/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/combinations/Problem05_label46+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:28:05,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:28:05,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:28:05,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:28:05,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:28:05,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:28:05,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:28:05,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:28:05,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:28:05,563 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:28:05,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:28:05,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:28:05,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:28:05,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:28:05,564 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:28:05,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:28:05,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:28:05,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:28:05,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:28:05,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:28:05,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:28:05,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:28:05,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:28:05,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:28:05,567 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:28:05,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:28:05,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:28:05,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:28:05,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:28:05,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:28:05,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:28:05,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:28:05,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:28:05,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:28:05,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:28:05,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:28:05,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:28:05,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:28:05,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:28:05,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:28:05,581 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:28:05,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:28:05,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:28:05,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:28:05,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:28:05,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:28:05,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:28:05,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:28:05,852 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:28:05,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c [2023-12-18 22:28:06,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:28:07,409 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:28:07,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c [2023-12-18 22:28:07,457 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395842cf7/ab4780faa11a4150b35566dec1b52428/FLAG4da00bc88 [2023-12-18 22:28:07,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395842cf7/ab4780faa11a4150b35566dec1b52428 [2023-12-18 22:28:07,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:28:07,477 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:28:07,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:28:07,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:28:07,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:28:07,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:28:07" (1/1) ... [2023-12-18 22:28:07,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d18fc0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:07, skipping insertion in model container [2023-12-18 22:28:07,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:28:07" (1/1) ... [2023-12-18 22:28:07,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:28:09,006 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c[382357,382370] [2023-12-18 22:28:09,030 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c[383339,383352] [2023-12-18 22:28:09,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:28:09,356 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:28:09,963 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c[382357,382370] [2023-12-18 22:28:09,971 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c[383339,383352] [2023-12-18 22:28:10,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:28:10,076 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:28:10,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10 WrapperNode [2023-12-18 22:28:10,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:28:10,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:28:10,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:28:10,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:28:10,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,517 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13237 [2023-12-18 22:28:10,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:28:10,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:28:10,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:28:10,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:28:10,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,645 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]. [2023-12-18 22:28:10,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:10,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:11,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:28:11,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:28:11,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:28:11,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:28:11,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (1/1) ... [2023-12-18 22:28:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:28:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:28:11,094 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) [2023-12-18 22:28:11,100 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 [2023-12-18 22:28:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:28:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:28:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:28:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:28:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:28:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:28:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:28:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:28:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:28:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:28:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:28:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:28:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:28:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:28:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:28:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:28:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:28:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:28:11,242 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:28:11,244 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:28:16,986 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:28:17,077 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:28:17,078 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-18 22:28:17,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:28:17 BoogieIcfgContainer [2023-12-18 22:28:17,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:28:17,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:28:17,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:28:17,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:28:17,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:28:07" (1/3) ... [2023-12-18 22:28:17,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765de0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:28:17, skipping insertion in model container [2023-12-18 22:28:17,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:10" (2/3) ... [2023-12-18 22:28:17,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765de0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:28:17, skipping insertion in model container [2023-12-18 22:28:17,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:28:17" (3/3) ... [2023-12-18 22:28:17,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.14.cil.c [2023-12-18 22:28:17,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:28:17,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:28:17,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:28:17,192 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;@62b6f8f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:28:17,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:28:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 2477 states, 2439 states have (on average 1.8757687576875768) internal successors, (4575), 2444 states have internal predecessors, (4575), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-18 22:28:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:17,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:17,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:17,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:17,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash -282034047, now seen corresponding path program 1 times [2023-12-18 22:28:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:17,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937937621] [2023-12-18 22:28:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:17,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937937621] [2023-12-18 22:28:17,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937937621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:17,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:17,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:28:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119581495] [2023-12-18 22:28:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:28:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:28:17,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:28:17,701 INFO L87 Difference]: Start difference. First operand has 2477 states, 2439 states have (on average 1.8757687576875768) internal successors, (4575), 2444 states have internal predecessors, (4575), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:19,342 INFO L93 Difference]: Finished difference Result 5079 states and 9486 transitions. [2023-12-18 22:28:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:28:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:19,362 INFO L225 Difference]: With dead ends: 5079 [2023-12-18 22:28:19,362 INFO L226 Difference]: Without dead ends: 2602 [2023-12-18 22:28:19,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:28:19,371 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 989 mSDsluCounter, 12214 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 16478 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:19,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 16478 Invalid, 1131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:28:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2023-12-18 22:28:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2472. [2023-12-18 22:28:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2436 states have (on average 1.8370279146141215) internal successors, (4475), 2439 states have internal predecessors, (4475), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-18 22:28:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 4529 transitions. [2023-12-18 22:28:19,467 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 4529 transitions. Word has length 162 [2023-12-18 22:28:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:19,467 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 4529 transitions. [2023-12-18 22:28:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 4529 transitions. [2023-12-18 22:28:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:19,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:19,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:19,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:28:19,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:19,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1487437567, now seen corresponding path program 1 times [2023-12-18 22:28:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790093589] [2023-12-18 22:28:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:19,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:19,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790093589] [2023-12-18 22:28:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790093589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:19,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:19,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146891503] [2023-12-18 22:28:19,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:19,682 INFO L87 Difference]: Start difference. First operand 2472 states and 4529 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:21,931 INFO L93 Difference]: Finished difference Result 2982 states and 5392 transitions. [2023-12-18 22:28:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:28:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:21,940 INFO L225 Difference]: With dead ends: 2982 [2023-12-18 22:28:21,940 INFO L226 Difference]: Without dead ends: 2644 [2023-12-18 22:28:21,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-18 22:28:21,943 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 1149 mSDsluCounter, 20635 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 24895 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:21,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 24895 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 22:28:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-12-18 22:28:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2474. [2023-12-18 22:28:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2438 states have (on average 1.8359310910582445) internal successors, (4476), 2441 states have internal predecessors, (4476), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-18 22:28:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4530 transitions. [2023-12-18 22:28:21,991 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4530 transitions. Word has length 162 [2023-12-18 22:28:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:21,991 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4530 transitions. [2023-12-18 22:28:21,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4530 transitions. [2023-12-18 22:28:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:21,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:21,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:21,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:28:21,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:21,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash 395345595, now seen corresponding path program 1 times [2023-12-18 22:28:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:21,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028733694] [2023-12-18 22:28:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:22,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028733694] [2023-12-18 22:28:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028733694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:22,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:28:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534378621] [2023-12-18 22:28:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:22,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:28:22,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:28:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:28:22,342 INFO L87 Difference]: Start difference. First operand 2474 states and 4530 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:25,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:25,012 INFO L93 Difference]: Finished difference Result 3427 states and 6120 transitions. [2023-12-18 22:28:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:28:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:25,023 INFO L225 Difference]: With dead ends: 3427 [2023-12-18 22:28:25,023 INFO L226 Difference]: Without dead ends: 3092 [2023-12-18 22:28:25,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:28:25,029 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 5445 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:25,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 16905 Invalid, 2418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:28:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2023-12-18 22:28:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2827. [2023-12-18 22:28:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2763 states have (on average 1.8139703221136445) internal successors, (5012), 2767 states have internal predecessors, (5012), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-18 22:28:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 5111 transitions. [2023-12-18 22:28:25,224 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 5111 transitions. Word has length 162 [2023-12-18 22:28:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:25,225 INFO L495 AbstractCegarLoop]: Abstraction has 2827 states and 5111 transitions. [2023-12-18 22:28:25,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 5111 transitions. [2023-12-18 22:28:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:25,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:25,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:25,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:28:25,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:25,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1810022789, now seen corresponding path program 1 times [2023-12-18 22:28:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:25,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328748934] [2023-12-18 22:28:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:25,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328748934] [2023-12-18 22:28:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328748934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:25,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:25,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143832148] [2023-12-18 22:28:25,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:25,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:25,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:25,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:25,568 INFO L87 Difference]: Start difference. First operand 2827 states and 5111 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:29,115 INFO L93 Difference]: Finished difference Result 4284 states and 7544 transitions. [2023-12-18 22:28:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:28:29,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:29,125 INFO L225 Difference]: With dead ends: 4284 [2023-12-18 22:28:29,125 INFO L226 Difference]: Without dead ends: 3596 [2023-12-18 22:28:29,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:28:29,128 INFO L413 NwaCegarLoop]: 4433 mSDtfsCounter, 5480 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 21838 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:29,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5499 Valid, 21838 Invalid, 3805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 22:28:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2023-12-18 22:28:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3153. [2023-12-18 22:28:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3061 states have (on average 1.7948382881411304) internal successors, (5494), 3066 states have internal predecessors, (5494), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-18 22:28:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5637 transitions. [2023-12-18 22:28:29,201 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5637 transitions. Word has length 162 [2023-12-18 22:28:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:29,202 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 5637 transitions. [2023-12-18 22:28:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5637 transitions. [2023-12-18 22:28:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:29,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:29,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:28:29,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:29,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1399412423, now seen corresponding path program 1 times [2023-12-18 22:28:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216183013] [2023-12-18 22:28:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:29,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216183013] [2023-12-18 22:28:29,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216183013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:29,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:29,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053360937] [2023-12-18 22:28:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:29,495 INFO L87 Difference]: Start difference. First operand 3153 states and 5637 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:32,744 INFO L93 Difference]: Finished difference Result 5541 states and 9618 transitions. [2023-12-18 22:28:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:28:32,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:32,764 INFO L225 Difference]: With dead ends: 5541 [2023-12-18 22:28:32,764 INFO L226 Difference]: Without dead ends: 4527 [2023-12-18 22:28:32,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:28:32,766 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 5592 mSDsluCounter, 16878 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5611 SdHoareTripleChecker+Valid, 21115 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:32,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5611 Valid, 21115 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 22:28:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2023-12-18 22:28:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 3806. [2023-12-18 22:28:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7657189721159103) internal successors, (6459), 3665 states have internal predecessors, (6459), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-18 22:28:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6694 transitions. [2023-12-18 22:28:32,862 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6694 transitions. Word has length 162 [2023-12-18 22:28:32,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:32,863 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6694 transitions. [2023-12-18 22:28:32,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6694 transitions. [2023-12-18 22:28:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:32,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:32,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:28:32,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:32,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1107685051, now seen corresponding path program 1 times [2023-12-18 22:28:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965735360] [2023-12-18 22:28:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965735360] [2023-12-18 22:28:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965735360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:33,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:33,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:33,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818269856] [2023-12-18 22:28:33,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:33,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:33,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:33,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:33,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:33,091 INFO L87 Difference]: Start difference. First operand 3806 states and 6694 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:34,444 INFO L93 Difference]: Finished difference Result 6182 states and 10666 transitions. [2023-12-18 22:28:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:28:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:34,467 INFO L225 Difference]: With dead ends: 6182 [2023-12-18 22:28:34,467 INFO L226 Difference]: Without dead ends: 4515 [2023-12-18 22:28:34,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:28:34,476 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5203 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 16712 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:34,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5223 Valid, 16712 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:28:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2023-12-18 22:28:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 3806. [2023-12-18 22:28:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7643521049753963) internal successors, (6454), 3665 states have internal predecessors, (6454), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-18 22:28:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6689 transitions. [2023-12-18 22:28:34,567 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6689 transitions. Word has length 162 [2023-12-18 22:28:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:34,567 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6689 transitions. [2023-12-18 22:28:34,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6689 transitions. [2023-12-18 22:28:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:34,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:34,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:28:34,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:34,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1028198151, now seen corresponding path program 1 times [2023-12-18 22:28:34,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:34,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642859029] [2023-12-18 22:28:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:34,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:34,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642859029] [2023-12-18 22:28:34,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642859029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:34,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:34,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164343128] [2023-12-18 22:28:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:34,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:34,754 INFO L87 Difference]: Start difference. First operand 3806 states and 6689 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:36,254 INFO L93 Difference]: Finished difference Result 6171 states and 10630 transitions. [2023-12-18 22:28:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:28:36,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:36,268 INFO L225 Difference]: With dead ends: 6171 [2023-12-18 22:28:36,268 INFO L226 Difference]: Without dead ends: 4504 [2023-12-18 22:28:36,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:28:36,272 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5199 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5219 SdHoareTripleChecker+Valid, 16712 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:36,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5219 Valid, 16712 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:28:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2023-12-18 22:28:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3806. [2023-12-18 22:28:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7629852378348825) internal successors, (6449), 3665 states have internal predecessors, (6449), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-18 22:28:36,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6684 transitions. [2023-12-18 22:28:36,345 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6684 transitions. Word has length 162 [2023-12-18 22:28:36,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:36,345 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6684 transitions. [2023-12-18 22:28:36,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:36,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6684 transitions. [2023-12-18 22:28:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:36,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:36,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:36,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:28:36,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:36,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -610309449, now seen corresponding path program 1 times [2023-12-18 22:28:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152785359] [2023-12-18 22:28:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152785359] [2023-12-18 22:28:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152785359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:36,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376331328] [2023-12-18 22:28:36,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:36,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:36,533 INFO L87 Difference]: Start difference. First operand 3806 states and 6684 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:39,679 INFO L93 Difference]: Finished difference Result 7933 states and 13493 transitions. [2023-12-18 22:28:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:28:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:39,697 INFO L225 Difference]: With dead ends: 7933 [2023-12-18 22:28:39,697 INFO L226 Difference]: Without dead ends: 6266 [2023-12-18 22:28:39,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:28:39,703 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5463 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5482 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:39,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5482 Valid, 21836 Invalid, 3728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 22:28:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2023-12-18 22:28:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 5127. [2023-12-18 22:28:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4867 states have (on average 1.724265461269776) internal successors, (8392), 4878 states have internal predecessors, (8392), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-18 22:28:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 8817 transitions. [2023-12-18 22:28:39,830 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 8817 transitions. Word has length 162 [2023-12-18 22:28:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:39,831 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 8817 transitions. [2023-12-18 22:28:39,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 8817 transitions. [2023-12-18 22:28:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:39,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:39,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:28:39,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:39,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash 788644153, now seen corresponding path program 1 times [2023-12-18 22:28:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892539670] [2023-12-18 22:28:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:40,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892539670] [2023-12-18 22:28:40,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892539670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:40,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:40,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993769976] [2023-12-18 22:28:40,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:40,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:40,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:40,017 INFO L87 Difference]: Start difference. First operand 5127 states and 8817 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:41,820 INFO L93 Difference]: Finished difference Result 9277 states and 15699 transitions. [2023-12-18 22:28:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:28:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:41,835 INFO L225 Difference]: With dead ends: 9277 [2023-12-18 22:28:41,835 INFO L226 Difference]: Without dead ends: 6289 [2023-12-18 22:28:41,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:28:41,843 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5045 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:41,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 20836 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:28:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2023-12-18 22:28:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5127. [2023-12-18 22:28:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4867 states have (on average 1.7224162728580235) internal successors, (8383), 4878 states have internal predecessors, (8383), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-18 22:28:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 8808 transitions. [2023-12-18 22:28:41,964 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 8808 transitions. Word has length 162 [2023-12-18 22:28:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:41,964 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 8808 transitions. [2023-12-18 22:28:41,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 8808 transitions. [2023-12-18 22:28:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:41,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:41,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:41,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:28:41,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:41,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash -828796297, now seen corresponding path program 1 times [2023-12-18 22:28:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:41,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556614479] [2023-12-18 22:28:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556614479] [2023-12-18 22:28:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556614479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:42,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:42,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362533988] [2023-12-18 22:28:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:42,169 INFO L87 Difference]: Start difference. First operand 5127 states and 8808 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:45,823 INFO L93 Difference]: Finished difference Result 12744 states and 21314 transitions. [2023-12-18 22:28:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:28:45,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:45,846 INFO L225 Difference]: With dead ends: 12744 [2023-12-18 22:28:45,846 INFO L226 Difference]: Without dead ends: 9756 [2023-12-18 22:28:45,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:28:45,859 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5455 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3623 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:45,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5474 Valid, 21836 Invalid, 3690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3623 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 22:28:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9756 states. [2023-12-18 22:28:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9756 to 7779. [2023-12-18 22:28:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7779 states, 7295 states have (on average 1.6818368745716243) internal successors, (12269), 7314 states have internal predecessors, (12269), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-18 22:28:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 13092 transitions. [2023-12-18 22:28:46,072 INFO L78 Accepts]: Start accepts. Automaton has 7779 states and 13092 transitions. Word has length 162 [2023-12-18 22:28:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:46,072 INFO L495 AbstractCegarLoop]: Abstraction has 7779 states and 13092 transitions. [2023-12-18 22:28:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7779 states and 13092 transitions. [2023-12-18 22:28:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:46,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:46,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:46,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:28:46,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:46,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash -465329799, now seen corresponding path program 1 times [2023-12-18 22:28:46,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:46,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722844848] [2023-12-18 22:28:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:46,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:46,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722844848] [2023-12-18 22:28:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722844848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252394382] [2023-12-18 22:28:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:46,276 INFO L87 Difference]: Start difference. First operand 7779 states and 13092 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:49,980 INFO L93 Difference]: Finished difference Result 22382 states and 37088 transitions. [2023-12-18 22:28:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:28:49,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:49,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:50,072 INFO L225 Difference]: With dead ends: 22382 [2023-12-18 22:28:50,073 INFO L226 Difference]: Without dead ends: 16742 [2023-12-18 22:28:50,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:28:50,103 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5454 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:50,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 21836 Invalid, 3677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 22:28:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16742 states. [2023-12-18 22:28:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16742 to 13096. [2023-12-18 22:28:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13096 states, 12164 states have (on average 1.6490463663268662) internal successors, (20059), 12199 states have internal predecessors, (20059), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-18 22:28:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13096 states to 13096 states and 21732 transitions. [2023-12-18 22:28:50,480 INFO L78 Accepts]: Start accepts. Automaton has 13096 states and 21732 transitions. Word has length 162 [2023-12-18 22:28:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:50,481 INFO L495 AbstractCegarLoop]: Abstraction has 13096 states and 21732 transitions. [2023-12-18 22:28:50,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13096 states and 21732 transitions. [2023-12-18 22:28:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:50,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:50,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:50,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:28:50,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:50,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash -176510409, now seen corresponding path program 1 times [2023-12-18 22:28:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603082055] [2023-12-18 22:28:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:50,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603082055] [2023-12-18 22:28:50,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603082055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:50,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:50,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617464762] [2023-12-18 22:28:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:50,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:50,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:50,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:50,690 INFO L87 Difference]: Start difference. First operand 13096 states and 21732 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:54,251 INFO L93 Difference]: Finished difference Result 41657 states and 68826 transitions. [2023-12-18 22:28:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:28:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:54,344 INFO L225 Difference]: With dead ends: 41657 [2023-12-18 22:28:54,345 INFO L226 Difference]: Without dead ends: 30700 [2023-12-18 22:28:54,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:28:54,383 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 5553 mSDsluCounter, 16878 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 21115 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:54,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 21115 Invalid, 3112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 22:28:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30700 states. [2023-12-18 22:28:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30700 to 23761. [2023-12-18 22:28:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 21933 states have (on average 1.6270004103405826) internal successors, (35685), 22000 states have internal predecessors, (35685), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-18 22:28:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 39220 transitions. [2023-12-18 22:28:55,299 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 39220 transitions. Word has length 162 [2023-12-18 22:28:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:55,300 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 39220 transitions. [2023-12-18 22:28:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 39220 transitions. [2023-12-18 22:28:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:55,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:55,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:28:55,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:55,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash -721382983, now seen corresponding path program 1 times [2023-12-18 22:28:55,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:55,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569061404] [2023-12-18 22:28:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:55,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569061404] [2023-12-18 22:28:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569061404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:55,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:55,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068040740] [2023-12-18 22:28:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:55,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:55,498 INFO L87 Difference]: Start difference. First operand 23761 states and 39220 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:57,863 INFO L93 Difference]: Finished difference Result 52753 states and 87822 transitions. [2023-12-18 22:28:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:28:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:28:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:57,964 INFO L225 Difference]: With dead ends: 52753 [2023-12-18 22:28:57,964 INFO L226 Difference]: Without dead ends: 31131 [2023-12-18 22:28:58,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:28:58,012 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5051 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5071 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:58,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5071 Valid, 20836 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:28:58,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2023-12-18 22:28:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 23761. [2023-12-18 22:28:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 21933 states have (on average 1.6240368394656455) internal successors, (35620), 22000 states have internal predecessors, (35620), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-18 22:28:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 39155 transitions. [2023-12-18 22:28:58,782 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 39155 transitions. Word has length 162 [2023-12-18 22:28:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:58,783 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 39155 transitions. [2023-12-18 22:28:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 39155 transitions. [2023-12-18 22:28:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:28:58,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:58,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:58,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:28:58,795 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:58,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash -46222857, now seen corresponding path program 1 times [2023-12-18 22:28:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757554800] [2023-12-18 22:28:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:28:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:28:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:28:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:28:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:58,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757554800] [2023-12-18 22:28:58,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757554800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:58,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:58,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:58,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834050353] [2023-12-18 22:28:58,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:58,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:58,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:58,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:58,981 INFO L87 Difference]: Start difference. First operand 23761 states and 39155 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:29:03,916 INFO L93 Difference]: Finished difference Result 90060 states and 148382 transitions. [2023-12-18 22:29:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:29:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:29:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:29:04,148 INFO L225 Difference]: With dead ends: 90060 [2023-12-18 22:29:04,148 INFO L226 Difference]: Without dead ends: 68438 [2023-12-18 22:29:04,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:29:04,219 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5881 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5913 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:29:04,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5913 Valid, 21829 Invalid, 3600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 22:29:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68438 states. [2023-12-18 22:29:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68438 to 45156. [2023-12-18 22:29:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45156 states, 41600 states have (on average 1.6113942307692308) internal successors, (67034), 41731 states have internal predecessors, (67034), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-18 22:29:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45156 states to 45156 states and 74651 transitions. [2023-12-18 22:29:06,281 INFO L78 Accepts]: Start accepts. Automaton has 45156 states and 74651 transitions. Word has length 162 [2023-12-18 22:29:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:29:06,281 INFO L495 AbstractCegarLoop]: Abstraction has 45156 states and 74651 transitions. [2023-12-18 22:29:06,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 45156 states and 74651 transitions. [2023-12-18 22:29:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:29:06,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:29:06,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:29:06,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:29:06,299 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:29:06,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:29:06,300 INFO L85 PathProgramCache]: Analyzing trace with hash -630994507, now seen corresponding path program 1 times [2023-12-18 22:29:06,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:29:06,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966510272] [2023-12-18 22:29:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:29:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:29:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:29:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:29:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:29:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:29:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:29:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:29:06,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:29:06,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966510272] [2023-12-18 22:29:06,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966510272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:29:06,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:29:06,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:29:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009142971] [2023-12-18 22:29:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:29:06,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:29:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:29:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:29:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:29:06,479 INFO L87 Difference]: Start difference. First operand 45156 states and 74651 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:29:13,155 INFO L93 Difference]: Finished difference Result 175357 states and 291192 transitions. [2023-12-18 22:29:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:29:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:29:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:29:13,738 INFO L225 Difference]: With dead ends: 175357 [2023-12-18 22:29:13,738 INFO L226 Difference]: Without dead ends: 132340 [2023-12-18 22:29:13,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:29:13,913 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 5546 mSDsluCounter, 17397 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 21825 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:29:13,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5564 Valid, 21825 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 4193 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-18 22:29:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132340 states. [2023-12-18 22:29:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132340 to 86917. [2023-12-18 22:29:17,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86917 states, 79969 states have (on average 1.6029711513211369) internal successors, (128188), 80228 states have internal predecessors, (128188), 5148 states have call successors, (5148), 1543 states have call predecessors, (5148), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2023-12-18 22:29:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86917 states to 86917 states and 145299 transitions. [2023-12-18 22:29:17,927 INFO L78 Accepts]: Start accepts. Automaton has 86917 states and 145299 transitions. Word has length 162 [2023-12-18 22:29:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:29:17,927 INFO L495 AbstractCegarLoop]: Abstraction has 86917 states and 145299 transitions. [2023-12-18 22:29:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 86917 states and 145299 transitions. [2023-12-18 22:29:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:29:18,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:29:18,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:29:18,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:29:18,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:29:18,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:29:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1065500105, now seen corresponding path program 1 times [2023-12-18 22:29:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:29:18,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412111163] [2023-12-18 22:29:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:29:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:29:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:29:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:18,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:29:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:29:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:29:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:29:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:29:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:29:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412111163] [2023-12-18 22:29:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412111163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:29:18,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:29:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:29:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719787733] [2023-12-18 22:29:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:29:18,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:29:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:29:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:29:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:29:18,322 INFO L87 Difference]: Start difference. First operand 86917 states and 145299 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:29:27,362 INFO L93 Difference]: Finished difference Result 341084 states and 573934 transitions. [2023-12-18 22:29:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:29:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:29:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:29:28,313 INFO L225 Difference]: With dead ends: 341084 [2023-12-18 22:29:28,313 INFO L226 Difference]: Without dead ends: 256306 [2023-12-18 22:29:28,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:29:28,564 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5809 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5841 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:29:28,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5841 Valid, 21829 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 22:29:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256306 states. [2023-12-18 22:29:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256306 to 171462. [2023-12-18 22:29:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171462 states, 157858 states have (on average 1.5998048879372602) internal successors, (252542), 158373 states have internal predecessors, (252542), 10012 states have call successors, (10012), 3079 states have call predecessors, (10012), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2023-12-18 22:29:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171462 states to 171462 states and 292759 transitions. [2023-12-18 22:29:36,371 INFO L78 Accepts]: Start accepts. Automaton has 171462 states and 292759 transitions. Word has length 162 [2023-12-18 22:29:36,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:29:36,371 INFO L495 AbstractCegarLoop]: Abstraction has 171462 states and 292759 transitions. [2023-12-18 22:29:36,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 171462 states and 292759 transitions. [2023-12-18 22:29:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:29:36,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:29:36,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:29:36,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 22:29:36,436 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:29:36,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:29:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1495158411, now seen corresponding path program 1 times [2023-12-18 22:29:36,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:29:36,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981092848] [2023-12-18 22:29:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:29:36,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:29:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:29:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:29:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:29:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:29:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:29:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:29:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:29:36,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:29:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981092848] [2023-12-18 22:29:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981092848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:29:36,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:29:36,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:29:36,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537488926] [2023-12-18 22:29:36,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:29:36,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:29:36,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:29:36,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:29:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:29:36,657 INFO L87 Difference]: Start difference. First operand 171462 states and 292759 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:29:50,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:29:50,975 INFO L93 Difference]: Finished difference Result 671515 states and 1155380 transitions. [2023-12-18 22:29:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:29:50,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:29:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:29:53,556 INFO L225 Difference]: With dead ends: 671515 [2023-12-18 22:29:53,556 INFO L226 Difference]: Without dead ends: 502192 [2023-12-18 22:29:54,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:29:54,292 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5773 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5805 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:29:54,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5805 Valid, 21829 Invalid, 3561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 22:29:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502192 states. [2023-12-18 22:30:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502192 to 340551. [2023-12-18 22:30:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340551 states, 313891 states have (on average 1.598516682542666) internal successors, (501760), 314918 states have internal predecessors, (501760), 19484 states have call successors, (19484), 6151 states have call predecessors, (19484), 7174 states have return successors, (79555), 20505 states have call predecessors, (79555), 19482 states have call successors, (79555) [2023-12-18 22:30:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340551 states to 340551 states and 600799 transitions. [2023-12-18 22:30:11,549 INFO L78 Accepts]: Start accepts. Automaton has 340551 states and 600799 transitions. Word has length 162 [2023-12-18 22:30:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:30:11,550 INFO L495 AbstractCegarLoop]: Abstraction has 340551 states and 600799 transitions. [2023-12-18 22:30:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:30:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 340551 states and 600799 transitions. [2023-12-18 22:30:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 22:30:11,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:30:11,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:30:11,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 22:30:11,674 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:30:11,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:30:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2093212279, now seen corresponding path program 1 times [2023-12-18 22:30:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:30:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007164728] [2023-12-18 22:30:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:30:11,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:30:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:30:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:30:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:30:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-18 22:30:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:30:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 22:30:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:30:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-18 22:30:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:30:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-18 22:30:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:30:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:30:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:30:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007164728] [2023-12-18 22:30:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007164728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:30:11,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:30:11,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:30:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643989330] [2023-12-18 22:30:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:30:11,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:30:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:30:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:30:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:30:11,846 INFO L87 Difference]: Start difference. First operand 340551 states and 600799 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:30:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:30:39,878 INFO L93 Difference]: Finished difference Result 1324698 states and 2357450 transitions. [2023-12-18 22:30:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:30:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-18 22:30:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:30:46,133 INFO L225 Difference]: With dead ends: 1324698 [2023-12-18 22:30:46,133 INFO L226 Difference]: Without dead ends: 986286 [2023-12-18 22:30:47,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:30:47,758 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5517 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:30:47,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5535 Valid, 21829 Invalid, 4086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 22:30:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986286 states.