./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-10.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 f438dca2376e7c8417e397f8c4e8905746bba2e764fb7eae58181fb192c76381 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 09:07:47,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 09:07:47,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 09:07:47,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 09:07:47,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 09:07:47,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 09:07:47,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 09:07:47,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 09:07:47,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 09:07:47,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 09:07:47,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 09:07:47,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 09:07:47,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 09:07:47,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 09:07:47,204 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 09:07:47,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 09:07:47,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 09:07:47,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 09:07:47,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 09:07:47,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 09:07:47,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 09:07:47,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 09:07:47,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 09:07:47,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 09:07:47,207 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 09:07:47,207 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 09:07:47,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 09:07:47,207 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 09:07:47,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 09:07:47,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 09:07:47,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 09:07:47,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 09:07:47,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 09:07:47,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 09:07:47,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 09:07:47,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 09:07:47,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f438dca2376e7c8417e397f8c4e8905746bba2e764fb7eae58181fb192c76381 [2024-11-22 09:07:47,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 09:07:47,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 09:07:47,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 09:07:47,460 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 09:07:47,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 09:07:47,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-10.i [2024-11-22 09:07:48,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 09:07:48,841 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 09:07:48,841 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-10.i [2024-11-22 09:07:48,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1031386/b071d69838ac495bba1bba251b8791dd/FLAG21724e82f [2024-11-22 09:07:49,215 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1031386/b071d69838ac495bba1bba251b8791dd [2024-11-22 09:07:49,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 09:07:49,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 09:07:49,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 09:07:49,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 09:07:49,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 09:07:49,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbd1bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49, skipping insertion in model container [2024-11-22 09:07:49,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 09:07:49,417 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_fillercodestructure_filler-ps-ci_file-10.i[919,932] [2024-11-22 09:07:49,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 09:07:49,503 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 09:07:49,514 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_fillercodestructure_filler-ps-ci_file-10.i[919,932] [2024-11-22 09:07:49,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 09:07:49,562 INFO L204 MainTranslator]: Completed translation [2024-11-22 09:07:49,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49 WrapperNode [2024-11-22 09:07:49,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 09:07:49,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 09:07:49,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 09:07:49,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 09:07:49,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,625 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 298 [2024-11-22 09:07:49,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 09:07:49,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 09:07:49,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 09:07:49,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 09:07:49,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,670 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 09:07:49,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 09:07:49,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 09:07:49,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 09:07:49,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 09:07:49,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (1/1) ... [2024-11-22 09:07:49,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 09:07:49,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:07:49,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 09:07:49,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 09:07:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 09:07:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 09:07:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 09:07:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 09:07:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 09:07:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 09:07:49,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 09:07:49,864 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 09:07:50,296 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-22 09:07:50,297 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 09:07:50,312 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 09:07:50,312 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 09:07:50,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:07:50 BoogieIcfgContainer [2024-11-22 09:07:50,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 09:07:50,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 09:07:50,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 09:07:50,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 09:07:50,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:07:49" (1/3) ... [2024-11-22 09:07:50,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456c62c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:07:50, skipping insertion in model container [2024-11-22 09:07:50,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:07:49" (2/3) ... [2024-11-22 09:07:50,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456c62c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:07:50, skipping insertion in model container [2024-11-22 09:07:50,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:07:50" (3/3) ... [2024-11-22 09:07:50,322 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-10.i [2024-11-22 09:07:50,336 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 09:07:50,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 09:07:50,410 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 09:07:50,416 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;@1bb98455, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 09:07:50,416 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 09:07:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 91 states have (on average 1.4395604395604396) internal successors, (131), 92 states have internal predecessors, (131), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 09:07:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-22 09:07:50,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:07:50,448 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:07:50,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:07:50,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:07:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1557986687, now seen corresponding path program 1 times [2024-11-22 09:07:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:07:50,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760283345] [2024-11-22 09:07:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:07:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:07:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:07:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-22 09:07:50,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:07:50,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760283345] [2024-11-22 09:07:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760283345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 09:07:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25730757] [2024-11-22 09:07:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:07:50,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 09:07:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:07:50,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 09:07:50,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 09:07:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:07:51,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 09:07:51,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 09:07:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-22 09:07:51,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 09:07:51,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25730757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:07:51,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 09:07:51,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 09:07:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799118081] [2024-11-22 09:07:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:07:51,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 09:07:51,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:07:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 09:07:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 09:07:51,093 INFO L87 Difference]: Start difference. First operand has 128 states, 91 states have (on average 1.4395604395604396) internal successors, (131), 92 states have internal predecessors, (131), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 09:07:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:07:51,129 INFO L93 Difference]: Finished difference Result 249 states and 426 transitions. [2024-11-22 09:07:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 09:07:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 220 [2024-11-22 09:07:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:07:51,139 INFO L225 Difference]: With dead ends: 249 [2024-11-22 09:07:51,139 INFO L226 Difference]: Without dead ends: 124 [2024-11-22 09:07:51,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 09:07:51,146 INFO L432 NwaCegarLoop]: 192 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, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 09:07:51,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 09:07:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-22 09:07:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-22 09:07:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 88 states have internal predecessors, (124), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 09:07:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 192 transitions. [2024-11-22 09:07:51,201 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 192 transitions. Word has length 220 [2024-11-22 09:07:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:07:51,203 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 192 transitions. [2024-11-22 09:07:51,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 09:07:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 192 transitions. [2024-11-22 09:07:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-22 09:07:51,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:07:51,208 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:07:51,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 09:07:51,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 09:07:51,413 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:07:51,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:07:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -227716681, now seen corresponding path program 1 times [2024-11-22 09:07:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:07:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019661506] [2024-11-22 09:07:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:07:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:07:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:07:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:07:51,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:07:51,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019661506] [2024-11-22 09:07:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019661506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:07:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:07:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 09:07:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653489369] [2024-11-22 09:07:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:07:51,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 09:07:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:07:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 09:07:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 09:07:51,879 INFO L87 Difference]: Start difference. First operand 124 states and 192 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:07:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:07:52,070 INFO L93 Difference]: Finished difference Result 367 states and 571 transitions. [2024-11-22 09:07:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 09:07:52,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-22 09:07:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:07:52,075 INFO L225 Difference]: With dead ends: 367 [2024-11-22 09:07:52,076 INFO L226 Difference]: Without dead ends: 246 [2024-11-22 09:07:52,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 09:07:52,080 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 167 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 09:07:52,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 553 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 09:07:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-22 09:07:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 212. [2024-11-22 09:07:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 141 states have (on average 1.3900709219858156) internal successors, (196), 141 states have internal predecessors, (196), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 09:07:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 332 transitions. [2024-11-22 09:07:52,113 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 332 transitions. Word has length 220 [2024-11-22 09:07:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:07:52,114 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 332 transitions. [2024-11-22 09:07:52,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:07:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 332 transitions. [2024-11-22 09:07:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 09:07:52,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:07:52,119 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:07:52,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 09:07:52,119 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:07:52,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:07:52,124 INFO L85 PathProgramCache]: Analyzing trace with hash 281096731, now seen corresponding path program 1 times [2024-11-22 09:07:52,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:07:52,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193974596] [2024-11-22 09:07:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:07:52,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:07:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:08:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:08:08,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:08:08,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193974596] [2024-11-22 09:08:08,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193974596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:08:08,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:08:08,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 09:08:08,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836204809] [2024-11-22 09:08:08,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:08:08,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 09:08:08,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:08:08,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 09:08:08,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-22 09:08:08,504 INFO L87 Difference]: Start difference. First operand 212 states and 332 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 09:08:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:08:09,861 INFO L93 Difference]: Finished difference Result 483 states and 731 transitions. [2024-11-22 09:08:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 09:08:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-22 09:08:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:08:09,865 INFO L225 Difference]: With dead ends: 483 [2024-11-22 09:08:09,865 INFO L226 Difference]: Without dead ends: 344 [2024-11-22 09:08:09,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-22 09:08:09,867 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 533 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 09:08:09,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1056 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 09:08:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-22 09:08:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 260. [2024-11-22 09:08:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 187 states have (on average 1.3796791443850267) internal successors, (258), 187 states have internal predecessors, (258), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 09:08:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 394 transitions. [2024-11-22 09:08:09,888 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 394 transitions. Word has length 221 [2024-11-22 09:08:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:08:09,890 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 394 transitions. [2024-11-22 09:08:09,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 09:08:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 394 transitions. [2024-11-22 09:08:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 09:08:09,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:08:09,893 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:08:09,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 09:08:09,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:08:09,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:08:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1713047975, now seen corresponding path program 1 times [2024-11-22 09:08:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:08:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507046237] [2024-11-22 09:08:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:08:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:08:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:08:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:08:22,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:08:22,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507046237] [2024-11-22 09:08:22,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507046237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:08:22,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:08:22,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 09:08:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632940373] [2024-11-22 09:08:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:08:22,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 09:08:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:08:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 09:08:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-22 09:08:22,111 INFO L87 Difference]: Start difference. First operand 260 states and 394 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-22 09:08:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:08:24,126 INFO L93 Difference]: Finished difference Result 537 states and 791 transitions. [2024-11-22 09:08:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 09:08:24,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 221 [2024-11-22 09:08:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:08:24,129 INFO L225 Difference]: With dead ends: 537 [2024-11-22 09:08:24,129 INFO L226 Difference]: Without dead ends: 405 [2024-11-22 09:08:24,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2024-11-22 09:08:24,132 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 839 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 09:08:24,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1165 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 09:08:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-22 09:08:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 273. [2024-11-22 09:08:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 199 states have (on average 1.3668341708542713) internal successors, (272), 199 states have internal predecessors, (272), 68 states have call successors, (68), 5 states have call predecessors, (68), 5 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 09:08:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 408 transitions. [2024-11-22 09:08:24,163 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 408 transitions. Word has length 221 [2024-11-22 09:08:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:08:24,163 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 408 transitions. [2024-11-22 09:08:24,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-22 09:08:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 408 transitions. [2024-11-22 09:08:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 09:08:24,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:08:24,168 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:08:24,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 09:08:24,168 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:08:24,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:08:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1454882537, now seen corresponding path program 1 times [2024-11-22 09:08:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:08:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532833103] [2024-11-22 09:08:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:08:24,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:08:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:08:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:08:36,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:08:36,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532833103] [2024-11-22 09:08:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532833103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:08:36,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:08:36,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 09:08:36,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947833075] [2024-11-22 09:08:36,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:08:36,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 09:08:36,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:08:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 09:08:36,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-22 09:08:36,528 INFO L87 Difference]: Start difference. First operand 273 states and 408 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:08:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:08:38,017 INFO L93 Difference]: Finished difference Result 527 states and 771 transitions. [2024-11-22 09:08:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 09:08:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-22 09:08:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:08:38,021 INFO L225 Difference]: With dead ends: 527 [2024-11-22 09:08:38,021 INFO L226 Difference]: Without dead ends: 406 [2024-11-22 09:08:38,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2024-11-22 09:08:38,023 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 455 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 09:08:38,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1142 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 09:08:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-22 09:08:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 277. [2024-11-22 09:08:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 202 states have (on average 1.3613861386138615) internal successors, (275), 202 states have internal predecessors, (275), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 09:08:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 411 transitions. [2024-11-22 09:08:38,053 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 411 transitions. Word has length 221 [2024-11-22 09:08:38,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:08:38,054 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 411 transitions. [2024-11-22 09:08:38,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:08:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 411 transitions. [2024-11-22 09:08:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 09:08:38,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:08:38,057 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:08:38,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 09:08:38,057 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:08:38,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:08:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 287631835, now seen corresponding path program 1 times [2024-11-22 09:08:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:08:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175114955] [2024-11-22 09:08:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:08:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:08:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:08:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:08:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:08:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175114955] [2024-11-22 09:08:38,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175114955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:08:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:08:38,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 09:08:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856774973] [2024-11-22 09:08:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:08:38,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 09:08:38,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:08:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 09:08:38,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 09:08:38,131 INFO L87 Difference]: Start difference. First operand 277 states and 411 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:08:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:08:38,170 INFO L93 Difference]: Finished difference Result 504 states and 750 transitions. [2024-11-22 09:08:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 09:08:38,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-22 09:08:38,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:08:38,173 INFO L225 Difference]: With dead ends: 504 [2024-11-22 09:08:38,173 INFO L226 Difference]: Without dead ends: 335 [2024-11-22 09:08:38,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 09:08:38,175 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 92 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 09:08:38,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 406 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 09:08:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-22 09:08:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 332. [2024-11-22 09:08:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 249 states have internal predecessors, (337), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-22 09:08:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 489 transitions. [2024-11-22 09:08:38,196 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 489 transitions. Word has length 221 [2024-11-22 09:08:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:08:38,196 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 489 transitions. [2024-11-22 09:08:38,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:08:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 489 transitions. [2024-11-22 09:08:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 09:08:38,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:08:38,199 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:08:38,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 09:08:38,199 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:08:38,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:08:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash 967690205, now seen corresponding path program 1 times [2024-11-22 09:08:38,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:08:38,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516752823] [2024-11-22 09:08:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:08:38,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:08:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat