/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:43:20,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:43:20,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:43:20,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:43:20,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:43:20,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:43:20,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:43:20,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:43:20,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:43:20,667 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:43:20,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:43:20,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:43:20,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:43:20,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:43:20,668 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:43:20,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:43:20,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:43:20,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:43:20,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:43:20,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:43:20,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:43:20,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:43:20,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:43:20,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:43:20,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:43:20,670 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:43:20,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:43:20,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:43:20,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:43:20,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:43:20,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:43:20,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:43:20,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:43:20,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:43:20,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:43:20,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:43:20,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:43:20,673 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:43:20,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:43:20,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:43:20,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:43:20,828 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:43:20,829 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:43:20,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c [2023-12-15 17:43:21,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:43:22,291 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:43:22,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c [2023-12-15 17:43:22,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836945bff/160d09b914714d3783d71fba843ac110/FLAG956de1892 [2023-12-15 17:43:22,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836945bff/160d09b914714d3783d71fba843ac110 [2023-12-15 17:43:22,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:43:22,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:43:22,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:43:22,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:43:22,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:43:22,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:43:22" (1/1) ... [2023-12-15 17:43:22,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4162c059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:22, skipping insertion in model container [2023-12-15 17:43:22,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:43:22" (1/1) ... [2023-12-15 17:43:22,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:43:23,660 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_label49+token_ring.11.cil-1.c[380593,380606] [2023-12-15 17:43:23,679 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_label49+token_ring.11.cil-1.c[383339,383352] [2023-12-15 17:43:23,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:43:23,913 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:43:24,447 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_label49+token_ring.11.cil-1.c[380593,380606] [2023-12-15 17:43:24,452 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_label49+token_ring.11.cil-1.c[383339,383352] [2023-12-15 17:43:24,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:43:24,508 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:43:24,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24 WrapperNode [2023-12-15 17:43:24,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:43:24,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:43:24,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:43:24,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:43:24,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:24,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:24,793 INFO L138 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13179 [2023-12-15 17:43:24,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:43:24,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:43:24,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:43:24,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:43:24,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:24,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:24,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:24,937 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]. [2023-12-15 17:43:24,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:24,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:25,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:25,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:25,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:25,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:25,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:43:25,309 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:43:25,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:43:25,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:43:25,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (1/1) ... [2023-12-15 17:43:25,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:43:25,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:43:25,332 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) [2023-12-15 17:43:25,340 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 [2023-12-15 17:43:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:43:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:43:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:43:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:43:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:43:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:43:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:43:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 17:43:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 17:43:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:43:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:43:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:43:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:43:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:43:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:43:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:43:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:43:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:43:25,549 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:43:25,550 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:43:30,978 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:43:31,061 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:43:31,061 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-15 17:43:31,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:43:31 BoogieIcfgContainer [2023-12-15 17:43:31,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:43:31,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:43:31,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:43:31,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:43:31,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:43:22" (1/3) ... [2023-12-15 17:43:31,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7bb180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:43:31, skipping insertion in model container [2023-12-15 17:43:31,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:43:24" (2/3) ... [2023-12-15 17:43:31,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7bb180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:43:31, skipping insertion in model container [2023-12-15 17:43:31,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:43:31" (3/3) ... [2023-12-15 17:43:31,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.11.cil-1.c [2023-12-15 17:43:31,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:43:31,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:43:31,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:43:31,156 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;@7bd49dea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:43:31,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:43:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 2456 states, 2419 states have (on average 1.8768085985944605) internal successors, (4540), 2424 states have internal predecessors, (4540), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 17:43:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:31,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:31,178 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] [2023-12-15 17:43:31,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:31,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:31,182 INFO L85 PathProgramCache]: Analyzing trace with hash 190505612, now seen corresponding path program 1 times [2023-12-15 17:43:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249321306] [2023-12-15 17:43:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:31,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249321306] [2023-12-15 17:43:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249321306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:31,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:31,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:43:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196089321] [2023-12-15 17:43:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:31,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:43:31,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:43:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:43:31,673 INFO L87 Difference]: Start difference. First operand has 2456 states, 2419 states have (on average 1.8768085985944605) internal successors, (4540), 2424 states have internal predecessors, (4540), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-12-15 17:43:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:33,216 INFO L93 Difference]: Finished difference Result 5021 states and 9382 transitions. [2023-12-15 17:43:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:43:33,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:33,240 INFO L225 Difference]: With dead ends: 5021 [2023-12-15 17:43:33,240 INFO L226 Difference]: Without dead ends: 2571 [2023-12-15 17:43:33,248 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 [2023-12-15 17:43:33,253 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 916 mSDsluCounter, 12200 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 16449 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:33,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 16449 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:43:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2023-12-15 17:43:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2451. [2023-12-15 17:43:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2416 states have (on average 1.8385761589403973) internal successors, (4442), 2419 states have internal predecessors, (4442), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-15 17:43:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4494 transitions. [2023-12-15 17:43:33,378 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4494 transitions. Word has length 152 [2023-12-15 17:43:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:33,379 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 4494 transitions. [2023-12-15 17:43:33,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-12-15 17:43:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4494 transitions. [2023-12-15 17:43:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:33,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:33,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:43:33,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:43:33,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:33,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1978375434, now seen corresponding path program 1 times [2023-12-15 17:43:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:33,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877366600] [2023-12-15 17:43:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877366600] [2023-12-15 17:43:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877366600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:43:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974804932] [2023-12-15 17:43:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:43:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:43:33,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:43:33,612 INFO L87 Difference]: Start difference. First operand 2451 states and 4494 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-12-15 17:43:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:36,005 INFO L93 Difference]: Finished difference Result 3334 states and 5970 transitions. [2023-12-15 17:43:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:43:36,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:36,015 INFO L225 Difference]: With dead ends: 3334 [2023-12-15 17:43:36,015 INFO L226 Difference]: Without dead ends: 3021 [2023-12-15 17:43:36,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:43:36,017 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 5341 mSDsluCounter, 12642 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5359 SdHoareTripleChecker+Valid, 16858 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:36,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5359 Valid, 16858 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 17:43:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-12-15 17:43:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2780. [2023-12-15 17:43:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2718 states have (on average 1.8178807947019868) internal successors, (4941), 2722 states have internal predecessors, (4941), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-15 17:43:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 5036 transitions. [2023-12-15 17:43:36,069 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 5036 transitions. Word has length 152 [2023-12-15 17:43:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:36,070 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 5036 transitions. [2023-12-15 17:43:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-12-15 17:43:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 5036 transitions. [2023-12-15 17:43:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:36,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:36,072 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] [2023-12-15 17:43:36,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:43:36,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:36,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1779625978, now seen corresponding path program 1 times [2023-12-15 17:43:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923070528] [2023-12-15 17:43:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:36,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:36,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:36,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923070528] [2023-12-15 17:43:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923070528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:36,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:36,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650414845] [2023-12-15 17:43:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:36,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:36,365 INFO L87 Difference]: Start difference. First operand 2780 states and 5036 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:39,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:39,387 INFO L93 Difference]: Finished difference Result 4129 states and 7292 transitions. [2023-12-15 17:43:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:43:39,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:39,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:39,401 INFO L225 Difference]: With dead ends: 4129 [2023-12-15 17:43:39,402 INFO L226 Difference]: Without dead ends: 3487 [2023-12-15 17:43:39,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:43:39,406 INFO L413 NwaCegarLoop]: 4412 mSDtfsCounter, 5370 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5388 SdHoareTripleChecker+Valid, 21751 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:39,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5388 Valid, 21751 Invalid, 3539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 17:43:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2023-12-15 17:43:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3084. [2023-12-15 17:43:39,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 2995 states have (on average 1.7996661101836393) internal successors, (5390), 3000 states have internal predecessors, (5390), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-15 17:43:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 5527 transitions. [2023-12-15 17:43:39,495 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 5527 transitions. Word has length 152 [2023-12-15 17:43:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:39,495 INFO L495 AbstractCegarLoop]: Abstraction has 3084 states and 5527 transitions. [2023-12-15 17:43:39,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 5527 transitions. [2023-12-15 17:43:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:39,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:39,498 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] [2023-12-15 17:43:39,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:43:39,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:39,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1970468744, now seen corresponding path program 1 times [2023-12-15 17:43:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:39,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895348637] [2023-12-15 17:43:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:39,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895348637] [2023-12-15 17:43:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895348637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137537288] [2023-12-15 17:43:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:39,777 INFO L87 Difference]: Start difference. First operand 3084 states and 5527 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:42,770 INFO L93 Difference]: Finished difference Result 5294 states and 9217 transitions. [2023-12-15 17:43:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:43:42,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:42,786 INFO L225 Difference]: With dead ends: 5294 [2023-12-15 17:43:42,786 INFO L226 Difference]: Without dead ends: 4348 [2023-12-15 17:43:42,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:43:42,790 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5368 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3472 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5386 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:42,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5386 Valid, 21749 Invalid, 3537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3472 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 17:43:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2023-12-15 17:43:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 3693. [2023-12-15 17:43:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.771549295774648) internal successors, (6289), 3557 states have internal predecessors, (6289), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:43:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6514 transitions. [2023-12-15 17:43:42,891 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6514 transitions. Word has length 152 [2023-12-15 17:43:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:42,891 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6514 transitions. [2023-12-15 17:43:42,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6514 transitions. [2023-12-15 17:43:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:42,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:42,893 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] [2023-12-15 17:43:42,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:43:42,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:42,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:42,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1649338426, now seen corresponding path program 1 times [2023-12-15 17:43:42,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:42,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151518118] [2023-12-15 17:43:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:42,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:43,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151518118] [2023-12-15 17:43:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151518118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:43,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:43,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072013162] [2023-12-15 17:43:43,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:43,147 INFO L87 Difference]: Start difference. First operand 3693 states and 6514 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:44,666 INFO L93 Difference]: Finished difference Result 5891 states and 10195 transitions. [2023-12-15 17:43:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:43:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:44,679 INFO L225 Difference]: With dead ends: 5891 [2023-12-15 17:43:44,679 INFO L226 Difference]: Without dead ends: 4336 [2023-12-15 17:43:44,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:43:44,684 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4971 mSDsluCounter, 16586 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:44,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4990 Valid, 20789 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:43:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2023-12-15 17:43:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3693. [2023-12-15 17:43:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7701408450704226) internal successors, (6284), 3557 states have internal predecessors, (6284), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:43:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6509 transitions. [2023-12-15 17:43:44,761 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6509 transitions. Word has length 152 [2023-12-15 17:43:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:44,762 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6509 transitions. [2023-12-15 17:43:44,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6509 transitions. [2023-12-15 17:43:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:44,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:44,764 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] [2023-12-15 17:43:44,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:43:44,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:44,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1697576904, now seen corresponding path program 1 times [2023-12-15 17:43:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413483227] [2023-12-15 17:43:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:44,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413483227] [2023-12-15 17:43:44,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413483227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:44,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279809857] [2023-12-15 17:43:44,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:44,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:44,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:44,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:44,941 INFO L87 Difference]: Start difference. First operand 3693 states and 6509 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:46,509 INFO L93 Difference]: Finished difference Result 5885 states and 10169 transitions. [2023-12-15 17:43:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:43:46,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:46,523 INFO L225 Difference]: With dead ends: 5885 [2023-12-15 17:43:46,523 INFO L226 Difference]: Without dead ends: 4330 [2023-12-15 17:43:46,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:43:46,531 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4969 mSDsluCounter, 16586 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:46,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4988 Valid, 20789 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:43:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2023-12-15 17:43:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 3693. [2023-12-15 17:43:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7687323943661972) internal successors, (6279), 3557 states have internal predecessors, (6279), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:43:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6504 transitions. [2023-12-15 17:43:46,636 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6504 transitions. Word has length 152 [2023-12-15 17:43:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:46,637 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6504 transitions. [2023-12-15 17:43:46,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6504 transitions. [2023-12-15 17:43:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:46,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:46,640 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] [2023-12-15 17:43:46,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:43:46,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:46,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:46,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1112805254, now seen corresponding path program 1 times [2023-12-15 17:43:46,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:46,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712439602] [2023-12-15 17:43:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:46,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712439602] [2023-12-15 17:43:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712439602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:46,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:46,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:46,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397046909] [2023-12-15 17:43:46,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:46,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:46,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:46,848 INFO L87 Difference]: Start difference. First operand 3693 states and 6504 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:48,286 INFO L93 Difference]: Finished difference Result 5878 states and 10141 transitions. [2023-12-15 17:43:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:43:48,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:48,298 INFO L225 Difference]: With dead ends: 5878 [2023-12-15 17:43:48,298 INFO L226 Difference]: Without dead ends: 4323 [2023-12-15 17:43:48,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:43:48,303 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4972 mSDsluCounter, 16586 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:48,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4991 Valid, 20789 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:43:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2023-12-15 17:43:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3693. [2023-12-15 17:43:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7673239436619719) internal successors, (6274), 3557 states have internal predecessors, (6274), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:43:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6499 transitions. [2023-12-15 17:43:48,374 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6499 transitions. Word has length 152 [2023-12-15 17:43:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:48,374 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6499 transitions. [2023-12-15 17:43:48,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6499 transitions. [2023-12-15 17:43:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:48,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:48,376 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] [2023-12-15 17:43:48,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:43:48,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:48,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash 678299656, now seen corresponding path program 1 times [2023-12-15 17:43:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:48,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798424097] [2023-12-15 17:43:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:48,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:48,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:48,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:48,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798424097] [2023-12-15 17:43:48,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798424097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:48,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:48,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:48,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344973343] [2023-12-15 17:43:48,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:48,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:48,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:48,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:48,540 INFO L87 Difference]: Start difference. First operand 3693 states and 6499 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:49,907 INFO L93 Difference]: Finished difference Result 5866 states and 10103 transitions. [2023-12-15 17:43:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:43:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:49,917 INFO L225 Difference]: With dead ends: 5866 [2023-12-15 17:43:49,917 INFO L226 Difference]: Without dead ends: 4311 [2023-12-15 17:43:49,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:43:49,922 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 5111 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 16671 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:49,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5130 Valid, 16671 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:43:49,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2023-12-15 17:43:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3693. [2023-12-15 17:43:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7659154929577465) internal successors, (6269), 3557 states have internal predecessors, (6269), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:43:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6494 transitions. [2023-12-15 17:43:49,995 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6494 transitions. Word has length 152 [2023-12-15 17:43:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:49,995 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6494 transitions. [2023-12-15 17:43:49,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6494 transitions. [2023-12-15 17:43:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:49,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:49,997 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] [2023-12-15 17:43:49,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:43:49,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:49,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash -28296950, now seen corresponding path program 1 times [2023-12-15 17:43:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328599936] [2023-12-15 17:43:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:49,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:50,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328599936] [2023-12-15 17:43:50,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328599936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:50,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151760690] [2023-12-15 17:43:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:50,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:50,183 INFO L87 Difference]: Start difference. First operand 3693 states and 6494 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:53,228 INFO L93 Difference]: Finished difference Result 7494 states and 12734 transitions. [2023-12-15 17:43:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:43:53,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:53,239 INFO L225 Difference]: With dead ends: 7494 [2023-12-15 17:43:53,239 INFO L226 Difference]: Without dead ends: 5939 [2023-12-15 17:43:53,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:43:53,243 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5339 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5357 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:53,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5357 Valid, 21749 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 17:43:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2023-12-15 17:43:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 4934. [2023-12-15 17:43:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4683 states have (on average 1.7258167841127483) internal successors, (8082), 4694 states have internal predecessors, (8082), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-15 17:43:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 8489 transitions. [2023-12-15 17:43:53,353 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 8489 transitions. Word has length 152 [2023-12-15 17:43:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:53,353 INFO L495 AbstractCegarLoop]: Abstraction has 4934 states and 8489 transitions. [2023-12-15 17:43:53,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 8489 transitions. [2023-12-15 17:43:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:53,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:53,356 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] [2023-12-15 17:43:53,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:43:53,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 918740936, now seen corresponding path program 1 times [2023-12-15 17:43:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673197613] [2023-12-15 17:43:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:53,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673197613] [2023-12-15 17:43:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673197613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:53,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910285175] [2023-12-15 17:43:53,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:53,536 INFO L87 Difference]: Start difference. First operand 4934 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:56,568 INFO L93 Difference]: Finished difference Result 11959 states and 20005 transitions. [2023-12-15 17:43:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:43:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:43:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:56,595 INFO L225 Difference]: With dead ends: 11959 [2023-12-15 17:43:56,595 INFO L226 Difference]: Without dead ends: 9163 [2023-12-15 17:43:56,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:43:56,601 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5338 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3329 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5356 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:56,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5356 Valid, 21749 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3329 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 17:43:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2023-12-15 17:43:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 7413. [2023-12-15 17:43:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 6946 states have (on average 1.6841347538151454) internal successors, (11698), 6965 states have internal predecessors, (11698), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-15 17:43:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 12487 transitions. [2023-12-15 17:43:56,777 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 12487 transitions. Word has length 152 [2023-12-15 17:43:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:56,778 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 12487 transitions. [2023-12-15 17:43:56,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:43:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 12487 transitions. [2023-12-15 17:43:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:43:56,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:56,781 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] [2023-12-15 17:43:56,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:43:56,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:56,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1780574538, now seen corresponding path program 1 times [2023-12-15 17:43:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:56,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942466123] [2023-12-15 17:43:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:43:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:43:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:43:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:43:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:43:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942466123] [2023-12-15 17:43:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942466123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:43:56,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:43:56,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310481918] [2023-12-15 17:43:56,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:56,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:43:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:43:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:56,937 INFO L87 Difference]: Start difference. First operand 7413 states and 12487 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:44:00,024 INFO L93 Difference]: Finished difference Result 20880 states and 34589 transitions. [2023-12-15 17:44:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:44:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:44:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:44:00,063 INFO L225 Difference]: With dead ends: 20880 [2023-12-15 17:44:00,063 INFO L226 Difference]: Without dead ends: 15605 [2023-12-15 17:44:00,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:44:00,080 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5337 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5355 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:44:00,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5355 Valid, 21749 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 17:44:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15605 states. [2023-12-15 17:44:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15605 to 12386. [2023-12-15 17:44:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12386 states, 11487 states have (on average 1.649865064855924) internal successors, (18952), 11522 states have internal predecessors, (18952), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-15 17:44:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 20559 transitions. [2023-12-15 17:44:00,424 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 20559 transitions. Word has length 152 [2023-12-15 17:44:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:44:00,424 INFO L495 AbstractCegarLoop]: Abstraction has 12386 states and 20559 transitions. [2023-12-15 17:44:00,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:00,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 20559 transitions. [2023-12-15 17:44:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:44:00,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:44:00,431 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] [2023-12-15 17:44:00,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:44:00,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:44:00,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:44:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -269834360, now seen corresponding path program 1 times [2023-12-15 17:44:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:44:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688578273] [2023-12-15 17:44:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:44:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:44:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:44:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:44:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:00,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:44:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:44:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:44:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:44:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:44:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688578273] [2023-12-15 17:44:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688578273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:44:00,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:44:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:44:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146944048] [2023-12-15 17:44:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:44:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:44:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:44:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:44:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:44:00,592 INFO L87 Difference]: Start difference. First operand 12386 states and 20559 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:44:02,162 INFO L93 Difference]: Finished difference Result 26016 states and 43196 transitions. [2023-12-15 17:44:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:44:02,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:44:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:44:02,207 INFO L225 Difference]: With dead ends: 26016 [2023-12-15 17:44:02,207 INFO L226 Difference]: Without dead ends: 15768 [2023-12-15 17:44:02,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:44:02,236 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 5112 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5131 SdHoareTripleChecker+Valid, 16671 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:44:02,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5131 Valid, 16671 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:44:02,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15768 states. [2023-12-15 17:44:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15768 to 12386. [2023-12-15 17:44:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12386 states, 11487 states have (on average 1.646992252111082) internal successors, (18919), 11522 states have internal predecessors, (18919), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-15 17:44:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 20526 transitions. [2023-12-15 17:44:02,684 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 20526 transitions. Word has length 152 [2023-12-15 17:44:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:44:02,685 INFO L495 AbstractCegarLoop]: Abstraction has 12386 states and 20526 transitions. [2023-12-15 17:44:02,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 20526 transitions. [2023-12-15 17:44:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:44:02,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:44:02,691 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] [2023-12-15 17:44:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:44:02,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:44:02,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:44:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash 218212746, now seen corresponding path program 1 times [2023-12-15 17:44:02,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:44:02,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885350893] [2023-12-15 17:44:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:44:02,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:44:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:44:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:44:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:44:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:44:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:44:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:44:02,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:44:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885350893] [2023-12-15 17:44:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885350893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:44:02,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:44:02,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:44:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935665589] [2023-12-15 17:44:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:44:02,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:44:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:44:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:44:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:44:02,861 INFO L87 Difference]: Start difference. First operand 12386 states and 20526 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:44:06,418 INFO L93 Difference]: Finished difference Result 43169 states and 70985 transitions. [2023-12-15 17:44:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:44:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:44:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:44:06,506 INFO L225 Difference]: With dead ends: 43169 [2023-12-15 17:44:06,507 INFO L226 Difference]: Without dead ends: 32921 [2023-12-15 17:44:06,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:44:06,536 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 5728 mSDsluCounter, 17334 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5758 SdHoareTripleChecker+Valid, 21742 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:44:06,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5758 Valid, 21742 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 17:44:06,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32921 states. [2023-12-15 17:44:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32921 to 22332. [2023-12-15 17:44:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22332 states, 20601 states have (on average 1.6233677976797243) internal successors, (33443), 20668 states have internal predecessors, (33443), 1275 states have call successors, (1275), 391 states have call predecessors, (1275), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-12-15 17:44:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22332 states to 22332 states and 36784 transitions. [2023-12-15 17:44:07,325 INFO L78 Accepts]: Start accepts. Automaton has 22332 states and 36784 transitions. Word has length 152 [2023-12-15 17:44:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:44:07,325 INFO L495 AbstractCegarLoop]: Abstraction has 22332 states and 36784 transitions. [2023-12-15 17:44:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 22332 states and 36784 transitions. [2023-12-15 17:44:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:44:07,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:44:07,335 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] [2023-12-15 17:44:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:44:07,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:44:07,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:44:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash -874422456, now seen corresponding path program 1 times [2023-12-15 17:44:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:44:07,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855843756] [2023-12-15 17:44:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:44:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:44:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:44:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:44:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:44:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:44:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:44:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:44:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:44:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855843756] [2023-12-15 17:44:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855843756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:44:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:44:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:44:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619376194] [2023-12-15 17:44:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:44:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:44:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:44:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:44:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:44:07,498 INFO L87 Difference]: Start difference. First operand 22332 states and 36784 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:44:11,820 INFO L93 Difference]: Finished difference Result 82441 states and 135945 transitions. [2023-12-15 17:44:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:44:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-15 17:44:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:44:11,985 INFO L225 Difference]: With dead ends: 82441 [2023-12-15 17:44:11,986 INFO L226 Difference]: Without dead ends: 62247 [2023-12-15 17:44:12,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:44:12,045 INFO L413 NwaCegarLoop]: 4407 mSDtfsCounter, 5425 mSDsluCounter, 17331 mSDsCounter, 0 mSdLazyCounter, 3870 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5442 SdHoareTripleChecker+Valid, 21738 SdHoareTripleChecker+Invalid, 3937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:44:12,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5442 Valid, 21738 Invalid, 3937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3870 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 17:44:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62247 states. [2023-12-15 17:44:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62247 to 41581. [2023-12-15 17:44:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41581 states, 38218 states have (on average 1.606494322047203) internal successors, (61397), 38349 states have internal predecessors, (61397), 2459 states have call successors, (2459), 775 states have call predecessors, (2459), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-12-15 17:44:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41581 states to 41581 states and 68628 transitions. [2023-12-15 17:44:13,636 INFO L78 Accepts]: Start accepts. Automaton has 41581 states and 68628 transitions. Word has length 152 [2023-12-15 17:44:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:44:13,636 INFO L495 AbstractCegarLoop]: Abstraction has 41581 states and 68628 transitions. [2023-12-15 17:44:13,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-12-15 17:44:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 41581 states and 68628 transitions. [2023-12-15 17:44:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 17:44:13,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:44:13,654 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] [2023-12-15 17:44:13,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:44:13,654 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:44:13,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:44:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2138372554, now seen corresponding path program 1 times [2023-12-15 17:44:13,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:44:13,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114188789] [2023-12-15 17:44:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:44:13,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:44:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:44:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:44:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:44:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:44:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:44:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:44:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:44:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:44:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114188789] [2023-12-15 17:44:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114188789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:44:13,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:44:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:44:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204190465] [2023-12-15 17:44:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:44:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:44:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:44:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:44:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:44:13,805 INFO L87 Difference]: Start difference. First operand 41581 states and 68628 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) Received shutdown request... [2023-12-15 17:44:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:44:16,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:44:16,801 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1474 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:44:16,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 2675 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:44:16,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:44:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:44:16,803 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (41581states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (38120 states constructed, input type IntersectNwa). [2023-12-15 17:44:16,805 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:44:16,808 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:44:16,809 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:44:16,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:44:16 BoogieIcfgContainer [2023-12-15 17:44:16,811 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:44:16,814 INFO L158 Benchmark]: Toolchain (without parser) took 54459.93ms. Allocated memory was 220.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 148.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 460.8MB. Max. memory is 8.0GB. [2023-12-15 17:44:16,814 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 220.2MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:44:16,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2155.62ms. Allocated memory was 220.2MB in the beginning and 266.3MB in the end (delta: 46.1MB). Free memory was 147.8MB in the beginning and 88.4MB in the end (delta: 59.4MB). Peak memory consumption was 110.1MB. Max. memory is 8.0GB. [2023-12-15 17:44:16,814 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:44:16,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 284.88ms. Allocated memory is still 266.3MB. Free memory was 88.4MB in the beginning and 96.3MB in the end (delta: -7.9MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 17:44:16,815 INFO L158 Benchmark]: Boogie Preprocessor took 513.79ms. Allocated memory was 266.3MB in the beginning and 406.8MB in the end (delta: 140.5MB). Free memory was 96.3MB in the beginning and 219.5MB in the end (delta: -123.2MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. [2023-12-15 17:44:16,815 INFO L158 Benchmark]: RCFGBuilder took 5753.18ms. Allocated memory was 406.8MB in the beginning and 789.6MB in the end (delta: 382.7MB). Free memory was 219.5MB in the beginning and 461.0MB in the end (delta: -241.5MB). Peak memory consumption was 409.1MB. Max. memory is 8.0GB. [2023-12-15 17:44:16,818 INFO L158 Benchmark]: TraceAbstraction took 45747.22ms. Allocated memory was 789.6MB in the beginning and 2.3GB in the end (delta: 1.5GB). Free memory was 460.5MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 202.2MB. Max. memory is 8.0GB. [2023-12-15 17:44:16,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 220.2MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2155.62ms. Allocated memory was 220.2MB in the beginning and 266.3MB in the end (delta: 46.1MB). Free memory was 147.8MB in the beginning and 88.4MB in the end (delta: 59.4MB). Peak memory consumption was 110.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 284.88ms. Allocated memory is still 266.3MB. Free memory was 88.4MB in the beginning and 96.3MB in the end (delta: -7.9MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 513.79ms. Allocated memory was 266.3MB in the beginning and 406.8MB in the end (delta: 140.5MB). Free memory was 96.3MB in the beginning and 219.5MB in the end (delta: -123.2MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. * RCFGBuilder took 5753.18ms. Allocated memory was 406.8MB in the beginning and 789.6MB in the end (delta: 382.7MB). Free memory was 219.5MB in the beginning and 461.0MB in the end (delta: -241.5MB). Peak memory consumption was 409.1MB. Max. memory is 8.0GB. * TraceAbstraction took 45747.22ms. Allocated memory was 789.6MB in the beginning and 2.3GB in the end (delta: 1.5GB). Free memory was 460.5MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 202.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (41581states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (38120 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 11094]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11094). Cancelled while NwaCegarLoop was constructing difference of abstraction (41581states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (38120 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2456 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 45.7s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71048 SdHoareTripleChecker+Valid, 25.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70771 mSDsluCounter, 283918 SdHoareTripleChecker+Invalid, 21.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 223020 mSDsCounter, 1047 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37412 IncrementalHoareTripleChecker+Invalid, 38459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1047 mSolverCounterUnsat, 60898 mSDtfsCounter, 37412 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41581occurred in iteration=14, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 44558 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 2280 NumberOfCodeBlocks, 2280 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2265 ConstructedInterpolants, 0 QuantifiedInterpolants, 6726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown