./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.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_10-1.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 b6366e3b98da5ee88513ec6586b547e61d25aed49a53277f23448bdf367b4562 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:08:52,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:08:52,945 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:08:52,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:08:52,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:08:52,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:08:52,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:08:52,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:08:52,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:08:52,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:08:52,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:08:52,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:08:52,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:08:52,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:08:52,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:08:52,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:08:52,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:08:52,986 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:08:52,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:08:52,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:08:52,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:08:52,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:08:52,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:08:52,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:08:52,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:08:52,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:08:52,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:08:52,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:08:52,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:08:52,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:08:52,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:08:52,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:08:52,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:08:52,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:08:52,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:08:52,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:08:52,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:08:52,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:08:52,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:08:52,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:08:52,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:08:52,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:08:52,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6366e3b98da5ee88513ec6586b547e61d25aed49a53277f23448bdf367b4562 [2024-11-22 02:08:53,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:08:53,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:08:53,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:08:53,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:08:53,275 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:08:53,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c [2024-11-22 02:08:54,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:08:54,874 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:08:54,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c [2024-11-22 02:08:54,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0bcba8ec/fae7b0178edb44e0935ad412f54c1132/FLAG3c4ebd274 [2024-11-22 02:08:54,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0bcba8ec/fae7b0178edb44e0935ad412f54c1132 [2024-11-22 02:08:54,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:08:54,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:08:54,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:08:54,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:08:54,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:08:54,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:54" (1/1) ... [2024-11-22 02:08:54,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129dd2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:54, skipping insertion in model container [2024-11-22 02:08:54,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:54" (1/1) ... [2024-11-22 02:08:54,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:08:55,106 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_10-1.c[949,962] [2024-11-22 02:08:55,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:08:55,124 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:08:55,140 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_10-1.c[949,962] [2024-11-22 02:08:55,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:08:55,157 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:08:55,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55 WrapperNode [2024-11-22 02:08:55,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:08:55,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:08:55,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:08:55,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:08:55,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,186 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:08:55,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:08:55,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:08:55,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:08:55,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:08:55,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,206 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 02:08:55,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:08:55,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:08:55,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:08:55,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:08:55,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (1/1) ... [2024-11-22 02:08:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:08:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:55,252 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 02:08:55,258 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 02:08:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:08:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:08:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:08:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:08:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:08:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:08:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:08:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:08:55,367 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:08:55,370 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:08:55,522 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:08:55,525 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:08:55,537 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:08:55,539 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:08:55,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:55 BoogieIcfgContainer [2024-11-22 02:08:55,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:08:55,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:08:55,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:08:55,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:08:55,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:08:54" (1/3) ... [2024-11-22 02:08:55,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764c5f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:55, skipping insertion in model container [2024-11-22 02:08:55,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:55" (2/3) ... [2024-11-22 02:08:55,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764c5f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:55, skipping insertion in model container [2024-11-22 02:08:55,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:55" (3/3) ... [2024-11-22 02:08:55,549 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2024-11-22 02:08:55,566 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:08:55,566 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:08:55,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:08:55,639 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;@65981b69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:08:55,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:08:55,644 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 02:08:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:08:55,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:55,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:55,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:55,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:08:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156363487] [2024-11-22 02:08:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:55,928 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 02:08:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156363487] [2024-11-22 02:08:55,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156363487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:08:55,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:08:55,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:08:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862428773] [2024-11-22 02:08:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:08:55,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:08:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:08:55,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:08:55,974 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 02:08:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:56,084 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-22 02:08:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:08:56,086 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 02:08:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:56,092 INFO L225 Difference]: With dead ends: 41 [2024-11-22 02:08:56,093 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:08:56,095 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 02:08:56,097 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:56,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:08:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:08:56,130 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 02:08:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:08:56,133 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:08:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:56,134 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:08:56,134 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 02:08:56,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:08:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:08:56,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:56,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:56,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:08:56,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:56,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-22 02:08:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956362661] [2024-11-22 02:08:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:56,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:56,206 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 02:08:56,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:56,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956362661] [2024-11-22 02:08:56,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956362661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:08:56,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:08:56,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:08:56,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631462633] [2024-11-22 02:08:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:08:56,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:08:56,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:08:56,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:08:56,211 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 02:08:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:56,262 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-22 02:08:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:08:56,263 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 02:08:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:56,264 INFO L225 Difference]: With dead ends: 33 [2024-11-22 02:08:56,264 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:08:56,265 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 02:08:56,266 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:56,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:08:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:08:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:08:56,274 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 02:08:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:08:56,275 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-22 02:08:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:56,275 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:08:56,276 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 02:08:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:08:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:08:56,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:56,279 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 02:08:56,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:08:56,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:56,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:08:56,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:56,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555439483] [2024-11-22 02:08:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:56,435 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 02:08:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555439483] [2024-11-22 02:08:56,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555439483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281779805] [2024-11-22 02:08:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:56,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:56,440 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 02:08:56,441 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 02:08:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:56,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:08:56,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:56,592 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 02:08:56,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:56,818 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 02:08:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281779805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:56,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:56,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:08:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593724618] [2024-11-22 02:08:56,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:56,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:08:56,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:08:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:08:56,825 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 02:08:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:56,964 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-22 02:08:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:08:56,965 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 02:08:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:56,967 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:08:56,968 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:08:56,969 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 02:08:56,970 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 02:08:56,973 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 02:08:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:08:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-22 02:08:56,982 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 02:08:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-22 02:08:56,984 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-22 02:08:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:56,984 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-22 02:08:56,984 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 02:08:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-22 02:08:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:08:56,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:56,986 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 02:08:56,995 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 02:08:57,190 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 02:08:57,191 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:57,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:08:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432207154] [2024-11-22 02:08:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:57,354 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 02:08:57,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432207154] [2024-11-22 02:08:57,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432207154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19357898] [2024-11-22 02:08:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:57,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:57,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:57,361 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 02:08:57,363 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 02:08:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:57,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:08:57,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:57,426 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 02:08:57,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:57,631 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 02:08:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19357898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:57,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:57,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:08:57,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710661888] [2024-11-22 02:08:57,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:57,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:08:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:08:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:08:57,638 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 02:08:57,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:57,767 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-22 02:08:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:08:57,768 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 02:08:57,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:57,771 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:08:57,771 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:08:57,771 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 02:08:57,774 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:57,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:08:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 02:08:57,784 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 02:08:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-22 02:08:57,789 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-22 02:08:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:57,790 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-22 02:08:57,790 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 02:08:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-22 02:08:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:08:57,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:57,791 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 02:08:57,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:08:57,992 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 02:08:57,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:57,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:08:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104870030] [2024-11-22 02:08:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:58,132 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 02:08:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104870030] [2024-11-22 02:08:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104870030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:58,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599449994] [2024-11-22 02:08:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:58,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:58,135 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 02:08:58,137 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 02:08:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:58,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:08:58,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:58,248 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 02:08:58,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:58,588 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 02:08:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599449994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:58,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:58,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-22 02:08:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784952525] [2024-11-22 02:08:58,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:58,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:08:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:08:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:08:58,591 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 02:08:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:58,806 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-22 02:08:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:08:58,807 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 02:08:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:58,809 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:08:58,809 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:08:58,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:08:58,810 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:58,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:08:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:08:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 02:08:58,823 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 02:08:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-22 02:08:58,827 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-22 02:08:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:58,828 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-22 02:08:58,828 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 02:08:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-22 02:08:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:08:58,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:58,829 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 02:08:58,840 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 02:08:59,030 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 02:08:59,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:59,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-22 02:08:59,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:59,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354732548] [2024-11-22 02:08:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:59,153 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 02:08:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354732548] [2024-11-22 02:08:59,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354732548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:59,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684824543] [2024-11-22 02:08:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:59,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:59,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:59,157 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 02:08:59,158 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 02:08:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:59,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:08:59,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:59,280 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 02:08:59,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:59,606 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 02:08:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684824543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:59,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:59,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-22 02:08:59,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565428245] [2024-11-22 02:08:59,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:59,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:08:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:08:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:08:59,609 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 02:09:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:00,013 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-22 02:09:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:09:00,014 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 02:09:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:00,015 INFO L225 Difference]: With dead ends: 101 [2024-11-22 02:09:00,016 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:09:00,017 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 02:09:00,018 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 02:09:00,018 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 02:09:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:09:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-22 02:09:00,029 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 02:09:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-22 02:09:00,031 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-22 02:09:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:00,031 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-22 02:09:00,032 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 02:09:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-22 02:09:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 02:09:00,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:00,034 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 02:09:00,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:09:00,238 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 02:09:00,239 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:00,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-22 02:09:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:00,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515838816] [2024-11-22 02:09:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:00,366 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 02:09:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:00,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515838816] [2024-11-22 02:09:00,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515838816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:00,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531800406] [2024-11-22 02:09:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:00,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:00,370 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 02:09:00,371 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 02:09:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:00,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:00,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:00,504 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 02:09:00,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:00,999 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 02:09:01,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531800406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:01,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:01,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-22 02:09:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012465547] [2024-11-22 02:09:01,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:01,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:01,003 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 02:09:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:01,202 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-22 02:09:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:01,203 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 02:09:01,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:01,207 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:09:01,207 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 02:09:01,208 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 02:09:01,209 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:01,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 164 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 02:09:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-22 02:09:01,230 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 02:09:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-22 02:09:01,232 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-22 02:09:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:01,233 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-22 02:09:01,233 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 02:09:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-22 02:09:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:09:01,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:01,237 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 02:09:01,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:01,440 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 02:09:01,441 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:01,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-22 02:09:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780895841] [2024-11-22 02:09:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:01,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:01,623 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 02:09:01,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780895841] [2024-11-22 02:09:01,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780895841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858592712] [2024-11-22 02:09:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:01,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:01,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:01,627 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 02:09:01,628 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 02:09:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:01,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:01,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:01,804 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 02:09:01,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:02,573 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 02:09:02,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858592712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:02,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:02,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-22 02:09:02,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098352359] [2024-11-22 02:09:02,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:02,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:02,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:02,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:02,578 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 02:09:03,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:03,153 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-22 02:09:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:09:03,153 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 02:09:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:03,156 INFO L225 Difference]: With dead ends: 177 [2024-11-22 02:09:03,156 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 02:09:03,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:09:03,164 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:03,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 02:09:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-22 02:09:03,193 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 02:09:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-22 02:09:03,198 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-22 02:09:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:03,198 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-22 02:09:03,199 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 02:09:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-22 02:09:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:09:03,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:03,208 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 02:09:03,218 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 02:09:03,408 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 02:09:03,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:03,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-22 02:09:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276734599] [2024-11-22 02:09:03,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:03,451 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:03,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:03,685 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 02:09:03,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:03,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276734599] [2024-11-22 02:09:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276734599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164331221] [2024-11-22 02:09:03,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:03,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:03,688 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 02:09:03,691 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 02:09:03,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:03,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:03,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:03,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:03,902 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 02:09:03,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:05,101 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 02:09:05,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164331221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:05,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:05,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-22 02:09:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82413313] [2024-11-22 02:09:05,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:05,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:05,105 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 02:09:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:05,360 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-22 02:09:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:09:05,361 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 02:09:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:05,363 INFO L225 Difference]: With dead ends: 132 [2024-11-22 02:09:05,363 INFO L226 Difference]: Without dead ends: 128 [2024-11-22 02:09:05,365 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 02:09:05,366 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:05,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 196 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-22 02:09:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-22 02:09:05,391 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 02:09:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-22 02:09:05,393 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-22 02:09:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:05,394 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-22 02:09:05,394 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 02:09:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-22 02:09:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-22 02:09:05,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:05,398 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 02:09:05,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:09:05,602 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 02:09:05,603 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:05,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-22 02:09:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:05,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47658918] [2024-11-22 02:09:05,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:05,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:05,651 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:05,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:06,056 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 02:09:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47658918] [2024-11-22 02:09:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47658918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:06,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054891005] [2024-11-22 02:09:06,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:06,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:06,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:06,059 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 02:09:06,061 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 02:09:06,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:06,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:06,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:09:06,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:06,366 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 02:09:06,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:08,229 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 02:09:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054891005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:08,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 29 [2024-11-22 02:09:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697701633] [2024-11-22 02:09:08,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:08,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:09:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:09:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:09:08,233 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 02:09:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:09,022 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-22 02:09:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:09:09,023 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 02:09:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:09,028 INFO L225 Difference]: With dead ends: 323 [2024-11-22 02:09:09,028 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:09:09,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=2413, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:09:09,031 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 158 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:09,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 449 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:09:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:09:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-22 02:09:09,066 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 02:09:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-22 02:09:09,072 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-22 02:09:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:09,073 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-22 02:09:09,074 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 02:09:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-22 02:09:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-22 02:09:09,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:09,081 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 02:09:09,090 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 02:09:09,284 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 02:09:09,285 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:09,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1695767594, now seen corresponding path program 3 times [2024-11-22 02:09:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044246322] [2024-11-22 02:09:09,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:09,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:09:09,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:09,406 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 02:09:09,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:09,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044246322] [2024-11-22 02:09:09,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044246322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:09,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838730261] [2024-11-22 02:09:09,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:09,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:09,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:09,409 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 02:09:09,411 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 02:09:09,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:09:09,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:09,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:09,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:09,608 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 02:09:09,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:10,654 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 02:09:10,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838730261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:10,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:10,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 02:09:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061870868] [2024-11-22 02:09:10,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:10,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:09:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:09:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:09:10,658 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 02:09:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:10,789 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2024-11-22 02:09:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:09:10,790 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 02:09:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:10,792 INFO L225 Difference]: With dead ends: 360 [2024-11-22 02:09:10,793 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 02:09:10,794 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 02:09:10,795 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:10,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 02:09:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-22 02:09:10,817 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 02:09:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2024-11-22 02:09:10,819 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 389 [2024-11-22 02:09:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:10,820 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2024-11-22 02:09:10,820 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 02:09:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2024-11-22 02:09:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-22 02:09:10,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:10,828 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 02:09:10,837 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 02:09:11,029 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 02:09:11,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:11,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2024-11-22 02:09:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176818988] [2024-11-22 02:09:11,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:11,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:11,095 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:11,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2024-11-22 02:09:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176818988] [2024-11-22 02:09:11,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176818988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68601868] [2024-11-22 02:09:11,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:11,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:11,463 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 02:09:11,464 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 02:09:11,643 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:11,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:11,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:11,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 137 proven. 1182 refuted. 0 times theorem prover too weak. 4894 trivial. 0 not checked. [2024-11-22 02:09:11,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 137 proven. 1215 refuted. 0 times theorem prover too weak. 4861 trivial. 0 not checked. [2024-11-22 02:09:14,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68601868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:14,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:14,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 19] total 27 [2024-11-22 02:09:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872205115] [2024-11-22 02:09:14,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:14,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:09:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:09:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:09:14,798 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) [2024-11-22 02:09:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:15,164 INFO L93 Difference]: Finished difference Result 215 states and 375 transitions. [2024-11-22 02:09:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:09:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) Word has length 461 [2024-11-22 02:09:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:15,169 INFO L225 Difference]: With dead ends: 215 [2024-11-22 02:09:15,169 INFO L226 Difference]: Without dead ends: 211 [2024-11-22 02:09:15,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 902 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 02:09:15,171 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 67 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:15,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 238 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-22 02:09:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2024-11-22 02:09:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 132 states have internal predecessors, (154), 39 states have call successors, (39), 18 states have call predecessors, (39), 27 states have return successors, (150), 50 states have call predecessors, (150), 39 states have call successors, (150) [2024-11-22 02:09:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 343 transitions. [2024-11-22 02:09:15,202 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 343 transitions. Word has length 461 [2024-11-22 02:09:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:15,204 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 343 transitions. [2024-11-22 02:09:15,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) [2024-11-22 02:09:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 343 transitions. [2024-11-22 02:09:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-22 02:09:15,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:15,220 INFO L215 NwaCegarLoop]: trace histogram [78, 78, 77, 77, 63, 62, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 24, 24, 16, 14, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:15,230 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 02:09:15,422 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 02:09:15,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:15,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1215559467, now seen corresponding path program 5 times [2024-11-22 02:09:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:15,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083336791] [2024-11-22 02:09:15,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:15,567 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-22 02:09:15,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 1603 proven. 2350 refuted. 0 times theorem prover too weak. 29383 trivial. 0 not checked. [2024-11-22 02:09:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083336791] [2024-11-22 02:09:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083336791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669653778] [2024-11-22 02:09:16,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:16,215 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 02:09:16,217 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 02:09:16,524 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-22 02:09:16,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:16,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:16,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 18194 proven. 414 refuted. 0 times theorem prover too weak. 14728 trivial. 0 not checked. [2024-11-22 02:09:16,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 1685 proven. 2550 refuted. 0 times theorem prover too weak. 29101 trivial. 0 not checked. [2024-11-22 02:09:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669653778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:21,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 21] total 28 [2024-11-22 02:09:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215109951] [2024-11-22 02:09:21,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:21,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:09:21,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:09:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:09:21,178 INFO L87 Difference]: Start difference. First operand 201 states and 343 transitions. Second operand has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-22 02:09:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:21,901 INFO L93 Difference]: Finished difference Result 464 states and 872 transitions. [2024-11-22 02:09:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 02:09:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) Word has length 1059 [2024-11-22 02:09:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:21,909 INFO L225 Difference]: With dead ends: 464 [2024-11-22 02:09:21,909 INFO L226 Difference]: Without dead ends: 255 [2024-11-22 02:09:21,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2157 GetRequests, 2101 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1874, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 02:09:21,913 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 57 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:21,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 469 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:09:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-22 02:09:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 217. [2024-11-22 02:09:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 147 states have (on average 1.1088435374149659) internal successors, (163), 144 states have internal predecessors, (163), 42 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (140), 49 states have call predecessors, (140), 42 states have call successors, (140) [2024-11-22 02:09:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 345 transitions. [2024-11-22 02:09:21,935 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 345 transitions. Word has length 1059 [2024-11-22 02:09:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:21,936 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 345 transitions. [2024-11-22 02:09:21,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-22 02:09:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 345 transitions. [2024-11-22 02:09:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2024-11-22 02:09:21,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:21,943 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 50, 49, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 19, 19, 13, 11, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:21,953 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 02:09:22,143 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 02:09:22,144 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:22,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1472783967, now seen corresponding path program 6 times [2024-11-22 02:09:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:22,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778359613] [2024-11-22 02:09:22,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:22,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:22,198 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-22 02:09:22,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 1858 proven. 86 refuted. 0 times theorem prover too weak. 18941 trivial. 0 not checked. [2024-11-22 02:09:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778359613] [2024-11-22 02:09:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778359613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550582671] [2024-11-22 02:09:22,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:22,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:22,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:22,658 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 02:09:22,661 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 02:09:22,909 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-22 02:09:22,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:22,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:22,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 3620 proven. 34 refuted. 0 times theorem prover too weak. 17231 trivial. 0 not checked. [2024-11-22 02:09:23,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 2057 proven. 104 refuted. 0 times theorem prover too weak. 18724 trivial. 0 not checked. [2024-11-22 02:09:25,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550582671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:25,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:25,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 24 [2024-11-22 02:09:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819508735] [2024-11-22 02:09:25,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:25,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 02:09:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 02:09:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:09:25,385 INFO L87 Difference]: Start difference. First operand 217 states and 345 transitions. Second operand has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (28), 9 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-22 02:09:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:25,661 INFO L93 Difference]: Finished difference Result 434 states and 724 transitions. [2024-11-22 02:09:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:09:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (28), 9 states have call predecessors, (28), 13 states have call successors, (28) Word has length 841 [2024-11-22 02:09:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:25,666 INFO L225 Difference]: With dead ends: 434 [2024-11-22 02:09:25,666 INFO L226 Difference]: Without dead ends: 224 [2024-11-22 02:09:25,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1667 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-11-22 02:09:25,669 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:25,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 241 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-22 02:09:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2024-11-22 02:09:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 145 states have (on average 1.110344827586207) internal successors, (161), 142 states have internal predecessors, (161), 42 states have call successors, (42), 23 states have call predecessors, (42), 26 states have return successors, (132), 48 states have call predecessors, (132), 42 states have call successors, (132) [2024-11-22 02:09:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 335 transitions. [2024-11-22 02:09:25,699 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 335 transitions. Word has length 841 [2024-11-22 02:09:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:25,701 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 335 transitions. [2024-11-22 02:09:25,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (28), 9 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-22 02:09:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 335 transitions. [2024-11-22 02:09:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2024-11-22 02:09:25,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:25,712 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 71, 71, 59, 58, 37, 37, 37, 37, 37, 37, 37, 35, 35, 35, 35, 35, 35, 35, 23, 22, 16, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:25,721 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 02:09:25,916 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 02:09:25,917 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:25,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1080305258, now seen corresponding path program 7 times [2024-11-22 02:09:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:25,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552805324] [2024-11-22 02:09:25,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 29152 backedges. 453 proven. 2955 refuted. 0 times theorem prover too weak. 25744 trivial. 0 not checked. [2024-11-22 02:09:27,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552805324] [2024-11-22 02:09:27,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552805324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70261201] [2024-11-22 02:09:27,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:27,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:27,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:27,463 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 02:09:27,464 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 02:09:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:27,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:27,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 29152 backedges. 453 proven. 2955 refuted. 0 times theorem prover too weak. 25744 trivial. 0 not checked. [2024-11-22 02:09:27,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 29152 backedges. 453 proven. 2999 refuted. 0 times theorem prover too weak. 25700 trivial. 0 not checked. [2024-11-22 02:09:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70261201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:32,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:32,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 23 [2024-11-22 02:09:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880718309] [2024-11-22 02:09:32,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:32,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:32,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:32,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:32,532 INFO L87 Difference]: Start difference. First operand 214 states and 335 transitions. Second operand has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-22 02:09:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:32,792 INFO L93 Difference]: Finished difference Result 249 states and 416 transitions. [2024-11-22 02:09:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:09:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) Word has length 991 [2024-11-22 02:09:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:32,797 INFO L225 Difference]: With dead ends: 249 [2024-11-22 02:09:32,797 INFO L226 Difference]: Without dead ends: 245 [2024-11-22 02:09:32,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2009 GetRequests, 1970 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2024-11-22 02:09:32,799 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:32,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 226 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-22 02:09:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 222. [2024-11-22 02:09:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 150 states have (on average 1.1066666666666667) internal successors, (166), 147 states have internal predecessors, (166), 43 states have call successors, (43), 23 states have call predecessors, (43), 28 states have return successors, (138), 51 states have call predecessors, (138), 43 states have call successors, (138) [2024-11-22 02:09:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 347 transitions. [2024-11-22 02:09:32,821 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 347 transitions. Word has length 991 [2024-11-22 02:09:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:32,822 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 347 transitions. [2024-11-22 02:09:32,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-22 02:09:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 347 transitions. [2024-11-22 02:09:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2024-11-22 02:09:32,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:32,829 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 61, 61, 52, 51, 33, 33, 33, 33, 33, 33, 33, 30, 30, 30, 30, 30, 30, 30, 22, 18, 14, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:32,840 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 02:09:33,030 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 02:09:33,030 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:33,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:33,030 INFO L85 PathProgramCache]: Analyzing trace with hash 769037241, now seen corresponding path program 8 times [2024-11-22 02:09:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:33,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584498989] [2024-11-22 02:09:33,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:33,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:33,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:33,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 22353 backedges. 466 proven. 2181 refuted. 0 times theorem prover too weak. 19706 trivial. 0 not checked. [2024-11-22 02:09:34,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584498989] [2024-11-22 02:09:34,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584498989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475850155] [2024-11-22 02:09:34,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:34,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:34,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:34,144 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 02:09:34,146 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 02:09:34,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:34,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:34,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:34,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22353 backedges. 466 proven. 2181 refuted. 0 times theorem prover too weak. 19706 trivial. 0 not checked. [2024-11-22 02:09:34,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22353 backedges. 466 proven. 2214 refuted. 0 times theorem prover too weak. 19673 trivial. 0 not checked. [2024-11-22 02:09:38,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475850155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:38,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2024-11-22 02:09:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174226491] [2024-11-22 02:09:38,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:38,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:09:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:09:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:09:38,181 INFO L87 Difference]: Start difference. First operand 222 states and 347 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-22 02:09:38,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:38,367 INFO L93 Difference]: Finished difference Result 259 states and 454 transitions. [2024-11-22 02:09:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:09:38,368 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 869 [2024-11-22 02:09:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:38,371 INFO L225 Difference]: With dead ends: 259 [2024-11-22 02:09:38,371 INFO L226 Difference]: Without dead ends: 255 [2024-11-22 02:09:38,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1727 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:09:38,373 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:38,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 174 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-22 02:09:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2024-11-22 02:09:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 156 states have (on average 1.1025641025641026) internal successors, (172), 153 states have internal predecessors, (172), 45 states have call successors, (45), 23 states have call predecessors, (45), 30 states have return successors, (160), 55 states have call predecessors, (160), 45 states have call successors, (160) [2024-11-22 02:09:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 377 transitions. [2024-11-22 02:09:38,397 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 377 transitions. Word has length 869 [2024-11-22 02:09:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:38,397 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 377 transitions. [2024-11-22 02:09:38,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-22 02:09:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 377 transitions. [2024-11-22 02:09:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2024-11-22 02:09:38,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:38,405 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 65, 65, 56, 56, 36, 36, 36, 36, 36, 36, 36, 32, 32, 32, 32, 32, 32, 32, 24, 20, 16, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:38,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:09:38,605 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 02:09:38,606 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:38,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash 875200504, now seen corresponding path program 9 times [2024-11-22 02:09:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:38,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968359630] [2024-11-22 02:09:38,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:38,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:09:38,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 26128 backedges. 1933 proven. 94 refuted. 0 times theorem prover too weak. 24101 trivial. 0 not checked. [2024-11-22 02:09:38,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968359630] [2024-11-22 02:09:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968359630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985648886] [2024-11-22 02:09:38,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:38,760 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 02:09:38,762 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 02:09:39,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:09:39,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:39,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:39,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 26128 backedges. 4877 proven. 19 refuted. 0 times theorem prover too weak. 21232 trivial. 0 not checked. [2024-11-22 02:09:39,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 26128 backedges. 2164 proven. 121 refuted. 0 times theorem prover too weak. 23843 trivial. 0 not checked. [2024-11-22 02:09:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985648886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:41,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:41,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2024-11-22 02:09:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248609880] [2024-11-22 02:09:41,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:41,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:41,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:41,563 INFO L87 Difference]: Start difference. First operand 232 states and 377 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-22 02:09:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:41,717 INFO L93 Difference]: Finished difference Result 428 states and 768 transitions. [2024-11-22 02:09:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:09:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) Word has length 938 [2024-11-22 02:09:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:41,721 INFO L225 Difference]: With dead ends: 428 [2024-11-22 02:09:41,721 INFO L226 Difference]: Without dead ends: 182 [2024-11-22 02:09:41,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1890 GetRequests, 1864 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:41,724 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:41,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 157 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-22 02:09:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-22 02:09:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 123 states have internal predecessors, (138), 33 states have call successors, (33), 22 states have call predecessors, (33), 22 states have return successors, (107), 36 states have call predecessors, (107), 33 states have call successors, (107) [2024-11-22 02:09:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 278 transitions. [2024-11-22 02:09:41,742 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 278 transitions. Word has length 938 [2024-11-22 02:09:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:41,742 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 278 transitions. [2024-11-22 02:09:41,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-22 02:09:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 278 transitions. [2024-11-22 02:09:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2024-11-22 02:09:41,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:41,759 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 119, 119, 106, 102, 66, 66, 66, 66, 66, 66, 66, 59, 59, 59, 59, 59, 59, 59, 43, 40, 30, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:41,769 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 02:09:41,960 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 02:09:41,960 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash 871578463, now seen corresponding path program 10 times [2024-11-22 02:09:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115754846] [2024-11-22 02:09:41,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:42,265 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:42,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 88808 backedges. 1841 proven. 3590 refuted. 0 times theorem prover too weak. 83377 trivial. 0 not checked. [2024-11-22 02:09:44,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:44,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115754846] [2024-11-22 02:09:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115754846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:44,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880345550] [2024-11-22 02:09:44,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:44,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:44,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:44,166 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 02:09:44,168 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 02:09:44,742 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:44,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:44,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:44,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 88808 backedges. 971 proven. 5360 refuted. 0 times theorem prover too weak. 82477 trivial. 0 not checked. [2024-11-22 02:09:45,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 88808 backedges. 983 proven. 5388 refuted. 0 times theorem prover too weak. 82437 trivial. 0 not checked. [2024-11-22 02:09:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880345550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:51,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:51,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 21] total 34 [2024-11-22 02:09:51,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763684768] [2024-11-22 02:09:51,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:51,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 02:09:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 02:09:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 02:09:51,587 INFO L87 Difference]: Start difference. First operand 182 states and 278 transitions. Second operand has 34 states, 32 states have (on average 3.5625) internal successors, (114), 34 states have internal predecessors, (114), 28 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (48), 23 states have call predecessors, (48), 28 states have call successors, (48) [2024-11-22 02:09:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:52,834 INFO L93 Difference]: Finished difference Result 568 states and 1276 transitions. [2024-11-22 02:09:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 02:09:52,835 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 34 states have internal predecessors, (114), 28 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (48), 23 states have call predecessors, (48), 28 states have call successors, (48) Word has length 1718 [2024-11-22 02:09:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:52,839 INFO L225 Difference]: With dead ends: 568 [2024-11-22 02:09:52,839 INFO L226 Difference]: Without dead ends: 293 [2024-11-22 02:09:52,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3491 GetRequests, 3411 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=655, Invalid=4457, Unknown=0, NotChecked=0, Total=5112 [2024-11-22 02:09:52,847 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 165 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:52,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 870 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 02:09:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-22 02:09:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 248. [2024-11-22 02:09:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 172 states have (on average 1.0755813953488371) internal successors, (185), 170 states have internal predecessors, (185), 51 states have call successors, (51), 35 states have call predecessors, (51), 24 states have return successors, (131), 42 states have call predecessors, (131), 51 states have call successors, (131) [2024-11-22 02:09:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 367 transitions. [2024-11-22 02:09:52,873 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 367 transitions. Word has length 1718 [2024-11-22 02:09:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:52,873 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 367 transitions. [2024-11-22 02:09:52,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 34 states have internal predecessors, (114), 28 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (48), 23 states have call predecessors, (48), 28 states have call successors, (48) [2024-11-22 02:09:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 367 transitions. [2024-11-22 02:09:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2024-11-22 02:09:52,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:52,881 INFO L215 NwaCegarLoop]: trace histogram [71, 71, 70, 70, 57, 57, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 22, 22, 14, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:52,895 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 02:09:53,085 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 02:09:53,086 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:53,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash 835726202, now seen corresponding path program 11 times [2024-11-22 02:09:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038546143] [2024-11-22 02:09:53,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:53,241 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-11-22 02:09:53,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27552 backedges. 736 proven. 2588 refuted. 0 times theorem prover too weak. 24228 trivial. 0 not checked. [2024-11-22 02:09:53,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:53,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038546143] [2024-11-22 02:09:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038546143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:53,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63214658] [2024-11-22 02:09:53,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:53,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:53,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:53,979 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 02:09:53,981 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 02:09:54,420 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-11-22 02:09:54,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:54,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:09:54,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 27552 backedges. 7782 proven. 86 refuted. 0 times theorem prover too weak. 19684 trivial. 0 not checked. [2024-11-22 02:09:54,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 27552 backedges. 754 proven. 2824 refuted. 0 times theorem prover too weak. 23974 trivial. 0 not checked. [2024-11-22 02:09:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63214658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:57,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:57,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 26 [2024-11-22 02:09:57,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118413627] [2024-11-22 02:09:57,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:57,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:09:57,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:09:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:09:57,707 INFO L87 Difference]: Start difference. First operand 248 states and 367 transitions. Second operand has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 19 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (35), 12 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-22 02:09:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:58,132 INFO L93 Difference]: Finished difference Result 498 states and 756 transitions. [2024-11-22 02:09:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 02:09:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 19 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (35), 12 states have call predecessors, (35), 19 states have call successors, (35) Word has length 964 [2024-11-22 02:09:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:58,136 INFO L225 Difference]: With dead ends: 498 [2024-11-22 02:09:58,136 INFO L226 Difference]: Without dead ends: 273 [2024-11-22 02:09:58,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1956 GetRequests, 1912 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:09:58,139 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 43 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:58,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 319 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-22 02:09:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 241. [2024-11-22 02:09:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.0773809523809523) internal successors, (181), 166 states have internal predecessors, (181), 49 states have call successors, (49), 35 states have call predecessors, (49), 23 states have return successors, (115), 39 states have call predecessors, (115), 49 states have call successors, (115) [2024-11-22 02:09:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 345 transitions. [2024-11-22 02:09:58,161 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 345 transitions. Word has length 964 [2024-11-22 02:09:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:58,161 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 345 transitions. [2024-11-22 02:09:58,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 19 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (35), 12 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-22 02:09:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 345 transitions. [2024-11-22 02:09:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1973 [2024-11-22 02:09:58,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:58,183 INFO L215 NwaCegarLoop]: trace histogram [147, 147, 142, 142, 119, 115, 73, 73, 73, 73, 73, 73, 73, 71, 71, 71, 71, 71, 71, 71, 48, 42, 28, 27, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:58,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:58,386 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 02:09:58,387 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:58,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2020308382, now seen corresponding path program 12 times [2024-11-22 02:09:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:58,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899614965] [2024-11-22 02:09:58,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:58,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:58,500 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:09:58,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 116996 backedges. 1088 proven. 5151 refuted. 0 times theorem prover too weak. 110757 trivial. 0 not checked. [2024-11-22 02:09:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899614965] [2024-11-22 02:09:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899614965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:58,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829291953] [2024-11-22 02:09:58,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:58,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:58,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:58,940 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 02:09:58,942 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 02:09:59,405 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:09:59,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:59,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:59,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 116996 backedges. 1088 proven. 5151 refuted. 0 times theorem prover too weak. 110757 trivial. 0 not checked. [2024-11-22 02:09:59,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 116996 backedges. 1090 proven. 5182 refuted. 0 times theorem prover too weak. 110724 trivial. 0 not checked. [2024-11-22 02:10:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829291953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:05,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2024-11-22 02:10:05,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348623740] [2024-11-22 02:10:05,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:05,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:10:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:10:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:10:05,788 INFO L87 Difference]: Start difference. First operand 241 states and 345 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-22 02:10:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:05,986 INFO L93 Difference]: Finished difference Result 268 states and 395 transitions. [2024-11-22 02:10:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:10:05,987 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 1972 [2024-11-22 02:10:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:05,993 INFO L225 Difference]: With dead ends: 268 [2024-11-22 02:10:05,993 INFO L226 Difference]: Without dead ends: 259 [2024-11-22 02:10:05,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3968 GetRequests, 3933 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:05,994 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:05,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 212 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-22 02:10:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 243. [2024-11-22 02:10:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 169 states have (on average 1.0769230769230769) internal successors, (182), 167 states have internal predecessors, (182), 50 states have call successors, (50), 35 states have call predecessors, (50), 23 states have return successors, (118), 40 states have call predecessors, (118), 50 states have call successors, (118) [2024-11-22 02:10:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 350 transitions. [2024-11-22 02:10:06,029 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 350 transitions. Word has length 1972 [2024-11-22 02:10:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:06,030 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 350 transitions. [2024-11-22 02:10:06,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-22 02:10:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 350 transitions. [2024-11-22 02:10:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1730 [2024-11-22 02:10:06,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:06,066 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 125, 125, 117, 102, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 62, 54, 40, 24, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:06,076 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 02:10:06,267 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 02:10:06,267 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:06,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1077548553, now seen corresponding path program 13 times [2024-11-22 02:10:06,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:06,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521472069] [2024-11-22 02:10:06,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 89813 backedges. 1956 proven. 3745 refuted. 0 times theorem prover too weak. 84112 trivial. 0 not checked. [2024-11-22 02:10:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521472069] [2024-11-22 02:10:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521472069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198294646] [2024-11-22 02:10:08,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:08,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:08,935 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 02:10:08,937 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 02:10:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 3854 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:10:09,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 89813 backedges. 842 proven. 5316 refuted. 0 times theorem prover too weak. 83655 trivial. 0 not checked. [2024-11-22 02:10:09,765 INFO L311 TraceCheckSpWp]: Computing backward predicates...