/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:18:56,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:18:56,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:18:56,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:18:56,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:18:56,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:18:56,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:18:56,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:18:56,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:18:56,313 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:18:56,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:18:56,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:18:56,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:18:56,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:18:56,315 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:18:56,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:18:56,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:18:56,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:18:56,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:18:56,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:18:56,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:18:56,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:18:56,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:18:56,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:18:56,327 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:18:56,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:18:56,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:18:56,327 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:18:56,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:18:56,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:18:56,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:18:56,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:18:56,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:18:56,329 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:18:56,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:18:56,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:18:56,330 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:18:56,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:18:56,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:18:56,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:18:56,535 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:18:56,536 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:18:56,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.12.cil-1.c [2023-12-21 11:18:57,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:18:57,814 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:18:57,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-1.c [2023-12-21 11:18:57,836 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6ba4a28/cc8a0c8107714570a29985d5bd7b841b/FLAG97e56614a [2023-12-21 11:18:58,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6ba4a28/cc8a0c8107714570a29985d5bd7b841b [2023-12-21 11:18:58,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:18:58,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:18:58,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:18:58,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:18:58,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:18:58,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51517708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58, skipping insertion in model container [2023-12-21 11:18:58,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:18:58,339 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-1.c[671,684] [2023-12-21 11:18:58,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:18:58,425 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:18:58,432 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-1.c[671,684] [2023-12-21 11:18:58,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:18:58,489 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:18:58,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58 WrapperNode [2023-12-21 11:18:58,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:18:58,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:18:58,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:18:58,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:18:58,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,552 INFO L138 Inliner]: procedures = 52, calls = 68, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 885 [2023-12-21 11:18:58,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:18:58,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:18:58,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:18:58,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:18:58,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,594 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]. [2023-12-21 11:18:58,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:18:58,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:18:58,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:18:58,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:18:58,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (1/1) ... [2023-12-21 11:18:58,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:18:58,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:18:58,693 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) [2023-12-21 11:18:58,713 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 [2023-12-21 11:18:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:18:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:18:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:18:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:18:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:18:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:18:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:18:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-21 11:18:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-21 11:18:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:18:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:18:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:18:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:18:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:18:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:18:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:18:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:18:58,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:18:58,826 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:18:58,827 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:18:59,387 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:18:59,445 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:18:59,445 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-21 11:18:59,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:18:59 BoogieIcfgContainer [2023-12-21 11:18:59,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:18:59,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:18:59,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:18:59,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:18:59,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:18:58" (1/3) ... [2023-12-21 11:18:59,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e95a369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:18:59, skipping insertion in model container [2023-12-21 11:18:59,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:58" (2/3) ... [2023-12-21 11:18:59,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e95a369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:18:59, skipping insertion in model container [2023-12-21 11:18:59,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:18:59" (3/3) ... [2023-12-21 11:18:59,454 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-1.c [2023-12-21 11:18:59,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:18:59,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:18:59,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:18:59,507 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;@6a03d35f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:18:59,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:18:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 319 states have (on average 1.7398119122257054) internal successors, (555), 323 states have internal predecessors, (555), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 11:18:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:18:59,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:59,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:59,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:59,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 894378514, now seen corresponding path program 1 times [2023-12-21 11:18:59,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:59,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664079928] [2023-12-21 11:18:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:00,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:00,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:00,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:00,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664079928] [2023-12-21 11:19:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664079928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:00,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:00,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:19:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630554785] [2023-12-21 11:19:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:00,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:19:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:00,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:19:00,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:19:00,176 INFO L87 Difference]: Start difference. First operand has 356 states, 319 states have (on average 1.7398119122257054) internal successors, (555), 323 states have internal predecessors, (555), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-12-21 11:19:01,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:01,721 INFO L93 Difference]: Finished difference Result 833 states and 1441 transitions. [2023-12-21 11:19:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:19:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:01,733 INFO L225 Difference]: With dead ends: 833 [2023-12-21 11:19:01,733 INFO L226 Difference]: Without dead ends: 483 [2023-12-21 11:19:01,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:19:01,746 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 989 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:01,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 654 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:19:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-21 11:19:01,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 353. [2023-12-21 11:19:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 318 states have (on average 1.6383647798742138) internal successors, (521), 320 states have internal predecessors, (521), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 11:19:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 575 transitions. [2023-12-21 11:19:01,825 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 575 transitions. Word has length 161 [2023-12-21 11:19:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:01,825 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 575 transitions. [2023-12-21 11:19:01,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-12-21 11:19:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 575 transitions. [2023-12-21 11:19:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:01,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:01,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:19:01,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:01,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash -999955372, now seen corresponding path program 1 times [2023-12-21 11:19:01,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:01,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356987284] [2023-12-21 11:19:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:02,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:02,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356987284] [2023-12-21 11:19:02,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356987284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:02,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:02,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:19:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307441842] [2023-12-21 11:19:02,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:02,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:19:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:19:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:19:02,025 INFO L87 Difference]: Start difference. First operand 353 states and 575 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-12-21 11:19:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:03,401 INFO L93 Difference]: Finished difference Result 820 states and 1354 transitions. [2023-12-21 11:19:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:19:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:03,404 INFO L225 Difference]: With dead ends: 820 [2023-12-21 11:19:03,404 INFO L226 Difference]: Without dead ends: 483 [2023-12-21 11:19:03,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:19:03,406 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 978 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:03,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 649 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:19:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-21 11:19:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 353. [2023-12-21 11:19:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 318 states have (on average 1.6352201257861636) internal successors, (520), 320 states have internal predecessors, (520), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 11:19:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 574 transitions. [2023-12-21 11:19:03,423 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 574 transitions. Word has length 161 [2023-12-21 11:19:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:03,423 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 574 transitions. [2023-12-21 11:19:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-12-21 11:19:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 574 transitions. [2023-12-21 11:19:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:03,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:03,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:03,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:19:03,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:03,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1338242922, now seen corresponding path program 1 times [2023-12-21 11:19:03,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:03,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584988590] [2023-12-21 11:19:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:03,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:03,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:03,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584988590] [2023-12-21 11:19:03,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584988590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:03,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:03,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:19:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275615760] [2023-12-21 11:19:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:03,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:19:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:19:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:19:03,646 INFO L87 Difference]: Start difference. First operand 353 states and 574 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 4 states have internal predecessors, (150), 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) [2023-12-21 11:19:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:05,964 INFO L93 Difference]: Finished difference Result 1302 states and 2164 transitions. [2023-12-21 11:19:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:19:05,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 4 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:05,969 INFO L225 Difference]: With dead ends: 1302 [2023-12-21 11:19:05,970 INFO L226 Difference]: Without dead ends: 967 [2023-12-21 11:19:05,973 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 [2023-12-21 11:19:05,975 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1492 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:05,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1097 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:19:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-12-21 11:19:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 706. [2023-12-21 11:19:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 643 states have (on average 1.6454121306376361) internal successors, (1058), 646 states have internal predecessors, (1058), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-21 11:19:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1157 transitions. [2023-12-21 11:19:06,019 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1157 transitions. Word has length 161 [2023-12-21 11:19:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:06,019 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1157 transitions. [2023-12-21 11:19:06,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 4 states have internal predecessors, (150), 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) [2023-12-21 11:19:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1157 transitions. [2023-12-21 11:19:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:06,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:06,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:06,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:19:06,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:06,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash 751355990, now seen corresponding path program 1 times [2023-12-21 11:19:06,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:06,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386376047] [2023-12-21 11:19:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:06,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386376047] [2023-12-21 11:19:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386376047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:06,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:06,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:06,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129497205] [2023-12-21 11:19:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:06,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:06,255 INFO L87 Difference]: Start difference. First operand 706 states and 1157 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:09,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:09,669 INFO L93 Difference]: Finished difference Result 2157 states and 3590 transitions. [2023-12-21 11:19:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:09,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:09,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:09,676 INFO L225 Difference]: With dead ends: 2157 [2023-12-21 11:19:09,676 INFO L226 Difference]: Without dead ends: 1469 [2023-12-21 11:19:09,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:19:09,685 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1527 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3735 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:09,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2097 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3735 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 11:19:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-12-21 11:19:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1032. [2023-12-21 11:19:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 941 states have (on average 1.638682252922423) internal successors, (1542), 945 states have internal predecessors, (1542), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-21 11:19:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1685 transitions. [2023-12-21 11:19:09,734 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1685 transitions. Word has length 161 [2023-12-21 11:19:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:09,734 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1685 transitions. [2023-12-21 11:19:09,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1685 transitions. [2023-12-21 11:19:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:09,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:09,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:09,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:19:09,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:09,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:09,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1161966356, now seen corresponding path program 1 times [2023-12-21 11:19:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:09,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250622279] [2023-12-21 11:19:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:09,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:09,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250622279] [2023-12-21 11:19:09,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250622279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:09,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426157021] [2023-12-21 11:19:09,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:09,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:09,955 INFO L87 Difference]: Start difference. First operand 1032 states and 1685 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:12,873 INFO L93 Difference]: Finished difference Result 3410 states and 5666 transitions. [2023-12-21 11:19:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:12,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:12,883 INFO L225 Difference]: With dead ends: 3410 [2023-12-21 11:19:12,883 INFO L226 Difference]: Without dead ends: 2396 [2023-12-21 11:19:12,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:19:12,887 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1639 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 3094 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:12,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 1354 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3094 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:19:12,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-12-21 11:19:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1685. [2023-12-21 11:19:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1538 states have (on average 1.6326397919375812) internal successors, (2511), 1544 states have internal predecessors, (2511), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-21 11:19:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2746 transitions. [2023-12-21 11:19:12,952 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2746 transitions. Word has length 161 [2023-12-21 11:19:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:12,952 INFO L495 AbstractCegarLoop]: Abstraction has 1685 states and 2746 transitions. [2023-12-21 11:19:12,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2746 transitions. [2023-12-21 11:19:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:12,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:12,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:12,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:19:12,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:12,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:12,954 INFO L85 PathProgramCache]: Analyzing trace with hash -625903466, now seen corresponding path program 1 times [2023-12-21 11:19:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:12,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498139125] [2023-12-21 11:19:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:12,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:13,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:13,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498139125] [2023-12-21 11:19:13,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498139125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:13,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:13,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315518293] [2023-12-21 11:19:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:13,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:13,237 INFO L87 Difference]: Start difference. First operand 1685 states and 2746 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:16,635 INFO L93 Difference]: Finished difference Result 5811 states and 9623 transitions. [2023-12-21 11:19:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:16,649 INFO L225 Difference]: With dead ends: 5811 [2023-12-21 11:19:16,649 INFO L226 Difference]: Without dead ends: 4144 [2023-12-21 11:19:16,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:19:16,654 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1525 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:16,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2095 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 11:19:16,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2023-12-21 11:19:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 2992. [2023-12-21 11:19:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2733 states have (on average 1.62788144895719) internal successors, (4449), 2743 states have internal predecessors, (4449), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-21 11:19:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4874 transitions. [2023-12-21 11:19:16,749 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4874 transitions. Word has length 161 [2023-12-21 11:19:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:16,749 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 4874 transitions. [2023-12-21 11:19:16,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4874 transitions. [2023-12-21 11:19:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:16,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:16,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:16,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:19:16,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:16,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1533180628, now seen corresponding path program 1 times [2023-12-21 11:19:16,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:16,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270105802] [2023-12-21 11:19:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:16,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:16,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:16,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:16,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:16,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270105802] [2023-12-21 11:19:16,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270105802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:16,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:16,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:16,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964135757] [2023-12-21 11:19:16,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:16,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:16,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:16,988 INFO L87 Difference]: Start difference. First operand 2992 states and 4874 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:20,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:20,487 INFO L93 Difference]: Finished difference Result 10605 states and 17541 transitions. [2023-12-21 11:19:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:20,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:20,511 INFO L225 Difference]: With dead ends: 10605 [2023-12-21 11:19:20,512 INFO L226 Difference]: Without dead ends: 7631 [2023-12-21 11:19:20,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:19:20,519 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1521 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:20,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2095 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 11:19:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2023-12-21 11:19:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 5620. [2023-12-21 11:19:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 5137 states have (on average 1.6252676659528908) internal successors, (8349), 5155 states have internal predecessors, (8349), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-21 11:19:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 9172 transitions. [2023-12-21 11:19:20,695 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 9172 transitions. Word has length 161 [2023-12-21 11:19:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:20,696 INFO L495 AbstractCegarLoop]: Abstraction has 5620 states and 9172 transitions. [2023-12-21 11:19:20,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 9172 transitions. [2023-12-21 11:19:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:20,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:20,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:19:20,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1951069330, now seen corresponding path program 1 times [2023-12-21 11:19:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018398873] [2023-12-21 11:19:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:20,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018398873] [2023-12-21 11:19:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018398873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:20,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037786856] [2023-12-21 11:19:20,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:20,969 INFO L87 Difference]: Start difference. First operand 5620 states and 9172 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:24,463 INFO L93 Difference]: Finished difference Result 20211 states and 33469 transitions. [2023-12-21 11:19:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:24,525 INFO L225 Difference]: With dead ends: 20211 [2023-12-21 11:19:24,525 INFO L226 Difference]: Without dead ends: 14609 [2023-12-21 11:19:24,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:19:24,540 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1520 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3683 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:24,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 2095 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3683 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 11:19:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14609 states. [2023-12-21 11:19:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14609 to 10889. [2023-12-21 11:19:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10889 states, 9958 states have (on average 1.6235187788712593) internal successors, (16167), 9992 states have internal predecessors, (16167), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-21 11:19:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10889 states to 10889 states and 17840 transitions. [2023-12-21 11:19:24,953 INFO L78 Accepts]: Start accepts. Automaton has 10889 states and 17840 transitions. Word has length 161 [2023-12-21 11:19:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:24,953 INFO L495 AbstractCegarLoop]: Abstraction has 10889 states and 17840 transitions. [2023-12-21 11:19:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 10889 states and 17840 transitions. [2023-12-21 11:19:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:24,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:24,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:24,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:19:24,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:24,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash -944944364, now seen corresponding path program 1 times [2023-12-21 11:19:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997702783] [2023-12-21 11:19:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:24,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:25,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:25,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997702783] [2023-12-21 11:19:25,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997702783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:25,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:25,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336117186] [2023-12-21 11:19:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:25,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:25,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:25,134 INFO L87 Difference]: Start difference. First operand 10889 states and 17840 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:28,672 INFO L93 Difference]: Finished difference Result 39422 states and 65515 transitions. [2023-12-21 11:19:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:28,794 INFO L225 Difference]: With dead ends: 39422 [2023-12-21 11:19:28,795 INFO L226 Difference]: Without dead ends: 28551 [2023-12-21 11:19:28,825 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 [2023-12-21 11:19:28,826 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1519 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:28,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2095 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 11:19:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28551 states. [2023-12-21 11:19:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28551 to 21458. [2023-12-21 11:19:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21458 states, 19631 states have (on average 1.6223829657174877) internal successors, (31849), 19697 states have internal predecessors, (31849), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-21 11:19:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21458 states to 21458 states and 35384 transitions. [2023-12-21 11:19:29,756 INFO L78 Accepts]: Start accepts. Automaton has 21458 states and 35384 transitions. Word has length 161 [2023-12-21 11:19:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:29,756 INFO L495 AbstractCegarLoop]: Abstraction has 21458 states and 35384 transitions. [2023-12-21 11:19:29,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21458 states and 35384 transitions. [2023-12-21 11:19:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:29,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:29,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:19:29,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:29,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1732582482, now seen corresponding path program 1 times [2023-12-21 11:19:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25774051] [2023-12-21 11:19:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:29,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:29,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25774051] [2023-12-21 11:19:29,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25774051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:29,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:29,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001843729] [2023-12-21 11:19:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:29,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:29,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:29,991 INFO L87 Difference]: Start difference. First operand 21458 states and 35384 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:33,707 INFO L93 Difference]: Finished difference Result 77845 states and 130209 transitions. [2023-12-21 11:19:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:33,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:33,864 INFO L225 Difference]: With dead ends: 77845 [2023-12-21 11:19:33,864 INFO L226 Difference]: Without dead ends: 56405 [2023-12-21 11:19:33,906 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 [2023-12-21 11:19:33,906 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1518 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:33,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2095 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:19:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56405 states. [2023-12-21 11:19:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56405 to 42659. [2023-12-21 11:19:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42659 states, 39040 states have (on average 1.621593237704918) internal successors, (63307), 39170 states have internal predecessors, (63307), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-12-21 11:19:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42659 states to 42659 states and 71052 transitions. [2023-12-21 11:19:35,711 INFO L78 Accepts]: Start accepts. Automaton has 42659 states and 71052 transitions. Word has length 161 [2023-12-21 11:19:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:35,711 INFO L495 AbstractCegarLoop]: Abstraction has 42659 states and 71052 transitions. [2023-12-21 11:19:35,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42659 states and 71052 transitions. [2023-12-21 11:19:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:35,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:35,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:35,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:19:35,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:35,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2096048980, now seen corresponding path program 1 times [2023-12-21 11:19:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:35,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576165766] [2023-12-21 11:19:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:35,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576165766] [2023-12-21 11:19:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576165766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306251340] [2023-12-21 11:19:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:35,919 INFO L87 Difference]: Start difference. First operand 42659 states and 71052 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:41,289 INFO L93 Difference]: Finished difference Result 154692 states and 261447 transitions. [2023-12-21 11:19:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:41,671 INFO L225 Difference]: With dead ends: 154692 [2023-12-21 11:19:41,671 INFO L226 Difference]: Without dead ends: 112051 [2023-12-21 11:19:41,767 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 [2023-12-21 11:19:41,768 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1517 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:41,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 2095 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 11:19:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112051 states. [2023-12-21 11:19:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112051 to 85188. [2023-12-21 11:19:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85188 states, 77985 states have (on average 1.620991216259537) internal successors, (126413), 78243 states have internal predecessors, (126413), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2023-12-21 11:19:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85188 states to 85188 states and 144036 transitions. [2023-12-21 11:19:45,176 INFO L78 Accepts]: Start accepts. Automaton has 85188 states and 144036 transitions. Word has length 161 [2023-12-21 11:19:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:45,176 INFO L495 AbstractCegarLoop]: Abstraction has 85188 states and 144036 transitions. [2023-12-21 11:19:45,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 85188 states and 144036 transitions. [2023-12-21 11:19:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:19:45,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:45,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:45,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:19:45,222 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1910098926, now seen corresponding path program 1 times [2023-12-21 11:19:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:45,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387813583] [2023-12-21 11:19:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:45,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:19:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:19:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:19:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:19:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387813583] [2023-12-21 11:19:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387813583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:45,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:45,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:45,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907267986] [2023-12-21 11:19:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:45,562 INFO L87 Difference]: Start difference. First operand 85188 states and 144036 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:19:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:52,976 INFO L93 Difference]: Finished difference Result 308387 states and 529565 transitions. [2023-12-21 11:19:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:19:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:19:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:54,125 INFO L225 Difference]: With dead ends: 308387 [2023-12-21 11:19:54,126 INFO L226 Difference]: Without dead ends: 223217 [2023-12-21 11:19:54,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:19:54,334 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1618 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:54,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 1354 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3027 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:19:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223217 states. [2023-12-21 11:20:00,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223217 to 170501. [2023-12-21 11:20:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170501 states, 156130 states have (on average 1.620489335809902) internal successors, (253007), 156644 states have internal predecessors, (253007), 10780 states have call successors, (10780), 3079 states have call predecessors, (10780), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2023-12-21 11:20:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170501 states to 170501 states and 294760 transitions. [2023-12-21 11:20:01,497 INFO L78 Accepts]: Start accepts. Automaton has 170501 states and 294760 transitions. Word has length 161 [2023-12-21 11:20:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:20:01,497 INFO L495 AbstractCegarLoop]: Abstraction has 170501 states and 294760 transitions. [2023-12-21 11:20:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:20:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 170501 states and 294760 transitions. [2023-12-21 11:20:01,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:20:01,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:20:01,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:20:01,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:20:01,587 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:20:01,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:20:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1839995796, now seen corresponding path program 1 times [2023-12-21 11:20:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:20:01,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757601832] [2023-12-21 11:20:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:20:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:20:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:20:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:20:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:20:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 11:20:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:20:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 11:20:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:20:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:20:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:20:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:20:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:20:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:20:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:20:01,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757601832] [2023-12-21 11:20:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757601832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:20:01,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:20:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:20:01,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441271059] [2023-12-21 11:20:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:20:01,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:20:01,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:20:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:20:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:20:01,780 INFO L87 Difference]: Start difference. First operand 170501 states and 294760 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:20:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:20:14,775 INFO L93 Difference]: Finished difference Result 615778 states and 1082915 transitions. [2023-12-21 11:20:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:20:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-21 11:20:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:20:17,118 INFO L225 Difference]: With dead ends: 615778 [2023-12-21 11:20:17,118 INFO L226 Difference]: Without dead ends: 445295 [2023-12-21 11:20:17,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:20:17,795 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1521 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:20:17,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2095 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 11:20:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445295 states. [2023-12-21 11:20:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445295 to 341638. [2023-12-21 11:20:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341638 states, 312931 states have (on average 1.6200408396739217) internal successors, (506961), 313957 states have internal predecessors, (506961), 21532 states have call successors, (21532), 6151 states have call predecessors, (21532), 7174 states have return successors, (81603), 22553 states have call predecessors, (81603), 21530 states have call successors, (81603) [2023-12-21 11:20:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341638 states to 341638 states and 610096 transitions. [2023-12-21 11:20:33,187 INFO L78 Accepts]: Start accepts. Automaton has 341638 states and 610096 transitions. Word has length 161 [2023-12-21 11:20:33,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:20:33,188 INFO L495 AbstractCegarLoop]: Abstraction has 341638 states and 610096 transitions. [2023-12-21 11:20:33,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-12-21 11:20:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 341638 states and 610096 transitions. [2023-12-21 11:20:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 11:20:33,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:20:33,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:20:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:20:33,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:20:33,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:20:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1779811374, now seen corresponding path program 1 times [2023-12-21 11:20:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:20:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929926297] [2023-12-21 11:20:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:20:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:20:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat