./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/Problem12_label46.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/Problem12_label46.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 1c2312716e6fa6f39794093b35b73580b35ed138a1f875dde4c4286d98110cb3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:06:06,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:06:06,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:06:06,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:06:06,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:06:06,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:06:06,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:06:06,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:06:06,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:06:06,278 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:06:06,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:06:06,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:06:06,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:06:06,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:06:06,280 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:06:06,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:06:06,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:06:06,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:06:06,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:06:06,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:06:06,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:06:06,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:06:06,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:06:06,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:06:06,285 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:06:06,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:06:06,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:06:06,286 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:06:06,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:06:06,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:06:06,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:06:06,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:06:06,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:06:06,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:06:06,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:06:06,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:06:06,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:06:06,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:06:06,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:06:06,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:06:06,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:06:06,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:06:06,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c2312716e6fa6f39794093b35b73580b35ed138a1f875dde4c4286d98110cb3 [2024-10-12 16:06:06,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:06:06,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:06:06,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:06:06,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:06:06,568 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:06:06,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label46.c [2024-10-12 16:06:08,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:06:08,484 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:06:08,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label46.c [2024-10-12 16:06:08,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc36b661e/3981895c186546328fb93366a1213ad7/FLAG98976ac64 [2024-10-12 16:06:08,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc36b661e/3981895c186546328fb93366a1213ad7 [2024-10-12 16:06:08,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:06:08,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:06:08,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:06:08,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:06:08,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:06:08,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:06:08" (1/1) ... [2024-10-12 16:06:08,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271ef3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:08, skipping insertion in model container [2024-10-12 16:06:08,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:06:08" (1/1) ... [2024-10-12 16:06:08,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:06:08,945 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/Problem12_label46.c[7526,7539] [2024-10-12 16:06:09,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:06:09,636 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:06:09,668 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/Problem12_label46.c[7526,7539] [2024-10-12 16:06:10,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:06:10,081 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:06:10,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10 WrapperNode [2024-10-12 16:06:10,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:06:10,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:06:10,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:06:10,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:06:10,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,447 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-12 16:06:10,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:06:10,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:06:10,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:06:10,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:06:10,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,795 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 16:06:10,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:10,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:11,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:11,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:11,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:11,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:06:11,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:06:11,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:06:11,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:06:11,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (1/1) ... [2024-10-12 16:06:11,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:06:11,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:06:11,170 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 16:06:11,174 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 16:06:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:06:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:06:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:06:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:06:11,304 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:06:11,306 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:06:15,604 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-12 16:06:15,604 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:06:15,685 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:06:15,686 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:06:15,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:06:15 BoogieIcfgContainer [2024-10-12 16:06:15,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:06:15,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:06:15,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:06:15,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:06:15,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:06:08" (1/3) ... [2024-10-12 16:06:15,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:06:15, skipping insertion in model container [2024-10-12 16:06:15,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:10" (2/3) ... [2024-10-12 16:06:15,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:06:15, skipping insertion in model container [2024-10-12 16:06:15,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:06:15" (3/3) ... [2024-10-12 16:06:15,698 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2024-10-12 16:06:15,716 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:06:15,717 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:06:15,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:06:15,818 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;@1babcf7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:06:15,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:06:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 16:06:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 16:06:15,844 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:15,846 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] [2024-10-12 16:06:15,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:15,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -507338381, now seen corresponding path program 1 times [2024-10-12 16:06:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:15,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494111177] [2024-10-12 16:06:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:15,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:16,073 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 16:06:16,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:16,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494111177] [2024-10-12 16:06:16,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494111177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:16,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:16,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:06:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112902517] [2024-10-12 16:06:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:16,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:06:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:06:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:06:16,118 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 16:06:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:16,223 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-12 16:06:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:06:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2024-10-12 16:06:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:16,253 INFO L225 Difference]: With dead ends: 1511 [2024-10-12 16:06:16,253 INFO L226 Difference]: Without dead ends: 754 [2024-10-12 16:06:16,258 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 16:06:16,261 INFO L432 NwaCegarLoop]: 1438 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, 1438 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 16:06:16,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:06:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-12 16:06:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-12 16:06:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 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 16:06:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-12 16:06:16,341 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 60 [2024-10-12 16:06:16,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:16,342 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-12 16:06:16,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 16:06:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-12 16:06:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 16:06:16,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:16,344 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] [2024-10-12 16:06:16,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:06:16,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:16,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 317874538, now seen corresponding path program 1 times [2024-10-12 16:06:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:16,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995369445] [2024-10-12 16:06:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:16,787 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 16:06:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995369445] [2024-10-12 16:06:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995369445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:16,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:16,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129299991] [2024-10-12 16:06:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:16,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:06:16,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:16,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:06:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:16,793 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 16:06:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:22,695 INFO L93 Difference]: Finished difference Result 3009 states and 5747 transitions. [2024-10-12 16:06:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:06:22,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2024-10-12 16:06:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:22,705 INFO L225 Difference]: With dead ends: 3009 [2024-10-12 16:06:22,705 INFO L226 Difference]: Without dead ends: 2256 [2024-10-12 16:06:22,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:06:22,708 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 2195 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5155 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:22,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 709 Invalid, 6400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5155 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-12 16:06:22,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-10-12 16:06:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2024-10-12 16:06:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5139689578713968) internal successors, (3414), 2255 states have internal predecessors, (3414), 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 16:06:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3414 transitions. [2024-10-12 16:06:22,764 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3414 transitions. Word has length 60 [2024-10-12 16:06:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:22,764 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 3414 transitions. [2024-10-12 16:06:22,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 16:06:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3414 transitions. [2024-10-12 16:06:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 16:06:22,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:22,769 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:22,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:06:22,770 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:22,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:22,770 INFO L85 PathProgramCache]: Analyzing trace with hash -350860102, now seen corresponding path program 1 times [2024-10-12 16:06:22,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:22,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537616256] [2024-10-12 16:06:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:22,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:06:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:23,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537616256] [2024-10-12 16:06:23,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537616256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:23,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:23,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:23,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272062181] [2024-10-12 16:06:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:23,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:06:23,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:06:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:23,158 INFO L87 Difference]: Start difference. First operand 2256 states and 3414 transitions. Second operand has 4 states, 4 states have (on average 32.75) 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 16:06:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:26,753 INFO L93 Difference]: Finished difference Result 6050 states and 9519 transitions. [2024-10-12 16:06:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:06:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) 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 131 [2024-10-12 16:06:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:26,766 INFO L225 Difference]: With dead ends: 6050 [2024-10-12 16:06:26,766 INFO L226 Difference]: Without dead ends: 3758 [2024-10-12 16:06:26,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:26,770 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 703 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:26,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 704 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-12 16:06:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2024-10-12 16:06:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2024-10-12 16:06:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.3305829118977908) internal successors, (4999), 3757 states have internal predecessors, (4999), 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 16:06:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4999 transitions. [2024-10-12 16:06:26,847 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4999 transitions. Word has length 131 [2024-10-12 16:06:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:26,847 INFO L471 AbstractCegarLoop]: Abstraction has 3758 states and 4999 transitions. [2024-10-12 16:06:26,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) 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 16:06:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4999 transitions. [2024-10-12 16:06:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-10-12 16:06:26,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:26,853 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:06:26,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:06:26,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:26,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1057680965, now seen corresponding path program 1 times [2024-10-12 16:06:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685492361] [2024-10-12 16:06:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 16:06:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:27,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685492361] [2024-10-12 16:06:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685492361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:27,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:27,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:27,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728095384] [2024-10-12 16:06:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:27,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:06:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:06:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:27,365 INFO L87 Difference]: Start difference. First operand 3758 states and 4999 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 16:06:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:30,605 INFO L93 Difference]: Finished difference Result 9056 states and 12623 transitions. [2024-10-12 16:06:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:06:30,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 272 [2024-10-12 16:06:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:30,623 INFO L225 Difference]: With dead ends: 9056 [2024-10-12 16:06:30,623 INFO L226 Difference]: Without dead ends: 5262 [2024-10-12 16:06:30,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:30,629 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 775 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:30,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 321 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-12 16:06:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2024-10-12 16:06:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5260. [2024-10-12 16:06:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.3242061228370412) internal successors, (6964), 5259 states have internal predecessors, (6964), 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 16:06:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6964 transitions. [2024-10-12 16:06:30,727 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6964 transitions. Word has length 272 [2024-10-12 16:06:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:30,728 INFO L471 AbstractCegarLoop]: Abstraction has 5260 states and 6964 transitions. [2024-10-12 16:06:30,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 16:06:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6964 transitions. [2024-10-12 16:06:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-10-12 16:06:30,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:30,733 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:30,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:06:30,733 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:30,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1164764226, now seen corresponding path program 1 times [2024-10-12 16:06:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:30,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523831459] [2024-10-12 16:06:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:06:30,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:30,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523831459] [2024-10-12 16:06:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523831459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920110820] [2024-10-12 16:06:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:30,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:30,965 INFO L87 Difference]: Start difference. First operand 5260 states and 6964 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 16:06:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:33,653 INFO L93 Difference]: Finished difference Result 15025 states and 20133 transitions. [2024-10-12 16:06:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 286 [2024-10-12 16:06:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:33,677 INFO L225 Difference]: With dead ends: 15025 [2024-10-12 16:06:33,677 INFO L226 Difference]: Without dead ends: 9766 [2024-10-12 16:06:33,682 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 16:06:33,683 INFO L432 NwaCegarLoop]: 1251 mSDtfsCounter, 676 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:33,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1257 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:06:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2024-10-12 16:06:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2024-10-12 16:06:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2976958525345623) internal successors, (12672), 9765 states have internal predecessors, (12672), 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 16:06:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12672 transitions. [2024-10-12 16:06:33,867 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12672 transitions. Word has length 286 [2024-10-12 16:06:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:33,868 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12672 transitions. [2024-10-12 16:06:33,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 16:06:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12672 transitions. [2024-10-12 16:06:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-12 16:06:33,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:33,875 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:33,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:06:33,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:33,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash -353002700, now seen corresponding path program 1 times [2024-10-12 16:06:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:33,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316942395] [2024-10-12 16:06:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 41 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:06:34,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:34,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316942395] [2024-10-12 16:06:34,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316942395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:06:34,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999169030] [2024-10-12 16:06:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:34,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:06:34,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:06:34,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:06:34,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:06:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:34,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:06:34,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:06:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 16:06:34,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:06:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999169030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:34,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:06:34,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:06:34,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787505051] [2024-10-12 16:06:34,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:34,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:34,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:06:34,780 INFO L87 Difference]: Start difference. First operand 9766 states and 12672 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 16:06:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:37,517 INFO L93 Difference]: Finished difference Result 26290 states and 34789 transitions. [2024-10-12 16:06:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 290 [2024-10-12 16:06:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:37,555 INFO L225 Difference]: With dead ends: 26290 [2024-10-12 16:06:37,556 INFO L226 Difference]: Without dead ends: 16525 [2024-10-12 16:06:37,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:06:37,567 INFO L432 NwaCegarLoop]: 1220 mSDtfsCounter, 711 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:37,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1227 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:06:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2024-10-12 16:06:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 16525. [2024-10-12 16:06:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16525 states, 16524 states have (on average 1.295449043815057) internal successors, (21406), 16524 states have internal predecessors, (21406), 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 16:06:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16525 states to 16525 states and 21406 transitions. [2024-10-12 16:06:37,800 INFO L78 Accepts]: Start accepts. Automaton has 16525 states and 21406 transitions. Word has length 290 [2024-10-12 16:06:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:37,801 INFO L471 AbstractCegarLoop]: Abstraction has 16525 states and 21406 transitions. [2024-10-12 16:06:37,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 16:06:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 16525 states and 21406 transitions. [2024-10-12 16:06:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-10-12 16:06:37,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:37,807 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:37,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:06:38,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 16:06:38,008 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:38,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1909186478, now seen corresponding path program 1 times [2024-10-12 16:06:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426390699] [2024-10-12 16:06:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-12 16:06:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:38,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426390699] [2024-10-12 16:06:38,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426390699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:38,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:38,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:06:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090035767] [2024-10-12 16:06:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:38,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:38,218 INFO L87 Difference]: Start difference. First operand 16525 states and 21406 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 16:06:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:40,680 INFO L93 Difference]: Finished difference Result 33049 states and 42811 transitions. [2024-10-12 16:06:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 294 [2024-10-12 16:06:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:40,708 INFO L225 Difference]: With dead ends: 33049 [2024-10-12 16:06:40,709 INFO L226 Difference]: Without dead ends: 16525 [2024-10-12 16:06:40,722 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 16:06:40,724 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 694 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:40,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 429 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:06:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2024-10-12 16:06:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 15774. [2024-10-12 16:06:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.1835414949597414) internal successors, (18668), 15773 states have internal predecessors, (18668), 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 16:06:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 18668 transitions. [2024-10-12 16:06:40,918 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 18668 transitions. Word has length 294 [2024-10-12 16:06:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:40,919 INFO L471 AbstractCegarLoop]: Abstraction has 15774 states and 18668 transitions. [2024-10-12 16:06:40,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 16:06:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 18668 transitions. [2024-10-12 16:06:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-10-12 16:06:40,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:40,927 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:06:40,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:06:40,928 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:40,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1175735116, now seen corresponding path program 1 times [2024-10-12 16:06:40,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:40,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454396498] [2024-10-12 16:06:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:06:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454396498] [2024-10-12 16:06:41,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454396498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558944509] [2024-10-12 16:06:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:41,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:41,526 INFO L87 Difference]: Start difference. First operand 15774 states and 18668 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 16:06:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:43,971 INFO L93 Difference]: Finished difference Result 39808 states and 47721 transitions. [2024-10-12 16:06:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:43,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 373 [2024-10-12 16:06:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:44,010 INFO L225 Difference]: With dead ends: 39808 [2024-10-12 16:06:44,010 INFO L226 Difference]: Without dead ends: 24035 [2024-10-12 16:06:44,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 16:06:44,030 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 779 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:44,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 103 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:06:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24035 states. [2024-10-12 16:06:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24035 to 24035. [2024-10-12 16:06:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24035 states, 24034 states have (on average 1.1853624032620453) internal successors, (28489), 24034 states have internal predecessors, (28489), 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 16:06:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24035 states to 24035 states and 28489 transitions. [2024-10-12 16:06:44,305 INFO L78 Accepts]: Start accepts. Automaton has 24035 states and 28489 transitions. Word has length 373 [2024-10-12 16:06:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:44,305 INFO L471 AbstractCegarLoop]: Abstraction has 24035 states and 28489 transitions. [2024-10-12 16:06:44,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 16:06:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24035 states and 28489 transitions. [2024-10-12 16:06:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-10-12 16:06:44,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:44,315 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:06:44,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:06:44,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:44,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2051640401, now seen corresponding path program 1 times [2024-10-12 16:06:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541672189] [2024-10-12 16:06:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 16:06:44,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541672189] [2024-10-12 16:06:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541672189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:44,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:44,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:44,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221817137] [2024-10-12 16:06:44,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:44,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:44,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:44,739 INFO L87 Difference]: Start difference. First operand 24035 states and 28489 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 16:06:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:47,520 INFO L93 Difference]: Finished difference Result 66093 states and 79120 transitions. [2024-10-12 16:06:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:47,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 387 [2024-10-12 16:06:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:47,577 INFO L225 Difference]: With dead ends: 66093 [2024-10-12 16:06:47,577 INFO L226 Difference]: Without dead ends: 42059 [2024-10-12 16:06:47,607 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 16:06:47,609 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 689 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:47,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 421 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:06:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42059 states. [2024-10-12 16:06:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42059 to 40557. [2024-10-12 16:06:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40557 states, 40556 states have (on average 1.1694200611500147) internal successors, (47427), 40556 states have internal predecessors, (47427), 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 16:06:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40557 states to 40557 states and 47427 transitions. [2024-10-12 16:06:48,055 INFO L78 Accepts]: Start accepts. Automaton has 40557 states and 47427 transitions. Word has length 387 [2024-10-12 16:06:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:48,056 INFO L471 AbstractCegarLoop]: Abstraction has 40557 states and 47427 transitions. [2024-10-12 16:06:48,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 16:06:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 40557 states and 47427 transitions. [2024-10-12 16:06:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-10-12 16:06:48,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:48,177 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:48,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:06:48,178 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:48,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash 591378494, now seen corresponding path program 1 times [2024-10-12 16:06:48,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662914584] [2024-10-12 16:06:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:06:48,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662914584] [2024-10-12 16:06:48,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662914584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:48,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:48,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997866225] [2024-10-12 16:06:48,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:48,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:48,537 INFO L87 Difference]: Start difference. First operand 40557 states and 47427 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 16:06:51,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:51,246 INFO L93 Difference]: Finished difference Result 99888 states and 117539 transitions. [2024-10-12 16:06:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 393 [2024-10-12 16:06:51,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:51,329 INFO L225 Difference]: With dead ends: 99888 [2024-10-12 16:06:51,329 INFO L226 Difference]: Without dead ends: 59332 [2024-10-12 16:06:51,375 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 16:06:51,376 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 661 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:51,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 341 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:06:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59332 states. [2024-10-12 16:06:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59332 to 57830. [2024-10-12 16:06:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57830 states, 57829 states have (on average 1.1668021235020491) internal successors, (67475), 57829 states have internal predecessors, (67475), 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 16:06:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57830 states to 57830 states and 67475 transitions. [2024-10-12 16:06:52,159 INFO L78 Accepts]: Start accepts. Automaton has 57830 states and 67475 transitions. Word has length 393 [2024-10-12 16:06:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:52,160 INFO L471 AbstractCegarLoop]: Abstraction has 57830 states and 67475 transitions. [2024-10-12 16:06:52,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 16:06:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 57830 states and 67475 transitions. [2024-10-12 16:06:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-12 16:06:52,169 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:52,169 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:06:52,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:06:52,169 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:52,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1399890943, now seen corresponding path program 1 times [2024-10-12 16:06:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:52,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417621047] [2024-10-12 16:06:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:52,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-10-12 16:06:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417621047] [2024-10-12 16:06:53,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417621047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:53,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745017832] [2024-10-12 16:06:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:53,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:53,160 INFO L87 Difference]: Start difference. First operand 57830 states and 67475 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 16:06:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:55,773 INFO L93 Difference]: Finished difference Result 129928 states and 150897 transitions. [2024-10-12 16:06:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 419 [2024-10-12 16:06:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:55,855 INFO L225 Difference]: With dead ends: 129928 [2024-10-12 16:06:55,855 INFO L226 Difference]: Without dead ends: 72099 [2024-10-12 16:06:55,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:06:55,988 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 804 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:55,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 900 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:06:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72099 states. [2024-10-12 16:06:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72099 to 67593. [2024-10-12 16:06:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67593 states, 67592 states have (on average 1.153612853592141) internal successors, (77975), 67592 states have internal predecessors, (77975), 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 16:06:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67593 states to 67593 states and 77975 transitions. [2024-10-12 16:06:56,948 INFO L78 Accepts]: Start accepts. Automaton has 67593 states and 77975 transitions. Word has length 419 [2024-10-12 16:06:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:56,948 INFO L471 AbstractCegarLoop]: Abstraction has 67593 states and 77975 transitions. [2024-10-12 16:06:56,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 16:06:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 67593 states and 77975 transitions. [2024-10-12 16:06:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-10-12 16:06:56,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:56,964 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:56,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:06:56,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:56,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1466788717, now seen corresponding path program 1 times [2024-10-12 16:06:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:56,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886310351] [2024-10-12 16:06:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-10-12 16:06:57,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886310351] [2024-10-12 16:06:57,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886310351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:57,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:57,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:57,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302741709] [2024-10-12 16:06:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:57,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:57,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:57,505 INFO L87 Difference]: Start difference. First operand 67593 states and 77975 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 16:07:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:07:00,258 INFO L93 Difference]: Finished difference Result 135936 states and 156703 transitions. [2024-10-12 16:07:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:07:00,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 478 [2024-10-12 16:07:00,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:07:00,328 INFO L225 Difference]: With dead ends: 135936 [2024-10-12 16:07:00,329 INFO L226 Difference]: Without dead ends: 68344 [2024-10-12 16:07:00,356 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 16:07:00,357 INFO L432 NwaCegarLoop]: 1132 mSDtfsCounter, 723 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:07:00,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1139 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:07:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68344 states. [2024-10-12 16:07:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68344 to 66091. [2024-10-12 16:07:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66091 states, 66090 states have (on average 1.1375699803298531) internal successors, (75182), 66090 states have internal predecessors, (75182), 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 16:07:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66091 states to 66091 states and 75182 transitions. [2024-10-12 16:07:01,270 INFO L78 Accepts]: Start accepts. Automaton has 66091 states and 75182 transitions. Word has length 478 [2024-10-12 16:07:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:07:01,271 INFO L471 AbstractCegarLoop]: Abstraction has 66091 states and 75182 transitions. [2024-10-12 16:07:01,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 16:07:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 66091 states and 75182 transitions. [2024-10-12 16:07:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-10-12 16:07:01,286 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:07:01,286 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:07:01,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:07:01,287 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:07:01,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:07:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -679213310, now seen corresponding path program 1 times [2024-10-12 16:07:01,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:07:01,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476767000] [2024-10-12 16:07:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:07:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:07:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:07:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 276 proven. 333 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-10-12 16:07:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:07:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476767000] [2024-10-12 16:07:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476767000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:07:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517721600] [2024-10-12 16:07:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:07:02,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:07:02,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:07:02,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:07:02,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:07:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:07:02,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:07:02,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:07:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-12 16:07:02,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:07:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517721600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:07:02,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:07:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:07:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863348006] [2024-10-12 16:07:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:07:02,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:07:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:07:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:07:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:07:02,394 INFO L87 Difference]: Start difference. First operand 66091 states and 75182 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 16:07:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:07:05,130 INFO L93 Difference]: Finished difference Result 149452 states and 170384 transitions. [2024-10-12 16:07:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:07:05,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 498 [2024-10-12 16:07:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:07:05,131 INFO L225 Difference]: With dead ends: 149452 [2024-10-12 16:07:05,131 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 16:07:05,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:07:05,158 INFO L432 NwaCegarLoop]: 1114 mSDtfsCounter, 809 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:07:05,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1120 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:07:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 16:07:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 16:07:05,159 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 16:07:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 16:07:05,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 498 [2024-10-12 16:07:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:07:05,160 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 16:07:05,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 16:07:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 16:07:05,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 16:07:05,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 16:07:05,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 16:07:05,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 16:07:05,366 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:07:05,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 16:07:07,237 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 16:07:07,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:07:07 BoogieIcfgContainer [2024-10-12 16:07:07,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 16:07:07,255 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 16:07:07,255 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 16:07:07,255 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 16:07:07,256 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:06:15" (3/4) ... [2024-10-12 16:07:07,258 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 16:07:07,310 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-12 16:07:07,316 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-12 16:07:07,322 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 16:07:07,328 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 16:07:07,656 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 16:07:07,657 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 16:07:07,657 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 16:07:07,658 INFO L158 Benchmark]: Toolchain (without parser) took 59119.69ms. Allocated memory was 146.8MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 77.1MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 924.6MB. Max. memory is 16.1GB. [2024-10-12 16:07:07,658 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 146.8MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 16:07:07,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1542.08ms. Allocated memory was 146.8MB in the beginning and 230.7MB in the end (delta: 83.9MB). Free memory was 76.7MB in the beginning and 168.1MB in the end (delta: -91.4MB). Peak memory consumption was 126.3MB. Max. memory is 16.1GB. [2024-10-12 16:07:07,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 364.61ms. Allocated memory is still 230.7MB. Free memory was 168.1MB in the beginning and 96.8MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2024-10-12 16:07:07,659 INFO L158 Benchmark]: Boogie Preprocessor took 682.70ms. Allocated memory was 230.7MB in the beginning and 461.4MB in the end (delta: 230.7MB). Free memory was 96.8MB in the beginning and 345.0MB in the end (delta: -248.2MB). Peak memory consumption was 78.9MB. Max. memory is 16.1GB. [2024-10-12 16:07:07,660 INFO L158 Benchmark]: RCFGBuilder took 4554.78ms. Allocated memory was 461.4MB in the beginning and 780.1MB in the end (delta: 318.8MB). Free memory was 345.0MB in the beginning and 561.7MB in the end (delta: -216.7MB). Peak memory consumption was 201.9MB. Max. memory is 16.1GB. [2024-10-12 16:07:07,660 INFO L158 Benchmark]: TraceAbstraction took 51564.34ms. Allocated memory was 780.1MB in the beginning and 8.1GB in the end (delta: 7.4GB). Free memory was 561.7MB in the beginning and 7.2GB in the end (delta: -6.7GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-10-12 16:07:07,661 INFO L158 Benchmark]: Witness Printer took 401.95ms. Allocated memory is still 8.1GB. Free memory was 7.2GB in the beginning and 7.1GB in the end (delta: 70.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2024-10-12 16:07:07,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 146.8MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1542.08ms. Allocated memory was 146.8MB in the beginning and 230.7MB in the end (delta: 83.9MB). Free memory was 76.7MB in the beginning and 168.1MB in the end (delta: -91.4MB). Peak memory consumption was 126.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 364.61ms. Allocated memory is still 230.7MB. Free memory was 168.1MB in the beginning and 96.8MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 682.70ms. Allocated memory was 230.7MB in the beginning and 461.4MB in the end (delta: 230.7MB). Free memory was 96.8MB in the beginning and 345.0MB in the end (delta: -248.2MB). Peak memory consumption was 78.9MB. Max. memory is 16.1GB. * RCFGBuilder took 4554.78ms. Allocated memory was 461.4MB in the beginning and 780.1MB in the end (delta: 318.8MB). Free memory was 345.0MB in the beginning and 561.7MB in the end (delta: -216.7MB). Peak memory consumption was 201.9MB. Max. memory is 16.1GB. * TraceAbstraction took 51564.34ms. Allocated memory was 780.1MB in the beginning and 8.1GB in the end (delta: 7.4GB). Free memory was 561.7MB in the beginning and 7.2GB in the end (delta: -6.7GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 401.95ms. Allocated memory is still 8.1GB. Free memory was 7.2GB in the beginning and 7.1GB in the end (delta: 70.3MB). Peak memory consumption was 69.2MB. 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: 205]: 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, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 49.6s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 37.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10219 SdHoareTripleChecker+Valid, 34.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10219 mSDsluCounter, 10109 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 7576 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32577 IncrementalHoareTripleChecker+Invalid, 40153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7576 mSolverCounterUnsat, 10005 mSDtfsCounter, 32577 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 833 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67593occurred in iteration=11, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 10516 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 4729 NumberOfCodeBlocks, 4729 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4714 ConstructedInterpolants, 0 QuantifiedInterpolants, 15040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1038 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 4391/4884 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: 4828]: Loop Invariant Derived loop invariant: ((((((((((((((((a2 <= 170) && (a5 != 4)) && (a5 <= 4)) || ((a7 == 13) && (a24 != 13))) || ((a2 <= 170) && (a7 == 13))) || ((a7 == 13) && (190 <= a2))) || ((5 <= a5) && (a7 == 13))) || (((a5 != 4) && (a7 == 13)) && (a17 <= 111))) || ((14 <= a7) && (a17 <= 111))) || ((a2 <= 170) && (a7 == 12))) || ((190 <= a2) && (a7 == 12))) || ((14 <= a7) && (a24 != 13))) || ((5 <= a5) && (14 <= a7))) || ((a5 != 4) && (a7 == 12))) || ((14 <= a7) && (190 <= a2))) || ((a24 != 13) && (a7 == 12))) RESULT: Ultimate proved your program to be correct! [2024-10-12 16:07:07,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE