./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Ackermann04.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 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:07:14,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:07:14,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:07:14,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:07:14,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:07:14,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:07:14,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:07:14,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:07:14,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:07:14,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:07:14,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:07:14,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:07:14,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:07:14,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:07:14,516 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:07:14,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:07:14,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:07:14,518 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:07:14,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:07:14,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:07:14,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:07:14,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:07:14,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:07:14,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:07:14,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:07:14,521 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:07:14,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:07:14,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:07:14,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:07:14,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:07:14,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:07:14,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:07:14,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:07:14,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:07:14,523 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:07:14,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:07:14,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 [2024-11-22 02:07:14,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:07:14,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:07:14,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:07:14,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:07:14,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:07:14,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann04.c [2024-11-22 02:07:16,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:07:16,154 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:07:16,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann04.c [2024-11-22 02:07:16,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24393aeb7/16fa857d38c349adadea97f31b19b26b/FLAG93308bdf9 [2024-11-22 02:07:16,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24393aeb7/16fa857d38c349adadea97f31b19b26b [2024-11-22 02:07:16,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:07:16,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:07:16,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:07:16,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:07:16,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:07:16,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c92b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16, skipping insertion in model container [2024-11-22 02:07:16,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:07:16,795 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/recursive/Ackermann04.c[1166,1179] [2024-11-22 02:07:16,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:07:16,806 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:07:16,816 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/recursive/Ackermann04.c[1166,1179] [2024-11-22 02:07:16,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:07:16,829 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:07:16,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16 WrapperNode [2024-11-22 02:07:16,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:07:16,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:07:16,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:07:16,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:07:16,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,852 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-22 02:07:16,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:07:16,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:07:16,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:07:16,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:07:16,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,876 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:07:16,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:07:16,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:07:16,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:07:16,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:07:16,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (1/1) ... [2024-11-22 02:07:16,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:07:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:16,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:07:16,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:07:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:07:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:07:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:07:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-11-22 02:07:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-11-22 02:07:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:07:17,004 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:07:17,006 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:07:17,136 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-22 02:07:17,136 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:07:17,150 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:07:17,152 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:07:17,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:17 BoogieIcfgContainer [2024-11-22 02:07:17,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:07:17,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:07:17,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:07:17,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:07:17,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:07:16" (1/3) ... [2024-11-22 02:07:17,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48488fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:17, skipping insertion in model container [2024-11-22 02:07:17,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:16" (2/3) ... [2024-11-22 02:07:17,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48488fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:17, skipping insertion in model container [2024-11-22 02:07:17,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:17" (3/3) ... [2024-11-22 02:07:17,161 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2024-11-22 02:07:17,179 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:07:17,179 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:07:17,235 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:07:17,241 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;@262dd422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:07:17,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:07:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 02:07:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 02:07:17,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:17,251 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:17,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:17,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2024-11-22 02:07:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152018966] [2024-11-22 02:07:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:17,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:07:17,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152018966] [2024-11-22 02:07:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152018966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:07:17,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:07:17,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:07:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021416133] [2024-11-22 02:07:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:07:17,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:07:17,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:07:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:17,504 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:07:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:17,638 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2024-11-22 02:07:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:07:17,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-22 02:07:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:17,648 INFO L225 Difference]: With dead ends: 37 [2024-11-22 02:07:17,649 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 02:07:17,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:07:17,654 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:17,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:17,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 02:07:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-22 02:07:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 02:07:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2024-11-22 02:07:17,686 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 12 [2024-11-22 02:07:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:17,686 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2024-11-22 02:07:17,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:07:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2024-11-22 02:07:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 02:07:17,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:17,688 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:17,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:07:17,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:17,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2024-11-22 02:07:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:17,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513968771] [2024-11-22 02:07:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:07:17,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:17,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513968771] [2024-11-22 02:07:17,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513968771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:17,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828595295] [2024-11-22 02:07:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:17,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:17,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:17,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:17,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:07:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:17,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 02:07:17,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:07:17,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:07:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828595295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:17,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 02:07:17,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31797793] [2024-11-22 02:07:17,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:17,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:07:17,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:17,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:07:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:07:17,978 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 02:07:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:18,103 INFO L93 Difference]: Finished difference Result 69 states and 124 transitions. [2024-11-22 02:07:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:07:18,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2024-11-22 02:07:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:18,107 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:07:18,107 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 02:07:18,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:07:18,109 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:18,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 02:07:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-11-22 02:07:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (27), 10 states have call predecessors, (27), 8 states have call successors, (27) [2024-11-22 02:07:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 66 transitions. [2024-11-22 02:07:18,132 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 66 transitions. Word has length 19 [2024-11-22 02:07:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:18,133 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 66 transitions. [2024-11-22 02:07:18,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 02:07:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 66 transitions. [2024-11-22 02:07:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 02:07:18,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:18,136 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:18,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:07:18,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:18,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:18,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash -574784801, now seen corresponding path program 1 times [2024-11-22 02:07:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:18,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108235701] [2024-11-22 02:07:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-22 02:07:18,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108235701] [2024-11-22 02:07:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108235701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:18,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852606572] [2024-11-22 02:07:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:18,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:18,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:18,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:07:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:18,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:07:18,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-22 02:07:18,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-22 02:07:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852606572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:19,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:19,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2024-11-22 02:07:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781742514] [2024-11-22 02:07:19,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:19,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:07:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:07:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:07:19,134 INFO L87 Difference]: Start difference. First operand 41 states and 66 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 02:07:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:19,228 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2024-11-22 02:07:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 02:07:19,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2024-11-22 02:07:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:19,231 INFO L225 Difference]: With dead ends: 62 [2024-11-22 02:07:19,231 INFO L226 Difference]: Without dead ends: 58 [2024-11-22 02:07:19,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:07:19,234 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:19,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 68 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-22 02:07:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-22 02:07:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 8 states have return successors, (60), 15 states have call predecessors, (60), 10 states have call successors, (60) [2024-11-22 02:07:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2024-11-22 02:07:19,250 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 45 [2024-11-22 02:07:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:19,250 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2024-11-22 02:07:19,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 02:07:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2024-11-22 02:07:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 02:07:19,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:19,253 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:19,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:19,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-22 02:07:19,458 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:19,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash -749766204, now seen corresponding path program 2 times [2024-11-22 02:07:19,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:19,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154914087] [2024-11-22 02:07:19,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:19,484 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:19,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 104 proven. 14 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-22 02:07:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154914087] [2024-11-22 02:07:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154914087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:19,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057946237] [2024-11-22 02:07:19,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:19,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:19,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:19,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:19,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:07:19,735 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:19,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:19,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 02:07:19,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-22 02:07:19,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-22 02:07:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057946237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:21,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 27 [2024-11-22 02:07:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674308684] [2024-11-22 02:07:21,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:21,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:07:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:07:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:07:21,179 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (12), 2 states have call predecessors, (12), 11 states have return successors, (24), 14 states have call predecessors, (24), 7 states have call successors, (24) [2024-11-22 02:07:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:22,148 INFO L93 Difference]: Finished difference Result 294 states and 1388 transitions. [2024-11-22 02:07:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 02:07:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (12), 2 states have call predecessors, (12), 11 states have return successors, (24), 14 states have call predecessors, (24), 7 states have call successors, (24) Word has length 79 [2024-11-22 02:07:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:22,169 INFO L225 Difference]: With dead ends: 294 [2024-11-22 02:07:22,170 INFO L226 Difference]: Without dead ends: 245 [2024-11-22 02:07:22,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=692, Invalid=2848, Unknown=0, NotChecked=0, Total=3540 [2024-11-22 02:07:22,175 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:22,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 176 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:07:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-22 02:07:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 92. [2024-11-22 02:07:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 60 states have internal predecessors, (62), 16 states have call successors, (16), 2 states have call predecessors, (16), 17 states have return successors, (194), 29 states have call predecessors, (194), 16 states have call successors, (194) [2024-11-22 02:07:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 272 transitions. [2024-11-22 02:07:22,248 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 272 transitions. Word has length 79 [2024-11-22 02:07:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:22,249 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 272 transitions. [2024-11-22 02:07:22,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (12), 2 states have call predecessors, (12), 11 states have return successors, (24), 14 states have call predecessors, (24), 7 states have call successors, (24) [2024-11-22 02:07:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 272 transitions. [2024-11-22 02:07:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 02:07:22,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:22,257 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:22,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 02:07:22,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:22,458 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:22,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1991913426, now seen corresponding path program 3 times [2024-11-22 02:07:22,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:22,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595122456] [2024-11-22 02:07:22,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:22,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:22,476 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 02:07:22,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 192 proven. 22 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-11-22 02:07:22,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:22,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595122456] [2024-11-22 02:07:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595122456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007645731] [2024-11-22 02:07:22,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:22,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:22,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:22,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:22,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:07:22,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 02:07:22,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:22,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:07:22,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 348 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-22 02:07:22,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 216 proven. 27 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-22 02:07:22,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007645731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:22,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:22,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-11-22 02:07:22,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430834354] [2024-11-22 02:07:22,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:22,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:07:22,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:07:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:07:22,960 INFO L87 Difference]: Start difference. First operand 92 states and 272 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-22 02:07:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:23,039 INFO L93 Difference]: Finished difference Result 144 states and 486 transitions. [2024-11-22 02:07:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:07:23,040 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 131 [2024-11-22 02:07:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:23,042 INFO L225 Difference]: With dead ends: 144 [2024-11-22 02:07:23,042 INFO L226 Difference]: Without dead ends: 57 [2024-11-22 02:07:23,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:07:23,044 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:23,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 89 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-22 02:07:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2024-11-22 02:07:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 8 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (36), 11 states have call predecessors, (36), 8 states have call successors, (36) [2024-11-22 02:07:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 79 transitions. [2024-11-22 02:07:23,056 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 79 transitions. Word has length 131 [2024-11-22 02:07:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:23,057 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 79 transitions. [2024-11-22 02:07:23,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-22 02:07:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 79 transitions. [2024-11-22 02:07:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-22 02:07:23,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:23,062 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 18, 13, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:23,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:23,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:23,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:23,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash 373404425, now seen corresponding path program 4 times [2024-11-22 02:07:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:23,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054663884] [2024-11-22 02:07:23,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:07:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:23,301 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:07:23,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 432 proven. 724 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2024-11-22 02:07:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:23,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054663884] [2024-11-22 02:07:23,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054663884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:23,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754192584] [2024-11-22 02:07:23,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:07:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:23,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:23,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:07:23,796 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:07:23,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:23,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:07:23,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 432 proven. 712 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2024-11-22 02:07:23,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 432 proven. 746 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2024-11-22 02:07:25,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754192584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:25,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:25,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 18 [2024-11-22 02:07:25,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297847789] [2024-11-22 02:07:25,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:25,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:07:25,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:07:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:07:25,879 INFO L87 Difference]: Start difference. First operand 48 states and 79 transitions. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 13 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (28), 7 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-22 02:07:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:26,072 INFO L93 Difference]: Finished difference Result 122 states and 280 transitions. [2024-11-22 02:07:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:07:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 13 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (28), 7 states have call predecessors, (28), 13 states have call successors, (28) Word has length 210 [2024-11-22 02:07:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:26,074 INFO L225 Difference]: With dead ends: 122 [2024-11-22 02:07:26,074 INFO L226 Difference]: Without dead ends: 79 [2024-11-22 02:07:26,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 415 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:07:26,076 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 97 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:26,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 153 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-22 02:07:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-22 02:07:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 55 states have internal predecessors, (60), 15 states have call successors, (15), 7 states have call predecessors, (15), 11 states have return successors, (68), 16 states have call predecessors, (68), 15 states have call successors, (68) [2024-11-22 02:07:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 143 transitions. [2024-11-22 02:07:26,086 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 143 transitions. Word has length 210 [2024-11-22 02:07:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:26,086 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 143 transitions. [2024-11-22 02:07:26,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 13 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (28), 7 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-22 02:07:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 143 transitions. [2024-11-22 02:07:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 02:07:26,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:26,088 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 10, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:26,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:07:26,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:26,292 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:26,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -270180431, now seen corresponding path program 5 times [2024-11-22 02:07:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:26,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800822949] [2024-11-22 02:07:26,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:07:26,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:26,306 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-22 02:07:26,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 112 proven. 247 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-11-22 02:07:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800822949] [2024-11-22 02:07:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800822949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299281612] [2024-11-22 02:07:26,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:07:26,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:26,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:26,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:26,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:07:26,694 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-22 02:07:26,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:26,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 02:07:26,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 385 proven. 71 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-22 02:07:26,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 126 proven. 215 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-22 02:07:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299281612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:28,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:28,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 16] total 28 [2024-11-22 02:07:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439243200] [2024-11-22 02:07:28,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:28,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:07:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:07:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:07:28,096 INFO L87 Difference]: Start difference. First operand 79 states and 143 transitions. Second operand has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29) [2024-11-22 02:07:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:29,061 INFO L93 Difference]: Finished difference Result 229 states and 473 transitions. [2024-11-22 02:07:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-22 02:07:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29) Word has length 118 [2024-11-22 02:07:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:29,063 INFO L225 Difference]: With dead ends: 229 [2024-11-22 02:07:29,064 INFO L226 Difference]: Without dead ends: 148 [2024-11-22 02:07:29,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 222 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=852, Invalid=3308, Unknown=0, NotChecked=0, Total=4160 [2024-11-22 02:07:29,067 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:29,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 234 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:07:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-22 02:07:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 101. [2024-11-22 02:07:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 69 states have internal predecessors, (74), 19 states have call successors, (19), 9 states have call predecessors, (19), 14 states have return successors, (60), 22 states have call predecessors, (60), 19 states have call successors, (60) [2024-11-22 02:07:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2024-11-22 02:07:29,088 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 118 [2024-11-22 02:07:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:29,089 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 153 transitions. [2024-11-22 02:07:29,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29) [2024-11-22 02:07:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions. [2024-11-22 02:07:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 02:07:29,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:29,091 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:29,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:07:29,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:29,297 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:29,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1811622132, now seen corresponding path program 6 times [2024-11-22 02:07:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41201217] [2024-11-22 02:07:29,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:07:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:29,343 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-22 02:07:29,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 141 proven. 306 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-22 02:07:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41201217] [2024-11-22 02:07:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41201217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44838659] [2024-11-22 02:07:29,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:07:29,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:29,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:29,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:29,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:07:29,733 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-22 02:07:29,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:29,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 02:07:29,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 475 proven. 114 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-22 02:07:29,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 155 proven. 295 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-22 02:07:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44838659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:30,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 17] total 22 [2024-11-22 02:07:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411820666] [2024-11-22 02:07:30,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:30,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:07:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:07:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:07:30,955 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-22 02:07:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:31,219 INFO L93 Difference]: Finished difference Result 193 states and 343 transitions. [2024-11-22 02:07:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 02:07:31,220 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) Word has length 131 [2024-11-22 02:07:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:31,222 INFO L225 Difference]: With dead ends: 193 [2024-11-22 02:07:31,223 INFO L226 Difference]: Without dead ends: 100 [2024-11-22 02:07:31,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 249 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:07:31,225 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:31,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 164 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-22 02:07:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-22 02:07:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 68 states have internal predecessors, (73), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (59), 22 states have call predecessors, (59), 18 states have call successors, (59) [2024-11-22 02:07:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 150 transitions. [2024-11-22 02:07:31,239 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 150 transitions. Word has length 131 [2024-11-22 02:07:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:31,239 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 150 transitions. [2024-11-22 02:07:31,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-22 02:07:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 150 transitions. [2024-11-22 02:07:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 02:07:31,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:31,241 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:31,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:31,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:31,442 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:31,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1701842998, now seen corresponding path program 7 times [2024-11-22 02:07:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:31,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504907769] [2024-11-22 02:07:31,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:07:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 439 proven. 281 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2024-11-22 02:07:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504907769] [2024-11-22 02:07:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504907769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908607544] [2024-11-22 02:07:31,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:07:31,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:31,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:31,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:31,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:07:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:32,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 02:07:32,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-11-22 02:07:32,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-11-22 02:07:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908607544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:35,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:35,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 27] total 35 [2024-11-22 02:07:35,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766802006] [2024-11-22 02:07:35,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:35,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:07:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:07:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:07:35,018 INFO L87 Difference]: Start difference. First operand 100 states and 150 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 29 states have internal predecessors, (75), 14 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (32), 17 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-22 02:07:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:35,725 INFO L93 Difference]: Finished difference Result 224 states and 396 transitions. [2024-11-22 02:07:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 02:07:35,728 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 29 states have internal predecessors, (75), 14 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (32), 17 states have call predecessors, (32), 14 states have call successors, (32) Word has length 157 [2024-11-22 02:07:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:35,730 INFO L225 Difference]: With dead ends: 224 [2024-11-22 02:07:35,731 INFO L226 Difference]: Without dead ends: 133 [2024-11-22 02:07:35,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 297 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=817, Invalid=3605, Unknown=0, NotChecked=0, Total=4422 [2024-11-22 02:07:35,735 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 68 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:35,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 277 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:07:35,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-22 02:07:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2024-11-22 02:07:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 77 states have internal predecessors, (82), 21 states have call successors, (21), 9 states have call predecessors, (21), 17 states have return successors, (80), 28 states have call predecessors, (80), 21 states have call successors, (80) [2024-11-22 02:07:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 183 transitions. [2024-11-22 02:07:35,748 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 183 transitions. Word has length 157 [2024-11-22 02:07:35,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:35,752 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 183 transitions. [2024-11-22 02:07:35,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 29 states have internal predecessors, (75), 14 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (32), 17 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-22 02:07:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 183 transitions. [2024-11-22 02:07:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-22 02:07:35,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:35,753 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:35,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:07:35,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-22 02:07:35,958 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:35,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash 332854534, now seen corresponding path program 8 times [2024-11-22 02:07:35,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:35,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077902698] [2024-11-22 02:07:35,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:35,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:35,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 74 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2024-11-22 02:07:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077902698] [2024-11-22 02:07:36,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077902698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215031437] [2024-11-22 02:07:36,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:36,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:36,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:36,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:36,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:07:36,691 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:36,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:36,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 02:07:36,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-11-22 02:07:36,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 711 proven. 75 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-11-22 02:07:41,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215031437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:41,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:41,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 33] total 38 [2024-11-22 02:07:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752877232] [2024-11-22 02:07:41,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:41,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 02:07:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 02:07:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:07:41,820 INFO L87 Difference]: Start difference. First operand 115 states and 183 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-22 02:07:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:42,790 INFO L93 Difference]: Finished difference Result 192 states and 341 transitions. [2024-11-22 02:07:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-22 02:07:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 183 [2024-11-22 02:07:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:42,792 INFO L225 Difference]: With dead ends: 192 [2024-11-22 02:07:42,793 INFO L226 Difference]: Without dead ends: 188 [2024-11-22 02:07:42,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 343 SyntacticMatches, 20 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1027, Invalid=4673, Unknown=0, NotChecked=0, Total=5700 [2024-11-22 02:07:42,796 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:42,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 325 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:07:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-22 02:07:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 138. [2024-11-22 02:07:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.065934065934066) internal successors, (97), 92 states have internal predecessors, (97), 22 states have call successors, (22), 9 states have call predecessors, (22), 24 states have return successors, (121), 36 states have call predecessors, (121), 22 states have call successors, (121) [2024-11-22 02:07:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 240 transitions. [2024-11-22 02:07:42,814 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 240 transitions. Word has length 183 [2024-11-22 02:07:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:42,814 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 240 transitions. [2024-11-22 02:07:42,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-22 02:07:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 240 transitions. [2024-11-22 02:07:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-22 02:07:42,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:42,816 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:42,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:43,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:07:43,017 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:43,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash -860565711, now seen corresponding path program 9 times [2024-11-22 02:07:43,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:43,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742499514] [2024-11-22 02:07:43,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:43,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:43,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-22 02:07:43,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 387 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-22 02:07:43,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:43,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742499514] [2024-11-22 02:07:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742499514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:43,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946980007] [2024-11-22 02:07:43,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:43,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:43,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:43,554 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:43,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:07:43,762 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-22 02:07:43,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:43,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 02:07:43,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-11-22 02:07:43,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-11-22 02:07:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946980007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:46,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:46,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 28] total 35 [2024-11-22 02:07:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352299049] [2024-11-22 02:07:46,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:46,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:07:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:07:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:07:46,956 INFO L87 Difference]: Start difference. First operand 138 states and 240 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (35), 16 states have call predecessors, (35), 17 states have call successors, (35) [2024-11-22 02:07:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:47,529 INFO L93 Difference]: Finished difference Result 282 states and 570 transitions. [2024-11-22 02:07:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-22 02:07:47,529 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (35), 16 states have call predecessors, (35), 17 states have call successors, (35) Word has length 170 [2024-11-22 02:07:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:47,532 INFO L225 Difference]: With dead ends: 282 [2024-11-22 02:07:47,532 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 02:07:47,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 320 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=993, Invalid=3977, Unknown=0, NotChecked=0, Total=4970 [2024-11-22 02:07:47,536 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 118 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:47,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 211 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:07:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 02:07:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 02:07:47,536 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) [2024-11-22 02:07:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 02:07:47,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2024-11-22 02:07:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:47,537 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 02:07:47,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (35), 16 states have call predecessors, (35), 17 states have call successors, (35) [2024-11-22 02:07:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 02:07:47,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 02:07:47,540 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:07:47,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:47,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 02:07:47,744 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1] [2024-11-22 02:07:47,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 02:07:54,955 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 02:07:54,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:07:54 BoogieIcfgContainer [2024-11-22 02:07:54,987 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 02:07:54,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 02:07:54,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 02:07:54,988 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 02:07:54,988 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:17" (3/4) ... [2024-11-22 02:07:54,990 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 02:07:54,994 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2024-11-22 02:07:54,997 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 02:07:54,998 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-22 02:07:54,998 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 02:07:54,998 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 02:07:55,069 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 02:07:55,069 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 02:07:55,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 02:07:55,070 INFO L158 Benchmark]: Toolchain (without parser) took 38490.81ms. Allocated memory was 157.3MB in the beginning and 935.3MB in the end (delta: 778.0MB). Free memory was 91.0MB in the beginning and 670.2MB in the end (delta: -579.2MB). Peak memory consumption was 200.1MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,070 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:07:55,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.94ms. Allocated memory is still 157.3MB. Free memory was 90.7MB in the beginning and 126.5MB in the end (delta: -35.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.67ms. Allocated memory is still 157.3MB. Free memory was 126.5MB in the beginning and 125.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,070 INFO L158 Benchmark]: Boogie Preprocessor took 28.58ms. Allocated memory is still 157.3MB. Free memory was 125.1MB in the beginning and 123.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,071 INFO L158 Benchmark]: RCFGBuilder took 270.90ms. Allocated memory is still 157.3MB. Free memory was 123.6MB in the beginning and 112.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,071 INFO L158 Benchmark]: TraceAbstraction took 37832.27ms. Allocated memory was 157.3MB in the beginning and 935.3MB in the end (delta: 778.0MB). Free memory was 111.9MB in the beginning and 674.4MB in the end (delta: -562.5MB). Peak memory consumption was 561.3MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,071 INFO L158 Benchmark]: Witness Printer took 81.50ms. Allocated memory is still 935.3MB. Free memory was 674.4MB in the beginning and 670.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 02:07:55,072 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.94ms. Allocated memory is still 157.3MB. Free memory was 90.7MB in the beginning and 126.5MB in the end (delta: -35.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.67ms. Allocated memory is still 157.3MB. Free memory was 126.5MB in the beginning and 125.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.58ms. Allocated memory is still 157.3MB. Free memory was 125.1MB in the beginning and 123.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.90ms. Allocated memory is still 157.3MB. Free memory was 123.6MB in the beginning and 112.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 37832.27ms. Allocated memory was 157.3MB in the beginning and 935.3MB in the end (delta: 778.0MB). Free memory was 111.9MB in the beginning and 674.4MB in the end (delta: -562.5MB). Peak memory consumption was 561.3MB. Max. memory is 16.1GB. * Witness Printer took 81.50ms. Allocated memory is still 935.3MB. Free memory was 674.4MB in the beginning and 670.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: 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 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.5s, OverallIterations: 11, TraceHistogramMax: 31, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 584 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 548 mSDsluCounter, 1834 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1545 mSDsCounter, 727 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4420 IncrementalHoareTripleChecker+Invalid, 5147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 727 mSolverCounterUnsat, 289 mSDtfsCounter, 4420 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2881 GetRequests, 2367 SyntacticMatches, 91 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6335 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=10, InterpolantAutomatonStates: 274, 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, 11 MinimizatonAttempts, 287 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 2498 NumberOfCodeBlocks, 2154 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 3710 ConstructedInterpolants, 0 QuantifiedInterpolants, 6974 SizeOfPredicates, 36 NumberOfNonLiveVariables, 3267 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 22427/28332 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 - ProcedureContractResult [Line: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((((n == 0) || (0 < n)) || ((m == 0) && (((long long) n + 1) <= \result))) && (((((((((m == 2) && (5 <= \result)) && (n <= 1)) || ((7 <= \result) && (2 <= m))) || (((n == 0) && (2 <= m)) && (3 <= \result))) || (((2 <= m) && (6 <= \result)) && (n <= 1))) || ((m == 1) && (3 <= \result))) || ((m == 0) && (((long long) n + 1) <= \result))) || (((2 <= \result) && (n <= 0)) && (m == 1)))) && ((((((6 < \result) || ((n <= 4) && (\result == 6))) || (n < 2)) || ((m == 0) && (((long long) n + 1) <= \result))) || ((4 <= \result) && (n == 2))) || ((n <= 3) && (5 <= \result)))) RESULT: Ultimate proved your program to be correct! [2024-11-22 02:07:55,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE