/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:55:28,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:55:28,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 23:55:28,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:55:28,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:55:28,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:55:28,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:55:28,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:55:28,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:55:28,446 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:55:28,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:55:28,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:55:28,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:55:28,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:55:28,448 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:55:28,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:55:28,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:55:28,449 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:55:28,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:55:28,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:55:28,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:55:28,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:55:28,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:55:28,451 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:55:28,451 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:55:28,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:55:28,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:55:28,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:55:28,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:55:28,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:55:28,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:55:28,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:55:28,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:55:28,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:55:28,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:55:28,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:55:28,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:55:28,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:55:28,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:55:28,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:55:28,455 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:55:28,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:55:28,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:55:28,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:55:28,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:55:28,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:55:28,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:55:28,701 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:55:28,701 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:55:28,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2023-12-19 23:55:29,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:55:29,962 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:55:29,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2023-12-19 23:55:29,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37ea924d/46d4397380e94432ba683294a9d48a95/FLAG52d1ea23a [2023-12-19 23:55:29,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37ea924d/46d4397380e94432ba683294a9d48a95 [2023-12-19 23:55:29,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:55:29,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:55:29,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:55:29,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:55:29,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:55:29,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:55:29" (1/1) ... [2023-12-19 23:55:29,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d413fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:29, skipping insertion in model container [2023-12-19 23:55:29,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:55:29" (1/1) ... [2023-12-19 23:55:30,007 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:55:30,128 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c[946,959] [2023-12-19 23:55:30,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:55:30,142 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:55:30,152 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c[946,959] [2023-12-19 23:55:30,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:55:30,165 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:55:30,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30 WrapperNode [2023-12-19 23:55:30,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:55:30,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:55:30,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:55:30,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:55:30,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,187 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-12-19 23:55:30,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:55:30,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:55:30,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:55:30,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:55:30,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,205 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]. [2023-12-19 23:55:30,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:55:30,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:55:30,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:55:30,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:55:30,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (1/1) ... [2023-12-19 23:55:30,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:55:30,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:30,245 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) [2023-12-19 23:55:30,250 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 [2023-12-19 23:55:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:55:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:55:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-12-19 23:55:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-12-19 23:55:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-12-19 23:55:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-12-19 23:55:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:55:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:55:30,316 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:55:30,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:55:30,416 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:55:30,434 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:55:30,435 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-19 23:55:30,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:55:30 BoogieIcfgContainer [2023-12-19 23:55:30,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:55:30,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:55:30,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:55:30,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:55:30,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:55:29" (1/3) ... [2023-12-19 23:55:30,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f83419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:55:30, skipping insertion in model container [2023-12-19 23:55:30,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:55:30" (2/3) ... [2023-12-19 23:55:30,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f83419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:55:30, skipping insertion in model container [2023-12-19 23:55:30,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:55:30" (3/3) ... [2023-12-19 23:55:30,443 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2023-12-19 23:55:30,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:55:30,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:55:30,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:55:30,502 INFO L357 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, mHoare=true, 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;@42929495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:55:30,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:55:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-12-19 23:55:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 23:55:30,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:30,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:30,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:30,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash -389521846, now seen corresponding path program 1 times [2023-12-19 23:55:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855327961] [2023-12-19 23:55:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:30,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:55:30,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855327961] [2023-12-19 23:55:30,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855327961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:55:30,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:55:30,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 23:55:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549739805] [2023-12-19 23:55:30,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:55:30,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:55:30,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:55:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 23:55:30,761 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-19 23:55:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:30,864 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-12-19 23:55:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:55:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2023-12-19 23:55:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:30,874 INFO L225 Difference]: With dead ends: 34 [2023-12-19 23:55:30,874 INFO L226 Difference]: Without dead ends: 26 [2023-12-19 23:55:30,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:55:30,879 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:30,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 73 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:55:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-19 23:55:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-19 23:55:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2023-12-19 23:55:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-12-19 23:55:30,915 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-12-19 23:55:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:30,915 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-12-19 23:55:30,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-19 23:55:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-12-19 23:55:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-19 23:55:30,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:30,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:30,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 23:55:30,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:30,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1524884472, now seen corresponding path program 1 times [2023-12-19 23:55:30,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576637996] [2023-12-19 23:55:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:30,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:55:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576637996] [2023-12-19 23:55:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576637996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:55:31,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:55:31,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 23:55:31,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193026781] [2023-12-19 23:55:31,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:55:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:55:31,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:31,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:55:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 23:55:31,013 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-12-19 23:55:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:31,088 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2023-12-19 23:55:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:55:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2023-12-19 23:55:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:31,091 INFO L225 Difference]: With dead ends: 32 [2023-12-19 23:55:31,091 INFO L226 Difference]: Without dead ends: 28 [2023-12-19 23:55:31,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:55:31,094 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:31,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:55:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-19 23:55:31,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-12-19 23:55:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2023-12-19 23:55:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-12-19 23:55:31,102 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2023-12-19 23:55:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:31,102 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-12-19 23:55:31,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-12-19 23:55:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-12-19 23:55:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 23:55:31,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:31,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 23:55:31,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:31,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash 741502751, now seen corresponding path program 1 times [2023-12-19 23:55:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:31,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762574331] [2023-12-19 23:55:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:55:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:55:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762574331] [2023-12-19 23:55:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762574331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584858059] [2023-12-19 23:55:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:31,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:31,348 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) [2023-12-19 23:55:31,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 23:55:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:31,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:55:31,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:55:31,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:55:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584858059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:31,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:31,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-12-19 23:55:31,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704331278] [2023-12-19 23:55:31,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:31,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 23:55:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 23:55:31,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:55:31,684 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 13 states, 10 states have (on average 3.1) internal successors, (31), 13 states have internal predecessors, (31), 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) [2023-12-19 23:55:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:31,819 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2023-12-19 23:55:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:55:31,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.1) internal successors, (31), 13 states have internal predecessors, (31), 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 22 [2023-12-19 23:55:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:31,823 INFO L225 Difference]: With dead ends: 54 [2023-12-19 23:55:31,823 INFO L226 Difference]: Without dead ends: 30 [2023-12-19 23:55:31,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-19 23:55:31,827 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:31,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 96 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:55:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-19 23:55:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-12-19 23:55:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 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) [2023-12-19 23:55:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2023-12-19 23:55:31,843 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 22 [2023-12-19 23:55:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:31,843 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2023-12-19 23:55:31,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.1) internal successors, (31), 13 states have internal predecessors, (31), 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) [2023-12-19 23:55:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-12-19 23:55:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 23:55:31,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:31,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:31,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 23:55:32,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:32,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:32,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1785876995, now seen corresponding path program 1 times [2023-12-19 23:55:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:32,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432115849] [2023-12-19 23:55:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:32,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:55:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432115849] [2023-12-19 23:55:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432115849] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070064147] [2023-12-19 23:55:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:32,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:32,214 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) [2023-12-19 23:55:32,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 23:55:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:55:32,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:55:32,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:55:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070064147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:32,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:32,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-12-19 23:55:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299473154] [2023-12-19 23:55:32,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 23:55:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 23:55:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:55:32,474 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 23:55:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:32,602 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2023-12-19 23:55:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:55:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 23 [2023-12-19 23:55:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:32,604 INFO L225 Difference]: With dead ends: 50 [2023-12-19 23:55:32,604 INFO L226 Difference]: Without dead ends: 46 [2023-12-19 23:55:32,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:55:32,605 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:32,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:55:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-19 23:55:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-12-19 23:55:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 30 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-19 23:55:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2023-12-19 23:55:32,614 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 23 [2023-12-19 23:55:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:32,614 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2023-12-19 23:55:32,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 23:55:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2023-12-19 23:55:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 23:55:32,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:32,616 INFO L195 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] [2023-12-19 23:55:32,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 23:55:32,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-19 23:55:32,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:32,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1754399412, now seen corresponding path program 1 times [2023-12-19 23:55:32,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:32,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651833300] [2023-12-19 23:55:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:32,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:55:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 23:55:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:55:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651833300] [2023-12-19 23:55:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651833300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915653593] [2023-12-19 23:55:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:32,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:32,981 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) [2023-12-19 23:55:32,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 23:55:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:55:33,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 23:55:33,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:55:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915653593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:33,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2023-12-19 23:55:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994700257] [2023-12-19 23:55:33,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 23:55:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 23:55:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:55:33,424 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 15 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 15 states have internal predecessors, (46), 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) [2023-12-19 23:55:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:33,602 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2023-12-19 23:55:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:55:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 15 states have internal predecessors, (46), 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 35 [2023-12-19 23:55:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:33,604 INFO L225 Difference]: With dead ends: 104 [2023-12-19 23:55:33,604 INFO L226 Difference]: Without dead ends: 62 [2023-12-19 23:55:33,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-12-19 23:55:33,606 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:33,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 130 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:55:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-19 23:55:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-19 23:55:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.25) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2023-12-19 23:55:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2023-12-19 23:55:33,616 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 35 [2023-12-19 23:55:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:33,617 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2023-12-19 23:55:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 15 states have internal predecessors, (46), 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) [2023-12-19 23:55:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2023-12-19 23:55:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-19 23:55:33,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:33,619 INFO L195 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] [2023-12-19 23:55:33,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:33,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:33,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:33,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2101254926, now seen corresponding path program 1 times [2023-12-19 23:55:33,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:33,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498593480] [2023-12-19 23:55:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:55:33,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:33,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498593480] [2023-12-19 23:55:33,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498593480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129875006] [2023-12-19 23:55:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:33,998 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) [2023-12-19 23:55:34,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 23:55:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:34,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:55:34,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:55:34,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:55:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129875006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:34,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:34,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2023-12-19 23:55:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624413927] [2023-12-19 23:55:34,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 23:55:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 23:55:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 23:55:34,398 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 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) [2023-12-19 23:55:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:34,681 INFO L93 Difference]: Finished difference Result 176 states and 320 transitions. [2023-12-19 23:55:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 23:55:34,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 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 36 [2023-12-19 23:55:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:34,687 INFO L225 Difference]: With dead ends: 176 [2023-12-19 23:55:34,687 INFO L226 Difference]: Without dead ends: 116 [2023-12-19 23:55:34,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-12-19 23:55:34,692 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:34,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 217 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-19 23:55:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2023-12-19 23:55:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 68 states have internal predecessors, (79), 21 states have call successors, (21), 7 states have call predecessors, (21), 15 states have return successors, (65), 26 states have call predecessors, (65), 21 states have call successors, (65) [2023-12-19 23:55:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-12-19 23:55:34,727 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 36 [2023-12-19 23:55:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:34,728 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-12-19 23:55:34,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 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) [2023-12-19 23:55:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-12-19 23:55:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 23:55:34,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:34,735 INFO L195 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] [2023-12-19 23:55:34,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:34,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:34,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:34,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash 644290867, now seen corresponding path program 1 times [2023-12-19 23:55:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755670228] [2023-12-19 23:55:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:34,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:55:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 23:55:35,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755670228] [2023-12-19 23:55:35,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755670228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518465789] [2023-12-19 23:55:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:35,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:35,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:35,206 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) [2023-12-19 23:55:35,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 23:55:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:35,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 23:55:35,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 23:55:35,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 23:55:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518465789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:35,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2023-12-19 23:55:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690247285] [2023-12-19 23:55:35,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:35,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 23:55:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 23:55:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-19 23:55:35,871 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2023-12-19 23:55:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:36,232 INFO L93 Difference]: Finished difference Result 254 states and 494 transitions. [2023-12-19 23:55:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 23:55:36,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) Word has length 50 [2023-12-19 23:55:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:36,234 INFO L225 Difference]: With dead ends: 254 [2023-12-19 23:55:36,235 INFO L226 Difference]: Without dead ends: 154 [2023-12-19 23:55:36,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2023-12-19 23:55:36,236 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:36,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 297 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-19 23:55:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 108. [2023-12-19 23:55:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 71 states have internal predecessors, (86), 24 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (66), 27 states have call predecessors, (66), 24 states have call successors, (66) [2023-12-19 23:55:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 176 transitions. [2023-12-19 23:55:36,253 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 176 transitions. Word has length 50 [2023-12-19 23:55:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:36,253 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 176 transitions. [2023-12-19 23:55:36,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2023-12-19 23:55:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 176 transitions. [2023-12-19 23:55:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 23:55:36,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:36,255 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:36,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:36,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:36,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:36,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash -110138383, now seen corresponding path program 1 times [2023-12-19 23:55:36,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810265294] [2023-12-19 23:55:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:55:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-19 23:55:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810265294] [2023-12-19 23:55:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810265294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466048377] [2023-12-19 23:55:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:36,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:36,813 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) [2023-12-19 23:55:36,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 23:55:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:36,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 23:55:36,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-19 23:55:37,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 23:55:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466048377] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:37,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:37,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2023-12-19 23:55:37,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159557039] [2023-12-19 23:55:37,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 23:55:37,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 23:55:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-12-19 23:55:37,835 INFO L87 Difference]: Start difference. First operand 108 states and 176 transitions. Second operand has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2023-12-19 23:55:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:38,226 INFO L93 Difference]: Finished difference Result 239 states and 461 transitions. [2023-12-19 23:55:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 23:55:38,227 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) Word has length 106 [2023-12-19 23:55:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:38,229 INFO L225 Difference]: With dead ends: 239 [2023-12-19 23:55:38,229 INFO L226 Difference]: Without dead ends: 106 [2023-12-19 23:55:38,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 225 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 23:55:38,231 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 64 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:38,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 218 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-19 23:55:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2023-12-19 23:55:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 57 states have internal predecessors, (66), 14 states have call successors, (14), 8 states have call predecessors, (14), 12 states have return successors, (35), 17 states have call predecessors, (35), 14 states have call successors, (35) [2023-12-19 23:55:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 115 transitions. [2023-12-19 23:55:38,243 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 115 transitions. Word has length 106 [2023-12-19 23:55:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:38,243 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 115 transitions. [2023-12-19 23:55:38,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2023-12-19 23:55:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 115 transitions. [2023-12-19 23:55:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 23:55:38,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:38,248 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 11, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:38,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:38,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:38,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:38,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 959603759, now seen corresponding path program 1 times [2023-12-19 23:55:38,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:38,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201452173] [2023-12-19 23:55:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:55:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:55:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 23:55:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 74 proven. 164 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-12-19 23:55:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201452173] [2023-12-19 23:55:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201452173] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810250866] [2023-12-19 23:55:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:38,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:38,957 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) [2023-12-19 23:55:38,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 23:55:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:39,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 23:55:39,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 61 proven. 144 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-12-19 23:55:39,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 61 proven. 149 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-12-19 23:55:39,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810250866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:39,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:39,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2023-12-19 23:55:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073485274] [2023-12-19 23:55:39,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:39,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 23:55:39,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 23:55:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:55:39,694 INFO L87 Difference]: Start difference. First operand 83 states and 115 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2023-12-19 23:55:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:39,993 INFO L93 Difference]: Finished difference Result 168 states and 247 transitions. [2023-12-19 23:55:39,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 23:55:39,994 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) Word has length 161 [2023-12-19 23:55:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:39,995 INFO L225 Difference]: With dead ends: 168 [2023-12-19 23:55:39,995 INFO L226 Difference]: Without dead ends: 92 [2023-12-19 23:55:39,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 355 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2023-12-19 23:55:39,996 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:39,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 233 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-19 23:55:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2023-12-19 23:55:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 14 states have call successors, (14), 8 states have call predecessors, (14), 13 states have return successors, (35), 18 states have call predecessors, (35), 14 states have call successors, (35) [2023-12-19 23:55:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2023-12-19 23:55:40,003 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 161 [2023-12-19 23:55:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:40,004 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2023-12-19 23:55:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2023-12-19 23:55:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2023-12-19 23:55:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-19 23:55:40,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:40,006 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:40,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:40,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:40,213 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:40,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:40,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1931971445, now seen corresponding path program 1 times [2023-12-19 23:55:40,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:40,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927698271] [2023-12-19 23:55:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 23:55:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 23:55:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 142 proven. 293 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-19 23:55:40,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927698271] [2023-12-19 23:55:40,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927698271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364940481] [2023-12-19 23:55:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:40,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:40,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:40,890 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) [2023-12-19 23:55:40,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 23:55:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:41,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 23:55:41,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 169 proven. 174 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-12-19 23:55:41,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 169 proven. 188 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-12-19 23:55:42,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364940481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:42,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:42,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 15] total 31 [2023-12-19 23:55:42,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165548937] [2023-12-19 23:55:42,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:42,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 23:55:42,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 23:55:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2023-12-19 23:55:42,326 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 31 states, 30 states have (on average 3.0) internal successors, (90), 31 states have internal predecessors, (90), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (38), 19 states have call predecessors, (38), 23 states have call successors, (38) [2023-12-19 23:55:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:43,006 INFO L93 Difference]: Finished difference Result 231 states and 405 transitions. [2023-12-19 23:55:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 23:55:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 31 states have internal predecessors, (90), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (38), 19 states have call predecessors, (38), 23 states have call successors, (38) Word has length 187 [2023-12-19 23:55:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:43,009 INFO L225 Difference]: With dead ends: 231 [2023-12-19 23:55:43,010 INFO L226 Difference]: Without dead ends: 125 [2023-12-19 23:55:43,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 409 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 23:55:43,012 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 98 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:43,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 458 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 23:55:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-19 23:55:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 105. [2023-12-19 23:55:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 71 states have internal predecessors, (83), 18 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (38), 21 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-19 23:55:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 139 transitions. [2023-12-19 23:55:43,024 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 139 transitions. Word has length 187 [2023-12-19 23:55:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:43,025 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 139 transitions. [2023-12-19 23:55:43,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 31 states have internal predecessors, (90), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (38), 19 states have call predecessors, (38), 23 states have call successors, (38) [2023-12-19 23:55:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 139 transitions. [2023-12-19 23:55:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-19 23:55:43,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:43,028 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:43,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 23:55:43,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:43,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1844142558, now seen corresponding path program 2 times [2023-12-19 23:55:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:43,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169859279] [2023-12-19 23:55:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:43,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:55:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:55:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 130 proven. 259 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2023-12-19 23:55:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169859279] [2023-12-19 23:55:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169859279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434266735] [2023-12-19 23:55:43,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:55:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:43,834 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) [2023-12-19 23:55:43,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 23:55:43,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:55:43,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:43,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 23:55:43,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 203 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2023-12-19 23:55:44,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 208 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2023-12-19 23:55:44,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434266735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:44,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:44,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 22 [2023-12-19 23:55:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121950408] [2023-12-19 23:55:44,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 23:55:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 23:55:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-19 23:55:44,742 INFO L87 Difference]: Start difference. First operand 105 states and 139 transitions. Second operand has 22 states, 20 states have (on average 3.6) internal successors, (72), 22 states have internal predecessors, (72), 15 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2023-12-19 23:55:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:45,025 INFO L93 Difference]: Finished difference Result 224 states and 304 transitions. [2023-12-19 23:55:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 23:55:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.6) internal successors, (72), 22 states have internal predecessors, (72), 15 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) Word has length 227 [2023-12-19 23:55:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:45,027 INFO L225 Difference]: With dead ends: 224 [2023-12-19 23:55:45,027 INFO L226 Difference]: Without dead ends: 128 [2023-12-19 23:55:45,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 505 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:55:45,028 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:45,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 252 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-19 23:55:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2023-12-19 23:55:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 71 states have internal predecessors, (83), 18 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (35), 21 states have call predecessors, (35), 18 states have call successors, (35) [2023-12-19 23:55:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2023-12-19 23:55:45,035 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 227 [2023-12-19 23:55:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:45,036 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2023-12-19 23:55:45,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.6) internal successors, (72), 22 states have internal predecessors, (72), 15 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2023-12-19 23:55:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2023-12-19 23:55:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 23:55:45,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:45,038 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:45,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:45,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:45,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:45,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1451526342, now seen corresponding path program 3 times [2023-12-19 23:55:45,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977924266] [2023-12-19 23:55:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:55:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-19 23:55:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977924266] [2023-12-19 23:55:46,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977924266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290011545] [2023-12-19 23:55:46,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:55:46,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:46,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:46,834 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) [2023-12-19 23:55:46,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 23:55:46,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-19 23:55:46,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:46,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 103 conjunts are in the unsatisfiable core [2023-12-19 23:55:46,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-19 23:55:47,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-19 23:55:48,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290011545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:48,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2023-12-19 23:55:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811903147] [2023-12-19 23:55:48,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 23:55:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:48,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 23:55:48,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 23:55:48,007 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 19 states have internal predecessors, (46), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2023-12-19 23:55:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:48,287 INFO L93 Difference]: Finished difference Result 119 states and 158 transitions. [2023-12-19 23:55:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 23:55:48,287 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 19 states have internal predecessors, (46), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) Word has length 173 [2023-12-19 23:55:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:48,289 INFO L225 Difference]: With dead ends: 119 [2023-12-19 23:55:48,289 INFO L226 Difference]: Without dead ends: 115 [2023-12-19 23:55:48,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 23:55:48,290 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:48,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1363 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:55:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-19 23:55:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2023-12-19 23:55:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.1466666666666667) internal successors, (86), 74 states have internal predecessors, (86), 19 states have call successors, (19), 12 states have call predecessors, (19), 15 states have return successors, (44), 23 states have call predecessors, (44), 19 states have call successors, (44) [2023-12-19 23:55:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2023-12-19 23:55:48,298 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 173 [2023-12-19 23:55:48,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:48,299 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2023-12-19 23:55:48,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 19 states have internal predecessors, (46), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2023-12-19 23:55:48,299 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2023-12-19 23:55:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-19 23:55:48,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:48,301 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:48,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:48,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 23:55:48,508 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:48,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2104713271, now seen corresponding path program 4 times [2023-12-19 23:55:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846497157] [2023-12-19 23:55:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:48,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:55:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 193 proven. 340 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-19 23:55:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846497157] [2023-12-19 23:55:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846497157] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641756130] [2023-12-19 23:55:49,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:55:49,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:49,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:49,234 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) [2023-12-19 23:55:49,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 23:55:49,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:55:49,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:49,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 23:55:49,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 219 proven. 409 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-12-19 23:55:49,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 219 proven. 427 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2023-12-19 23:55:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641756130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:51,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 23] total 38 [2023-12-19 23:55:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131594318] [2023-12-19 23:55:51,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 23:55:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 23:55:51,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 23:55:51,304 INFO L87 Difference]: Start difference. First operand 110 states and 149 transitions. Second operand has 38 states, 37 states have (on average 3.027027027027027) internal successors, (112), 38 states have internal predecessors, (112), 31 states have call successors, (37), 1 states have call predecessors, (37), 13 states have return successors, (46), 19 states have call predecessors, (46), 31 states have call successors, (46) [2023-12-19 23:55:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:51,933 INFO L93 Difference]: Finished difference Result 248 states and 370 transitions. [2023-12-19 23:55:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 23:55:51,937 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.027027027027027) internal successors, (112), 38 states have internal predecessors, (112), 31 states have call successors, (37), 1 states have call predecessors, (37), 13 states have return successors, (46), 19 states have call predecessors, (46), 31 states have call successors, (46) Word has length 214 [2023-12-19 23:55:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:51,939 INFO L225 Difference]: With dead ends: 248 [2023-12-19 23:55:51,939 INFO L226 Difference]: Without dead ends: 140 [2023-12-19 23:55:51,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 460 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=493, Invalid=2587, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 23:55:51,941 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 123 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:51,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 420 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 23:55:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-19 23:55:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2023-12-19 23:55:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 85 states have internal predecessors, (97), 22 states have call successors, (22), 16 states have call predecessors, (22), 15 states have return successors, (48), 23 states have call predecessors, (48), 22 states have call successors, (48) [2023-12-19 23:55:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 167 transitions. [2023-12-19 23:55:51,950 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 167 transitions. Word has length 214 [2023-12-19 23:55:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:51,950 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 167 transitions. [2023-12-19 23:55:51,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.027027027027027) internal successors, (112), 38 states have internal predecessors, (112), 31 states have call successors, (37), 1 states have call predecessors, (37), 13 states have return successors, (46), 19 states have call predecessors, (46), 31 states have call successors, (46) [2023-12-19 23:55:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 167 transitions. [2023-12-19 23:55:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 23:55:51,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:51,952 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:51,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:52,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 23:55:52,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:52,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1699641540, now seen corresponding path program 5 times [2023-12-19 23:55:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184269285] [2023-12-19 23:55:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:55:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-19 23:55:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184269285] [2023-12-19 23:55:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184269285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921455508] [2023-12-19 23:55:52,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:55:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:52,551 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) [2023-12-19 23:55:52,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 23:55:52,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-19 23:55:52,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:52,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 23:55:52,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 150 proven. 142 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-19 23:55:52,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 152 proven. 146 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-19 23:55:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921455508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:53,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 30 [2023-12-19 23:55:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751778242] [2023-12-19 23:55:53,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:53,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 23:55:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 23:55:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2023-12-19 23:55:53,795 INFO L87 Difference]: Start difference. First operand 125 states and 167 transitions. Second operand has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) [2023-12-19 23:55:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:54,118 INFO L93 Difference]: Finished difference Result 261 states and 364 transitions. [2023-12-19 23:55:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 23:55:54,121 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) Word has length 146 [2023-12-19 23:55:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:54,122 INFO L225 Difference]: With dead ends: 261 [2023-12-19 23:55:54,122 INFO L226 Difference]: Without dead ends: 136 [2023-12-19 23:55:54,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 311 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 23:55:54,123 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 91 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:54,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 296 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-19 23:55:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2023-12-19 23:55:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 92 states have (on average 1.0869565217391304) internal successors, (100), 88 states have internal predecessors, (100), 23 states have call successors, (23), 18 states have call predecessors, (23), 15 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2023-12-19 23:55:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 165 transitions. [2023-12-19 23:55:54,133 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 165 transitions. Word has length 146 [2023-12-19 23:55:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:54,133 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 165 transitions. [2023-12-19 23:55:54,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) [2023-12-19 23:55:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 165 transitions. [2023-12-19 23:55:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-19 23:55:54,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:54,136 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 15, 14, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:54,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:54,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 23:55:54,348 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:54,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash -726763103, now seen corresponding path program 6 times [2023-12-19 23:55:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:54,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863446612] [2023-12-19 23:55:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:55:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 23:55:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 164 proven. 300 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-12-19 23:55:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863446612] [2023-12-19 23:55:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863446612] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241486987] [2023-12-19 23:55:54,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:55:54,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:54,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:54,928 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) [2023-12-19 23:55:54,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 23:55:55,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-19 23:55:55,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:55,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 23:55:55,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 872 proven. 71 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2023-12-19 23:55:55,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 146 proven. 447 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2023-12-19 23:55:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241486987] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:56,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 26 [2023-12-19 23:55:56,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966362737] [2023-12-19 23:55:56,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:56,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 23:55:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 23:55:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-12-19 23:55:56,490 INFO L87 Difference]: Start difference. First operand 131 states and 165 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 18 states have call successors, (29), 2 states have call predecessors, (29), 9 states have return successors, (34), 11 states have call predecessors, (34), 18 states have call successors, (34) [2023-12-19 23:55:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:56,798 INFO L93 Difference]: Finished difference Result 265 states and 348 transitions. [2023-12-19 23:55:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 23:55:56,798 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 18 states have call successors, (29), 2 states have call predecessors, (29), 9 states have return successors, (34), 11 states have call predecessors, (34), 18 states have call successors, (34) Word has length 242 [2023-12-19 23:55:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:56,800 INFO L225 Difference]: With dead ends: 265 [2023-12-19 23:55:56,800 INFO L226 Difference]: Without dead ends: 139 [2023-12-19 23:55:56,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 534 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 23:55:56,801 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:56,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 311 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:55:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-19 23:55:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2023-12-19 23:55:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 90 states have internal predecessors, (102), 23 states have call successors, (23), 20 states have call predecessors, (23), 14 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2023-12-19 23:55:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-12-19 23:55:56,810 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 242 [2023-12-19 23:55:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:56,810 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-12-19 23:55:56,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 18 states have call successors, (29), 2 states have call predecessors, (29), 9 states have return successors, (34), 11 states have call predecessors, (34), 18 states have call successors, (34) [2023-12-19 23:55:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-12-19 23:55:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-19 23:55:56,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:56,812 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 15, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:56,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:57,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 23:55:57,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:57,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1191643284, now seen corresponding path program 7 times [2023-12-19 23:55:57,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:57,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282393509] [2023-12-19 23:55:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:57,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:55:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:55:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-19 23:55:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:55:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:55:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:55:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 23:55:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 230 proven. 366 refuted. 0 times theorem prover too weak. 1198 trivial. 0 not checked. [2023-12-19 23:55:57,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:57,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282393509] [2023-12-19 23:55:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282393509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:57,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122549103] [2023-12-19 23:55:57,681 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:55:57,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:57,682 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) [2023-12-19 23:55:57,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 23:55:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:57,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 23:55:57,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 118 proven. 460 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-19 23:55:58,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 118 proven. 481 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2023-12-19 23:55:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122549103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:59,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:59,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 31 [2023-12-19 23:55:59,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555437789] [2023-12-19 23:55:59,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:59,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 23:55:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 23:55:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2023-12-19 23:55:59,639 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 31 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 31 states have internal predecessors, (94), 24 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 17 states have call predecessors, (38), 24 states have call successors, (38) [2023-12-19 23:55:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:59,993 INFO L93 Difference]: Finished difference Result 247 states and 308 transitions. [2023-12-19 23:55:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 23:55:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 31 states have internal predecessors, (94), 24 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 17 states have call predecessors, (38), 24 states have call successors, (38) Word has length 255 [2023-12-19 23:55:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:59,994 INFO L225 Difference]: With dead ends: 247 [2023-12-19 23:55:59,994 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 23:55:59,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 561 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 23:55:59,995 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:59,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 345 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:55:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 23:55:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 23:55:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:55:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 23:55:59,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2023-12-19 23:55:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:59,996 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 23:55:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 31 states have internal predecessors, (94), 24 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 17 states have call predecessors, (38), 24 states have call successors, (38) [2023-12-19 23:55:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 23:55:59,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 23:55:59,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 23:56:00,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 23:56:00,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:56:00,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 23:56:01,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 23:56:01,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= 6 |ULTIMATE.start_main_~x~0#1|) [2023-12-19 23:56:01,173 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 |fibo2_#in~n|)) [2023-12-19 23:56:01,173 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-12-19 23:56:01,173 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse1 (= |fibo2_#t~ret6| 1))) (let ((.cse0 (and .cse1 (= fibo2_~n 3) (= 3 |fibo2_#in~n|)))) (and (or .cse0 (and (= |fibo2_#t~ret6| 3) (= 5 |fibo2_#in~n|) (= fibo2_~n 5)) (and (<= 6 |fibo2_#in~n|) (= fibo2_~n |fibo2_#in~n|)) (= 2 |fibo2_#in~n|)) (or .cse0 (and .cse1 (= fibo2_~n 2)) (< 4 |fibo2_#in~n|))))) [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L895 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (< 2 |fibo1_#in~n|)) [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (and (= 3 |fibo1_#in~n|) (= |fibo1_#t~ret4| 1) (= fibo1_~n 3)))) (and (or (< 4 |fibo1_#in~n|) .cse0 (= fibo1_~n 4)) (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (= 6 |fibo1_#in~n|) (= 5 |fibo1_#t~ret4|) (= fibo1_~n 6)) (and (<= 7 |fibo1_#in~n|) .cse1) .cse0 (and (= 2 |fibo1_#t~ret4|) (= |fibo1_#in~n| 4)) (and (<= |fibo1_#in~n| 5) .cse1 (<= 5 fibo1_~n)))))) [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2023-12-19 23:56:01,174 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-12-19 23:56:01,175 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-12-19 23:56:01,175 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-12-19 23:56:01,175 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-12-19 23:56:01,177 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:56:01,179 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 23:56:01,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 11:56:01 BoogieIcfgContainer [2023-12-19 23:56:01,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 23:56:01,182 INFO L158 Benchmark]: Toolchain (without parser) took 31202.35ms. Allocated memory was 316.7MB in the beginning and 675.3MB in the end (delta: 358.6MB). Free memory was 267.3MB in the beginning and 579.8MB in the end (delta: -312.5MB). Peak memory consumption was 390.1MB. Max. memory is 8.0GB. [2023-12-19 23:56:01,182 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 198.2MB. Free memory was 145.5MB in the beginning and 145.4MB in the end (delta: 172.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 23:56:01,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.22ms. Allocated memory is still 316.7MB. Free memory was 267.3MB in the beginning and 256.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 23:56:01,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.53ms. Allocated memory is still 316.7MB. Free memory was 256.8MB in the beginning and 255.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 23:56:01,183 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 316.7MB. Free memory was 255.2MB in the beginning and 253.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 23:56:01,183 INFO L158 Benchmark]: RCFGBuilder took 223.44ms. Allocated memory is still 316.7MB. Free memory was 253.7MB in the beginning and 242.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 23:56:01,184 INFO L158 Benchmark]: TraceAbstraction took 30744.57ms. Allocated memory was 316.7MB in the beginning and 675.3MB in the end (delta: 358.6MB). Free memory was 241.6MB in the beginning and 579.8MB in the end (delta: -338.2MB). Peak memory consumption was 364.9MB. Max. memory is 8.0GB. [2023-12-19 23:56:01,185 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 198.2MB. Free memory was 145.5MB in the beginning and 145.4MB in the end (delta: 172.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.22ms. Allocated memory is still 316.7MB. Free memory was 267.3MB in the beginning and 256.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.53ms. Allocated memory is still 316.7MB. Free memory was 256.8MB in the beginning and 255.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 316.7MB. Free memory was 255.2MB in the beginning and 253.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 223.44ms. Allocated memory is still 316.7MB. Free memory was 253.7MB in the beginning and 242.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 30744.57ms. Allocated memory was 316.7MB in the beginning and 675.3MB in the end (delta: 358.6MB). Free memory was 241.6MB in the beginning and 579.8MB in the end (delta: -338.2MB). Peak memory consumption was 364.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.7s, OverallIterations: 16, TraceHistogramMax: 19, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 892 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 821 mSDsluCounter, 4842 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4393 mSDsCounter, 601 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6335 IncrementalHoareTripleChecker+Invalid, 6936 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 601 mSolverCounterUnsat, 449 mSDtfsCounter, 6335 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4627 GetRequests, 4119 SyntacticMatches, 71 SemanticMatches, 437 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=15, InterpolantAutomatonStates: 313, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 169 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 679 PreInvPairs, 1057 NumberOfFragments, 135 HoareAnnotationTreeSize, 679 FormulaSimplifications, 12703 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FormulaSimplificationsInter, 5018 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 3773 NumberOfCodeBlocks, 3642 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 5606 ConstructedInterpolants, 0 QuantifiedInterpolants, 9826 SizeOfPredicates, 63 NumberOfNonLiveVariables, 4105 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 44 InterpolantComputations, 2 PerfectInterpolantSequences, 21460/28170 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-19 23:56:01,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...