./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_15-2.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-simple/fibo_2calls_15-2.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 d89b24ddcb39bc81f78fa19f2306b45fb625208ffa4463b75f31372afe08085d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:09:03,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:09:03,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:09:03,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:09:03,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:09:03,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:09:03,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:09:03,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:09:03,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:09:03,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:09:03,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:09:03,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:09:03,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:09:03,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:09:03,986 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:09:03,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:09:03,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:09:03,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:09:03,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:09:03,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:09:03,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:09:03,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:09:03,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:09:03,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:09:03,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:09:03,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:09:03,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:09:03,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:09:03,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:09:03,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:09:03,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:09:03,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:09:03,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:03,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:09:03,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:09:03,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:09:03,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:09:03,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:09:03,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:09:03,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:09:03,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:09:03,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:09:03,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d89b24ddcb39bc81f78fa19f2306b45fb625208ffa4463b75f31372afe08085d [2024-11-22 02:09:04,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:09:04,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:09:04,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:09:04,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:09:04,312 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:09:04,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_15-2.c [2024-11-22 02:09:05,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:09:05,834 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:09:05,835 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_15-2.c [2024-11-22 02:09:05,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c7ea3ea/d727dd6f583b4713bdb5ff05d122f1c7/FLAG0f819fb4d [2024-11-22 02:09:06,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c7ea3ea/d727dd6f583b4713bdb5ff05d122f1c7 [2024-11-22 02:09:06,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:09:06,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:09:06,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:06,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:09:06,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:09:06,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b7e6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06, skipping insertion in model container [2024-11-22 02:09:06,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:09:06,347 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-simple/fibo_2calls_15-2.c[950,963] [2024-11-22 02:09:06,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:06,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:09:06,368 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-simple/fibo_2calls_15-2.c[950,963] [2024-11-22 02:09:06,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:06,381 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:09:06,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06 WrapperNode [2024-11-22 02:09:06,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:06,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:06,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:09:06,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:09:06,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,405 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:09:06,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:06,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:09:06,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:09:06,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:09:06,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,427 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 02:09:06,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:09:06,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:09:06,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:09:06,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:09:06,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (1/1) ... [2024-11-22 02:09:06,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:06,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:06,471 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 02:09:06,476 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 02:09:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:09:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:09:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:09:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:09:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:09:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:09:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:09:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:09:06,559 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:09:06,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:09:06,652 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:09:06,652 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:09:06,661 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:09:06,662 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:09:06,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:06 BoogieIcfgContainer [2024-11-22 02:09:06,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:09:06,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:09:06,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:09:06,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:09:06,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:09:06" (1/3) ... [2024-11-22 02:09:06,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d631ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:06, skipping insertion in model container [2024-11-22 02:09:06,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:06" (2/3) ... [2024-11-22 02:09:06,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d631ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:06, skipping insertion in model container [2024-11-22 02:09:06,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:06" (3/3) ... [2024-11-22 02:09:06,669 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-2.c [2024-11-22 02:09:06,681 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:09:06,682 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:09:06,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:09:06,729 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;@2e7b730b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:09:06,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:09:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:09:06,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:06,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:06,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:06,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:09:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669731774] [2024-11-22 02:09:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:06,958 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 02:09:06,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669731774] [2024-11-22 02:09:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669731774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:06,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132414558] [2024-11-22 02:09:06,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:06,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:06,992 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 02:09:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:07,063 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-22 02:09:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 10 [2024-11-22 02:09:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:07,071 INFO L225 Difference]: With dead ends: 41 [2024-11-22 02:09:07,071 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:09:07,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:07,076 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:07,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:09:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:09:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:09:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:07,107 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:09:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:07,108 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:07,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 02:09:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:09:07,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:07,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:07,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:09:07,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:07,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-22 02:09:07,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:07,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154589285] [2024-11-22 02:09:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:07,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:07,167 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 02:09:07,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154589285] [2024-11-22 02:09:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154589285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:07,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:07,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546068896] [2024-11-22 02:09:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:07,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:07,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:07,174 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 02:09:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:07,269 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-22 02:09:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:07,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2024-11-22 02:09:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:07,271 INFO L225 Difference]: With dead ends: 33 [2024-11-22 02:09:07,271 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:09:07,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:07,272 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:07,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:09:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:09:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:07,278 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-22 02:09:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:07,278 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:07,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 02:09:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:09:07,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:07,279 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:07,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:09:07,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:07,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:09:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413192181] [2024-11-22 02:09:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:07,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:07,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413192181] [2024-11-22 02:09:07,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413192181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842622879] [2024-11-22 02:09:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:07,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:07,366 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 02:09:07,367 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 02:09:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:07,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:07,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:07,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842622879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:07,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:07,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:09:07,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085992506] [2024-11-22 02:09:07,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:07,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:09:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:09:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:09:07,629 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:09:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:07,731 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-22 02:09:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:07,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-22 02:09:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:07,733 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:09:07,733 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:09:07,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:07,734 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:07,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:09:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-22 02:09:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:09:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-22 02:09:07,740 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-22 02:09:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:07,740 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-22 02:09:07,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:09:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-22 02:09:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:09:07,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:07,742 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:07,748 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 02:09:07,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:07,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:07,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:07,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:09:07,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:07,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336399676] [2024-11-22 02:09:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336399676] [2024-11-22 02:09:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336399676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268166930] [2024-11-22 02:09:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:08,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:08,062 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 02:09:08,065 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 02:09:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:08,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:08,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:08,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268166930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:08,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:08,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:09:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303823447] [2024-11-22 02:09:08,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:08,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:09:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:09:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:08,358 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:08,548 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-22 02:09:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:09:08,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-22 02:09:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:08,550 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:09:08,550 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:09:08,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:09:08,551 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:08,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:09:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 02:09:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:09:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-22 02:09:08,569 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-22 02:09:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:08,570 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-22 02:09:08,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-22 02:09:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:09:08,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:08,573 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:08,580 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 02:09:08,776 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,SelfDestructingSolverStorable3 [2024-11-22 02:09:08,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:08,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:09:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:08,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656020468] [2024-11-22 02:09:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:09:08,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656020468] [2024-11-22 02:09:08,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656020468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:08,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952101927] [2024-11-22 02:09:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:08,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:08,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:08,918 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 02:09:08,922 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 02:09:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:08,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:08,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:09:09,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:09:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952101927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:09,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-22 02:09:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694643544] [2024-11-22 02:09:09,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:09,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:09:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:09,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:09:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:09,567 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:09,713 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-22 02:09:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:09:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-22 02:09:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:09,715 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:09:09,716 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:09:09,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:09,717 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:09,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:09:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 02:09:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:09:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-22 02:09:09,724 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-22 02:09:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:09,725 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-22 02:09:09,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-22 02:09:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:09:09,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:09,726 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:09,736 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 02:09:09,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:09,928 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:09,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:09,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-22 02:09:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535946047] [2024-11-22 02:09:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:09:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535946047] [2024-11-22 02:09:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535946047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720226400] [2024-11-22 02:09:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:10,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:10,085 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 02:09:10,086 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 02:09:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:10,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:10,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:09:10,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:09:10,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720226400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:10,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:10,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-22 02:09:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117017271] [2024-11-22 02:09:10,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:10,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:10,555 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:10,959 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-22 02:09:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:09:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-22 02:09:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:10,962 INFO L225 Difference]: With dead ends: 101 [2024-11-22 02:09:10,962 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:09:10,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:09:10,964 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:10,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:09:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-22 02:09:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-22 02:09:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-22 02:09:10,975 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-22 02:09:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:10,976 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-22 02:09:10,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-22 02:09:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 02:09:10,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:10,978 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:10,987 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 02:09:11,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:11,183 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:11,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-22 02:09:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106390766] [2024-11-22 02:09:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:09:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106390766] [2024-11-22 02:09:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106390766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564796920] [2024-11-22 02:09:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:11,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:11,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:11,308 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 02:09:11,309 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 02:09:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:11,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:11,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 02:09:11,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:09:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564796920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:11,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:11,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-22 02:09:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105485906] [2024-11-22 02:09:11,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:11,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:11,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:11,905 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:09:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:12,084 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-22 02:09:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-22 02:09:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:12,087 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:09:12,087 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 02:09:12,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:12,088 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:12,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 164 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 02:09:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-22 02:09:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-22 02:09:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-22 02:09:12,105 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-22 02:09:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:12,105 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-22 02:09:12,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:09:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-22 02:09:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:09:12,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:12,108 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:12,117 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 02:09:12,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:12,309 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:12,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-22 02:09:12,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:12,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159719820] [2024-11-22 02:09:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-22 02:09:12,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159719820] [2024-11-22 02:09:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159719820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77305393] [2024-11-22 02:09:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:12,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:12,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:12,469 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 02:09:12,470 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 02:09:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:12,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:12,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-22 02:09:12,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-22 02:09:13,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77305393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:13,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:13,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-22 02:09:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355350093] [2024-11-22 02:09:13,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:13,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:13,538 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:09:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:14,185 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-22 02:09:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:09:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2024-11-22 02:09:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:14,188 INFO L225 Difference]: With dead ends: 177 [2024-11-22 02:09:14,188 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 02:09:14,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:09:14,195 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:14,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:09:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 02:09:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-22 02:09:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-22 02:09:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-22 02:09:14,226 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-22 02:09:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:14,229 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-22 02:09:14,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:09:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-22 02:09:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:09:14,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:14,235 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:14,245 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 02:09:14,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:14,440 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:14,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-22 02:09:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:14,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093669198] [2024-11-22 02:09:14,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:14,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:14,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-22 02:09:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:14,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093669198] [2024-11-22 02:09:14,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093669198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:14,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231179613] [2024-11-22 02:09:14,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:14,707 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 02:09:14,708 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 02:09:14,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:14,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:14,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:14,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-22 02:09:14,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-22 02:09:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231179613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:16,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:16,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-22 02:09:16,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918137998] [2024-11-22 02:09:16,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:16,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:16,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:16,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:16,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:16,360 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:09:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:16,662 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-22 02:09:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:09:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2024-11-22 02:09:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:16,665 INFO L225 Difference]: With dead ends: 132 [2024-11-22 02:09:16,665 INFO L226 Difference]: Without dead ends: 128 [2024-11-22 02:09:16,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:09:16,666 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:16,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 196 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-22 02:09:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-22 02:09:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-22 02:09:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-22 02:09:16,681 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-22 02:09:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:16,681 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-22 02:09:16,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:09:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-22 02:09:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-22 02:09:16,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:16,684 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:16,691 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 02:09:16,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:16,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:16,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-22 02:09:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482827537] [2024-11-22 02:09:16,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:16,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:16,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-22 02:09:17,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482827537] [2024-11-22 02:09:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482827537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340926154] [2024-11-22 02:09:17,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:17,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:17,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:17,292 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 02:09:17,295 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 02:09:17,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:17,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:17,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:09:17,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-22 02:09:17,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-22 02:09:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340926154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:19,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 29 [2024-11-22 02:09:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677352016] [2024-11-22 02:09:19,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:19,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:09:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:09:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:09:19,476 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-22 02:09:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:20,378 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-22 02:09:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:09:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) Word has length 284 [2024-11-22 02:09:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:20,383 INFO L225 Difference]: With dead ends: 323 [2024-11-22 02:09:20,383 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:09:20,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=2413, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:09:20,387 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 158 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:20,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 449 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:09:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:09:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-22 02:09:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-22 02:09:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-22 02:09:20,434 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-22 02:09:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:20,435 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-22 02:09:20,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-22 02:09:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-22 02:09:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-22 02:09:20,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:20,440 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 25, 25, 24, 19, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:20,450 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 02:09:20,644 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,SelfDestructingSolverStorable9 [2024-11-22 02:09:20,645 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:20,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1695767594, now seen corresponding path program 3 times [2024-11-22 02:09:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225501376] [2024-11-22 02:09:20,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:20,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:09:20,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 515 proven. 4 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2024-11-22 02:09:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225501376] [2024-11-22 02:09:20,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225501376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468839089] [2024-11-22 02:09:20,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:20,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:20,780 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 02:09:20,781 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 02:09:20,904 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:09:20,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:20,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:20,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 760 proven. 6 refuted. 0 times theorem prover too weak. 3609 trivial. 0 not checked. [2024-11-22 02:09:20,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 619 proven. 12 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2024-11-22 02:09:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468839089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:21,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:21,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 02:09:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317104151] [2024-11-22 02:09:21,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:21,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:09:21,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:09:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:09:21,926 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-22 02:09:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:22,074 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2024-11-22 02:09:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:09:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) Word has length 389 [2024-11-22 02:09:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:22,076 INFO L225 Difference]: With dead ends: 360 [2024-11-22 02:09:22,076 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 02:09:22,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 767 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:09:22,079 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:22,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 02:09:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-22 02:09:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 116 states have internal predecessors, (138), 33 states have call successors, (33), 18 states have call predecessors, (33), 22 states have return successors, (95), 39 states have call predecessors, (95), 33 states have call successors, (95) [2024-11-22 02:09:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2024-11-22 02:09:22,101 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 389 [2024-11-22 02:09:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:22,101 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2024-11-22 02:09:22,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-22 02:09:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2024-11-22 02:09:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-22 02:09:22,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:22,108 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 28, 27, 19, 19, 19, 19, 19, 19, 19, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:22,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:09:22,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:22,313 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:22,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2024-11-22 02:09:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736389648] [2024-11-22 02:09:22,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:22,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:22,348 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:22,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 196 proven. 801 refuted. 0 times theorem prover too weak. 5216 trivial. 0 not checked. [2024-11-22 02:09:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736389648] [2024-11-22 02:09:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736389648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464010709] [2024-11-22 02:09:22,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:22,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:22,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:22,560 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 02:09:22,565 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 02:09:22,710 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:22,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:22,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:22,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 1477 proven. 19 refuted. 0 times theorem prover too weak. 4717 trivial. 0 not checked. [2024-11-22 02:09:22,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 196 proven. 927 refuted. 0 times theorem prover too weak. 5090 trivial. 0 not checked. [2024-11-22 02:09:24,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464010709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:24,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:24,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 17 [2024-11-22 02:09:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465938641] [2024-11-22 02:09:24,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:24,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:24,383 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 02:09:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:24,558 INFO L93 Difference]: Finished difference Result 327 states and 532 transitions. [2024-11-22 02:09:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:09:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) Word has length 461 [2024-11-22 02:09:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:24,560 INFO L225 Difference]: With dead ends: 327 [2024-11-22 02:09:24,560 INFO L226 Difference]: Without dead ends: 139 [2024-11-22 02:09:24,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 911 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:24,565 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:24,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 211 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-22 02:09:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-22 02:09:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 95 states have internal predecessors, (112), 24 states have call successors, (24), 16 states have call predecessors, (24), 18 states have return successors, (67), 27 states have call predecessors, (67), 24 states have call successors, (67) [2024-11-22 02:09:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 203 transitions. [2024-11-22 02:09:24,578 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 203 transitions. Word has length 461 [2024-11-22 02:09:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:24,578 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 203 transitions. [2024-11-22 02:09:24,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 02:09:24,578 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 203 transitions. [2024-11-22 02:09:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-22 02:09:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:24,581 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 31, 31, 28, 28, 19, 19, 19, 19, 19, 19, 19, 15, 15, 15, 15, 15, 15, 15, 13, 10, 9, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:24,591 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 02:09:24,784 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,SelfDestructingSolverStorable11 [2024-11-22 02:09:24,785 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:24,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1622557946, now seen corresponding path program 5 times [2024-11-22 02:09:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253328724] [2024-11-22 02:09:24,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:24,827 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 02:09:24,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6532 backedges. 276 proven. 613 refuted. 0 times theorem prover too weak. 5643 trivial. 0 not checked. [2024-11-22 02:09:24,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:24,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253328724] [2024-11-22 02:09:24,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253328724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:24,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099053780] [2024-11-22 02:09:24,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:24,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:24,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:24,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:24,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:09:25,018 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 02:09:25,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:25,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:25,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6532 backedges. 1990 proven. 4 refuted. 0 times theorem prover too weak. 4538 trivial. 0 not checked. [2024-11-22 02:09:25,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6532 backedges. 276 proven. 613 refuted. 0 times theorem prover too weak. 5643 trivial. 0 not checked. [2024-11-22 02:09:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099053780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:26,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:09:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938409601] [2024-11-22 02:09:26,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:26,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:09:26,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:09:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:26,238 INFO L87 Difference]: Start difference. First operand 139 states and 203 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-22 02:09:26,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:26,319 INFO L93 Difference]: Finished difference Result 262 states and 421 transitions. [2024-11-22 02:09:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:26,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 474 [2024-11-22 02:09:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:26,322 INFO L225 Difference]: With dead ends: 262 [2024-11-22 02:09:26,322 INFO L226 Difference]: Without dead ends: 129 [2024-11-22 02:09:26,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 942 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:26,326 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:26,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 124 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-22 02:09:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-22 02:09:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 88 states have internal predecessors, (104), 22 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (61), 24 states have call predecessors, (61), 22 states have call successors, (61) [2024-11-22 02:09:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2024-11-22 02:09:26,338 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 187 transitions. Word has length 474 [2024-11-22 02:09:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:26,338 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 187 transitions. [2024-11-22 02:09:26,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-22 02:09:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 187 transitions. [2024-11-22 02:09:26,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-22 02:09:26,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:26,340 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 21, 20, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:26,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:26,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:09:26,545 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:26,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash 49150599, now seen corresponding path program 6 times [2024-11-22 02:09:26,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:26,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369688860] [2024-11-22 02:09:26,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:26,614 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:09:26,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 515 proven. 85 refuted. 0 times theorem prover too weak. 2876 trivial. 0 not checked. [2024-11-22 02:09:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369688860] [2024-11-22 02:09:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369688860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293048197] [2024-11-22 02:09:26,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:26,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:26,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:26,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:09:26,995 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:09:26,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:26,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:27,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 526 proven. 88 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2024-11-22 02:09:27,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 530 proven. 94 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2024-11-22 02:09:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293048197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:28,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:28,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 18 [2024-11-22 02:09:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042684427] [2024-11-22 02:09:28,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:28,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:28,147 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. Second operand has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-22 02:09:28,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:28,314 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2024-11-22 02:09:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:28,315 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) Word has length 351 [2024-11-22 02:09:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:28,316 INFO L225 Difference]: With dead ends: 151 [2024-11-22 02:09:28,316 INFO L226 Difference]: Without dead ends: 147 [2024-11-22 02:09:28,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 692 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:28,317 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:28,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 189 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-22 02:09:28,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2024-11-22 02:09:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 93 states have internal predecessors, (109), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (71), 26 states have call predecessors, (71), 25 states have call successors, (71) [2024-11-22 02:09:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 205 transitions. [2024-11-22 02:09:28,330 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 205 transitions. Word has length 351 [2024-11-22 02:09:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:28,332 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 205 transitions. [2024-11-22 02:09:28,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-22 02:09:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 205 transitions. [2024-11-22 02:09:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 02:09:28,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:28,334 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 25, 22, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 10, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:28,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 02:09:28,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:09:28,535 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:28,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1933855095, now seen corresponding path program 7 times [2024-11-22 02:09:28,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:28,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348220165] [2024-11-22 02:09:28,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:28,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 188 proven. 676 refuted. 0 times theorem prover too weak. 3815 trivial. 0 not checked. [2024-11-22 02:09:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348220165] [2024-11-22 02:09:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348220165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419203956] [2024-11-22 02:09:28,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:28,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:28,900 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:28,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:09:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:29,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:29,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 134 proven. 993 refuted. 0 times theorem prover too weak. 3552 trivial. 0 not checked. [2024-11-22 02:09:29,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 134 proven. 1026 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2024-11-22 02:09:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419203956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:32,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 19] total 26 [2024-11-22 02:09:32,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272314112] [2024-11-22 02:09:32,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:32,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:09:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:09:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:09:32,208 INFO L87 Difference]: Start difference. First operand 137 states and 205 transitions. Second operand has 26 states, 24 states have (on average 3.625) internal successors, (87), 26 states have internal predecessors, (87), 22 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:09:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:32,548 INFO L93 Difference]: Finished difference Result 189 states and 340 transitions. [2024-11-22 02:09:32,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:09:32,549 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 26 states have internal predecessors, (87), 22 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) Word has length 405 [2024-11-22 02:09:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:32,552 INFO L225 Difference]: With dead ends: 189 [2024-11-22 02:09:32,552 INFO L226 Difference]: Without dead ends: 185 [2024-11-22 02:09:32,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 791 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 02:09:32,553 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:32,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 262 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-22 02:09:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2024-11-22 02:09:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 115 states have internal predecessors, (131), 33 states have call successors, (33), 17 states have call predecessors, (33), 23 states have return successors, (139), 41 states have call predecessors, (139), 33 states have call successors, (139) [2024-11-22 02:09:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 303 transitions. [2024-11-22 02:09:32,572 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 303 transitions. Word has length 405 [2024-11-22 02:09:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:32,572 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 303 transitions. [2024-11-22 02:09:32,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 26 states have internal predecessors, (87), 22 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:09:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 303 transitions. [2024-11-22 02:09:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-11-22 02:09:32,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:32,582 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 53, 51, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 21, 19, 13, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:32,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 02:09:32,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:09:32,785 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:32,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1877727516, now seen corresponding path program 8 times [2024-11-22 02:09:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:32,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995422038] [2024-11-22 02:09:32,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:32,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:32,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 520 proven. 2314 refuted. 0 times theorem prover too weak. 20171 trivial. 0 not checked. [2024-11-22 02:09:33,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:33,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995422038] [2024-11-22 02:09:33,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995422038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:33,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237447879] [2024-11-22 02:09:33,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:33,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:33,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:33,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:33,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:09:34,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:34,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:34,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1977 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:34,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 374 proven. 2638 refuted. 0 times theorem prover too weak. 19993 trivial. 0 not checked. [2024-11-22 02:09:34,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 374 proven. 2682 refuted. 0 times theorem prover too weak. 19949 trivial. 0 not checked. [2024-11-22 02:09:39,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237447879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:39,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 35 [2024-11-22 02:09:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968344527] [2024-11-22 02:09:39,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:39,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:09:39,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:09:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:09:39,041 INFO L87 Difference]: Start difference. First operand 174 states and 303 transitions. Second operand has 35 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 35 states have internal predecessors, (113), 29 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) [2024-11-22 02:09:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:40,503 INFO L93 Difference]: Finished difference Result 447 states and 966 transitions. [2024-11-22 02:09:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 02:09:40,504 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 35 states have internal predecessors, (113), 29 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) Word has length 882 [2024-11-22 02:09:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:40,508 INFO L225 Difference]: With dead ends: 447 [2024-11-22 02:09:40,508 INFO L226 Difference]: Without dead ends: 246 [2024-11-22 02:09:40,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1818 GetRequests, 1737 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=799, Invalid=4603, Unknown=0, NotChecked=0, Total=5402 [2024-11-22 02:09:40,513 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 176 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:40,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 620 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 02:09:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-22 02:09:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 210. [2024-11-22 02:09:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.1310344827586207) internal successors, (164), 142 states have internal predecessors, (164), 40 states have call successors, (40), 26 states have call predecessors, (40), 24 states have return successors, (164), 41 states have call predecessors, (164), 40 states have call successors, (164) [2024-11-22 02:09:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 368 transitions. [2024-11-22 02:09:40,539 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 368 transitions. Word has length 882 [2024-11-22 02:09:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:40,540 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 368 transitions. [2024-11-22 02:09:40,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 35 states have internal predecessors, (113), 29 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) [2024-11-22 02:09:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 368 transitions. [2024-11-22 02:09:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2024-11-22 02:09:40,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:40,551 INFO L215 NwaCegarLoop]: trace histogram [91, 91, 88, 88, 74, 70, 45, 45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 30, 25, 18, 17, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:40,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:40,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:40,753 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:40,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash -75637175, now seen corresponding path program 9 times [2024-11-22 02:09:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788267441] [2024-11-22 02:09:40,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:40,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:09:40,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 2999 proven. 72 refuted. 0 times theorem prover too weak. 41481 trivial. 0 not checked. [2024-11-22 02:09:40,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:40,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788267441] [2024-11-22 02:09:40,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788267441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:40,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905547716] [2024-11-22 02:09:40,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:40,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:40,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:40,984 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:40,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:09:41,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:09:41,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:41,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:41,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 3312 proven. 85 refuted. 0 times theorem prover too weak. 41155 trivial. 0 not checked. [2024-11-22 02:09:41,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 3312 proven. 90 refuted. 0 times theorem prover too weak. 41150 trivial. 0 not checked. [2024-11-22 02:09:44,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905547716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:44,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:44,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 26 [2024-11-22 02:09:44,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958946701] [2024-11-22 02:09:44,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:44,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:09:44,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:44,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:09:44,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:09:44,723 INFO L87 Difference]: Start difference. First operand 210 states and 368 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 12 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-22 02:09:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:45,184 INFO L93 Difference]: Finished difference Result 493 states and 1059 transitions. [2024-11-22 02:09:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 02:09:45,185 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 12 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) Word has length 1222 [2024-11-22 02:09:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:45,189 INFO L225 Difference]: With dead ends: 493 [2024-11-22 02:09:45,189 INFO L226 Difference]: Without dead ends: 289 [2024-11-22 02:09:45,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2468 GetRequests, 2425 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:09:45,192 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 40 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:45,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 493 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-22 02:09:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 244. [2024-11-22 02:09:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 167 states have (on average 1.0658682634730539) internal successors, (178), 164 states have internal predecessors, (178), 47 states have call successors, (47), 29 states have call predecessors, (47), 29 states have return successors, (200), 50 states have call predecessors, (200), 47 states have call successors, (200) [2024-11-22 02:09:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 425 transitions. [2024-11-22 02:09:45,213 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 425 transitions. Word has length 1222 [2024-11-22 02:09:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:45,214 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 425 transitions. [2024-11-22 02:09:45,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 12 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-22 02:09:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 425 transitions. [2024-11-22 02:09:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1376 [2024-11-22 02:09:45,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:45,246 INFO L215 NwaCegarLoop]: trace histogram [122, 122, 92, 79, 79, 73, 61, 61, 61, 61, 61, 61, 61, 53, 39, 39, 39, 39, 39, 39, 39, 30, 12, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:45,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 02:09:45,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 02:09:45,448 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:45,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash -768034580, now seen corresponding path program 10 times [2024-11-22 02:09:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745140548] [2024-11-22 02:09:45,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:45,601 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:45,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 58946 backedges. 1037 proven. 3883 refuted. 0 times theorem prover too weak. 54026 trivial. 0 not checked. [2024-11-22 02:09:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745140548] [2024-11-22 02:09:46,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745140548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085932718] [2024-11-22 02:09:46,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:46,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:46,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:46,670 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:46,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:09:47,326 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:47,327 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:47,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:47,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 58946 backedges. 12933 proven. 264 refuted. 0 times theorem prover too weak. 45749 trivial. 0 not checked. [2024-11-22 02:09:47,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 58946 backedges. 968 proven. 5178 refuted. 0 times theorem prover too weak. 52800 trivial. 0 not checked. [2024-11-22 02:09:53,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085932718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:53,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:53,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 19] total 27 [2024-11-22 02:09:53,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972885882] [2024-11-22 02:09:53,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:53,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:09:53,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:53,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:09:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:09:53,782 INFO L87 Difference]: Start difference. First operand 244 states and 425 transitions. Second operand has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 21 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (38), 11 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-22 02:09:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:54,434 INFO L93 Difference]: Finished difference Result 452 states and 871 transitions. [2024-11-22 02:09:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 02:09:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 21 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (38), 11 states have call predecessors, (38), 21 states have call successors, (38) Word has length 1375 [2024-11-22 02:09:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:54,439 INFO L225 Difference]: With dead ends: 452 [2024-11-22 02:09:54,439 INFO L226 Difference]: Without dead ends: 219 [2024-11-22 02:09:54,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2784 GetRequests, 2729 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=1876, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 02:09:54,442 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 105 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:54,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 369 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-22 02:09:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 203. [2024-11-22 02:09:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 144 states have (on average 1.0763888888888888) internal successors, (155), 139 states have internal predecessors, (155), 39 states have call successors, (39), 31 states have call predecessors, (39), 19 states have return successors, (98), 32 states have call predecessors, (98), 39 states have call successors, (98) [2024-11-22 02:09:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2024-11-22 02:09:54,459 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 1375 [2024-11-22 02:09:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:54,459 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2024-11-22 02:09:54,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 21 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (38), 11 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-22 02:09:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2024-11-22 02:09:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1374 [2024-11-22 02:09:54,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:54,470 INFO L215 NwaCegarLoop]: trace histogram [105, 105, 96, 96, 83, 80, 52, 52, 52, 52, 52, 52, 52, 48, 48, 48, 48, 48, 48, 48, 35, 28, 22, 16, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:54,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 02:09:54,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:09:54,673 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:54,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1842608834, now seen corresponding path program 11 times [2024-11-22 02:09:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404518206] [2024-11-22 02:09:54,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:54,755 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-22 02:09:54,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 56459 backedges. 2463 proven. 3373 refuted. 0 times theorem prover too weak. 50623 trivial. 0 not checked. [2024-11-22 02:09:55,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:55,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404518206] [2024-11-22 02:09:55,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404518206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:55,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795854378] [2024-11-22 02:09:55,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:55,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:55,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:55,258 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:55,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:09:55,675 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-22 02:09:55,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:55,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:55,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 56459 backedges. 29858 proven. 343 refuted. 0 times theorem prover too weak. 26258 trivial. 0 not checked. [2024-11-22 02:09:55,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 56459 backedges. 2585 proven. 3603 refuted. 0 times theorem prover too weak. 50271 trivial. 0 not checked. [2024-11-22 02:10:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795854378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:02,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:02,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 21] total 28 [2024-11-22 02:10:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910469373] [2024-11-22 02:10:02,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:02,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:10:02,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:02,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:10:02,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:02,262 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand has 28 states, 27 states have (on average 3.925925925925926) internal successors, (106), 28 states have internal predecessors, (106), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (39), 12 states have call predecessors, (39), 21 states have call successors, (39) [2024-11-22 02:10:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:02,863 INFO L93 Difference]: Finished difference Result 426 states and 640 transitions. [2024-11-22 02:10:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 02:10:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.925925925925926) internal successors, (106), 28 states have internal predecessors, (106), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (39), 12 states have call predecessors, (39), 21 states have call successors, (39) Word has length 1373 [2024-11-22 02:10:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:02,866 INFO L225 Difference]: With dead ends: 426 [2024-11-22 02:10:02,866 INFO L226 Difference]: Without dead ends: 233 [2024-11-22 02:10:02,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2787 GetRequests, 2729 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=2045, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 02:10:02,868 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:02,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 346 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-22 02:10:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 204. [2024-11-22 02:10:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 144 states have (on average 1.0763888888888888) internal successors, (155), 140 states have internal predecessors, (155), 40 states have call successors, (40), 31 states have call predecessors, (40), 19 states have return successors, (95), 32 states have call predecessors, (95), 40 states have call successors, (95) [2024-11-22 02:10:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 290 transitions. [2024-11-22 02:10:02,882 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 290 transitions. Word has length 1373 [2024-11-22 02:10:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:02,882 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 290 transitions. [2024-11-22 02:10:02,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.925925925925926) internal successors, (106), 28 states have internal predecessors, (106), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (39), 12 states have call predecessors, (39), 21 states have call successors, (39) [2024-11-22 02:10:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 290 transitions. [2024-11-22 02:10:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-11-22 02:10:02,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:02,887 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 52, 52, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 20, 20, 13, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:02,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 02:10:03,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:03,091 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:03,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash -700034516, now seen corresponding path program 12 times [2024-11-22 02:10:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183804239] [2024-11-22 02:10:03,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:03,208 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:03,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 655 proven. 1695 refuted. 0 times theorem prover too weak. 20654 trivial. 0 not checked. [2024-11-22 02:10:03,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:03,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183804239] [2024-11-22 02:10:03,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183804239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:03,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681959695] [2024-11-22 02:10:03,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:03,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:03,545 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:03,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 02:10:03,938 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:03,939 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:03,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:03,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 655 proven. 1695 refuted. 0 times theorem prover too weak. 20654 trivial. 0 not checked. [2024-11-22 02:10:04,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 655 proven. 1721 refuted. 0 times theorem prover too weak. 20628 trivial. 0 not checked. [2024-11-22 02:10:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681959695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:07,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:07,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 20 [2024-11-22 02:10:07,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510913781] [2024-11-22 02:10:07,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:07,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 02:10:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 02:10:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:10:07,799 INFO L87 Difference]: Start difference. First operand 204 states and 290 transitions. Second operand has 20 states, 18 states have (on average 3.888888888888889) internal successors, (70), 20 states have internal predecessors, (70), 15 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-22 02:10:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:08,025 INFO L93 Difference]: Finished difference Result 231 states and 356 transitions. [2024-11-22 02:10:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:10:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.888888888888889) internal successors, (70), 20 states have internal predecessors, (70), 15 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) Word has length 882 [2024-11-22 02:10:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:08,029 INFO L225 Difference]: With dead ends: 231 [2024-11-22 02:10:08,030 INFO L226 Difference]: Without dead ends: 227 [2024-11-22 02:10:08,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1785 GetRequests, 1754 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:10:08,031 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:08,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 158 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-22 02:10:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 219. [2024-11-22 02:10:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 153 states have (on average 1.0718954248366013) internal successors, (164), 149 states have internal predecessors, (164), 43 states have call successors, (43), 31 states have call predecessors, (43), 22 states have return successors, (122), 38 states have call predecessors, (122), 43 states have call successors, (122) [2024-11-22 02:10:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 329 transitions. [2024-11-22 02:10:08,054 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 329 transitions. Word has length 882 [2024-11-22 02:10:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:08,055 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 329 transitions. [2024-11-22 02:10:08,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.888888888888889) internal successors, (70), 20 states have internal predecessors, (70), 15 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-22 02:10:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 329 transitions. [2024-11-22 02:10:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2024-11-22 02:10:08,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:08,063 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 82, 82, 68, 67, 42, 42, 42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 26, 26, 18, 14, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:08,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 02:10:08,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:08,268 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:08,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 508303849, now seen corresponding path program 13 times [2024-11-22 02:10:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:08,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37877282] [2024-11-22 02:10:08,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 38777 backedges. 1004 proven. 2523 refuted. 0 times theorem prover too weak. 35250 trivial. 0 not checked. [2024-11-22 02:10:09,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:09,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37877282] [2024-11-22 02:10:09,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37877282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:09,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875359019] [2024-11-22 02:10:09,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:09,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:09,901 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:09,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 02:10:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:10,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:10:10,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 38777 backedges. 507 proven. 3889 refuted. 0 times theorem prover too weak. 34381 trivial. 0 not checked. [2024-11-22 02:10:10,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 38777 backedges. 507 proven. 3945 refuted. 0 times theorem prover too weak. 34325 trivial. 0 not checked. [2024-11-22 02:10:17,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875359019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:17,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:17,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 23] total 29 [2024-11-22 02:10:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275300872] [2024-11-22 02:10:17,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:17,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:10:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:10:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:10:17,235 INFO L87 Difference]: Start difference. First operand 219 states and 329 transitions. Second operand has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 25 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-22 02:10:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:17,712 INFO L93 Difference]: Finished difference Result 272 states and 512 transitions. [2024-11-22 02:10:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:10:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 25 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) Word has length 1141 [2024-11-22 02:10:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:17,718 INFO L225 Difference]: With dead ends: 272 [2024-11-22 02:10:17,718 INFO L226 Difference]: Without dead ends: 268 [2024-11-22 02:10:17,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2311 GetRequests, 2262 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 02:10:17,720 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 114 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:17,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 255 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-22 02:10:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 247. [2024-11-22 02:10:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 170 states have (on average 1.0647058823529412) internal successors, (181), 166 states have internal predecessors, (181), 48 states have call successors, (48), 31 states have call predecessors, (48), 28 states have return successors, (190), 49 states have call predecessors, (190), 48 states have call successors, (190) [2024-11-22 02:10:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 419 transitions. [2024-11-22 02:10:17,748 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 419 transitions. Word has length 1141 [2024-11-22 02:10:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:17,748 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 419 transitions. [2024-11-22 02:10:17,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 25 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-22 02:10:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 419 transitions. [2024-11-22 02:10:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1959 [2024-11-22 02:10:17,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:17,847 INFO L215 NwaCegarLoop]: trace histogram [144, 144, 143, 143, 118, 114, 72, 72, 72, 72, 72, 72, 72, 71, 71, 71, 71, 71, 71, 71, 46, 43, 30, 25, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:17,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:18,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:18,053 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:18,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2011398441, now seen corresponding path program 14 times [2024-11-22 02:10:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:18,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880095119] [2024-11-22 02:10:18,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:18,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:18,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:18,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 115304 backedges. 1413 proven. 5570 refuted. 0 times theorem prover too weak. 108321 trivial. 0 not checked. [2024-11-22 02:10:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880095119] [2024-11-22 02:10:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880095119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060441775] [2024-11-22 02:10:21,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:21,589 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:21,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 02:10:22,518 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:22,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:22,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 4366 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:10:22,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 115304 backedges. 911 proven. 7627 refuted. 0 times theorem prover too weak. 106766 trivial. 0 not checked. [2024-11-22 02:10:22,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 115304 backedges. 911 proven. 7697 refuted. 0 times theorem prover too weak. 106696 trivial. 0 not checked. [2024-11-22 02:10:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060441775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:33,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 25] total 32 [2024-11-22 02:10:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030277339] [2024-11-22 02:10:33,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:33,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 02:10:33,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 02:10:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:10:33,343 INFO L87 Difference]: Start difference. First operand 247 states and 419 transitions. Second operand has 32 states, 30 states have (on average 3.5) internal successors, (105), 32 states have internal predecessors, (105), 28 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (45), 17 states have call predecessors, (45), 28 states have call successors, (45) [2024-11-22 02:10:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:33,827 INFO L93 Difference]: Finished difference Result 300 states and 645 transitions. [2024-11-22 02:10:33,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 02:10:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.5) internal successors, (105), 32 states have internal predecessors, (105), 28 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (45), 17 states have call predecessors, (45), 28 states have call successors, (45) Word has length 1958 [2024-11-22 02:10:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:33,836 INFO L225 Difference]: With dead ends: 300 [2024-11-22 02:10:33,836 INFO L226 Difference]: Without dead ends: 296 [2024-11-22 02:10:33,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3949 GetRequests, 3894 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 02:10:33,839 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 153 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:33,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 261 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-22 02:10:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 237. [2024-11-22 02:10:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 164 states have (on average 1.0670731707317074) internal successors, (175), 160 states have internal predecessors, (175), 46 states have call successors, (46), 31 states have call predecessors, (46), 26 states have return successors, (160), 45 states have call predecessors, (160), 46 states have call successors, (160) [2024-11-22 02:10:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 381 transitions. [2024-11-22 02:10:33,871 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 381 transitions. Word has length 1958 [2024-11-22 02:10:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:33,872 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 381 transitions. [2024-11-22 02:10:33,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.5) internal successors, (105), 32 states have internal predecessors, (105), 28 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (45), 17 states have call predecessors, (45), 28 states have call successors, (45) [2024-11-22 02:10:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 381 transitions. [2024-11-22 02:10:34,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4982 [2024-11-22 02:10:34,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:34,044 INFO L215 NwaCegarLoop]: trace histogram [369, 369, 362, 362, 298, 293, 184, 184, 184, 184, 184, 184, 184, 181, 181, 181, 181, 181, 181, 181, 114, 112, 76, 64, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:34,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-22 02:10:34,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 02:10:34,248 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:34,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1320477367, now seen corresponding path program 15 times [2024-11-22 02:10:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:34,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069603833] [2024-11-22 02:10:34,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:34,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:34,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 43 check-sat command(s) [2024-11-22 02:10:34,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 752483 backedges. 16817 proven. 1191 refuted. 0 times theorem prover too weak. 734475 trivial. 0 not checked. [2024-11-22 02:10:35,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069603833] [2024-11-22 02:10:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069603833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621044148] [2024-11-22 02:10:35,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:35,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:35,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:35,355 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:35,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process