/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:26:35,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:26:35,944 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 11:26:35,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:26:35,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:26:35,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:26:35,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:26:35,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:26:35,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:26:35,976 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:26:35,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:26:35,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:26:35,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:26:35,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:26:35,978 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:26:35,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:26:35,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:26:35,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:26:35,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:26:35,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:26:35,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:26:35,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:26:35,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:26:35,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:26:35,979 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:26:35,980 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:26:35,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:26:35,980 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:26:35,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:26:35,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:26:35,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:26:35,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:26:35,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:26:35,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:26:35,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:26:35,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:26:35,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:26:35,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:26:36,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:26:36,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:26:36,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:26:36,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:26:36,200 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:26:36,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c [2023-12-20 11:26:37,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:26:37,803 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:26:37,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c [2023-12-20 11:26:37,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4775563d4/937a434d5d13429b8f64eef142815ad7/FLAGc5b1f4682 [2023-12-20 11:26:37,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4775563d4/937a434d5d13429b8f64eef142815ad7 [2023-12-20 11:26:37,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:26:37,867 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:26:37,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:26:37,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:26:37,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:26:37,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:26:37" (1/1) ... [2023-12-20 11:26:37,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5318c1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:37, skipping insertion in model container [2023-12-20 11:26:37,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:26:37" (1/1) ... [2023-12-20 11:26:38,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:26:39,330 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c[381679,381692] [2023-12-20 11:26:39,353 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c[383339,383352] [2023-12-20 11:26:39,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:26:39,652 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:26:40,238 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c[381679,381692] [2023-12-20 11:26:40,241 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-1.c[383339,383352] [2023-12-20 11:26:40,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:26:40,316 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:26:40,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40 WrapperNode [2023-12-20 11:26:40,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:26:40,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:26:40,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:26:40,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:26:40,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:40,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:40,780 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13299 [2023-12-20 11:26:40,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:26:40,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:26:40,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:26:40,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:26:40,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:40,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:40,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:40,921 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 11:26:40,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:40,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:41,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:41,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:41,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:41,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:41,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:26:41,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:26:41,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:26:41,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:26:41,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (1/1) ... [2023-12-20 11:26:41,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:26:41,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:26:41,294 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 11:26:41,313 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 11:26:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:26:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:26:41,318 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:26:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:26:41,318 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:26:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:26:41,318 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:26:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:26:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:26:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:26:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:26:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:26:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:26:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:26:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:26:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:26:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:26:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:26:41,421 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:26:41,423 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:26:47,202 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:26:47,308 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:26:47,308 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-20 11:26:47,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:26:47 BoogieIcfgContainer [2023-12-20 11:26:47,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:26:47,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:26:47,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:26:47,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:26:47,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:26:37" (1/3) ... [2023-12-20 11:26:47,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8b9bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:26:47, skipping insertion in model container [2023-12-20 11:26:47,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:40" (2/3) ... [2023-12-20 11:26:47,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8b9bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:26:47, skipping insertion in model container [2023-12-20 11:26:47,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:26:47" (3/3) ... [2023-12-20 11:26:47,316 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.13.cil-1.c [2023-12-20 11:26:47,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:26:47,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:26:47,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:26:47,396 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;@522f0a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:26:47,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:26:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 2502 states, 2463 states have (on average 1.8749492488834754) internal successors, (4618), 2468 states have internal predecessors, (4618), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-20 11:26:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:26:47,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:47,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:47,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:47,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash -445430764, now seen corresponding path program 1 times [2023-12-20 11:26:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847244749] [2023-12-20 11:26:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:26:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:26:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:26:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:26:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:47,946 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 11:26:47,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847244749] [2023-12-20 11:26:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847244749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:47,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:47,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:26:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663598802] [2023-12-20 11:26:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:47,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:26:47,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:26:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:26:47,988 INFO L87 Difference]: Start difference. First operand has 2502 states, 2463 states have (on average 1.8749492488834754) internal successors, (4618), 2468 states have internal predecessors, (4618), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:49,985 INFO L93 Difference]: Finished difference Result 5137 states and 9590 transitions. [2023-12-20 11:26:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:26:49,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:26:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:50,005 INFO L225 Difference]: With dead ends: 5137 [2023-12-20 11:26:50,005 INFO L226 Difference]: Without dead ends: 2637 [2023-12-20 11:26:50,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:26:50,015 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 1062 mSDsluCounter, 12244 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 16531 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:50,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 16531 Invalid, 1211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:26:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2023-12-20 11:26:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2497. [2023-12-20 11:26:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2460 states have (on average 1.8357723577235772) internal successors, (4516), 2463 states have internal predecessors, (4516), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 11:26:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 4572 transitions. [2023-12-20 11:26:50,104 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 4572 transitions. Word has length 172 [2023-12-20 11:26:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:50,104 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 4572 transitions. [2023-12-20 11:26:50,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 4572 transitions. [2023-12-20 11:26:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:26:50,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:50,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:26:50,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:50,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash -943987566, now seen corresponding path program 1 times [2023-12-20 11:26:50,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:50,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022904465] [2023-12-20 11:26:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:50,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:26:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:26:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:26:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:26:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:50,287 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 11:26:50,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022904465] [2023-12-20 11:26:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022904465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:26:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747171894] [2023-12-20 11:26:50,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:50,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:26:50,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:50,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:26:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:26:50,290 INFO L87 Difference]: Start difference. First operand 2497 states and 4572 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:52,090 INFO L93 Difference]: Finished difference Result 2998 states and 5410 transitions. [2023-12-20 11:26:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:26:52,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:26:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:52,104 INFO L225 Difference]: With dead ends: 2998 [2023-12-20 11:26:52,105 INFO L226 Difference]: Without dead ends: 2637 [2023-12-20 11:26:52,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:26:52,108 INFO L413 NwaCegarLoop]: 4283 mSDtfsCounter, 1050 mSDsluCounter, 12235 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 16518 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:52,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 16518 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:26:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2023-12-20 11:26:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2497. [2023-12-20 11:26:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2460 states have (on average 1.8353658536585367) internal successors, (4515), 2463 states have internal predecessors, (4515), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 11:26:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 4571 transitions. [2023-12-20 11:26:52,186 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 4571 transitions. Word has length 172 [2023-12-20 11:26:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:52,188 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 4571 transitions. [2023-12-20 11:26:52,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 4571 transitions. [2023-12-20 11:26:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:26:52,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:52,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:26:52,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:52,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 825484048, now seen corresponding path program 1 times [2023-12-20 11:26:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:52,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174942435] [2023-12-20 11:26:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:26:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:26:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:26:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:26:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,695 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 11:26:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174942435] [2023-12-20 11:26:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174942435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:26:52,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029962238] [2023-12-20 11:26:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:52,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:26:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:26:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:26:52,700 INFO L87 Difference]: Start difference. First operand 2497 states and 4571 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:55,233 INFO L93 Difference]: Finished difference Result 3512 states and 6275 transitions. [2023-12-20 11:26:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:26:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:26:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:55,246 INFO L225 Difference]: With dead ends: 3512 [2023-12-20 11:26:55,246 INFO L226 Difference]: Without dead ends: 3155 [2023-12-20 11:26:55,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:26:55,253 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 5558 mSDsluCounter, 12746 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5578 SdHoareTripleChecker+Valid, 16995 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:55,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5578 Valid, 16995 Invalid, 2591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 11:26:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2023-12-20 11:26:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 2874. [2023-12-20 11:26:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2808 states have (on average 1.8133903133903133) internal successors, (5092), 2812 states have internal predecessors, (5092), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-20 11:26:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5195 transitions. [2023-12-20 11:26:55,328 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5195 transitions. Word has length 172 [2023-12-20 11:26:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 5195 transitions. [2023-12-20 11:26:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5195 transitions. [2023-12-20 11:26:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:26:55,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:55,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:55,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:26:55,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:55,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1830589324, now seen corresponding path program 1 times [2023-12-20 11:26:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:55,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149875057] [2023-12-20 11:26:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:26:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:26:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:55,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:26:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:26:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:55,738 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 11:26:55,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149875057] [2023-12-20 11:26:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149875057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:55,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:55,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736315337] [2023-12-20 11:26:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:55,740 INFO L87 Difference]: Start difference. First operand 2874 states and 5195 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:00,095 INFO L93 Difference]: Finished difference Result 4427 states and 7805 transitions. [2023-12-20 11:27:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:00,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:00,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:00,113 INFO L225 Difference]: With dead ends: 4427 [2023-12-20 11:27:00,114 INFO L226 Difference]: Without dead ends: 3693 [2023-12-20 11:27:00,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:00,118 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5605 mSDsluCounter, 17546 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5625 SdHoareTripleChecker+Valid, 22017 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:00,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5625 Valid, 22017 Invalid, 4079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 11:27:00,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2023-12-20 11:27:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3222. [2023-12-20 11:27:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3127 states have (on average 1.7943716021746083) internal successors, (5611), 3132 states have internal predecessors, (5611), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-20 11:27:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5760 transitions. [2023-12-20 11:27:00,237 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 5760 transitions. Word has length 172 [2023-12-20 11:27:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:00,237 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 5760 transitions. [2023-12-20 11:27:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 5760 transitions. [2023-12-20 11:27:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:00,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:00,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:00,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:27:00,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:00,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2078515570, now seen corresponding path program 1 times [2023-12-20 11:27:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:00,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180790444] [2023-12-20 11:27:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:00,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:00,515 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 11:27:00,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180790444] [2023-12-20 11:27:00,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180790444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:00,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:00,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767450474] [2023-12-20 11:27:00,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:00,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:00,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:00,517 INFO L87 Difference]: Start difference. First operand 3222 states and 5760 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:02,509 INFO L93 Difference]: Finished difference Result 4793 states and 8414 transitions. [2023-12-20 11:27:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:02,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:02,522 INFO L225 Difference]: With dead ends: 4793 [2023-12-20 11:27:02,523 INFO L226 Difference]: Without dead ends: 3711 [2023-12-20 11:27:02,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:02,527 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5129 mSDsluCounter, 16691 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 20927 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:02,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 20927 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:27:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2023-12-20 11:27:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3222. [2023-12-20 11:27:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3127 states have (on average 1.7934122161816437) internal successors, (5608), 3132 states have internal predecessors, (5608), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-20 11:27:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5757 transitions. [2023-12-20 11:27:02,615 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 5757 transitions. Word has length 172 [2023-12-20 11:27:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:02,615 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 5757 transitions. [2023-12-20 11:27:02,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 5757 transitions. [2023-12-20 11:27:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:02,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:02,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:02,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:27:02,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:02,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash -147389936, now seen corresponding path program 1 times [2023-12-20 11:27:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372927869] [2023-12-20 11:27:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:02,863 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 11:27:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372927869] [2023-12-20 11:27:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372927869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:02,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417365330] [2023-12-20 11:27:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:02,866 INFO L87 Difference]: Start difference. First operand 3222 states and 5757 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:04,880 INFO L93 Difference]: Finished difference Result 4789 states and 8397 transitions. [2023-12-20 11:27:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:04,891 INFO L225 Difference]: With dead ends: 4789 [2023-12-20 11:27:04,891 INFO L226 Difference]: Without dead ends: 3707 [2023-12-20 11:27:04,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:04,900 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5127 mSDsluCounter, 16691 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 20927 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:04,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5148 Valid, 20927 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:27:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2023-12-20 11:27:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3222. [2023-12-20 11:27:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3127 states have (on average 1.7924528301886793) internal successors, (5605), 3132 states have internal predecessors, (5605), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-20 11:27:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5754 transitions. [2023-12-20 11:27:04,988 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 5754 transitions. Word has length 172 [2023-12-20 11:27:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:04,988 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 5754 transitions. [2023-12-20 11:27:04,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 5754 transitions. [2023-12-20 11:27:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:04,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:04,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:04,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:27:04,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:04,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1470568882, now seen corresponding path program 1 times [2023-12-20 11:27:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:04,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332687407] [2023-12-20 11:27:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,216 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 11:27:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332687407] [2023-12-20 11:27:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332687407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:05,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061285038] [2023-12-20 11:27:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:05,218 INFO L87 Difference]: Start difference. First operand 3222 states and 5754 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:07,189 INFO L93 Difference]: Finished difference Result 4785 states and 8380 transitions. [2023-12-20 11:27:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:07,207 INFO L225 Difference]: With dead ends: 4785 [2023-12-20 11:27:07,208 INFO L226 Difference]: Without dead ends: 3703 [2023-12-20 11:27:07,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:07,212 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5125 mSDsluCounter, 16691 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5146 SdHoareTripleChecker+Valid, 20927 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:07,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5146 Valid, 20927 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:27:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2023-12-20 11:27:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3222. [2023-12-20 11:27:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3127 states have (on average 1.7914934441957147) internal successors, (5602), 3132 states have internal predecessors, (5602), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-20 11:27:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5751 transitions. [2023-12-20 11:27:07,286 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 5751 transitions. Word has length 172 [2023-12-20 11:27:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:07,287 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 5751 transitions. [2023-12-20 11:27:07,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 5751 transitions. [2023-12-20 11:27:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:07,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:07,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:07,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:27:07,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:07,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash 426410576, now seen corresponding path program 1 times [2023-12-20 11:27:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:07,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305001782] [2023-12-20 11:27:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:07,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:07,552 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 11:27:07,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305001782] [2023-12-20 11:27:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305001782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:07,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:07,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:07,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042544791] [2023-12-20 11:27:07,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:07,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:07,554 INFO L87 Difference]: Start difference. First operand 3222 states and 5751 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:10,691 INFO L93 Difference]: Finished difference Result 5755 states and 9966 transitions. [2023-12-20 11:27:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:10,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:10,704 INFO L225 Difference]: With dead ends: 5755 [2023-12-20 11:27:10,705 INFO L226 Difference]: Without dead ends: 4673 [2023-12-20 11:27:10,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:10,711 INFO L413 NwaCegarLoop]: 4258 mSDtfsCounter, 5690 mSDsluCounter, 16967 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5710 SdHoareTripleChecker+Valid, 21225 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:10,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5710 Valid, 21225 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 11:27:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2023-12-20 11:27:10,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 3931. [2023-12-20 11:27:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3778 states have (on average 1.7609846479618847) internal successors, (6653), 3785 states have internal predecessors, (6653), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-20 11:27:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 6898 transitions. [2023-12-20 11:27:10,816 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 6898 transitions. Word has length 172 [2023-12-20 11:27:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:10,818 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 6898 transitions. [2023-12-20 11:27:10,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 6898 transitions. [2023-12-20 11:27:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:10,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:10,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:27:10,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:10,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash 764698126, now seen corresponding path program 1 times [2023-12-20 11:27:10,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:10,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374978766] [2023-12-20 11:27:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:10,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,102 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 11:27:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374978766] [2023-12-20 11:27:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374978766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790945900] [2023-12-20 11:27:11,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:11,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:11,103 INFO L87 Difference]: Start difference. First operand 3931 states and 6898 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:12,776 INFO L93 Difference]: Finished difference Result 6449 states and 11099 transitions. [2023-12-20 11:27:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:12,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:12,806 INFO L225 Difference]: With dead ends: 6449 [2023-12-20 11:27:12,806 INFO L226 Difference]: Without dead ends: 4658 [2023-12-20 11:27:12,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:12,821 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5124 mSDsluCounter, 16691 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 20927 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5145 Valid, 20927 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 11:27:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2023-12-20 11:27:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3931. [2023-12-20 11:27:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3778 states have (on average 1.7596611964002118) internal successors, (6648), 3785 states have internal predecessors, (6648), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-20 11:27:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 6893 transitions. [2023-12-20 11:27:12,961 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 6893 transitions. Word has length 172 [2023-12-20 11:27:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:12,961 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 6893 transitions. [2023-12-20 11:27:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 6893 transitions. [2023-12-20 11:27:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:12,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:12,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:12,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:27:12,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:12,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1191252624, now seen corresponding path program 1 times [2023-12-20 11:27:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009603345] [2023-12-20 11:27:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,170 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 11:27:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009603345] [2023-12-20 11:27:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009603345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:13,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:13,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13180204] [2023-12-20 11:27:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:13,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:13,171 INFO L87 Difference]: Start difference. First operand 3931 states and 6893 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:17,012 INFO L93 Difference]: Finished difference Result 8326 states and 14153 transitions. [2023-12-20 11:27:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:17,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:17,031 INFO L225 Difference]: With dead ends: 8326 [2023-12-20 11:27:17,031 INFO L226 Difference]: Without dead ends: 6535 [2023-12-20 11:27:17,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:17,038 INFO L413 NwaCegarLoop]: 4469 mSDtfsCounter, 5570 mSDsluCounter, 17546 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5590 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:17,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5590 Valid, 22015 Invalid, 3947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:27:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2023-12-20 11:27:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 5349. [2023-12-20 11:27:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5349 states, 5080 states have (on average 1.720472440944882) internal successors, (8740), 5091 states have internal predecessors, (8740), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-20 11:27:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5349 states to 5349 states and 9183 transitions. [2023-12-20 11:27:17,177 INFO L78 Accepts]: Start accepts. Automaton has 5349 states and 9183 transitions. Word has length 172 [2023-12-20 11:27:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:17,177 INFO L495 AbstractCegarLoop]: Abstraction has 5349 states and 9183 transitions. [2023-12-20 11:27:17,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5349 states and 9183 transitions. [2023-12-20 11:27:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:17,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:17,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:17,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:27:17,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:17,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash 650823118, now seen corresponding path program 1 times [2023-12-20 11:27:17,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:17,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058827930] [2023-12-20 11:27:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:17,394 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 11:27:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:17,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058827930] [2023-12-20 11:27:17,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058827930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:17,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:17,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:17,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849395548] [2023-12-20 11:27:17,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:17,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:17,396 INFO L87 Difference]: Start difference. First operand 5349 states and 9183 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:20,861 INFO L93 Difference]: Finished difference Result 13474 states and 22581 transitions. [2023-12-20 11:27:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:20,888 INFO L225 Difference]: With dead ends: 13474 [2023-12-20 11:27:20,888 INFO L226 Difference]: Without dead ends: 10265 [2023-12-20 11:27:20,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:20,900 INFO L413 NwaCegarLoop]: 4469 mSDtfsCounter, 5575 mSDsluCounter, 17546 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5595 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:20,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5595 Valid, 22015 Invalid, 3929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3860 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 11:27:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10265 states. [2023-12-20 11:27:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10265 to 8190. [2023-12-20 11:27:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 7689 states have (on average 1.6816230979321107) internal successors, (12930), 7708 states have internal predecessors, (12930), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-20 11:27:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 13787 transitions. [2023-12-20 11:27:21,143 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 13787 transitions. Word has length 172 [2023-12-20 11:27:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:21,143 INFO L495 AbstractCegarLoop]: Abstraction has 8190 states and 13787 transitions. [2023-12-20 11:27:21,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 13787 transitions. [2023-12-20 11:27:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:21,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:21,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:21,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:27:21,149 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:21,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 494842576, now seen corresponding path program 1 times [2023-12-20 11:27:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731643085] [2023-12-20 11:27:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:21,340 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 11:27:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731643085] [2023-12-20 11:27:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731643085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:21,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35056543] [2023-12-20 11:27:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:21,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:21,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:21,341 INFO L87 Difference]: Start difference. First operand 8190 states and 13787 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:23,135 INFO L93 Difference]: Finished difference Result 16387 states and 27400 transitions. [2023-12-20 11:27:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:23,159 INFO L225 Difference]: With dead ends: 16387 [2023-12-20 11:27:23,159 INFO L226 Difference]: Without dead ends: 10337 [2023-12-20 11:27:23,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:23,176 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5292 mSDsluCounter, 12552 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5313 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:23,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5313 Valid, 16788 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:27:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2023-12-20 11:27:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 8190. [2023-12-20 11:27:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 7689 states have (on average 1.6794121472233061) internal successors, (12913), 7708 states have internal predecessors, (12913), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-20 11:27:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 13770 transitions. [2023-12-20 11:27:23,419 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 13770 transitions. Word has length 172 [2023-12-20 11:27:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 8190 states and 13770 transitions. [2023-12-20 11:27:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 13770 transitions. [2023-12-20 11:27:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:23,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:23,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:23,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:27:23,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:23,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1293027246, now seen corresponding path program 1 times [2023-12-20 11:27:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377629358] [2023-12-20 11:27:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,625 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 11:27:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377629358] [2023-12-20 11:27:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377629358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671331190] [2023-12-20 11:27:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:23,627 INFO L87 Difference]: Start difference. First operand 8190 states and 13770 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:25,449 INFO L93 Difference]: Finished difference Result 16369 states and 27313 transitions. [2023-12-20 11:27:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:25,476 INFO L225 Difference]: With dead ends: 16369 [2023-12-20 11:27:25,476 INFO L226 Difference]: Without dead ends: 10319 [2023-12-20 11:27:25,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:25,491 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5290 mSDsluCounter, 12552 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5311 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:25,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5311 Valid, 16788 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:27:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2023-12-20 11:27:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 8190. [2023-12-20 11:27:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 7689 states have (on average 1.6772011965145013) internal successors, (12896), 7708 states have internal predecessors, (12896), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-20 11:27:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 13753 transitions. [2023-12-20 11:27:25,721 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 13753 transitions. Word has length 172 [2023-12-20 11:27:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:25,722 INFO L495 AbstractCegarLoop]: Abstraction has 8190 states and 13753 transitions. [2023-12-20 11:27:25,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 13753 transitions. [2023-12-20 11:27:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:25,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:25,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:25,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:27:25,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:25,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 866056848, now seen corresponding path program 1 times [2023-12-20 11:27:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053772644] [2023-12-20 11:27:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:25,932 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 11:27:25,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:25,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053772644] [2023-12-20 11:27:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053772644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533980033] [2023-12-20 11:27:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:25,933 INFO L87 Difference]: Start difference. First operand 8190 states and 13753 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:30,010 INFO L93 Difference]: Finished difference Result 23715 states and 39219 transitions. [2023-12-20 11:27:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:30,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:30,053 INFO L225 Difference]: With dead ends: 23715 [2023-12-20 11:27:30,054 INFO L226 Difference]: Without dead ends: 17665 [2023-12-20 11:27:30,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:30,076 INFO L413 NwaCegarLoop]: 4469 mSDtfsCounter, 5556 mSDsluCounter, 17546 mSDsCounter, 0 mSdLazyCounter, 3783 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5576 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:30,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5576 Valid, 22015 Invalid, 3852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3783 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:27:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17665 states. [2023-12-20 11:27:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17665 to 13938. [2023-12-20 11:27:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13938 states, 12973 states have (on average 1.6446465736529716) internal successors, (21336), 13008 states have internal predecessors, (21336), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-12-20 11:27:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13938 states to 13938 states and 23075 transitions. [2023-12-20 11:27:30,524 INFO L78 Accepts]: Start accepts. Automaton has 13938 states and 23075 transitions. Word has length 172 [2023-12-20 11:27:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:30,524 INFO L495 AbstractCegarLoop]: Abstraction has 13938 states and 23075 transitions. [2023-12-20 11:27:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13938 states and 23075 transitions. [2023-12-20 11:27:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:30,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:30,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:27:30,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:30,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash 935704722, now seen corresponding path program 1 times [2023-12-20 11:27:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571265474] [2023-12-20 11:27:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,727 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 11:27:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571265474] [2023-12-20 11:27:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571265474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:30,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:30,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:30,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860880500] [2023-12-20 11:27:30,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:30,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:30,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:30,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:30,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:30,729 INFO L87 Difference]: Start difference. First operand 13938 states and 23075 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:35,207 INFO L93 Difference]: Finished difference Result 49557 states and 81601 transitions. [2023-12-20 11:27:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:35,298 INFO L225 Difference]: With dead ends: 49557 [2023-12-20 11:27:35,298 INFO L226 Difference]: Without dead ends: 37759 [2023-12-20 11:27:35,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:35,326 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 6122 mSDsluCounter, 16965 mSDsCounter, 0 mSdLazyCounter, 3169 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 21225 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:35,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6156 Valid, 21225 Invalid, 3283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 3169 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:27:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37759 states. [2023-12-20 11:27:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37759 to 25395. [2023-12-20 11:27:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25395 states, 23534 states have (on average 1.6239483300756352) internal successors, (38218), 23601 states have internal predecessors, (38218), 1405 states have call successors, (1405), 391 states have call predecessors, (1405), 454 states have return successors, (2196), 1466 states have call predecessors, (2196), 1403 states have call successors, (2196) [2023-12-20 11:27:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25395 states to 25395 states and 41819 transitions. [2023-12-20 11:27:36,380 INFO L78 Accepts]: Start accepts. Automaton has 25395 states and 41819 transitions. Word has length 172 [2023-12-20 11:27:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:36,380 INFO L495 AbstractCegarLoop]: Abstraction has 25395 states and 41819 transitions. [2023-12-20 11:27:36,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 25395 states and 41819 transitions. [2023-12-20 11:27:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:36,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:36,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:36,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:27:36,392 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:36,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1353593424, now seen corresponding path program 1 times [2023-12-20 11:27:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:36,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642335485] [2023-12-20 11:27:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:36,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:36,583 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 11:27:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:36,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642335485] [2023-12-20 11:27:36,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642335485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:36,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:36,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:36,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855885911] [2023-12-20 11:27:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:36,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:36,585 INFO L87 Difference]: Start difference. First operand 25395 states and 41819 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:42,188 INFO L93 Difference]: Finished difference Result 95092 states and 156967 transitions. [2023-12-20 11:27:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:42,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:42,392 INFO L225 Difference]: With dead ends: 95092 [2023-12-20 11:27:42,392 INFO L226 Difference]: Without dead ends: 71837 [2023-12-20 11:27:42,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:42,458 INFO L413 NwaCegarLoop]: 4466 mSDtfsCounter, 5663 mSDsluCounter, 17538 mSDsCounter, 0 mSdLazyCounter, 4479 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 22004 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:42,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5682 Valid, 22004 Invalid, 4550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 4479 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 11:27:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71837 states. [2023-12-20 11:27:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71837 to 47668. [2023-12-20 11:27:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47668 states, 44047 states have (on average 1.609462619474652) internal successors, (70892), 44178 states have internal predecessors, (70892), 2717 states have call successors, (2717), 775 states have call predecessors, (2717), 902 states have return successors, (5030), 2842 states have call predecessors, (5030), 2715 states have call successors, (5030) [2023-12-20 11:27:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47668 states to 47668 states and 78639 transitions. [2023-12-20 11:27:44,970 INFO L78 Accepts]: Start accepts. Automaton has 47668 states and 78639 transitions. Word has length 172 [2023-12-20 11:27:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:44,970 INFO L495 AbstractCegarLoop]: Abstraction has 47668 states and 78639 transitions. [2023-12-20 11:27:44,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 47668 states and 78639 transitions. [2023-12-20 11:27:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:44,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:44,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:44,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 11:27:44,991 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:44,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1542420270, now seen corresponding path program 1 times [2023-12-20 11:27:44,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622855106] [2023-12-20 11:27:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:44,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:45,202 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 11:27:45,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:45,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622855106] [2023-12-20 11:27:45,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622855106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:45,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:45,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:45,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132454968] [2023-12-20 11:27:45,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:45,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:45,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:45,204 INFO L87 Difference]: Start difference. First operand 47668 states and 78639 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:52,178 INFO L93 Difference]: Finished difference Result 183347 states and 304525 transitions. [2023-12-20 11:27:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:27:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:52,916 INFO L225 Difference]: With dead ends: 183347 [2023-12-20 11:27:52,917 INFO L226 Difference]: Without dead ends: 137819 [2023-12-20 11:27:53,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:53,021 INFO L413 NwaCegarLoop]: 4467 mSDtfsCounter, 5952 mSDsluCounter, 17541 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5986 SdHoareTripleChecker+Valid, 22008 SdHoareTripleChecker+Invalid, 3806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:53,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5986 Valid, 22008 Invalid, 3806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:27:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137819 states. [2023-12-20 11:27:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137819 to 92853. [2023-12-20 11:27:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92853 states, 85776 states have (on average 1.6032223465771311) internal successors, (137518), 86035 states have internal predecessors, (137518), 5277 states have call successors, (5277), 1543 states have call predecessors, (5277), 1798 states have return successors, (12092), 5530 states have call predecessors, (12092), 5275 states have call successors, (12092) [2023-12-20 11:27:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92853 states to 92853 states and 154887 transitions. [2023-12-20 11:27:58,012 INFO L78 Accepts]: Start accepts. Automaton has 92853 states and 154887 transitions. Word has length 172 [2023-12-20 11:27:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:58,012 INFO L495 AbstractCegarLoop]: Abstraction has 92853 states and 154887 transitions. [2023-12-20 11:27:58,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 92853 states and 154887 transitions. [2023-12-20 11:27:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:27:58,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:58,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 11:27:58,048 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:58,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1135106576, now seen corresponding path program 1 times [2023-12-20 11:27:58,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:58,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839951604] [2023-12-20 11:27:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:27:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:27:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:27:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:27:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:58,419 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 11:27:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839951604] [2023-12-20 11:27:58,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839951604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:58,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:58,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:58,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943046439] [2023-12-20 11:27:58,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:58,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:58,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:58,420 INFO L87 Difference]: Start difference. First operand 92853 states and 154887 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:28:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:28:09,688 INFO L93 Difference]: Finished difference Result 359730 states and 605475 transitions. [2023-12-20 11:28:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:28:09,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:28:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:28:10,692 INFO L225 Difference]: With dead ends: 359730 [2023-12-20 11:28:10,693 INFO L226 Difference]: Without dead ends: 269017 [2023-12-20 11:28:11,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:28:11,025 INFO L413 NwaCegarLoop]: 4467 mSDtfsCounter, 5922 mSDsluCounter, 17541 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5956 SdHoareTripleChecker+Valid, 22008 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:28:11,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5956 Valid, 22008 Invalid, 3788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 11:28:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269017 states. [2023-12-20 11:28:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269017 to 183222. [2023-12-20 11:28:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183222 states, 169361 states have (on average 1.6002739709850555) internal successors, (271024), 169876 states have internal predecessors, (271024), 10269 states have call successors, (10269), 3079 states have call predecessors, (10269), 3590 states have return successors, (30462), 10778 states have call predecessors, (30462), 10267 states have call successors, (30462) [2023-12-20 11:28:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183222 states to 183222 states and 311755 transitions. [2023-12-20 11:28:20,400 INFO L78 Accepts]: Start accepts. Automaton has 183222 states and 311755 transitions. Word has length 172 [2023-12-20 11:28:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:28:20,400 INFO L495 AbstractCegarLoop]: Abstraction has 183222 states and 311755 transitions. [2023-12-20 11:28:20,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:28:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 183222 states and 311755 transitions. [2023-12-20 11:28:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:28:20,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:28:20,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:28:20,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 11:28:20,462 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:28:20,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:28:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1498573074, now seen corresponding path program 1 times [2023-12-20 11:28:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:28:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496030961] [2023-12-20 11:28:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:28:20,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:28:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:28:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:28:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:28:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:28:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:28:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:20,650 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 11:28:20,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:28:20,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496030961] [2023-12-20 11:28:20,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496030961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:28:20,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:28:20,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:28:20,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85259639] [2023-12-20 11:28:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:28:20,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:28:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:28:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:28:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:28:20,652 INFO L87 Difference]: Start difference. First operand 183222 states and 311755 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:28:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:28:38,589 INFO L93 Difference]: Finished difference Result 701999 states and 1207973 transitions. [2023-12-20 11:28:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:28:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 11:28:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:28:41,449 INFO L225 Difference]: With dead ends: 701999 [2023-12-20 11:28:41,450 INFO L226 Difference]: Without dead ends: 520917 [2023-12-20 11:28:42,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:28:42,140 INFO L413 NwaCegarLoop]: 4467 mSDtfsCounter, 5847 mSDsluCounter, 17541 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5881 SdHoareTripleChecker+Valid, 22008 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:28:42,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5881 Valid, 22008 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 11:28:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520917 states. [2023-12-20 11:28:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520917 to 364472. [2023-12-20 11:29:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364472 states, 337299 states have (on average 1.5996845528744525) internal successors, (539572), 338326 states have internal predecessors, (539572), 19997 states have call successors, (19997), 6151 states have call predecessors, (19997), 7174 states have return successors, (80068), 21018 states have call predecessors, (80068), 19995 states have call successors, (80068) [2023-12-20 11:29:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364472 states to 364472 states and 639637 transitions. [2023-12-20 11:29:02,735 INFO L78 Accepts]: Start accepts. Automaton has 364472 states and 639637 transitions. Word has length 172 [2023-12-20 11:29:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:29:02,736 INFO L495 AbstractCegarLoop]: Abstraction has 364472 states and 639637 transitions. [2023-12-20 11:29:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:29:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 364472 states and 639637 transitions. [2023-12-20 11:29:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 11:29:03,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:29:03,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:29:03,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 11:29:03,121 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:29:03,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:29:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash 953700500, now seen corresponding path program 1 times [2023-12-20 11:29:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:29:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376981253] [2023-12-20 11:29:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:29:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:29:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:29:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:29:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:29:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 11:29:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:29:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 11:29:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:29:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 11:29:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:29:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 11:29:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:29:03,464 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 11:29:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:29:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376981253] [2023-12-20 11:29:03,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376981253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:29:03,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:29:03,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:29:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919186392] [2023-12-20 11:29:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:29:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:29:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:29:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:29:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:29:03,466 INFO L87 Difference]: Start difference. First operand 364472 states and 639637 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)