/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/eca-programs/Problem101_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 18:17:51,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 18:17:51,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 18:17:51,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 18:17:51,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 18:17:51,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 18:17:51,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 18:17:51,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 18:17:51,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 18:17:51,488 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 18:17:51,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 18:17:51,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 18:17:51,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 18:17:51,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 18:17:51,490 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 18:17:51,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 18:17:51,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 18:17:51,490 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 18:17:51,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 18:17:51,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 18:17:51,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 18:17:51,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 18:17:51,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 18:17:51,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 18:17:51,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 18:17:51,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 18:17:51,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 18:17:51,493 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 18:17:51,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 18:17:51,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 18:17:51,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 18:17:51,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 18:17:51,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 18:17:51,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 18:17:51,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 18:17:51,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 18:17:51,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 18:17:51,497 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 18:17:51,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 18:17:51,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 18:17:51,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 18:17:51,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 18:17:51,749 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 18:17:51,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-programs/Problem101_label15.c [2023-12-20 18:17:52,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 18:17:54,449 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 18:17:54,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-programs/Problem101_label15.c [2023-12-20 18:17:54,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238bd6e7c/eda6e66e5b3e42c1a3b94a8a8d1e4224/FLAG13f0fc013 [2023-12-20 18:17:54,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238bd6e7c/eda6e66e5b3e42c1a3b94a8a8d1e4224 [2023-12-20 18:17:54,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 18:17:54,561 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 18:17:54,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 18:17:54,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 18:17:54,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 18:17:54,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:17:54" (1/1) ... [2023-12-20 18:17:54,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e775ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:17:54, skipping insertion in model container [2023-12-20 18:17:54,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:17:54" (1/1) ... [2023-12-20 18:17:55,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 18:18:02,556 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-programs/Problem101_label15.c[2770376,2770389] [2023-12-20 18:18:02,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 18:18:02,623 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 18:18:07,065 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-programs/Problem101_label15.c[2770376,2770389] [2023-12-20 18:18:07,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 18:18:07,579 INFO L206 MainTranslator]: Completed translation [2023-12-20 18:18:07,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07 WrapperNode [2023-12-20 18:18:07,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 18:18:07,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 18:18:07,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 18:18:07,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 18:18:07,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:08,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:10,334 INFO L138 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83826 [2023-12-20 18:18:10,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 18:18:10,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 18:18:10,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 18:18:10,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 18:18:10,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:10,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:10,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:11,160 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 18:18:11,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:11,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:12,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:12,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:12,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:12,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:13,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 18:18:13,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 18:18:13,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 18:18:13,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 18:18:13,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (1/1) ... [2023-12-20 18:18:13,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 18:18:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:18:13,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 18:18:13,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 18:18:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 18:18:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 18:18:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 18:18:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 18:18:13,221 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 18:18:13,223 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 18:18:47,975 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 18:18:48,162 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 18:18:48,162 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 18:18:48,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:18:48 BoogieIcfgContainer [2023-12-20 18:18:48,163 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 18:18:48,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 18:18:48,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 18:18:48,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 18:18:48,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:17:54" (1/3) ... [2023-12-20 18:18:48,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769fe4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:18:48, skipping insertion in model container [2023-12-20 18:18:48,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:18:07" (2/3) ... [2023-12-20 18:18:48,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769fe4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:18:48, skipping insertion in model container [2023-12-20 18:18:48,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:18:48" (3/3) ... [2023-12-20 18:18:48,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem101_label15.c [2023-12-20 18:18:48,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 18:18:48,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 18:18:48,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 18:18:48,369 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;@517bfb24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 18:18:48,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 18:18:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:18:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10109 [2023-12-20 18:18:49,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:18:49,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:18:49,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:18:49,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:18:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1603361460, now seen corresponding path program 1 times [2023-12-20 18:18:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:18:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565124576] [2023-12-20 18:18:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:18:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:18:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:19:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:19:15,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:19:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565124576] [2023-12-20 18:19:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565124576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:19:15,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:19:15,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:19:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531864164] [2023-12-20 18:19:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:19:15,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 18:19:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:19:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 18:19:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 18:19:16,033 INFO L87 Difference]: Start difference. First operand has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5054.0) internal successors, (10108), 2 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:19:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:19:16,655 INFO L93 Difference]: Finished difference Result 20389 states and 40675 transitions. [2023-12-20 18:19:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 18:19:16,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5054.0) internal successors, (10108), 2 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10108 [2023-12-20 18:19:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:19:16,739 INFO L225 Difference]: With dead ends: 20389 [2023-12-20 18:19:16,739 INFO L226 Difference]: Without dead ends: 10193 [2023-12-20 18:19:16,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 18:19:16,780 INFO L413 NwaCegarLoop]: 20273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 18:19:16,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 18:19:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10193 states. [2023-12-20 18:19:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193. [2023-12-20 18:19:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10193 states, 10192 states have (on average 1.9891091051805339) internal successors, (20273), 10192 states have internal predecessors, (20273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:19:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions. [2023-12-20 18:19:17,275 INFO L78 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10108 [2023-12-20 18:19:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:19:17,309 INFO L495 AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions. [2023-12-20 18:19:17,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5054.0) internal successors, (10108), 2 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:19:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions. [2023-12-20 18:19:18,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10109 [2023-12-20 18:19:18,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:19:18,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:19:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 18:19:18,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:19:18,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:19:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash 895266273, now seen corresponding path program 1 times [2023-12-20 18:19:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:19:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328964174] [2023-12-20 18:19:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:19:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:19:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:19:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:19:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:19:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328964174] [2023-12-20 18:19:45,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328964174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:19:45,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:19:45,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:19:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666256536] [2023-12-20 18:19:45,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:19:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:19:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:19:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:19:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:19:45,331 INFO L87 Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand has 3 states, 3 states have (on average 3369.3333333333335) internal successors, (10108), 2 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:20:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:20:20,864 INFO L93 Difference]: Finished difference Result 30575 states and 60816 transitions. [2023-12-20 18:20:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:20:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3369.3333333333335) internal successors, (10108), 2 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10108 [2023-12-20 18:20:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:20:20,978 INFO L225 Difference]: With dead ends: 30575 [2023-12-20 18:20:20,978 INFO L226 Difference]: Without dead ends: 20383 [2023-12-20 18:20:20,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:20:20,995 INFO L413 NwaCegarLoop]: 4042 mSDtfsCounter, 451 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30946 mSolverCounterSat, 12467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 43413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12467 IncrementalHoareTripleChecker+Valid, 30946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:20:20,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 4092 Invalid, 43413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12467 Valid, 30946 Invalid, 0 Unknown, 0 Unchecked, 34.9s Time] [2023-12-20 18:20:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20383 states. [2023-12-20 18:20:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383. [2023-12-20 18:20:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20383 states, 20382 states have (on average 1.7945736434108528) internal successors, (36577), 20382 states have internal predecessors, (36577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:20:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 36577 transitions. [2023-12-20 18:20:21,616 INFO L78 Accepts]: Start accepts. Automaton has 20383 states and 36577 transitions. Word has length 10108 [2023-12-20 18:20:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:20:21,625 INFO L495 AbstractCegarLoop]: Abstraction has 20383 states and 36577 transitions. [2023-12-20 18:20:21,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3369.3333333333335) internal successors, (10108), 2 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:20:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 20383 states and 36577 transitions. [2023-12-20 18:20:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10113 [2023-12-20 18:20:22,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:20:22,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:20:22,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 18:20:22,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:20:22,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:20:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1867240633, now seen corresponding path program 1 times [2023-12-20 18:20:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:20:22,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53678305] [2023-12-20 18:20:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:20:22,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:20:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:20:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:20:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:20:35,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53678305] [2023-12-20 18:20:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53678305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:20:35,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:20:35,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:20:35,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530240115] [2023-12-20 18:20:35,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:20:35,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:20:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:20:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:20:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:20:35,932 INFO L87 Difference]: Start difference. First operand 20383 states and 36577 transitions. Second operand has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:21:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:21:10,419 INFO L93 Difference]: Finished difference Result 61145 states and 109728 transitions. [2023-12-20 18:21:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:21:10,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10112 [2023-12-20 18:21:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:21:10,504 INFO L225 Difference]: With dead ends: 61145 [2023-12-20 18:21:10,505 INFO L226 Difference]: Without dead ends: 40763 [2023-12-20 18:21:10,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:21:10,536 INFO L413 NwaCegarLoop]: 4826 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28701 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 40459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-12-20 18:21:10,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13865 Valid, 4875 Invalid, 40459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28701 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2023-12-20 18:21:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40763 states. [2023-12-20 18:21:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763. [2023-12-20 18:21:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40763 states, 40762 states have (on average 1.6070850301751631) internal successors, (65508), 40762 states have internal predecessors, (65508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:21:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 65508 transitions. [2023-12-20 18:21:11,150 INFO L78 Accepts]: Start accepts. Automaton has 40763 states and 65508 transitions. Word has length 10112 [2023-12-20 18:21:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:21:11,152 INFO L495 AbstractCegarLoop]: Abstraction has 40763 states and 65508 transitions. [2023-12-20 18:21:11,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:21:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 40763 states and 65508 transitions. [2023-12-20 18:21:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10115 [2023-12-20 18:21:11,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:21:11,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:21:11,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 18:21:11,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:21:11,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:21:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1724137154, now seen corresponding path program 1 times [2023-12-20 18:21:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:21:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755452813] [2023-12-20 18:21:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:21:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:21:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:21:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:21:24,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:21:24,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755452813] [2023-12-20 18:21:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755452813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:21:24,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:21:24,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:21:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411579421] [2023-12-20 18:21:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:21:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:21:24,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:21:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:21:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:21:24,531 INFO L87 Difference]: Start difference. First operand 40763 states and 65508 transitions. Second operand has 3 states, 3 states have (on average 3371.3333333333335) internal successors, (10114), 2 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:21:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:21:56,424 INFO L93 Difference]: Finished difference Result 122285 states and 196521 transitions. [2023-12-20 18:21:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:21:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3371.3333333333335) internal successors, (10114), 2 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10114 [2023-12-20 18:21:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:21:56,584 INFO L225 Difference]: With dead ends: 122285 [2023-12-20 18:21:56,584 INFO L226 Difference]: Without dead ends: 81523 [2023-12-20 18:21:56,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:21:56,641 INFO L413 NwaCegarLoop]: 4818 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28826 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 40503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:21:56,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13685 Valid, 4867 Invalid, 40503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28826 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2023-12-20 18:21:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81523 states. [2023-12-20 18:21:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523. [2023-12-20 18:21:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81523 states, 81522 states have (on average 1.4645371801476903) internal successors, (119392), 81522 states have internal predecessors, (119392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:21:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 119392 transitions. [2023-12-20 18:21:57,793 INFO L78 Accepts]: Start accepts. Automaton has 81523 states and 119392 transitions. Word has length 10114 [2023-12-20 18:21:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:21:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 81523 states and 119392 transitions. [2023-12-20 18:21:57,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3371.3333333333335) internal successors, (10114), 2 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:21:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 81523 states and 119392 transitions. [2023-12-20 18:21:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10126 [2023-12-20 18:21:58,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:21:58,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:21:58,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 18:21:58,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:21:58,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:21:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash -181583659, now seen corresponding path program 1 times [2023-12-20 18:21:58,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:21:58,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773900011] [2023-12-20 18:21:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:21:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:22:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:22:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 18:22:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:22:13,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773900011] [2023-12-20 18:22:13,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773900011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:22:13,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:22:13,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:22:13,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738709613] [2023-12-20 18:22:13,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:22:13,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:22:13,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:22:13,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:22:13,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:22:13,202 INFO L87 Difference]: Start difference. First operand 81523 states and 119392 transitions. Second operand has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:22:47,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:22:47,006 INFO L93 Difference]: Finished difference Result 244565 states and 358173 transitions. [2023-12-20 18:22:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:22:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10125 [2023-12-20 18:22:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:22:47,268 INFO L225 Difference]: With dead ends: 244565 [2023-12-20 18:22:47,268 INFO L226 Difference]: Without dead ends: 163043 [2023-12-20 18:22:47,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:22:47,366 INFO L413 NwaCegarLoop]: 6089 mSDtfsCounter, 13473 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27529 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13473 SdHoareTripleChecker+Valid, 6138 SdHoareTripleChecker+Invalid, 40559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2023-12-20 18:22:47,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13473 Valid, 6138 Invalid, 40559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27529 Invalid, 0 Unknown, 0 Unchecked, 32.5s Time] [2023-12-20 18:22:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163043 states. [2023-12-20 18:22:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043. [2023-12-20 18:22:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163043 states, 163042 states have (on average 1.3309944676831738) internal successors, (217008), 163042 states have internal predecessors, (217008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:22:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 217008 transitions. [2023-12-20 18:22:49,583 INFO L78 Accepts]: Start accepts. Automaton has 163043 states and 217008 transitions. Word has length 10125 [2023-12-20 18:22:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:22:49,584 INFO L495 AbstractCegarLoop]: Abstraction has 163043 states and 217008 transitions. [2023-12-20 18:22:49,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:22:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 163043 states and 217008 transitions. [2023-12-20 18:22:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10157 [2023-12-20 18:22:50,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:22:50,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:22:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 18:22:50,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:22:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:22:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash -341396441, now seen corresponding path program 1 times [2023-12-20 18:22:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:22:50,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434908240] [2023-12-20 18:22:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:22:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:22:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat