./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem02_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem02_label19.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 eadd63632d128e63354140f48e358b613932fbd540e74b83f7baa2b6412d6e8f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 16:06:03,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 16:06:03,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 16:06:03,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 16:06:03,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 16:06:03,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 16:06:03,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 16:06:03,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 16:06:03,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 16:06:03,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 16:06:03,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 16:06:03,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 16:06:03,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 16:06:03,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 16:06:03,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 16:06:03,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 16:06:03,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 16:06:03,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 16:06:03,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 16:06:03,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 16:06:03,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 16:06:03,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 16:06:03,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 16:06:03,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 16:06:03,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 16:06:03,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 16:06:03,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 16:06:03,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 16:06:03,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 16:06:03,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 16:06:03,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 16:06:03,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 16:06:03,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:06:03,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 16:06:03,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 16:06:03,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 16:06:03,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 16:06:03,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 16:06:03,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 16:06:03,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 16:06:03,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 16:06:03,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 16:06:03,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eadd63632d128e63354140f48e358b613932fbd540e74b83f7baa2b6412d6e8f [2024-11-11 16:06:03,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 16:06:03,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 16:06:03,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 16:06:03,584 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 16:06:03,584 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 16:06:03,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2024-11-11 16:06:04,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 16:06:05,103 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 16:06:05,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2024-11-11 16:06:05,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff927a5d/d43ce493a7fc480b98bc1ee077228835/FLAGf63e424e0 [2024-11-11 16:06:05,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff927a5d/d43ce493a7fc480b98bc1ee077228835 [2024-11-11 16:06:05,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 16:06:05,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 16:06:05,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 16:06:05,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 16:06:05,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 16:06:05,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e433ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05, skipping insertion in model container [2024-11-11 16:06:05,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 16:06:05,510 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label19.c[15877,15890] [2024-11-11 16:06:05,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:06:05,557 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 16:06:05,621 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label19.c[15877,15890] [2024-11-11 16:06:05,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:06:05,657 INFO L204 MainTranslator]: Completed translation [2024-11-11 16:06:05,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05 WrapperNode [2024-11-11 16:06:05,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 16:06:05,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 16:06:05,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 16:06:05,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 16:06:05,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,714 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-11-11 16:06:05,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 16:06:05,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 16:06:05,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 16:06:05,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 16:06:05,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,755 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-11 16:06:05,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 16:06:05,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 16:06:05,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 16:06:05,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 16:06:05,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (1/1) ... [2024-11-11 16:06:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:06:05,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:06:05,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 16:06:05,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 16:06:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 16:06:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 16:06:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 16:06:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 16:06:05,994 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 16:06:05,996 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 16:06:06,613 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-11 16:06:06,613 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 16:06:06,638 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 16:06:06,638 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 16:06:06,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:06:06 BoogieIcfgContainer [2024-11-11 16:06:06,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 16:06:06,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 16:06:06,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 16:06:06,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 16:06:06,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 04:06:05" (1/3) ... [2024-11-11 16:06:06,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26498c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:06:06, skipping insertion in model container [2024-11-11 16:06:06,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:06:05" (2/3) ... [2024-11-11 16:06:06,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26498c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:06:06, skipping insertion in model container [2024-11-11 16:06:06,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:06:06" (3/3) ... [2024-11-11 16:06:06,647 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2024-11-11 16:06:06,658 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 16:06:06,659 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 16:06:06,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 16:06:06,720 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;@35437f3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 16:06:06,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 16:06:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 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) [2024-11-11 16:06:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-11 16:06:06,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:06,732 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:06,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:06,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1607169461, now seen corresponding path program 1 times [2024-11-11 16:06:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:06,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61600676] [2024-11-11 16:06:06,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:07,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61600676] [2024-11-11 16:06:07,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61600676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:06:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564381432] [2024-11-11 16:06:07,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:07,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:07,204 INFO L87 Difference]: Start difference. First operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 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 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2024-11-11 16:06:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:07,768 INFO L93 Difference]: Finished difference Result 596 states and 1030 transitions. [2024-11-11 16:06:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:07,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2024-11-11 16:06:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:07,778 INFO L225 Difference]: With dead ends: 596 [2024-11-11 16:06:07,778 INFO L226 Difference]: Without dead ends: 305 [2024-11-11 16:06:07,781 INFO L434 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 [2024-11-11 16:06:07,783 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 152 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:07,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 89 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 16:06:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-11 16:06:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-11 16:06:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.5263157894736843) internal successors, (464), 304 states have internal predecessors, (464), 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) [2024-11-11 16:06:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 464 transitions. [2024-11-11 16:06:07,830 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 464 transitions. Word has length 92 [2024-11-11 16:06:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:07,830 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 464 transitions. [2024-11-11 16:06:07,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2024-11-11 16:06:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 464 transitions. [2024-11-11 16:06:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-11 16:06:07,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:07,833 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:07,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 16:06:07,834 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:07,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 757143281, now seen corresponding path program 1 times [2024-11-11 16:06:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316572415] [2024-11-11 16:06:07,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316572415] [2024-11-11 16:06:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316572415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:06:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979858386] [2024-11-11 16:06:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:07,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:07,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:07,986 INFO L87 Difference]: Start difference. First operand 305 states and 464 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-11-11 16:06:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:08,386 INFO L93 Difference]: Finished difference Result 902 states and 1375 transitions. [2024-11-11 16:06:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2024-11-11 16:06:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:08,389 INFO L225 Difference]: With dead ends: 902 [2024-11-11 16:06:08,389 INFO L226 Difference]: Without dead ends: 599 [2024-11-11 16:06:08,390 INFO L434 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 [2024-11-11 16:06:08,391 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 193 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:08,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 71 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 16:06:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-11 16:06:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 596. [2024-11-11 16:06:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 1.477310924369748) internal successors, (879), 595 states have internal predecessors, (879), 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) [2024-11-11 16:06:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 879 transitions. [2024-11-11 16:06:08,420 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 879 transitions. Word has length 103 [2024-11-11 16:06:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:08,420 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 879 transitions. [2024-11-11 16:06:08,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-11-11 16:06:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 879 transitions. [2024-11-11 16:06:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-11 16:06:08,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:08,424 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:08,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 16:06:08,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:08,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1218124506, now seen corresponding path program 1 times [2024-11-11 16:06:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:08,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771234160] [2024-11-11 16:06:08,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 16:06:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:08,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771234160] [2024-11-11 16:06:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771234160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:08,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:08,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:06:08,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371101569] [2024-11-11 16:06:08,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:08,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:08,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:08,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:08,555 INFO L87 Difference]: Start difference. First operand 596 states and 879 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2024-11-11 16:06:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:08,787 INFO L93 Difference]: Finished difference Result 1040 states and 1541 transitions. [2024-11-11 16:06:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 107 [2024-11-11 16:06:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:08,789 INFO L225 Difference]: With dead ends: 1040 [2024-11-11 16:06:08,789 INFO L226 Difference]: Without dead ends: 446 [2024-11-11 16:06:08,791 INFO L434 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 [2024-11-11 16:06:08,792 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 200 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:08,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 23 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 16:06:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-11 16:06:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-11-11 16:06:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.4247191011235956) internal successors, (634), 445 states have internal predecessors, (634), 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) [2024-11-11 16:06:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 634 transitions. [2024-11-11 16:06:08,806 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 634 transitions. Word has length 107 [2024-11-11 16:06:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:08,806 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 634 transitions. [2024-11-11 16:06:08,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2024-11-11 16:06:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 634 transitions. [2024-11-11 16:06:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-11 16:06:08,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:08,809 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:08,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 16:06:08,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:08,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash -503428042, now seen corresponding path program 1 times [2024-11-11 16:06:08,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:08,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271568544] [2024-11-11 16:06:08,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:08,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271568544] [2024-11-11 16:06:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271568544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:08,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:06:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385482012] [2024-11-11 16:06:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:08,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:08,906 INFO L87 Difference]: Start difference. First operand 446 states and 634 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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) [2024-11-11 16:06:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:09,214 INFO L93 Difference]: Finished difference Result 1324 states and 1887 transitions. [2024-11-11 16:06:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2024-11-11 16:06:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:09,216 INFO L225 Difference]: With dead ends: 1324 [2024-11-11 16:06:09,216 INFO L226 Difference]: Without dead ends: 880 [2024-11-11 16:06:09,217 INFO L434 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 [2024-11-11 16:06:09,218 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 146 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:09,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 83 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:06:09,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-11 16:06:09,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 735. [2024-11-11 16:06:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.3814713896457766) internal successors, (1014), 734 states have internal predecessors, (1014), 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) [2024-11-11 16:06:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1014 transitions. [2024-11-11 16:06:09,233 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1014 transitions. Word has length 110 [2024-11-11 16:06:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:09,234 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1014 transitions. [2024-11-11 16:06:09,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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) [2024-11-11 16:06:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1014 transitions. [2024-11-11 16:06:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-11 16:06:09,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:09,237 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:09,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 16:06:09,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:09,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1086920212, now seen corresponding path program 1 times [2024-11-11 16:06:09,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692629081] [2024-11-11 16:06:09,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:09,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692629081] [2024-11-11 16:06:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692629081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:09,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:09,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:06:09,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393638232] [2024-11-11 16:06:09,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:09,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:09,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:09,337 INFO L87 Difference]: Start difference. First operand 735 states and 1014 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2024-11-11 16:06:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:09,674 INFO L93 Difference]: Finished difference Result 2171 states and 3000 transitions. [2024-11-11 16:06:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 114 [2024-11-11 16:06:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:09,678 INFO L225 Difference]: With dead ends: 2171 [2024-11-11 16:06:09,678 INFO L226 Difference]: Without dead ends: 1438 [2024-11-11 16:06:09,679 INFO L434 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 [2024-11-11 16:06:09,680 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 159 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:09,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 61 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:06:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2024-11-11 16:06:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2024-11-11 16:06:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 1.303409881697982) internal successors, (1873), 1437 states have internal predecessors, (1873), 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) [2024-11-11 16:06:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1873 transitions. [2024-11-11 16:06:09,696 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1873 transitions. Word has length 114 [2024-11-11 16:06:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:09,697 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 1873 transitions. [2024-11-11 16:06:09,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2024-11-11 16:06:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1873 transitions. [2024-11-11 16:06:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-11 16:06:09,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:09,699 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:09,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 16:06:09,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:09,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:09,700 INFO L85 PathProgramCache]: Analyzing trace with hash 897235960, now seen corresponding path program 1 times [2024-11-11 16:06:09,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:09,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624931663] [2024-11-11 16:06:09,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:09,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:09,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:09,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624931663] [2024-11-11 16:06:09,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624931663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:09,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:09,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:06:09,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199291286] [2024-11-11 16:06:09,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:09,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:09,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:09,821 INFO L87 Difference]: Start difference. First operand 1438 states and 1873 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-11 16:06:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:10,147 INFO L93 Difference]: Finished difference Result 3856 states and 5033 transitions. [2024-11-11 16:06:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 123 [2024-11-11 16:06:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:10,152 INFO L225 Difference]: With dead ends: 3856 [2024-11-11 16:06:10,152 INFO L226 Difference]: Without dead ends: 2420 [2024-11-11 16:06:10,154 INFO L434 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 [2024-11-11 16:06:10,154 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 116 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:10,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 91 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:06:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2024-11-11 16:06:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2420. [2024-11-11 16:06:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2419 states have (on average 1.190574617610583) internal successors, (2880), 2419 states have internal predecessors, (2880), 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) [2024-11-11 16:06:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 2880 transitions. [2024-11-11 16:06:10,179 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 2880 transitions. Word has length 123 [2024-11-11 16:06:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:10,179 INFO L471 AbstractCegarLoop]: Abstraction has 2420 states and 2880 transitions. [2024-11-11 16:06:10,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-11 16:06:10,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 2880 transitions. [2024-11-11 16:06:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-11 16:06:10,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:10,182 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 16:06:10,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 16:06:10,182 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:10,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1035919885, now seen corresponding path program 1 times [2024-11-11 16:06:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:10,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222388020] [2024-11-11 16:06:10,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:10,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:10,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:10,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222388020] [2024-11-11 16:06:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222388020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:06:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914892901] [2024-11-11 16:06:10,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:10,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:10,292 INFO L87 Difference]: Start difference. First operand 2420 states and 2880 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-11 16:06:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:10,610 INFO L93 Difference]: Finished difference Result 4973 states and 5957 transitions. [2024-11-11 16:06:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2024-11-11 16:06:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:10,617 INFO L225 Difference]: With dead ends: 4973 [2024-11-11 16:06:10,617 INFO L226 Difference]: Without dead ends: 2695 [2024-11-11 16:06:10,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:10,619 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 142 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:10,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 39 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:06:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2024-11-11 16:06:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2024-11-11 16:06:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2694 states have (on average 1.1707498144023756) internal successors, (3154), 2694 states have internal predecessors, (3154), 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) [2024-11-11 16:06:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3154 transitions. [2024-11-11 16:06:10,649 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3154 transitions. Word has length 128 [2024-11-11 16:06:10,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:10,649 INFO L471 AbstractCegarLoop]: Abstraction has 2695 states and 3154 transitions. [2024-11-11 16:06:10,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-11 16:06:10,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3154 transitions. [2024-11-11 16:06:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-11 16:06:10,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:10,652 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:10,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 16:06:10,652 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:10,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash -909781289, now seen corresponding path program 1 times [2024-11-11 16:06:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:10,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663033220] [2024-11-11 16:06:10,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:10,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:06:10,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:10,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663033220] [2024-11-11 16:06:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663033220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:10,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:06:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531743217] [2024-11-11 16:06:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:10,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:10,710 INFO L87 Difference]: Start difference. First operand 2695 states and 3154 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-11 16:06:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:10,992 INFO L93 Difference]: Finished difference Result 5250 states and 6165 transitions. [2024-11-11 16:06:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:10,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2024-11-11 16:06:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:10,998 INFO L225 Difference]: With dead ends: 5250 [2024-11-11 16:06:10,998 INFO L226 Difference]: Without dead ends: 2414 [2024-11-11 16:06:11,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:11,000 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:11,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 237 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:06:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2024-11-11 16:06:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2407. [2024-11-11 16:06:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2406 states have (on average 1.1330008312551954) internal successors, (2726), 2406 states have internal predecessors, (2726), 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) [2024-11-11 16:06:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 2726 transitions. [2024-11-11 16:06:11,024 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 2726 transitions. Word has length 132 [2024-11-11 16:06:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:11,024 INFO L471 AbstractCegarLoop]: Abstraction has 2407 states and 2726 transitions. [2024-11-11 16:06:11,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-11 16:06:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 2726 transitions. [2024-11-11 16:06:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-11 16:06:11,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:06:11,027 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 16:06:11,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 16:06:11,027 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:06:11,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:06:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash -628151890, now seen corresponding path program 1 times [2024-11-11 16:06:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:06:11,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635945003] [2024-11-11 16:06:11,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:06:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:06:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:06:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-11 16:06:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:06:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635945003] [2024-11-11 16:06:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635945003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:06:11,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:06:11,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:06:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845301785] [2024-11-11 16:06:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:06:11,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:06:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:06:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:06:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:11,108 INFO L87 Difference]: Start difference. First operand 2407 states and 2726 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-11-11 16:06:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:06:11,385 INFO L93 Difference]: Finished difference Result 3249 states and 3684 transitions. [2024-11-11 16:06:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:06:11,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 141 [2024-11-11 16:06:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:06:11,386 INFO L225 Difference]: With dead ends: 3249 [2024-11-11 16:06:11,386 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 16:06:11,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:06:11,388 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 120 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:06:11,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 225 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:06:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 16:06:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 16:06:11,389 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) [2024-11-11 16:06:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 16:06:11,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2024-11-11 16:06:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:06:11,389 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 16:06:11,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-11-11 16:06:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 16:06:11,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 16:06:11,392 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 16:06:11,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 16:06:11,397 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:06:11,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-11 16:06:11,547 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 16:06:11,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 04:06:11 BoogieIcfgContainer [2024-11-11 16:06:11,573 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 16:06:11,574 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 16:06:11,577 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 16:06:11,577 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 16:06:11,578 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:06:06" (3/4) ... [2024-11-11 16:06:11,580 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-11 16:06:11,598 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-11 16:06:11,601 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-11 16:06:11,602 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-11 16:06:11,606 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-11 16:06:11,728 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-11 16:06:11,728 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-11 16:06:11,728 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 16:06:11,729 INFO L158 Benchmark]: Toolchain (without parser) took 6598.07ms. Allocated memory was 167.8MB in the beginning and 329.3MB in the end (delta: 161.5MB). Free memory was 93.8MB in the beginning and 187.3MB in the end (delta: -93.5MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2024-11-11 16:06:11,729 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 16:06:11,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.84ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 93.5MB in the beginning and 221.0MB in the end (delta: -127.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2024-11-11 16:06:11,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.32ms. Allocated memory is still 264.2MB. Free memory was 221.0MB in the beginning and 214.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-11 16:06:11,730 INFO L158 Benchmark]: Boogie Preprocessor took 93.99ms. Allocated memory is still 264.2MB. Free memory was 214.7MB in the beginning and 209.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-11 16:06:11,730 INFO L158 Benchmark]: RCFGBuilder took 828.94ms. Allocated memory is still 264.2MB. Free memory was 209.5MB in the beginning and 126.6MB in the end (delta: 82.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2024-11-11 16:06:11,730 INFO L158 Benchmark]: TraceAbstraction took 4932.43ms. Allocated memory was 264.2MB in the beginning and 329.3MB in the end (delta: 65.0MB). Free memory was 126.6MB in the beginning and 199.9MB in the end (delta: -73.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 16:06:11,731 INFO L158 Benchmark]: Witness Printer took 154.90ms. Allocated memory is still 329.3MB. Free memory was 199.9MB in the beginning and 187.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 16:06:11,732 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.84ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 93.5MB in the beginning and 221.0MB in the end (delta: -127.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.32ms. Allocated memory is still 264.2MB. Free memory was 221.0MB in the beginning and 214.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.99ms. Allocated memory is still 264.2MB. Free memory was 214.7MB in the beginning and 209.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 828.94ms. Allocated memory is still 264.2MB. Free memory was 209.5MB in the beginning and 126.6MB in the end (delta: 82.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4932.43ms. Allocated memory was 264.2MB in the beginning and 329.3MB in the end (delta: 65.0MB). Free memory was 126.6MB in the beginning and 199.9MB in the end (delta: -73.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 154.90ms. Allocated memory is still 329.3MB. Free memory was 199.9MB in the beginning and 187.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 458]: 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, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1361 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1361 mSDsluCounter, 919 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 542 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3021 IncrementalHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 542 mSolverCounterUnsat, 805 mSDtfsCounter, 3021 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2695occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 155 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1050 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1041 ConstructedInterpolants, 0 QuantifiedInterpolants, 1583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 263/263 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((a25 == 1) && (a11 == 1)) && (a17 <= 8)) && (a28 <= 10)) || ((((a17 == 8) && (a25 == 1)) && (a19 == 1)) && (a28 <= 7))) || ((((a17 == 8) && (a25 == 1)) && (a11 <= 0)) && (a28 <= 10))) || ((((a17 == 8) && (a11 <= 0)) && (a28 <= 10)) && (a25 <= 0))) || ((((a11 == 1) && (a17 <= 8)) && (a28 <= 10)) && (a25 <= 0))) || ((((a17 == 8) && (a25 == 1)) && (a11 <= 0)) && (a19 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-11 16:06:11,768 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