./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/eca-rers2012/Problem02_label09.c -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 f81dd1ef8995b0b07e1ce6d856db2fedb8abb1366230168a1e5c2e68aff05e24 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:16:17,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:16:17,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:16:17,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:16:17,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:16:17,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:16:17,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:16:17,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:16:17,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:16:17,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:16:17,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:16:17,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:16:17,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:16:17,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:16:17,290 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:16:17,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:16:17,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:16:17,292 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:16:17,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:16:17,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:16:17,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:16:17,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:16:17,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:16:17,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:16:17,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:16:17,297 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:16:17,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:16:17,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:16:17,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:16:17,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:16:17,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:16:17,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:16:17,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:16:17,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:16:17,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:16:17,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:16:17,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:16:17,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:16:17,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:16:17,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:16:17,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:16:17,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:16:17,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81dd1ef8995b0b07e1ce6d856db2fedb8abb1366230168a1e5c2e68aff05e24 [2024-10-12 15:16:17,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:16:17,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:16:17,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:16:17,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:16:17,587 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:16:17,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label09.c [2024-10-12 15:16:19,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:16:19,300 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:16:19,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label09.c [2024-10-12 15:16:19,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecebf5c3/11c4a32bc5a74a83b331a5c7367b4ebe/FLAGa9b8224b7 [2024-10-12 15:16:19,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecebf5c3/11c4a32bc5a74a83b331a5c7367b4ebe [2024-10-12 15:16:19,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:16:19,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:16:19,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:16:19,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:16:19,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:16:19,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ca1905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19, skipping insertion in model container [2024-10-12 15:16:19,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:16:19,715 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/eca-rers2012/Problem02_label09.c[19170,19183] [2024-10-12 15:16:19,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:16:19,769 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:16:19,854 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/eca-rers2012/Problem02_label09.c[19170,19183] [2024-10-12 15:16:19,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:16:19,886 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:16:19,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19 WrapperNode [2024-10-12 15:16:19,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:16:19,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:16:19,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:16:19,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:16:19,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,968 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-10-12 15:16:19,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:16:19,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:16:19,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:16:19,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:16:19,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,033 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]. [2024-10-12 15:16:20,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:16:20,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:16:20,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:16:20,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:16:20,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:20,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:16:20,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:16:20,145 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) [2024-10-12 15:16:20,148 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 [2024-10-12 15:16:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:16:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:16:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:16:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:16:20,320 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:16:20,323 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:16:21,286 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-10-12 15:16:21,287 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:16:21,363 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:16:21,365 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:16:21,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:21 BoogieIcfgContainer [2024-10-12 15:16:21,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:16:21,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:16:21,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:16:21,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:16:21,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:16:19" (1/3) ... [2024-10-12 15:16:21,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2741e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:16:21, skipping insertion in model container [2024-10-12 15:16:21,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (2/3) ... [2024-10-12 15:16:21,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2741e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:16:21, skipping insertion in model container [2024-10-12 15:16:21,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:21" (3/3) ... [2024-10-12 15:16:21,374 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2024-10-12 15:16:21,393 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:16:21,393 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:16:21,478 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:16:21,483 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;@43af2fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:16:21,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:16:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-12 15:16:21,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:21,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:21,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:21,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash -183833243, now seen corresponding path program 1 times [2024-10-12 15:16:21,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638148979] [2024-10-12 15:16:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:21,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638148979] [2024-10-12 15:16:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638148979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:21,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:21,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951653029] [2024-10-12 15:16:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:21,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:16:21,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:16:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:16:21,969 INFO L87 Difference]: Start difference. First operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:22,010 INFO L93 Difference]: Finished difference Result 329 states and 625 transitions. [2024-10-12 15:16:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:16:22,014 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-10-12 15:16:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:22,023 INFO L225 Difference]: With dead ends: 329 [2024-10-12 15:16:22,023 INFO L226 Difference]: Without dead ends: 163 [2024-10-12 15:16:22,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:16:22,030 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:22,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:16:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-12 15:16:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-12 15:16:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-10-12 15:16:22,068 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 120 [2024-10-12 15:16:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:22,069 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-10-12 15:16:22,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-10-12 15:16:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-12 15:16:22,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:22,073 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:22,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:16:22,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:22,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash 370809458, now seen corresponding path program 1 times [2024-10-12 15:16:22,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:22,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426260958] [2024-10-12 15:16:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:22,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:22,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426260958] [2024-10-12 15:16:22,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426260958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:22,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:22,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168403231] [2024-10-12 15:16:22,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:22,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:22,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:22,425 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:23,024 INFO L93 Difference]: Finished difference Result 466 states and 712 transitions. [2024-10-12 15:16:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:23,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-10-12 15:16:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:23,029 INFO L225 Difference]: With dead ends: 466 [2024-10-12 15:16:23,029 INFO L226 Difference]: Without dead ends: 304 [2024-10-12 15:16:23,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,035 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 99 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:23,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 42 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:16:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-12 15:16:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-10-12 15:16:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.528052805280528) internal successors, (463), 303 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2024-10-12 15:16:23,056 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 120 [2024-10-12 15:16:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:23,061 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2024-10-12 15:16:23,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2024-10-12 15:16:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 15:16:23,064 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:23,066 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:23,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:16:23,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:23,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:23,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1204608264, now seen corresponding path program 1 times [2024-10-12 15:16:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:23,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214377522] [2024-10-12 15:16:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:23,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214377522] [2024-10-12 15:16:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214377522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:23,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806040667] [2024-10-12 15:16:23,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:23,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:23,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,262 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:23,735 INFO L93 Difference]: Finished difference Result 899 states and 1373 transitions. [2024-10-12 15:16:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-10-12 15:16:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:23,739 INFO L225 Difference]: With dead ends: 899 [2024-10-12 15:16:23,740 INFO L226 Difference]: Without dead ends: 596 [2024-10-12 15:16:23,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,746 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 191 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:23,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 70 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:16:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-10-12 15:16:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 455. [2024-10-12 15:16:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.4911894273127753) internal successors, (677), 454 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 677 transitions. [2024-10-12 15:16:23,785 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 677 transitions. Word has length 131 [2024-10-12 15:16:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:23,786 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 677 transitions. [2024-10-12 15:16:23,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 677 transitions. [2024-10-12 15:16:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-12 15:16:23,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:23,789 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:23,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:16:23,789 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:23,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 460227537, now seen corresponding path program 1 times [2024-10-12 15:16:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993940754] [2024-10-12 15:16:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:23,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:23,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993940754] [2024-10-12 15:16:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993940754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:23,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:23,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:23,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956731848] [2024-10-12 15:16:23,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:23,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:23,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:23,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,952 INFO L87 Difference]: Start difference. First operand 455 states and 677 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:24,415 INFO L93 Difference]: Finished difference Result 1349 states and 2014 transitions. [2024-10-12 15:16:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-10-12 15:16:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:24,419 INFO L225 Difference]: With dead ends: 1349 [2024-10-12 15:16:24,419 INFO L226 Difference]: Without dead ends: 895 [2024-10-12 15:16:24,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:24,421 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 156 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:24,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 122 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2024-10-12 15:16:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 748. [2024-10-12 15:16:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.4404283801874163) internal successors, (1076), 747 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1076 transitions. [2024-10-12 15:16:24,438 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1076 transitions. Word has length 138 [2024-10-12 15:16:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:24,439 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1076 transitions. [2024-10-12 15:16:24,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1076 transitions. [2024-10-12 15:16:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-12 15:16:24,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:24,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:24,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:16:24,442 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:24,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash -545735077, now seen corresponding path program 1 times [2024-10-12 15:16:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774686994] [2024-10-12 15:16:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:24,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:24,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774686994] [2024-10-12 15:16:24,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774686994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:24,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:24,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228193357] [2024-10-12 15:16:24,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:24,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:24,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:24,583 INFO L87 Difference]: Start difference. First operand 748 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:25,037 INFO L93 Difference]: Finished difference Result 2198 states and 3170 transitions. [2024-10-12 15:16:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:25,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-10-12 15:16:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:25,044 INFO L225 Difference]: With dead ends: 2198 [2024-10-12 15:16:25,044 INFO L226 Difference]: Without dead ends: 1451 [2024-10-12 15:16:25,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:25,047 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 176 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:25,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 75 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2024-10-12 15:16:25,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1311. [2024-10-12 15:16:25,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1310 states have (on average 1.3648854961832062) internal successors, (1788), 1310 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1788 transitions. [2024-10-12 15:16:25,075 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1788 transitions. Word has length 142 [2024-10-12 15:16:25,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:25,076 INFO L471 AbstractCegarLoop]: Abstraction has 1311 states and 1788 transitions. [2024-10-12 15:16:25,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1788 transitions. [2024-10-12 15:16:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-12 15:16:25,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:25,080 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:25,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:16:25,081 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:25,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1852166791, now seen corresponding path program 1 times [2024-10-12 15:16:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282593257] [2024-10-12 15:16:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:25,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 15:16:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282593257] [2024-10-12 15:16:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282593257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:25,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:25,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992546964] [2024-10-12 15:16:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:25,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:25,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:25,348 INFO L87 Difference]: Start difference. First operand 1311 states and 1788 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:25,874 INFO L93 Difference]: Finished difference Result 3044 states and 4120 transitions. [2024-10-12 15:16:25,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:25,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-10-12 15:16:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:25,882 INFO L225 Difference]: With dead ends: 3044 [2024-10-12 15:16:25,883 INFO L226 Difference]: Without dead ends: 1734 [2024-10-12 15:16:25,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:25,888 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 144 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:25,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 123 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:16:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-10-12 15:16:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-10-12 15:16:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 1.290583477758521) internal successors, (2234), 1731 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2234 transitions. [2024-10-12 15:16:25,934 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2234 transitions. Word has length 168 [2024-10-12 15:16:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:25,937 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2234 transitions. [2024-10-12 15:16:25,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2234 transitions. [2024-10-12 15:16:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-12 15:16:25,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:25,942 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:25,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:16:25,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:25,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1689353248, now seen corresponding path program 1 times [2024-10-12 15:16:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:25,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009164645] [2024-10-12 15:16:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:25,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 15:16:26,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:26,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009164645] [2024-10-12 15:16:26,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009164645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:26,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:26,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191750057] [2024-10-12 15:16:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:26,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:26,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:26,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:26,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:26,138 INFO L87 Difference]: Start difference. First operand 1732 states and 2234 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:26,605 INFO L93 Difference]: Finished difference Result 4306 states and 5565 transitions. [2024-10-12 15:16:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-10-12 15:16:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:26,614 INFO L225 Difference]: With dead ends: 4306 [2024-10-12 15:16:26,614 INFO L226 Difference]: Without dead ends: 2575 [2024-10-12 15:16:26,617 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 [2024-10-12 15:16:26,617 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 144 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:26,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 248 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2024-10-12 15:16:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2572. [2024-10-12 15:16:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2571 states have (on average 1.2228704784130688) internal successors, (3144), 2571 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3144 transitions. [2024-10-12 15:16:26,661 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3144 transitions. Word has length 173 [2024-10-12 15:16:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:26,662 INFO L471 AbstractCegarLoop]: Abstraction has 2572 states and 3144 transitions. [2024-10-12 15:16:26,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3144 transitions. [2024-10-12 15:16:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-12 15:16:26,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:26,667 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:26,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:16:26,668 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:26,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1365136582, now seen corresponding path program 1 times [2024-10-12 15:16:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290092281] [2024-10-12 15:16:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:26,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 15:16:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290092281] [2024-10-12 15:16:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290092281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:26,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:26,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112249599] [2024-10-12 15:16:26,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:26,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:26,819 INFO L87 Difference]: Start difference. First operand 2572 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:27,274 INFO L93 Difference]: Finished difference Result 5985 states and 7254 transitions. [2024-10-12 15:16:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-10-12 15:16:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:27,286 INFO L225 Difference]: With dead ends: 5985 [2024-10-12 15:16:27,286 INFO L226 Difference]: Without dead ends: 3414 [2024-10-12 15:16:27,289 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 [2024-10-12 15:16:27,290 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:27,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 64 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2024-10-12 15:16:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3132. [2024-10-12 15:16:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3131 states have (on average 1.1893963589907377) internal successors, (3724), 3131 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3724 transitions. [2024-10-12 15:16:27,346 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3724 transitions. Word has length 175 [2024-10-12 15:16:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:27,346 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3724 transitions. [2024-10-12 15:16:27,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3724 transitions. [2024-10-12 15:16:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-12 15:16:27,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:27,352 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:27,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:16:27,352 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:27,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 345194372, now seen corresponding path program 1 times [2024-10-12 15:16:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:27,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558058145] [2024-10-12 15:16:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 15:16:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558058145] [2024-10-12 15:16:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558058145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932896726] [2024-10-12 15:16:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:27,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:27,459 INFO L87 Difference]: Start difference. First operand 3132 states and 3724 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:27,894 INFO L93 Difference]: Finished difference Result 5982 states and 7148 transitions. [2024-10-12 15:16:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:27,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2024-10-12 15:16:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:27,905 INFO L225 Difference]: With dead ends: 5982 [2024-10-12 15:16:27,905 INFO L226 Difference]: Without dead ends: 2851 [2024-10-12 15:16:27,908 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 [2024-10-12 15:16:27,910 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 144 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:27,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 250 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2024-10-12 15:16:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2843. [2024-10-12 15:16:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2842 states have (on average 1.1576354679802956) internal successors, (3290), 2842 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 3290 transitions. [2024-10-12 15:16:27,962 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 3290 transitions. Word has length 179 [2024-10-12 15:16:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:27,963 INFO L471 AbstractCegarLoop]: Abstraction has 2843 states and 3290 transitions. [2024-10-12 15:16:27,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 3290 transitions. [2024-10-12 15:16:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-12 15:16:27,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:27,969 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:27,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:16:27,970 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:27,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash 394544924, now seen corresponding path program 1 times [2024-10-12 15:16:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683811078] [2024-10-12 15:16:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-12 15:16:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683811078] [2024-10-12 15:16:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683811078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:28,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537942301] [2024-10-12 15:16:28,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:28,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:28,117 INFO L87 Difference]: Start difference. First operand 2843 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:28,530 INFO L93 Difference]: Finished difference Result 5687 states and 6581 transitions. [2024-10-12 15:16:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:28,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-10-12 15:16:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:28,542 INFO L225 Difference]: With dead ends: 5687 [2024-10-12 15:16:28,542 INFO L226 Difference]: Without dead ends: 2845 [2024-10-12 15:16:28,545 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 [2024-10-12 15:16:28,546 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 116 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:28,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 256 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2024-10-12 15:16:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2843. [2024-10-12 15:16:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2842 states have (on average 1.1382828993666432) internal successors, (3235), 2842 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 3235 transitions. [2024-10-12 15:16:28,588 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 3235 transitions. Word has length 197 [2024-10-12 15:16:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:28,588 INFO L471 AbstractCegarLoop]: Abstraction has 2843 states and 3235 transitions. [2024-10-12 15:16:28,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 3235 transitions. [2024-10-12 15:16:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-12 15:16:28,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:28,594 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:28,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 15:16:28,594 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:28,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash -129536280, now seen corresponding path program 1 times [2024-10-12 15:16:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:28,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082220758] [2024-10-12 15:16:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-12 15:16:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:28,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082220758] [2024-10-12 15:16:28,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082220758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:28,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119689380] [2024-10-12 15:16:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:28,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:28,762 INFO L87 Difference]: Start difference. First operand 2843 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:29,210 INFO L93 Difference]: Finished difference Result 6807 states and 7863 transitions. [2024-10-12 15:16:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-10-12 15:16:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:29,211 INFO L225 Difference]: With dead ends: 6807 [2024-10-12 15:16:29,211 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 15:16:29,218 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 [2024-10-12 15:16:29,218 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 139 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:29,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 210 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 15:16:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 15:16:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 15:16:29,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2024-10-12 15:16:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:29,220 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 15:16:29,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 15:16:29,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 15:16:29,224 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 15:16:29,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 15:16:29,228 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:29,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 15:16:29,457 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 15:16:29,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:16:29 BoogieIcfgContainer [2024-10-12 15:16:29,482 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 15:16:29,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 15:16:29,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 15:16:29,483 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 15:16:29,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:21" (3/4) ... [2024-10-12 15:16:29,485 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 15:16:29,507 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-12 15:16:29,508 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-12 15:16:29,509 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 15:16:29,509 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 15:16:29,658 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 15:16:29,658 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 15:16:29,659 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 15:16:29,659 INFO L158 Benchmark]: Toolchain (without parser) took 10308.28ms. Allocated memory was 169.9MB in the beginning and 323.0MB in the end (delta: 153.1MB). Free memory was 113.5MB in the beginning and 152.7MB in the end (delta: -39.2MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,659 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 15:16:29,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.79ms. Allocated memory is still 169.9MB. Free memory was 113.1MB in the beginning and 85.0MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.33ms. Allocated memory is still 169.9MB. Free memory was 85.0MB in the beginning and 79.3MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,660 INFO L158 Benchmark]: Boogie Preprocessor took 136.54ms. Allocated memory is still 169.9MB. Free memory was 79.3MB in the beginning and 74.1MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,660 INFO L158 Benchmark]: RCFGBuilder took 1257.10ms. Allocated memory was 169.9MB in the beginning and 268.4MB in the end (delta: 98.6MB). Free memory was 74.1MB in the beginning and 151.1MB in the end (delta: -76.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,661 INFO L158 Benchmark]: TraceAbstraction took 8113.93ms. Allocated memory was 268.4MB in the beginning and 323.0MB in the end (delta: 54.5MB). Free memory was 150.0MB in the beginning and 165.3MB in the end (delta: -15.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,661 INFO L158 Benchmark]: Witness Printer took 175.83ms. Allocated memory is still 323.0MB. Free memory was 165.3MB in the beginning and 152.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,662 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.79ms. Allocated memory is still 169.9MB. Free memory was 113.1MB in the beginning and 85.0MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.33ms. Allocated memory is still 169.9MB. Free memory was 85.0MB in the beginning and 79.3MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 136.54ms. Allocated memory is still 169.9MB. Free memory was 79.3MB in the beginning and 74.1MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1257.10ms. Allocated memory was 169.9MB in the beginning and 268.4MB in the end (delta: 98.6MB). Free memory was 74.1MB in the beginning and 151.1MB in the end (delta: -76.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8113.93ms. Allocated memory was 268.4MB in the beginning and 323.0MB in the end (delta: 54.5MB). Free memory was 150.0MB in the beginning and 165.3MB in the end (delta: -15.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 175.83ms. Allocated memory is still 323.0MB. Free memory was 165.3MB in the beginning and 152.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 545]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 165 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1463 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1463 mSDsluCounter, 1708 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 660 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3693 IncrementalHoareTripleChecker+Invalid, 4353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 660 mSolverCounterUnsat, 1551 mSDtfsCounter, 3693 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3132occurred in iteration=8, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 725 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1761 NumberOfCodeBlocks, 1761 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1750 ConstructedInterpolants, 0 QuantifiedInterpolants, 2352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 744/744 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((a19 == 1) && (a25 == 0)) || (((a25 == 1) && (a11 == 0)) && (a28 <= 10))) || (((9 <= a28) && (a25 == 1)) && (a28 <= 10))) || ((a28 == 10) && (a19 == 1))) || ((a11 == 0) && (a25 == 0))) || (((a25 == 1) && (8 <= a17)) && (a28 <= 10))) || ((a25 == 1) && (a19 == 1))) || ((a28 <= 10) && (a25 == 0))) RESULT: Ultimate proved your program to be correct! [2024-10-12 15:16:29,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE