 247 states have internal predecessors, (349), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:16:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 607 transitions. [2024-11-18 19:16:18,205 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 607 transitions. Word has length 271 [2024-11-18 19:16:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:18,206 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 607 transitions. [2024-11-18 19:16:18,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 607 transitions. [2024-11-18 19:16:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 19:16:18,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:18,209 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:18,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:16:18,210 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:18,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1701513997, now seen corresponding path program 1 times [2024-11-18 19:16:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981471401] [2024-11-18 19:16:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981471401] [2024-11-18 19:16:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981471401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:18,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:16:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159812020] [2024-11-18 19:16:18,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:18,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:16:18,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:16:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:16:18,541 INFO L87 Difference]: Start difference. First operand 380 states and 607 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:18,568 INFO L93 Difference]: Finished difference Result 642 states and 1026 transitions. [2024-11-18 19:16:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:16:18,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-18 19:16:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:18,574 INFO L225 Difference]: With dead ends: 642 [2024-11-18 19:16:18,574 INFO L226 Difference]: Without dead ends: 388 [2024-11-18 19:16:18,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:16:18,577 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 6 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:18,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:16:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-18 19:16:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 380. [2024-11-18 19:16:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 247 states have internal predecessors, (346), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:16:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 604 transitions. [2024-11-18 19:16:18,600 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 604 transitions. Word has length 271 [2024-11-18 19:16:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:18,600 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 604 transitions. [2024-11-18 19:16:18,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 604 transitions. [2024-11-18 19:16:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 19:16:18,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:18,603 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:18,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:16:18,603 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:18,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash -818445937, now seen corresponding path program 1 times [2024-11-18 19:16:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576519654] [2024-11-18 19:16:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576519654] [2024-11-18 19:16:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576519654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 19:16:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594478139] [2024-11-18 19:16:23,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:23,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 19:16:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:23,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 19:16:23,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-18 19:16:23,691 INFO L87 Difference]: Start difference. First operand 380 states and 604 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 19:16:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:29,266 INFO L93 Difference]: Finished difference Result 434 states and 664 transitions. [2024-11-18 19:16:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 19:16:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 271 [2024-11-18 19:16:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:29,273 INFO L225 Difference]: With dead ends: 434 [2024-11-18 19:16:29,275 INFO L226 Difference]: Without dead ends: 432 [2024-11-18 19:16:29,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=338, Invalid=1068, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 19:16:29,280 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 619 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:29,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1546 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 19:16:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-18 19:16:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 380. [2024-11-18 19:16:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 247 states have internal predecessors, (346), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:16:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 604 transitions. [2024-11-18 19:16:29,331 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 604 transitions. Word has length 271 [2024-11-18 19:16:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:29,336 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 604 transitions. [2024-11-18 19:16:29,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 19:16:29,336 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 604 transitions. [2024-11-18 19:16:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 19:16:29,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:29,339 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:29,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:16:29,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:29,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1262568660, now seen corresponding path program 1 times [2024-11-18 19:16:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962003300] [2024-11-18 19:16:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:36,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962003300] [2024-11-18 19:16:36,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962003300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:36,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:36,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 19:16:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731330836] [2024-11-18 19:16:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:36,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 19:16:36,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:36,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 19:16:36,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-18 19:16:36,943 INFO L87 Difference]: Start difference. First operand 380 states and 604 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:41,724 INFO L93 Difference]: Finished difference Result 450 states and 683 transitions. [2024-11-18 19:16:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 19:16:41,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-18 19:16:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:41,731 INFO L225 Difference]: With dead ends: 450 [2024-11-18 19:16:41,731 INFO L226 Difference]: Without dead ends: 448 [2024-11-18 19:16:41,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2024-11-18 19:16:41,734 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 437 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:41,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1214 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 19:16:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-18 19:16:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 390. [2024-11-18 19:16:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 257 states have (on average 1.3968871595330739) internal successors, (359), 257 states have internal predecessors, (359), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:16:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 617 transitions. [2024-11-18 19:16:41,786 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 617 transitions. Word has length 271 [2024-11-18 19:16:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:41,786 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 617 transitions. [2024-11-18 19:16:41,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 617 transitions. [2024-11-18 19:16:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 19:16:41,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:41,796 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:41,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:16:41,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:41,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash -582510290, now seen corresponding path program 1 times [2024-11-18 19:16:41,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66342529] [2024-11-18 19:16:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:16:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:16:48,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:16:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66342529] [2024-11-18 19:16:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66342529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:16:48,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:16:48,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 19:16:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127902521] [2024-11-18 19:16:48,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:16:48,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 19:16:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:16:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 19:16:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-18 19:16:48,660 INFO L87 Difference]: Start difference. First operand 390 states and 617 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:16:54,804 INFO L93 Difference]: Finished difference Result 444 states and 677 transitions. [2024-11-18 19:16:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 19:16:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-18 19:16:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:16:54,811 INFO L225 Difference]: With dead ends: 444 [2024-11-18 19:16:54,812 INFO L226 Difference]: Without dead ends: 442 [2024-11-18 19:16:54,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-18 19:16:54,813 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 322 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:16:54,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1568 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 19:16:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-18 19:16:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 390. [2024-11-18 19:16:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 257 states have (on average 1.3968871595330739) internal successors, (359), 257 states have internal predecessors, (359), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:16:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 617 transitions. [2024-11-18 19:16:54,863 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 617 transitions. Word has length 271 [2024-11-18 19:16:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:16:54,865 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 617 transitions. [2024-11-18 19:16:54,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:16:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 617 transitions. [2024-11-18 19:16:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 19:16:54,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:16:54,867 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:54,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:16:54,867 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:16:54,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:16:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash 451481748, now seen corresponding path program 1 times [2024-11-18 19:16:54,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:16:54,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532824900] [2024-11-18 19:16:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:16:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:16:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:17:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:17:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:17:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532824900] [2024-11-18 19:17:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532824900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:17:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:17:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 19:17:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513932130] [2024-11-18 19:17:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:17:00,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 19:17:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:17:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 19:17:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-18 19:17:00,832 INFO L87 Difference]: Start difference. First operand 390 states and 617 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-18 19:17:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:17:04,298 INFO L93 Difference]: Finished difference Result 432 states and 663 transitions. [2024-11-18 19:17:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 19:17:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 272 [2024-11-18 19:17:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:17:04,301 INFO L225 Difference]: With dead ends: 432 [2024-11-18 19:17:04,301 INFO L226 Difference]: Without dead ends: 430 [2024-11-18 19:17:04,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2024-11-18 19:17:04,302 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 374 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:17:04,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1801 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 19:17:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-18 19:17:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 387. [2024-11-18 19:17:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 254 states have (on average 1.3976377952755905) internal successors, (355), 254 states have internal predecessors, (355), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:17:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 613 transitions. [2024-11-18 19:17:04,324 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 613 transitions. Word has length 272 [2024-11-18 19:17:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:17:04,324 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 613 transitions. [2024-11-18 19:17:04,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-18 19:17:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 613 transitions. [2024-11-18 19:17:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 19:17:04,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:17:04,326 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:04,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 19:17:04,326 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:17:04,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:17:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash -429573735, now seen corresponding path program 1 times [2024-11-18 19:17:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:17:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389387037] [2024-11-18 19:17:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:17:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:17:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:17:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:17:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:17:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389387037] [2024-11-18 19:17:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389387037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:17:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:17:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 19:17:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619272769] [2024-11-18 19:17:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:17:13,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 19:17:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:17:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 19:17:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-18 19:17:13,029 INFO L87 Difference]: Start difference. First operand 387 states and 613 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:17:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:17:21,171 INFO L93 Difference]: Finished difference Result 445 states and 678 transitions. [2024-11-18 19:17:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 19:17:21,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 272 [2024-11-18 19:17:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:17:21,179 INFO L225 Difference]: With dead ends: 445 [2024-11-18 19:17:21,179 INFO L226 Difference]: Without dead ends: 443 [2024-11-18 19:17:21,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 19:17:21,184 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 303 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 19:17:21,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1668 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 19:17:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-18 19:17:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 392. [2024-11-18 19:17:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 259 states have (on average 1.3976833976833978) internal successors, (362), 259 states have internal predecessors, (362), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 19:17:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 620 transitions. [2024-11-18 19:17:21,212 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 620 transitions. Word has length 272 [2024-11-18 19:17:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:17:21,212 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 620 transitions. [2024-11-18 19:17:21,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 19:17:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 620 transitions. [2024-11-18 19:17:21,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 19:17:21,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:17:21,214 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:21,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:17:21,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:17:21,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:17:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1131429171, now seen corresponding path program 1 times [2024-11-18 19:17:21,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:17:21,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225876415] [2024-11-18 19:17:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:17:21,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:17:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:17:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 19:17:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:17:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225876415] [2024-11-18 19:17:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225876415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:17:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:17:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-18 19:17:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022616404] [2024-11-18 19:17:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:17:28,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 19:17:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:17:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 19:17:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-18 19:17:28,441 INFO L87 Difference]: Start difference. First operand 392 states and 620 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43)