/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/systemc/transmitter.05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:47:03,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:47:03,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:47:03,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:47:03,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:47:03,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:47:03,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:47:03,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:47:03,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:47:03,404 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:47:03,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:47:03,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:47:03,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:47:03,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:47:03,406 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:47:03,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:47:03,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:47:03,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:47:03,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:47:03,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:47:03,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:47:03,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:47:03,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:47:03,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:47:03,409 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:47:03,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:47:03,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:47:03,409 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:47:03,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:47:03,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:47:03,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:47:03,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:47:03,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:47:03,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:47:03,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:47:03,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:47:03,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:47:03,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:47:03,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:47:03,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:47:03,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:47:03,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:47:03,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:47:03,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:47:03,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:47:03,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:47:03,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:47:03,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:47:03,664 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:47:03,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.05.cil.c [2023-12-20 00:47:04,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:47:05,064 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:47:05,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c [2023-12-20 00:47:05,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4fa82ad/ad60ed70820b418e8c197caea66c1d74/FLAG58c5c0ded [2023-12-20 00:47:05,091 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4fa82ad/ad60ed70820b418e8c197caea66c1d74 [2023-12-20 00:47:05,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:47:05,093 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:47:05,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:47:05,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:47:05,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:47:05,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc2d979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05, skipping insertion in model container [2023-12-20 00:47:05,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,138 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:47:05,296 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c[706,719] [2023-12-20 00:47:05,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:47:05,386 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:47:05,398 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c[706,719] [2023-12-20 00:47:05,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:47:05,456 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:47:05,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05 WrapperNode [2023-12-20 00:47:05,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:47:05,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:47:05,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:47:05,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:47:05,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,531 INFO L138 Inliner]: procedures = 38, calls = 45, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 446 [2023-12-20 00:47:05,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:47:05,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:47:05,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:47:05,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:47:05,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,577 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]. [2023-12-20 00:47:05,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:47:05,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:47:05,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:47:05,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:47:05,608 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (1/1) ... [2023-12-20 00:47:05,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:47:05,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:47:05,648 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) [2023-12-20 00:47:05,656 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 [2023-12-20 00:47:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:47:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:47:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:47:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:47:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:47:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:47:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:47:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:47:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:47:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:47:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:47:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:47:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:47:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:47:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:47:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:47:05,834 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:47:05,836 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:47:06,327 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:47:06,389 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:47:06,389 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-20 00:47:06,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:47:06 BoogieIcfgContainer [2023-12-20 00:47:06,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:47:06,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:47:06,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:47:06,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:47:06,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:47:05" (1/3) ... [2023-12-20 00:47:06,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fa0249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:47:06, skipping insertion in model container [2023-12-20 00:47:06,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:47:05" (2/3) ... [2023-12-20 00:47:06,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fa0249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:47:06, skipping insertion in model container [2023-12-20 00:47:06,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:47:06" (3/3) ... [2023-12-20 00:47:06,399 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2023-12-20 00:47:06,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:47:06,414 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:47:06,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:47:06,464 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;@23e260fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:47:06,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:47:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 156 states have (on average 1.705128205128205) internal successors, (266), 158 states have internal predecessors, (266), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-20 00:47:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:06,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:06,478 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] [2023-12-20 00:47:06,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:06,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash 388603747, now seen corresponding path program 1 times [2023-12-20 00:47:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333738221] [2023-12-20 00:47:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333738221] [2023-12-20 00:47:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333738221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:47:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537638777] [2023-12-20 00:47:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:06,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:47:06,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:47:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:47:06,985 INFO L87 Difference]: Start difference. First operand has 182 states, 156 states have (on average 1.705128205128205) internal successors, (266), 158 states have internal predecessors, (266), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:07,894 INFO L93 Difference]: Finished difference Result 418 states and 700 transitions. [2023-12-20 00:47:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:47:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:07,912 INFO L225 Difference]: With dead ends: 418 [2023-12-20 00:47:07,912 INFO L226 Difference]: Without dead ends: 238 [2023-12-20 00:47:07,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:47:07,924 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 467 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:07,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 324 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-20 00:47:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 180. [2023-12-20 00:47:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 155 states have (on average 1.5741935483870968) internal successors, (244), 156 states have internal predecessors, (244), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-20 00:47:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 280 transitions. [2023-12-20 00:47:08,009 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 280 transitions. Word has length 92 [2023-12-20 00:47:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:08,009 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 280 transitions. [2023-12-20 00:47:08,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 280 transitions. [2023-12-20 00:47:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:08,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:08,013 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] [2023-12-20 00:47:08,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:47:08,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:08,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 974879969, now seen corresponding path program 1 times [2023-12-20 00:47:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821315445] [2023-12-20 00:47:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:08,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:08,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821315445] [2023-12-20 00:47:08,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821315445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:08,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:08,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:47:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648388780] [2023-12-20 00:47:08,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:08,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:47:08,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:47:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:47:08,258 INFO L87 Difference]: Start difference. First operand 180 states and 280 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:09,482 INFO L93 Difference]: Finished difference Result 638 states and 1024 transitions. [2023-12-20 00:47:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:47:09,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:09,489 INFO L225 Difference]: With dead ends: 638 [2023-12-20 00:47:09,489 INFO L226 Difference]: Without dead ends: 469 [2023-12-20 00:47:09,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:09,493 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 687 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:09,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 538 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:47:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-20 00:47:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 354. [2023-12-20 00:47:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 309 states have (on average 1.5792880258899675) internal successors, (488), 311 states have internal predecessors, (488), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-20 00:47:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 553 transitions. [2023-12-20 00:47:09,546 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 553 transitions. Word has length 92 [2023-12-20 00:47:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:09,546 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 553 transitions. [2023-12-20 00:47:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 553 transitions. [2023-12-20 00:47:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:09,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:09,553 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] [2023-12-20 00:47:09,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:47:09,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:09,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2100169280, now seen corresponding path program 1 times [2023-12-20 00:47:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035247889] [2023-12-20 00:47:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:09,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035247889] [2023-12-20 00:47:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035247889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:09,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:09,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759298181] [2023-12-20 00:47:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:09,763 INFO L87 Difference]: Start difference. First operand 354 states and 553 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:11,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:11,675 INFO L93 Difference]: Finished difference Result 1118 states and 1773 transitions. [2023-12-20 00:47:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:47:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:11,683 INFO L225 Difference]: With dead ends: 1118 [2023-12-20 00:47:11,683 INFO L226 Difference]: Without dead ends: 775 [2023-12-20 00:47:11,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:47:11,685 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 740 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:11,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1019 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:47:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2023-12-20 00:47:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 516. [2023-12-20 00:47:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 451 states have (on average 1.5698447893569845) internal successors, (708), 454 states have internal predecessors, (708), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-20 00:47:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 801 transitions. [2023-12-20 00:47:11,718 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 801 transitions. Word has length 92 [2023-12-20 00:47:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:11,718 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 801 transitions. [2023-12-20 00:47:11,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 801 transitions. [2023-12-20 00:47:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:11,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:11,720 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] [2023-12-20 00:47:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:47:11,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:11,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1261135618, now seen corresponding path program 1 times [2023-12-20 00:47:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420535503] [2023-12-20 00:47:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:11,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:11,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:11,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420535503] [2023-12-20 00:47:11,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420535503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:11,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:11,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:11,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557063095] [2023-12-20 00:47:11,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:11,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:11,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:11,956 INFO L87 Difference]: Start difference. First operand 516 states and 801 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:13,783 INFO L93 Difference]: Finished difference Result 1720 states and 2717 transitions. [2023-12-20 00:47:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:47:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:13,790 INFO L225 Difference]: With dead ends: 1720 [2023-12-20 00:47:13,790 INFO L226 Difference]: Without dead ends: 1215 [2023-12-20 00:47:13,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:47:13,793 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 738 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:13,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1017 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 00:47:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-20 00:47:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 841. [2023-12-20 00:47:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 736 states have (on average 1.5611413043478262) internal successors, (1149), 741 states have internal predecessors, (1149), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 00:47:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1302 transitions. [2023-12-20 00:47:13,849 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1302 transitions. Word has length 92 [2023-12-20 00:47:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:13,849 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1302 transitions. [2023-12-20 00:47:13,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1302 transitions. [2023-12-20 00:47:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:13,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:13,851 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] [2023-12-20 00:47:13,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:47:13,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:13,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1234070016, now seen corresponding path program 1 times [2023-12-20 00:47:13,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862773420] [2023-12-20 00:47:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:13,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:13,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:13,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862773420] [2023-12-20 00:47:13,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862773420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:13,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:13,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937657005] [2023-12-20 00:47:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:13,967 INFO L87 Difference]: Start difference. First operand 841 states and 1302 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:14,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:14,698 INFO L93 Difference]: Finished difference Result 1965 states and 3098 transitions. [2023-12-20 00:47:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:47:14,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:14,704 INFO L225 Difference]: With dead ends: 1965 [2023-12-20 00:47:14,704 INFO L226 Difference]: Without dead ends: 1135 [2023-12-20 00:47:14,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:14,707 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 588 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:14,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 425 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2023-12-20 00:47:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 841. [2023-12-20 00:47:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 736 states have (on average 1.5543478260869565) internal successors, (1144), 741 states have internal predecessors, (1144), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 00:47:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1297 transitions. [2023-12-20 00:47:14,756 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1297 transitions. Word has length 92 [2023-12-20 00:47:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:14,756 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1297 transitions. [2023-12-20 00:47:14,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1297 transitions. [2023-12-20 00:47:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:14,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:14,758 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] [2023-12-20 00:47:14,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:47:14,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:14,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:14,759 INFO L85 PathProgramCache]: Analyzing trace with hash 983560382, now seen corresponding path program 1 times [2023-12-20 00:47:14,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894568197] [2023-12-20 00:47:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894568197] [2023-12-20 00:47:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894568197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:14,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:14,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:14,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787422976] [2023-12-20 00:47:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:14,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:14,885 INFO L87 Difference]: Start difference. First operand 841 states and 1297 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:15,723 INFO L93 Difference]: Finished difference Result 1959 states and 3072 transitions. [2023-12-20 00:47:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:47:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:15,728 INFO L225 Difference]: With dead ends: 1959 [2023-12-20 00:47:15,728 INFO L226 Difference]: Without dead ends: 1129 [2023-12-20 00:47:15,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:15,731 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 516 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:15,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 509 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-12-20 00:47:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 841. [2023-12-20 00:47:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 736 states have (on average 1.547554347826087) internal successors, (1139), 741 states have internal predecessors, (1139), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 00:47:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1292 transitions. [2023-12-20 00:47:15,779 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1292 transitions. Word has length 92 [2023-12-20 00:47:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:15,780 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1292 transitions. [2023-12-20 00:47:15,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1292 transitions. [2023-12-20 00:47:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:15,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:15,782 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] [2023-12-20 00:47:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:47:15,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:15,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1577302464, now seen corresponding path program 1 times [2023-12-20 00:47:15,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:15,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761437542] [2023-12-20 00:47:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:15,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761437542] [2023-12-20 00:47:15,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761437542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:15,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:15,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042089135] [2023-12-20 00:47:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:15,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:15,930 INFO L87 Difference]: Start difference. First operand 841 states and 1292 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:17,836 INFO L93 Difference]: Finished difference Result 3092 states and 4812 transitions. [2023-12-20 00:47:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 00:47:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:17,850 INFO L225 Difference]: With dead ends: 3092 [2023-12-20 00:47:17,850 INFO L226 Difference]: Without dead ends: 2262 [2023-12-20 00:47:17,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:47:17,855 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 762 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:17,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1000 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:47:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-12-20 00:47:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1493. [2023-12-20 00:47:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1312 states have (on average 1.5434451219512195) internal successors, (2025), 1321 states have internal predecessors, (2025), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-20 00:47:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2296 transitions. [2023-12-20 00:47:17,942 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2296 transitions. Word has length 92 [2023-12-20 00:47:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:17,943 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2296 transitions. [2023-12-20 00:47:17,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2296 transitions. [2023-12-20 00:47:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:17,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:17,946 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] [2023-12-20 00:47:17,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:47:17,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:17,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 806622274, now seen corresponding path program 1 times [2023-12-20 00:47:17,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:17,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438586383] [2023-12-20 00:47:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:17,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:18,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438586383] [2023-12-20 00:47:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438586383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:18,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414129886] [2023-12-20 00:47:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:18,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:18,083 INFO L87 Difference]: Start difference. First operand 1493 states and 2296 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:18,797 INFO L93 Difference]: Finished difference Result 3425 states and 5336 transitions. [2023-12-20 00:47:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:47:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:18,806 INFO L225 Difference]: With dead ends: 3425 [2023-12-20 00:47:18,806 INFO L226 Difference]: Without dead ends: 1943 [2023-12-20 00:47:18,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:18,811 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 526 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:18,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 507 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-12-20 00:47:18,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1493. [2023-12-20 00:47:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1312 states have (on average 1.5365853658536586) internal successors, (2016), 1321 states have internal predecessors, (2016), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-20 00:47:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2287 transitions. [2023-12-20 00:47:18,899 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2287 transitions. Word has length 92 [2023-12-20 00:47:18,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:18,901 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2287 transitions. [2023-12-20 00:47:18,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2287 transitions. [2023-12-20 00:47:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:18,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:18,904 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] [2023-12-20 00:47:18,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:47:18,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 883523072, now seen corresponding path program 1 times [2023-12-20 00:47:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813932443] [2023-12-20 00:47:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813932443] [2023-12-20 00:47:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813932443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:19,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:19,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:19,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130907858] [2023-12-20 00:47:19,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:19,065 INFO L87 Difference]: Start difference. First operand 1493 states and 2287 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:21,020 INFO L93 Difference]: Finished difference Result 5404 states and 8358 transitions. [2023-12-20 00:47:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 00:47:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:21,040 INFO L225 Difference]: With dead ends: 5404 [2023-12-20 00:47:21,040 INFO L226 Difference]: Without dead ends: 3922 [2023-12-20 00:47:21,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:47:21,045 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 800 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:21,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1000 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:47:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2023-12-20 00:47:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 2803. [2023-12-20 00:47:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2474 states have (on average 1.5311236863379143) internal successors, (3788), 2491 states have internal predecessors, (3788), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-20 00:47:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4305 transitions. [2023-12-20 00:47:21,245 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4305 transitions. Word has length 92 [2023-12-20 00:47:21,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:21,246 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4305 transitions. [2023-12-20 00:47:21,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4305 transitions. [2023-12-20 00:47:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:21,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:21,250 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] [2023-12-20 00:47:21,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:47:21,250 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:21,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash -83827582, now seen corresponding path program 1 times [2023-12-20 00:47:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342109716] [2023-12-20 00:47:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:21,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:21,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342109716] [2023-12-20 00:47:21,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342109716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:21,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:21,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405491937] [2023-12-20 00:47:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:21,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:21,393 INFO L87 Difference]: Start difference. First operand 2803 states and 4305 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:23,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:23,363 INFO L93 Difference]: Finished difference Result 10032 states and 15542 transitions. [2023-12-20 00:47:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 00:47:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:23,401 INFO L225 Difference]: With dead ends: 10032 [2023-12-20 00:47:23,401 INFO L226 Difference]: Without dead ends: 7240 [2023-12-20 00:47:23,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:47:23,414 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 726 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:23,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1000 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 00:47:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2023-12-20 00:47:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 5420. [2023-12-20 00:47:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 4803 states have (on average 1.5286279408702894) internal successors, (7342), 4836 states have internal predecessors, (7342), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-20 00:47:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 8389 transitions. [2023-12-20 00:47:23,736 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 8389 transitions. Word has length 92 [2023-12-20 00:47:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:23,737 INFO L495 AbstractCegarLoop]: Abstraction has 5420 states and 8389 transitions. [2023-12-20 00:47:23,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 8389 transitions. [2023-12-20 00:47:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:23,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:23,745 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] [2023-12-20 00:47:23,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:47:23,745 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:23,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:23,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1824630208, now seen corresponding path program 1 times [2023-12-20 00:47:23,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495723156] [2023-12-20 00:47:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495723156] [2023-12-20 00:47:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495723156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:23,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970112411] [2023-12-20 00:47:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:23,871 INFO L87 Difference]: Start difference. First operand 5420 states and 8389 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:24,639 INFO L93 Difference]: Finished difference Result 12193 states and 19105 transitions. [2023-12-20 00:47:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:47:24,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:24,683 INFO L225 Difference]: With dead ends: 12193 [2023-12-20 00:47:24,684 INFO L226 Difference]: Without dead ends: 6784 [2023-12-20 00:47:24,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:24,701 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 584 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:24,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 424 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:47:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6784 states. [2023-12-20 00:47:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6784 to 5420. [2023-12-20 00:47:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 4803 states have (on average 1.52175723506142) internal successors, (7309), 4836 states have internal predecessors, (7309), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-20 00:47:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 8356 transitions. [2023-12-20 00:47:25,042 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 8356 transitions. Word has length 92 [2023-12-20 00:47:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:25,042 INFO L495 AbstractCegarLoop]: Abstraction has 5420 states and 8356 transitions. [2023-12-20 00:47:25,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 8356 transitions. [2023-12-20 00:47:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:25,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:25,049 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] [2023-12-20 00:47:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:47:25,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:25,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1332004034, now seen corresponding path program 1 times [2023-12-20 00:47:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515914781] [2023-12-20 00:47:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:25,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:25,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:25,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515914781] [2023-12-20 00:47:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515914781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:25,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:47:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143074721] [2023-12-20 00:47:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:47:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:47:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:47:25,182 INFO L87 Difference]: Start difference. First operand 5420 states and 8356 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:26,261 INFO L93 Difference]: Finished difference Result 11960 states and 18598 transitions. [2023-12-20 00:47:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 00:47:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:26,294 INFO L225 Difference]: With dead ends: 11960 [2023-12-20 00:47:26,295 INFO L226 Difference]: Without dead ends: 6552 [2023-12-20 00:47:26,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-20 00:47:26,313 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 314 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:26,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 578 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6552 states. [2023-12-20 00:47:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6552 to 5422. [2023-12-20 00:47:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 4805 states have (on average 1.5148803329864724) internal successors, (7279), 4838 states have internal predecessors, (7279), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-20 00:47:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 8326 transitions. [2023-12-20 00:47:26,625 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 8326 transitions. Word has length 92 [2023-12-20 00:47:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:26,626 INFO L495 AbstractCegarLoop]: Abstraction has 5422 states and 8326 transitions. [2023-12-20 00:47:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 8326 transitions. [2023-12-20 00:47:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:26,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:26,632 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] [2023-12-20 00:47:26,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:47:26,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:26,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1001388604, now seen corresponding path program 1 times [2023-12-20 00:47:26,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:26,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680959453] [2023-12-20 00:47:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:26,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680959453] [2023-12-20 00:47:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680959453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:26,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:47:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766473136] [2023-12-20 00:47:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:47:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:47:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:47:26,764 INFO L87 Difference]: Start difference. First operand 5422 states and 8326 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:27,740 INFO L93 Difference]: Finished difference Result 12670 states and 19598 transitions. [2023-12-20 00:47:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:47:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:27,772 INFO L225 Difference]: With dead ends: 12670 [2023-12-20 00:47:27,773 INFO L226 Difference]: Without dead ends: 7260 [2023-12-20 00:47:27,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:27,789 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 317 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:27,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 577 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2023-12-20 00:47:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 5488. [2023-12-20 00:47:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4871 states have (on average 1.507903921166085) internal successors, (7345), 4904 states have internal predecessors, (7345), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-20 00:47:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 8392 transitions. [2023-12-20 00:47:28,126 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 8392 transitions. Word has length 92 [2023-12-20 00:47:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:28,126 INFO L495 AbstractCegarLoop]: Abstraction has 5488 states and 8392 transitions. [2023-12-20 00:47:28,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 8392 transitions. [2023-12-20 00:47:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:28,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:28,134 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] [2023-12-20 00:47:28,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:47:28,134 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:28,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash -960713854, now seen corresponding path program 1 times [2023-12-20 00:47:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:28,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289243734] [2023-12-20 00:47:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:28,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289243734] [2023-12-20 00:47:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289243734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:28,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:28,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:28,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951659135] [2023-12-20 00:47:28,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:28,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:28,281 INFO L87 Difference]: Start difference. First operand 5488 states and 8392 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:30,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:30,848 INFO L93 Difference]: Finished difference Result 30515 states and 47792 transitions. [2023-12-20 00:47:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:47:30,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:30,968 INFO L225 Difference]: With dead ends: 30515 [2023-12-20 00:47:30,968 INFO L226 Difference]: Without dead ends: 25039 [2023-12-20 00:47:31,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:47:31,009 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1651 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:31,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 874 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:47:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25039 states. [2023-12-20 00:47:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25039 to 20750. [2023-12-20 00:47:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20750 states, 18430 states have (on average 1.5003255561584374) internal successors, (27651), 18559 states have internal predecessors, (27651), 1399 states have call successors, (1399), 792 states have call predecessors, (1399), 920 states have return successors, (2908), 1430 states have call predecessors, (2908), 1399 states have call successors, (2908) [2023-12-20 00:47:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20750 states to 20750 states and 31958 transitions. [2023-12-20 00:47:32,343 INFO L78 Accepts]: Start accepts. Automaton has 20750 states and 31958 transitions. Word has length 92 [2023-12-20 00:47:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:32,344 INFO L495 AbstractCegarLoop]: Abstraction has 20750 states and 31958 transitions. [2023-12-20 00:47:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20750 states and 31958 transitions. [2023-12-20 00:47:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:32,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:32,352 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] [2023-12-20 00:47:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:47:32,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:32,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -857912607, now seen corresponding path program 1 times [2023-12-20 00:47:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012759625] [2023-12-20 00:47:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012759625] [2023-12-20 00:47:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012759625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:47:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314136386] [2023-12-20 00:47:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:47:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:47:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:47:32,469 INFO L87 Difference]: Start difference. First operand 20750 states and 31958 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:34,199 INFO L93 Difference]: Finished difference Result 46269 states and 72747 transitions. [2023-12-20 00:47:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:47:34,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:34,310 INFO L225 Difference]: With dead ends: 46269 [2023-12-20 00:47:34,310 INFO L226 Difference]: Without dead ends: 25531 [2023-12-20 00:47:34,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:34,376 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 305 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:34,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 577 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25531 states. [2023-12-20 00:47:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25531 to 20882. [2023-12-20 00:47:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20882 states, 18562 states have (on average 1.4932119383687104) internal successors, (27717), 18691 states have internal predecessors, (27717), 1399 states have call successors, (1399), 792 states have call predecessors, (1399), 920 states have return successors, (2908), 1430 states have call predecessors, (2908), 1399 states have call successors, (2908) [2023-12-20 00:47:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20882 states to 20882 states and 32024 transitions. [2023-12-20 00:47:35,393 INFO L78 Accepts]: Start accepts. Automaton has 20882 states and 32024 transitions. Word has length 92 [2023-12-20 00:47:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:35,393 INFO L495 AbstractCegarLoop]: Abstraction has 20882 states and 32024 transitions. [2023-12-20 00:47:35,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 20882 states and 32024 transitions. [2023-12-20 00:47:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:35,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:35,402 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] [2023-12-20 00:47:35,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:47:35,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:35,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1408468579, now seen corresponding path program 1 times [2023-12-20 00:47:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878971600] [2023-12-20 00:47:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:35,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:35,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878971600] [2023-12-20 00:47:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878971600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015220057] [2023-12-20 00:47:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:35,538 INFO L87 Difference]: Start difference. First operand 20882 states and 32024 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:39,113 INFO L93 Difference]: Finished difference Result 68908 states and 106926 transitions. [2023-12-20 00:47:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:47:39,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:39,302 INFO L225 Difference]: With dead ends: 68908 [2023-12-20 00:47:39,303 INFO L226 Difference]: Without dead ends: 48038 [2023-12-20 00:47:39,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:47:39,367 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1830 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:39,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 884 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:47:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48038 states. [2023-12-20 00:47:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48038 to 40722. [2023-12-20 00:47:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40722 states, 36188 states have (on average 1.4894163811208134) internal successors, (53899), 36445 states have internal predecessors, (53899), 2693 states have call successors, (2693), 1584 states have call predecessors, (2693), 1840 states have return successors, (6031), 2724 states have call predecessors, (6031), 2693 states have call successors, (6031) [2023-12-20 00:47:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40722 states to 40722 states and 62623 transitions. [2023-12-20 00:47:41,718 INFO L78 Accepts]: Start accepts. Automaton has 40722 states and 62623 transitions. Word has length 92 [2023-12-20 00:47:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:41,718 INFO L495 AbstractCegarLoop]: Abstraction has 40722 states and 62623 transitions. [2023-12-20 00:47:41,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 40722 states and 62623 transitions. [2023-12-20 00:47:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:41,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:41,727 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] [2023-12-20 00:47:41,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:47:41,727 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:41,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1418295388, now seen corresponding path program 1 times [2023-12-20 00:47:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950517458] [2023-12-20 00:47:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:41,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:41,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950517458] [2023-12-20 00:47:41,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950517458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:41,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:41,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:47:41,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859542033] [2023-12-20 00:47:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:47:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:47:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:47:41,839 INFO L87 Difference]: Start difference. First operand 40722 states and 62623 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:44,524 INFO L93 Difference]: Finished difference Result 89627 states and 141398 transitions. [2023-12-20 00:47:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:47:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:44,703 INFO L225 Difference]: With dead ends: 89627 [2023-12-20 00:47:44,703 INFO L226 Difference]: Without dead ends: 48917 [2023-12-20 00:47:44,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:47:44,785 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 308 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:44,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 577 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:47:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48917 states. [2023-12-20 00:47:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48917 to 40986. [2023-12-20 00:47:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40986 states, 36452 states have (on average 1.4822506309667507) internal successors, (54031), 36709 states have internal predecessors, (54031), 2693 states have call successors, (2693), 1584 states have call predecessors, (2693), 1840 states have return successors, (6031), 2724 states have call predecessors, (6031), 2693 states have call successors, (6031) [2023-12-20 00:47:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40986 states to 40986 states and 62755 transitions. [2023-12-20 00:47:47,071 INFO L78 Accepts]: Start accepts. Automaton has 40986 states and 62755 transitions. Word has length 92 [2023-12-20 00:47:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:47,072 INFO L495 AbstractCegarLoop]: Abstraction has 40986 states and 62755 transitions. [2023-12-20 00:47:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 40986 states and 62755 transitions. [2023-12-20 00:47:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:47:47,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:47,080 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] [2023-12-20 00:47:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:47:47,080 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:47,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash 509977314, now seen corresponding path program 1 times [2023-12-20 00:47:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:47,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648853716] [2023-12-20 00:47:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:47,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:47,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648853716] [2023-12-20 00:47:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648853716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:47,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:47:47,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30879959] [2023-12-20 00:47:47,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:47,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:47:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:47:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:47:47,204 INFO L87 Difference]: Start difference. First operand 40986 states and 62755 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:52,415 INFO L93 Difference]: Finished difference Result 134750 states and 210248 transitions. [2023-12-20 00:47:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:47:52,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-20 00:47:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:47:52,782 INFO L225 Difference]: With dead ends: 134750 [2023-12-20 00:47:52,783 INFO L226 Difference]: Without dead ends: 93776 [2023-12-20 00:47:52,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:47:52,862 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1813 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:47:52,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 909 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:47:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93776 states. [2023-12-20 00:47:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93776 to 61026. [2023-12-20 00:47:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61026 states, 54244 states have (on average 1.4769375414792418) internal successors, (80115), 54629 states have internal predecessors, (80115), 4021 states have call successors, (4021), 2376 states have call predecessors, (4021), 2760 states have return successors, (8335), 4052 states have call predecessors, (8335), 4021 states have call successors, (8335) [2023-12-20 00:47:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61026 states to 61026 states and 92471 transitions. [2023-12-20 00:47:56,442 INFO L78 Accepts]: Start accepts. Automaton has 61026 states and 92471 transitions. Word has length 92 [2023-12-20 00:47:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:47:56,442 INFO L495 AbstractCegarLoop]: Abstraction has 61026 states and 92471 transitions. [2023-12-20 00:47:56,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 61026 states and 92471 transitions. [2023-12-20 00:47:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:47:56,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:47:56,466 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] [2023-12-20 00:47:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 00:47:56,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:47:56,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:47:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash -994187609, now seen corresponding path program 1 times [2023-12-20 00:47:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:47:56,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653629633] [2023-12-20 00:47:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:47:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:47:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:47:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:47:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:47:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:47:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:47:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:47:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:47:56,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:47:56,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653629633] [2023-12-20 00:47:56,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653629633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:47:56,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:47:56,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:47:56,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148277576] [2023-12-20 00:47:56,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:47:56,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:47:56,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:47:56,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:47:56,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:47:56,578 INFO L87 Difference]: Start difference. First operand 61026 states and 92471 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:47:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:47:59,825 INFO L93 Difference]: Finished difference Result 133063 states and 205483 transitions. [2023-12-20 00:47:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:47:59,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:47:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:00,027 INFO L225 Difference]: With dead ends: 133063 [2023-12-20 00:48:00,027 INFO L226 Difference]: Without dead ends: 72049 [2023-12-20 00:48:00,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:48:00,252 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 265 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:00,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 573 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:48:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72049 states. [2023-12-20 00:48:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72049 to 61554. [2023-12-20 00:48:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61554 states, 54772 states have (on average 1.4699298911852772) internal successors, (80511), 55157 states have internal predecessors, (80511), 4021 states have call successors, (4021), 2376 states have call predecessors, (4021), 2760 states have return successors, (8335), 4052 states have call predecessors, (8335), 4021 states have call successors, (8335) [2023-12-20 00:48:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61554 states to 61554 states and 92867 transitions. [2023-12-20 00:48:03,420 INFO L78 Accepts]: Start accepts. Automaton has 61554 states and 92867 transitions. Word has length 97 [2023-12-20 00:48:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:03,420 INFO L495 AbstractCegarLoop]: Abstraction has 61554 states and 92867 transitions. [2023-12-20 00:48:03,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 61554 states and 92867 transitions. [2023-12-20 00:48:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:03,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:03,436 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] [2023-12-20 00:48:03,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 00:48:03,436 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:03,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash -570540887, now seen corresponding path program 1 times [2023-12-20 00:48:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116434932] [2023-12-20 00:48:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:03,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:03,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116434932] [2023-12-20 00:48:03,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116434932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:03,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:03,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:48:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130512741] [2023-12-20 00:48:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:03,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:48:03,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:48:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:48:03,628 INFO L87 Difference]: Start difference. First operand 61554 states and 92867 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:06,537 INFO L93 Difference]: Finished difference Result 84484 states and 126781 transitions. [2023-12-20 00:48:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:48:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:06,681 INFO L225 Difference]: With dead ends: 84484 [2023-12-20 00:48:06,681 INFO L226 Difference]: Without dead ends: 52167 [2023-12-20 00:48:06,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:48:06,732 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1193 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:06,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 670 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:48:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52167 states. [2023-12-20 00:48:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52167 to 33105. [2023-12-20 00:48:08,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33105 states, 29398 states have (on average 1.456527654942513) internal successors, (42819), 29591 states have internal predecessors, (42819), 2218 states have call successors, (2218), 1296 states have call predecessors, (2218), 1488 states have return successors, (3962), 2233 states have call predecessors, (3962), 2218 states have call successors, (3962) [2023-12-20 00:48:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33105 states to 33105 states and 48999 transitions. [2023-12-20 00:48:08,464 INFO L78 Accepts]: Start accepts. Automaton has 33105 states and 48999 transitions. Word has length 97 [2023-12-20 00:48:08,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:08,464 INFO L495 AbstractCegarLoop]: Abstraction has 33105 states and 48999 transitions. [2023-12-20 00:48:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 33105 states and 48999 transitions. [2023-12-20 00:48:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:08,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:08,472 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] [2023-12-20 00:48:08,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 00:48:08,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:08,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash -964907673, now seen corresponding path program 1 times [2023-12-20 00:48:08,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:08,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862472901] [2023-12-20 00:48:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:08,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862472901] [2023-12-20 00:48:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862472901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:08,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:48:08,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624393079] [2023-12-20 00:48:08,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:08,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:48:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:48:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:48:08,629 INFO L87 Difference]: Start difference. First operand 33105 states and 48999 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:11,075 INFO L93 Difference]: Finished difference Result 48071 states and 71325 transitions. [2023-12-20 00:48:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:48:11,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:11,143 INFO L225 Difference]: With dead ends: 48071 [2023-12-20 00:48:11,143 INFO L226 Difference]: Without dead ends: 29363 [2023-12-20 00:48:11,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:48:11,170 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1174 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:11,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 670 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:48:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29363 states. [2023-12-20 00:48:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29363 to 18265. [2023-12-20 00:48:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18265 states, 16198 states have (on average 1.4512285467341648) internal successors, (23507), 16295 states have internal predecessors, (23507), 1250 states have call successors, (1250), 720 states have call predecessors, (1250), 816 states have return successors, (2014), 1257 states have call predecessors, (2014), 1250 states have call successors, (2014) [2023-12-20 00:48:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18265 states to 18265 states and 26771 transitions. [2023-12-20 00:48:12,113 INFO L78 Accepts]: Start accepts. Automaton has 18265 states and 26771 transitions. Word has length 97 [2023-12-20 00:48:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:12,113 INFO L495 AbstractCegarLoop]: Abstraction has 18265 states and 26771 transitions. [2023-12-20 00:48:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 18265 states and 26771 transitions. [2023-12-20 00:48:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:12,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:12,118 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] [2023-12-20 00:48:12,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 00:48:12,118 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:12,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:12,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1808913175, now seen corresponding path program 1 times [2023-12-20 00:48:12,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:12,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677093705] [2023-12-20 00:48:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:12,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:12,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677093705] [2023-12-20 00:48:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677093705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:48:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050505229] [2023-12-20 00:48:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:48:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:48:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:48:12,248 INFO L87 Difference]: Start difference. First operand 18265 states and 26771 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:13,646 INFO L93 Difference]: Finished difference Result 39985 states and 59170 transitions. [2023-12-20 00:48:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:48:13,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:13,700 INFO L225 Difference]: With dead ends: 39985 [2023-12-20 00:48:13,701 INFO L226 Difference]: Without dead ends: 21733 [2023-12-20 00:48:13,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-20 00:48:13,732 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 593 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:13,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 508 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:48:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21733 states. [2023-12-20 00:48:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21733 to 18181. [2023-12-20 00:48:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18181 states, 16114 states have (on average 1.4386868561499317) internal successors, (23183), 16211 states have internal predecessors, (23183), 1250 states have call successors, (1250), 720 states have call predecessors, (1250), 816 states have return successors, (2014), 1257 states have call predecessors, (2014), 1250 states have call successors, (2014) [2023-12-20 00:48:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18181 states to 18181 states and 26447 transitions. [2023-12-20 00:48:14,738 INFO L78 Accepts]: Start accepts. Automaton has 18181 states and 26447 transitions. Word has length 97 [2023-12-20 00:48:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:14,738 INFO L495 AbstractCegarLoop]: Abstraction has 18181 states and 26447 transitions. [2023-12-20 00:48:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 18181 states and 26447 transitions. [2023-12-20 00:48:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:14,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:14,742 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] [2023-12-20 00:48:14,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 00:48:14,742 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:14,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash 242070823, now seen corresponding path program 1 times [2023-12-20 00:48:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971919881] [2023-12-20 00:48:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971919881] [2023-12-20 00:48:14,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971919881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:14,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:14,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:48:14,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904677037] [2023-12-20 00:48:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:14,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:48:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:48:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:48:14,872 INFO L87 Difference]: Start difference. First operand 18181 states and 26447 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:16,133 INFO L93 Difference]: Finished difference Result 39805 states and 58474 transitions. [2023-12-20 00:48:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:48:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:16,189 INFO L225 Difference]: With dead ends: 39805 [2023-12-20 00:48:16,189 INFO L226 Difference]: Without dead ends: 21637 [2023-12-20 00:48:16,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-20 00:48:16,216 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 702 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:16,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 420 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 00:48:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21637 states. [2023-12-20 00:48:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21637 to 18097. [2023-12-20 00:48:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18097 states, 16030 states have (on average 1.4260137242669995) internal successors, (22859), 16127 states have internal predecessors, (22859), 1250 states have call successors, (1250), 720 states have call predecessors, (1250), 816 states have return successors, (2014), 1257 states have call predecessors, (2014), 1250 states have call successors, (2014) [2023-12-20 00:48:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18097 states to 18097 states and 26123 transitions. [2023-12-20 00:48:17,094 INFO L78 Accepts]: Start accepts. Automaton has 18097 states and 26123 transitions. Word has length 97 [2023-12-20 00:48:17,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:17,095 INFO L495 AbstractCegarLoop]: Abstraction has 18097 states and 26123 transitions. [2023-12-20 00:48:17,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 18097 states and 26123 transitions. [2023-12-20 00:48:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:17,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:17,098 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] [2023-12-20 00:48:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 00:48:17,099 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:17,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash 169684265, now seen corresponding path program 1 times [2023-12-20 00:48:17,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:17,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328890359] [2023-12-20 00:48:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:17,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:17,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328890359] [2023-12-20 00:48:17,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328890359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:17,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:17,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:48:17,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217230000] [2023-12-20 00:48:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:17,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:48:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:48:17,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:48:17,236 INFO L87 Difference]: Start difference. First operand 18097 states and 26123 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:18,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:18,932 INFO L93 Difference]: Finished difference Result 49221 states and 71202 transitions. [2023-12-20 00:48:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 00:48:18,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:18,999 INFO L225 Difference]: With dead ends: 49221 [2023-12-20 00:48:19,000 INFO L226 Difference]: Without dead ends: 31137 [2023-12-20 00:48:19,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:48:19,022 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 989 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:19,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 429 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:48:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31137 states. [2023-12-20 00:48:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31137 to 25329. [2023-12-20 00:48:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25329 states, 22648 states have (on average 1.3899240551042034) internal successors, (31479), 22877 states have internal predecessors, (31479), 1492 states have call successors, (1492), 960 states have call predecessors, (1492), 1188 states have return successors, (3166), 1499 states have call predecessors, (3166), 1492 states have call successors, (3166) [2023-12-20 00:48:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25329 states to 25329 states and 36137 transitions. [2023-12-20 00:48:20,146 INFO L78 Accepts]: Start accepts. Automaton has 25329 states and 36137 transitions. Word has length 97 [2023-12-20 00:48:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:20,146 INFO L495 AbstractCegarLoop]: Abstraction has 25329 states and 36137 transitions. [2023-12-20 00:48:20,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 25329 states and 36137 transitions. [2023-12-20 00:48:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:20,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:20,150 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] [2023-12-20 00:48:20,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 00:48:20,150 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:20,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 444443879, now seen corresponding path program 1 times [2023-12-20 00:48:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:20,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776933396] [2023-12-20 00:48:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:20,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:20,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:20,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776933396] [2023-12-20 00:48:20,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776933396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:20,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:48:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264138356] [2023-12-20 00:48:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:20,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:48:20,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:48:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:48:20,323 INFO L87 Difference]: Start difference. First operand 25329 states and 36137 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:23,184 INFO L93 Difference]: Finished difference Result 66617 states and 94948 transitions. [2023-12-20 00:48:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 00:48:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:23,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:23,265 INFO L225 Difference]: With dead ends: 66617 [2023-12-20 00:48:23,265 INFO L226 Difference]: Without dead ends: 46879 [2023-12-20 00:48:23,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-12-20 00:48:23,287 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1052 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:23,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 753 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:48:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46879 states. [2023-12-20 00:48:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46879 to 25305. [2023-12-20 00:48:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25305 states, 22636 states have (on average 1.384122636508217) internal successors, (31331), 22853 states have internal predecessors, (31331), 1492 states have call successors, (1492), 960 states have call predecessors, (1492), 1176 states have return successors, (2806), 1495 states have call predecessors, (2806), 1492 states have call successors, (2806) [2023-12-20 00:48:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25305 states to 25305 states and 35629 transitions. [2023-12-20 00:48:24,577 INFO L78 Accepts]: Start accepts. Automaton has 25305 states and 35629 transitions. Word has length 97 [2023-12-20 00:48:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:24,577 INFO L495 AbstractCegarLoop]: Abstraction has 25305 states and 35629 transitions. [2023-12-20 00:48:24,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 25305 states and 35629 transitions. [2023-12-20 00:48:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:24,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:24,579 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] [2023-12-20 00:48:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 00:48:24,580 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:24,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1146043753, now seen corresponding path program 1 times [2023-12-20 00:48:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432974257] [2023-12-20 00:48:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:24,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432974257] [2023-12-20 00:48:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432974257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:48:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856460740] [2023-12-20 00:48:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:48:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:48:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:48:24,739 INFO L87 Difference]: Start difference. First operand 25305 states and 35629 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:27,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:27,204 INFO L93 Difference]: Finished difference Result 63925 states and 91153 transitions. [2023-12-20 00:48:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 00:48:27,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:27,305 INFO L225 Difference]: With dead ends: 63925 [2023-12-20 00:48:27,305 INFO L226 Difference]: Without dead ends: 41699 [2023-12-20 00:48:27,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-12-20 00:48:27,351 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1097 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:27,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 678 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:48:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41699 states. [2023-12-20 00:48:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41699 to 23097. [2023-12-20 00:48:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23097 states, 20792 states have (on average 1.3689399769141977) internal successors, (28463), 20961 states have internal predecessors, (28463), 1304 states have call successors, (1304), 832 states have call predecessors, (1304), 1000 states have return successors, (2276), 1305 states have call predecessors, (2276), 1304 states have call successors, (2276) [2023-12-20 00:48:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23097 states to 23097 states and 32043 transitions. [2023-12-20 00:48:28,696 INFO L78 Accepts]: Start accepts. Automaton has 23097 states and 32043 transitions. Word has length 97 [2023-12-20 00:48:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:28,696 INFO L495 AbstractCegarLoop]: Abstraction has 23097 states and 32043 transitions. [2023-12-20 00:48:28,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 23097 states and 32043 transitions. [2023-12-20 00:48:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:28,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:28,698 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] [2023-12-20 00:48:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 00:48:28,698 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:28,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1762720149, now seen corresponding path program 1 times [2023-12-20 00:48:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:28,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104105946] [2023-12-20 00:48:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:28,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:28,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104105946] [2023-12-20 00:48:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104105946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:28,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:48:28,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426571117] [2023-12-20 00:48:28,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:28,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:48:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:48:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:48:28,838 INFO L87 Difference]: Start difference. First operand 23097 states and 32043 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:31,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:31,513 INFO L93 Difference]: Finished difference Result 61279 states and 86959 transitions. [2023-12-20 00:48:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 00:48:31,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:31,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:31,617 INFO L225 Difference]: With dead ends: 61279 [2023-12-20 00:48:31,617 INFO L226 Difference]: Without dead ends: 38135 [2023-12-20 00:48:31,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-12-20 00:48:31,657 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1182 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:31,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 685 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:48:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38135 states. [2023-12-20 00:48:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38135 to 21851. [2023-12-20 00:48:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21851 states, 19836 states have (on average 1.3527424884049204) internal successors, (26833), 19953 states have internal predecessors, (26833), 1162 states have call successors, (1162), 736 states have call predecessors, (1162), 852 states have return successors, (1907), 1162 states have call predecessors, (1907), 1162 states have call successors, (1907) [2023-12-20 00:48:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21851 states to 21851 states and 29902 transitions. [2023-12-20 00:48:33,030 INFO L78 Accepts]: Start accepts. Automaton has 21851 states and 29902 transitions. Word has length 97 [2023-12-20 00:48:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:33,031 INFO L495 AbstractCegarLoop]: Abstraction has 21851 states and 29902 transitions. [2023-12-20 00:48:33,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 21851 states and 29902 transitions. [2023-12-20 00:48:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:33,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:33,037 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] [2023-12-20 00:48:33,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 00:48:33,037 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:33,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2022774057, now seen corresponding path program 1 times [2023-12-20 00:48:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:33,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637191166] [2023-12-20 00:48:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:33,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637191166] [2023-12-20 00:48:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637191166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:33,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:33,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:48:33,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403105596] [2023-12-20 00:48:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:33,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:48:33,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:48:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:48:33,163 INFO L87 Difference]: Start difference. First operand 21851 states and 29902 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:35,039 INFO L93 Difference]: Finished difference Result 57051 states and 79359 transitions. [2023-12-20 00:48:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:48:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:35,126 INFO L225 Difference]: With dead ends: 57051 [2023-12-20 00:48:35,126 INFO L226 Difference]: Without dead ends: 35215 [2023-12-20 00:48:35,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:48:35,161 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 740 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:35,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 504 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:48:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35215 states. [2023-12-20 00:48:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35215 to 26767. [2023-12-20 00:48:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26767 states, 24499 states have (on average 1.3140536348422385) internal successors, (32193), 24616 states have internal predecessors, (32193), 1238 states have call successors, (1238), 904 states have call predecessors, (1238), 1029 states have return successors, (2366), 1247 states have call predecessors, (2366), 1238 states have call successors, (2366) [2023-12-20 00:48:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26767 states to 26767 states and 35797 transitions. [2023-12-20 00:48:36,381 INFO L78 Accepts]: Start accepts. Automaton has 26767 states and 35797 transitions. Word has length 97 [2023-12-20 00:48:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:36,381 INFO L495 AbstractCegarLoop]: Abstraction has 26767 states and 35797 transitions. [2023-12-20 00:48:36,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 26767 states and 35797 transitions. [2023-12-20 00:48:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:48:36,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:36,382 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] [2023-12-20 00:48:36,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 00:48:36,382 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:36,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash -348965205, now seen corresponding path program 1 times [2023-12-20 00:48:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614231960] [2023-12-20 00:48:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:36,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614231960] [2023-12-20 00:48:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614231960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:48:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784781165] [2023-12-20 00:48:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:48:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:48:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:48:36,483 INFO L87 Difference]: Start difference. First operand 26767 states and 35797 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:38,739 INFO L93 Difference]: Finished difference Result 94912 states and 128221 transitions. [2023-12-20 00:48:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:48:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2023-12-20 00:48:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:38,942 INFO L225 Difference]: With dead ends: 94912 [2023-12-20 00:48:38,942 INFO L226 Difference]: Without dead ends: 68160 [2023-12-20 00:48:39,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-20 00:48:39,010 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 892 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:39,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 495 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:48:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68160 states. [2023-12-20 00:48:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68160 to 53590. [2023-12-20 00:48:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53590 states, 49093 states have (on average 1.3002464709836432) internal successors, (63833), 49362 states have internal predecessors, (63833), 2390 states have call successors, (2390), 1786 states have call predecessors, (2390), 2106 states have return successors, (5046), 2442 states have call predecessors, (5046), 2390 states have call successors, (5046) [2023-12-20 00:48:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53590 states to 53590 states and 71269 transitions. [2023-12-20 00:48:41,730 INFO L78 Accepts]: Start accepts. Automaton has 53590 states and 71269 transitions. Word has length 97 [2023-12-20 00:48:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:41,731 INFO L495 AbstractCegarLoop]: Abstraction has 53590 states and 71269 transitions. [2023-12-20 00:48:41,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 53590 states and 71269 transitions. [2023-12-20 00:48:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 00:48:41,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:41,732 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] [2023-12-20 00:48:41,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 00:48:41,732 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:41,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1138347175, now seen corresponding path program 1 times [2023-12-20 00:48:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:41,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427582812] [2023-12-20 00:48:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:41,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:41,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:41,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427582812] [2023-12-20 00:48:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427582812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:48:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950575007] [2023-12-20 00:48:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:48:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:48:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:48:41,827 INFO L87 Difference]: Start difference. First operand 53590 states and 71269 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:48:46,158 INFO L93 Difference]: Finished difference Result 191648 states and 258344 transitions. [2023-12-20 00:48:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:48:46,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 99 [2023-12-20 00:48:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:48:46,622 INFO L225 Difference]: With dead ends: 191648 [2023-12-20 00:48:46,622 INFO L226 Difference]: Without dead ends: 138073 [2023-12-20 00:48:46,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-20 00:48:46,693 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 938 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:48:46,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 532 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:48:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138073 states. [2023-12-20 00:48:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138073 to 114677. [2023-12-20 00:48:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114677 states, 105254 states have (on average 1.2931385030497653) internal successors, (136108), 106122 states have internal predecessors, (136108), 4691 states have call successors, (4691), 3548 states have call predecessors, (4691), 4731 states have return successors, (12075), 5008 states have call predecessors, (12075), 4691 states have call successors, (12075) [2023-12-20 00:48:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114677 states to 114677 states and 152874 transitions. [2023-12-20 00:48:52,348 INFO L78 Accepts]: Start accepts. Automaton has 114677 states and 152874 transitions. Word has length 99 [2023-12-20 00:48:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:48:52,348 INFO L495 AbstractCegarLoop]: Abstraction has 114677 states and 152874 transitions. [2023-12-20 00:48:52,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:48:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 114677 states and 152874 transitions. [2023-12-20 00:48:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 00:48:52,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:48:52,350 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] [2023-12-20 00:48:52,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 00:48:52,350 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:48:52,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:48:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1166847465, now seen corresponding path program 1 times [2023-12-20 00:48:52,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:48:52,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123020053] [2023-12-20 00:48:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:48:52,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:48:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:48:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 00:48:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 00:48:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 00:48:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:48:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:48:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:48:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:48:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123020053] [2023-12-20 00:48:52,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123020053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:48:52,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:48:52,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:48:52,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465853397] [2023-12-20 00:48:52,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:48:52,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:48:52,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:48:52,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:48:52,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:48:52,415 INFO L87 Difference]: Start difference. First operand 114677 states and 152874 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)