./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.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 8ae218ca02b5417943c2f14caa583f12c89b5725c70ee83be125986bc0e82f29 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 09:55:12,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 09:55:12,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 09:55:12,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 09:55:12,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 09:55:12,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 09:55:12,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 09:55:12,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 09:55:12,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 09:55:12,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 09:55:12,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 09:55:12,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 09:55:12,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 09:55:12,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 09:55:12,442 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 09:55:12,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 09:55:12,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 09:55:12,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 09:55:12,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 09:55:12,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 09:55:12,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 09:55:12,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 09:55:12,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 09:55:12,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 09:55:12,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 09:55:12,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 09:55:12,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 09:55:12,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 09:55:12,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 09:55:12,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 09:55:12,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 09:55:12,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 09:55:12,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 09:55:12,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 09:55:12,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 09:55:12,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 09:55:12,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 09:55:12,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 09:55:12,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 09:55:12,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 09:55:12,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 09:55:12,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 09:55:12,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ae218ca02b5417943c2f14caa583f12c89b5725c70ee83be125986bc0e82f29 [2024-10-14 09:55:12,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 09:55:12,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 09:55:12,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 09:55:12,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 09:55:12,713 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 09:55:12,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i [2024-10-14 09:55:14,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 09:55:14,297 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 09:55:14,297 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i [2024-10-14 09:55:14,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660f8194e/7190f0e38c04449d89d3657a05361078/FLAG81ddfbd0d [2024-10-14 09:55:14,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660f8194e/7190f0e38c04449d89d3657a05361078 [2024-10-14 09:55:14,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 09:55:14,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 09:55:14,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 09:55:14,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 09:55:14,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 09:55:14,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c52858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14, skipping insertion in model container [2024-10-14 09:55:14,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 09:55:14,475 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i[919,932] [2024-10-14 09:55:14,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 09:55:14,540 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 09:55:14,553 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i[919,932] [2024-10-14 09:55:14,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 09:55:14,608 INFO L204 MainTranslator]: Completed translation [2024-10-14 09:55:14,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14 WrapperNode [2024-10-14 09:55:14,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 09:55:14,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 09:55:14,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 09:55:14,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 09:55:14,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,652 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 222 [2024-10-14 09:55:14,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 09:55:14,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 09:55:14,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 09:55:14,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 09:55:14,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,699 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]. [2024-10-14 09:55:14,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 09:55:14,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 09:55:14,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 09:55:14,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 09:55:14,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (1/1) ... [2024-10-14 09:55:14,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 09:55:14,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 09:55:14,757 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) [2024-10-14 09:55:14,763 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 [2024-10-14 09:55:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 09:55:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 09:55:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 09:55:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 09:55:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 09:55:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 09:55:14,884 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 09:55:14,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 09:55:15,240 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-14 09:55:15,240 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 09:55:15,287 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 09:55:15,288 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 09:55:15,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:15 BoogieIcfgContainer [2024-10-14 09:55:15,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 09:55:15,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 09:55:15,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 09:55:15,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 09:55:15,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:55:14" (1/3) ... [2024-10-14 09:55:15,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:15, skipping insertion in model container [2024-10-14 09:55:15,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:14" (2/3) ... [2024-10-14 09:55:15,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:15, skipping insertion in model container [2024-10-14 09:55:15,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:15" (3/3) ... [2024-10-14 09:55:15,300 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i [2024-10-14 09:55:15,319 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 09:55:15,319 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 09:55:15,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 09:55:15,385 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;@55cbe010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 09:55:15,385 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 09:55:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 57 states have (on average 1.543859649122807) internal successors, (88), 58 states have internal predecessors, (88), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-14 09:55:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-14 09:55:15,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 09:55:15,401 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 09:55:15,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 09:55:15,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 09:55:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash -785273223, now seen corresponding path program 1 times [2024-10-14 09:55:15,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 09:55:15,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417431518] [2024-10-14 09:55:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:15,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 09:55:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 09:55:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 09:55:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 09:55:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 09:55:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 09:55:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 09:55:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 09:55:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 09:55:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 09:55:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 09:55:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 09:55:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 09:55:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 09:55:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 09:55:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 09:55:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 09:55:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 09:55:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 09:55:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 09:55:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-14 09:55:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 09:55:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-14 09:55:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-14 09:55:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 09:55:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-14 09:55:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-14 09:55:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-14 09:55:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-14 09:55:15,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 09:55:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417431518] [2024-10-14 09:55:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417431518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 09:55:15,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 09:55:15,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 09:55:15,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94411665] [2024-10-14 09:55:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 09:55:15,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 09:55:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 09:55:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 09:55:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 09:55:15,866 INFO L87 Difference]: Start difference. First operand has 87 states, 57 states have (on average 1.543859649122807) internal successors, (88), 58 states have internal predecessors, (88), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-10-14 09:55:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 09:55:15,908 INFO L93 Difference]: Finished difference Result 171 states and 309 transitions. [2024-10-14 09:55:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 09:55:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 169 [2024-10-14 09:55:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 09:55:15,936 INFO L225 Difference]: With dead ends: 171 [2024-10-14 09:55:15,937 INFO L226 Difference]: Without dead ends: 85 [2024-10-14 09:55:15,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 09:55:15,943 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 09:55:15,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 09:55:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-14 09:55:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-10-14 09:55:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 56 states have internal predecessors, (82), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-14 09:55:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 136 transitions. [2024-10-14 09:55:16,034 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 136 transitions. Word has length 169 [2024-10-14 09:55:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 09:55:16,036 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 136 transitions. [2024-10-14 09:55:16,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-10-14 09:55:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 136 transitions. [2024-10-14 09:55:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-14 09:55:16,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 09:55:16,042 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 09:55:16,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 09:55:16,042 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 09:55:16,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 09:55:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1322192127, now seen corresponding path program 1 times [2024-10-14 09:55:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 09:55:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464775728] [2024-10-14 09:55:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 09:55:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:16,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 09:55:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:16,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 09:55:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:16,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 09:55:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 09:55:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 09:55:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 09:55:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 09:55:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 09:55:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 09:55:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 09:55:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 09:55:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 09:55:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 09:55:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 09:55:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 09:55:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 09:55:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 09:55:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 09:55:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 09:55:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-14 09:55:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 09:55:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-14 09:55:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-14 09:55:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 09:55:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-14 09:55:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-14 09:55:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-14 09:55:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-14 09:55:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 09:55:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464775728] [2024-10-14 09:55:17,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464775728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 09:55:17,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 09:55:17,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 09:55:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49220831] [2024-10-14 09:55:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 09:55:17,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 09:55:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 09:55:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 09:55:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 09:55:17,084 INFO L87 Difference]: Start difference. First operand 85 states and 136 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-10-14 09:55:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 09:55:17,165 INFO L93 Difference]: Finished difference Result 195 states and 312 transitions. [2024-10-14 09:55:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 09:55:17,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2024-10-14 09:55:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 09:55:17,167 INFO L225 Difference]: With dead ends: 195 [2024-10-14 09:55:17,167 INFO L226 Difference]: Without dead ends: 111 [2024-10-14 09:55:17,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 09:55:17,169 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 115 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 09:55:17,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 279 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 09:55:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-10-14 09:55:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2024-10-14 09:55:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 70 states have internal predecessors, (104), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-14 09:55:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 158 transitions. [2024-10-14 09:55:17,190 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 158 transitions. Word has length 169 [2024-10-14 09:55:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 09:55:17,193 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 158 transitions. [2024-10-14 09:55:17,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-10-14 09:55:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 158 transitions. [2024-10-14 09:55:17,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-14 09:55:17,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 09:55:17,197 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 09:55:17,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 09:55:17,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 09:55:17,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 09:55:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash 512845501, now seen corresponding path program 1 times [2024-10-14 09:55:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 09:55:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430007235] [2024-10-14 09:55:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 09:55:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 09:55:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 09:55:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 09:55:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 09:55:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 09:55:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 09:55:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 09:55:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 09:55:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 09:55:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 09:55:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 09:55:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 09:55:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 09:55:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 09:55:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 09:55:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 09:55:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 09:55:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 09:55:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 09:55:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-14 09:55:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 09:55:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-14 09:55:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-14 09:55:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 09:55:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-14 09:55:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-14 09:55:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-14 09:55:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-14 09:55:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 09:55:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430007235] [2024-10-14 09:55:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430007235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 09:55:17,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 09:55:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 09:55:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176274023] [2024-10-14 09:55:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 09:55:17,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 09:55:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 09:55:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 09:55:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 09:55:17,618 INFO L87 Difference]: Start difference. First operand 99 states and 158 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-10-14 09:55:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 09:55:17,850 INFO L93 Difference]: Finished difference Result 296 states and 473 transitions. [2024-10-14 09:55:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 09:55:17,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2024-10-14 09:55:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 09:55:17,854 INFO L225 Difference]: With dead ends: 296 [2024-10-14 09:55:17,854 INFO L226 Difference]: Without dead ends: 198 [2024-10-14 09:55:17,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 09:55:17,856 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 98 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 09:55:17,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 458 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 09:55:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-10-14 09:55:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 147. [2024-10-14 09:55:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-10-14 09:55:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 232 transitions. [2024-10-14 09:55:17,877 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 232 transitions. Word has length 169 [2024-10-14 09:55:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 09:55:17,877 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 232 transitions. [2024-10-14 09:55:17,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-10-14 09:55:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 232 transitions. [2024-10-14 09:55:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-14 09:55:17,880 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 09:55:17,880 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 09:55:17,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 09:55:17,880 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 09:55:17,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 09:55:17,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1325496585, now seen corresponding path program 1 times [2024-10-14 09:55:17,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 09:55:17,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588724164] [2024-10-14 09:55:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:17,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 09:55:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 09:55:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 09:55:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 09:55:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 09:55:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 09:55:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 09:55:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 09:55:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 09:55:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 09:55:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 09:55:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 09:55:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 09:55:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 09:55:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 09:55:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 09:55:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 09:55:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 09:55:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 09:55:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 09:55:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-14 09:55:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 09:55:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-14 09:55:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-14 09:55:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 09:55:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-14 09:55:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-14 09:55:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-14 09:55:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-14 09:55:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 09:55:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588724164] [2024-10-14 09:55:21,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588724164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 09:55:21,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 09:55:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 09:55:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200053822] [2024-10-14 09:55:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 09:55:21,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 09:55:21,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 09:55:21,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 09:55:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 09:55:21,597 INFO L87 Difference]: Start difference. First operand 147 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-10-14 09:55:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 09:55:22,262 INFO L93 Difference]: Finished difference Result 413 states and 653 transitions. [2024-10-14 09:55:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 09:55:22,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 170 [2024-10-14 09:55:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 09:55:22,270 INFO L225 Difference]: With dead ends: 413 [2024-10-14 09:55:22,270 INFO L226 Difference]: Without dead ends: 315 [2024-10-14 09:55:22,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 09:55:22,273 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 286 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 09:55:22,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 352 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 09:55:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-10-14 09:55:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 303. [2024-10-14 09:55:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 189 states have (on average 1.380952380952381) internal successors, (261), 190 states have internal predecessors, (261), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-10-14 09:55:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 477 transitions. [2024-10-14 09:55:22,327 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 477 transitions. Word has length 170 [2024-10-14 09:55:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 09:55:22,328 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 477 transitions. [2024-10-14 09:55:22,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-10-14 09:55:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 477 transitions. [2024-10-14 09:55:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-14 09:55:22,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 09:55:22,330 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 09:55:22,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 09:55:22,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 09:55:22,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 09:55:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1932877731, now seen corresponding path program 1 times [2024-10-14 09:55:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 09:55:22,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984924480] [2024-10-14 09:55:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 09:55:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 09:55:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 09:55:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 09:55:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 09:55:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 09:55:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 09:55:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 09:55:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 09:55:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 09:55:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 09:55:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 09:55:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 09:55:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 09:55:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 09:55:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 09:55:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 09:55:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 09:55:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 09:55:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 09:55:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-14 09:55:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 09:55:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-14 09:55:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-14 09:55:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 09:55:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-14 09:55:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-14 09:55:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-14 09:55:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-10-14 09:55:22,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 09:55:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984924480] [2024-10-14 09:55:22,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984924480] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 09:55:22,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306985046] [2024-10-14 09:55:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:22,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 09:55:22,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 09:55:22,894 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) [2024-10-14 09:55:22,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 09:55:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 09:55:23,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 09:55:23,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 09:55:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 308 proven. 69 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-10-14 09:55:23,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 09:55:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-10-14 09:55:24,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306985046] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 09:55:24,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 09:55:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 13 [2024-10-14 09:55:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656341911] [2024-10-14 09:55:24,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 09:55:24,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 09:55:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 09:55:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 09:55:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-14 09:55:24,112 INFO L87 Difference]: Start difference. First operand 303 states and 477 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 5 states have call successors, (77), 3 states have call predecessors, (77), 6 states have return successors, (78), 5 states have call predecessors, (78), 5 states have call successors, (78) [2024-10-14 09:55:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 09:55:24,431 INFO L93 Difference]: Finished difference Result 560 states and 861 transitions. [2024-10-14 09:55:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 09:55:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 5 states have call successors, (77), 3 states have call predecessors, (77), 6 states have return successors, (78), 5 states have call predecessors, (78), 5 states have call successors, (78) Word has length 171 [2024-10-14 09:55:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 09:55:24,436 INFO L225 Difference]: With dead ends: 560 [2024-10-14 09:55:24,436 INFO L226 Difference]: Without dead ends: 306 [2024-10-14 09:55:24,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 386 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2024-10-14 09:55:24,438 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 272 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 09:55:24,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 292 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 09:55:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-14 09:55:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 288. [2024-10-14 09:55:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 170 states have (on average 1.2705882352941176) internal successors, (216), 171 states have internal predecessors, (216), 108 states have call successors, (108), 9 states have call predecessors, (108), 9 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-10-14 09:55:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 432 transitions. [2024-10-14 09:55:24,496 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 432 transitions. Word has length 171 [2024-10-14 09:55:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 09:55:24,497 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 432 transitions. [2024-10-14 09:55:24,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 5 states have call successors, (77), 3 states have call predecessors, (77), 6 states have return successors, (78), 5 states have call predecessors, (78), 5 states have call successors, (78) [2024-10-14 09:55:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 432 transitions. [2024-10-14 09:55:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-14 09:55:24,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 09:55:24,499 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 09:55:24,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 09:55:24,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 09:55:24,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 09:55:24,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 09:55:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1198017321, now seen corresponding path program 1 times [2024-10-14 09:55:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 09:55:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723012338] [2024-10-14 09:55:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 09:55:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 09:55:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat