/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:50:32,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:50:32,964 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 03:50:32,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:50:32,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:50:32,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:50:32,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:50:32,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:50:32,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:50:32,984 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:50:32,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:50:32,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:50:32,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:50:32,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:50:32,986 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:50:32,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:50:32,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:50:32,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:50:32,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:50:32,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:50:32,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:50:32,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:50:32,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:50:32,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:50:32,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:50:32,990 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:50:32,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:50:32,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:50:32,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:50:32,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:50:32,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:50:32,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:50:32,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:50:32,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:50:32,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:50:32,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:50:32,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:50:32,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:50:32,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:50:32,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:50:32,993 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:50:33,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:50:33,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:50:33,004 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:50:33,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:50:33,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:50:33,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:50:33,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:50:33,227 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:50:33,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:50:34,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:50:34,414 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:50:34,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:50:34,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d3283e8/f2fb8970d23a44518398dcb684374e0f/FLAGc6844b9c3 [2023-12-20 03:50:34,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d3283e8/f2fb8970d23a44518398dcb684374e0f [2023-12-20 03:50:34,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:50:34,441 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:50:34,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:50:34,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:50:34,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:50:34,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:34,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c28198b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34, skipping insertion in model container [2023-12-20 03:50:34,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:34,500 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:50:34,709 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2023-12-20 03:50:34,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:50:34,805 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:50:34,860 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2023-12-20 03:50:34,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:50:34,911 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:50:34,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34 WrapperNode [2023-12-20 03:50:34,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:50:34,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:50:34,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:50:34,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:50:34,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:34,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:34,990 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1431 [2023-12-20 03:50:34,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:50:34,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:50:34,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:50:34,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:50:35,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,033 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 03:50:35,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:50:35,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:50:35,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:50:35,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:50:35,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (1/1) ... [2023-12-20 03:50:35,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:50:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:50:35,147 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 03:50:35,160 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 03:50:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:50:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:50:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:50:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:50:35,316 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:50:35,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:50:36,096 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:50:36,138 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:50:36,138 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:50:36,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:50:36 BoogieIcfgContainer [2023-12-20 03:50:36,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:50:36,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:50:36,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:50:36,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:50:36,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:50:34" (1/3) ... [2023-12-20 03:50:36,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c02969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:50:36, skipping insertion in model container [2023-12-20 03:50:36,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:50:34" (2/3) ... [2023-12-20 03:50:36,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c02969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:50:36, skipping insertion in model container [2023-12-20 03:50:36,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:50:36" (3/3) ... [2023-12-20 03:50:36,145 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:50:36,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:50:36,157 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:50:36,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:50:36,229 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;@5858c62a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:50:36,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:50:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 346 states have (on average 1.7919075144508672) internal successors, (620), 347 states have internal predecessors, (620), 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 03:50:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 03:50:36,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:36,266 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] [2023-12-20 03:50:36,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:36,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1104503108, now seen corresponding path program 1 times [2023-12-20 03:50:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643449298] [2023-12-20 03:50:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:36,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:36,685 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 03:50:36,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:36,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643449298] [2023-12-20 03:50:36,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643449298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:36,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:36,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858749139] [2023-12-20 03:50:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:36,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:36,722 INFO L87 Difference]: Start difference. First operand has 348 states, 346 states have (on average 1.7919075144508672) internal successors, (620), 347 states have internal predecessors, (620), 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 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 03:50:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:36,817 INFO L93 Difference]: Finished difference Result 648 states and 1120 transitions. [2023-12-20 03:50:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2023-12-20 03:50:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:36,836 INFO L225 Difference]: With dead ends: 648 [2023-12-20 03:50:36,836 INFO L226 Difference]: Without dead ends: 488 [2023-12-20 03:50:36,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:36,843 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 265 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:36,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1138 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-20 03:50:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 485. [2023-12-20 03:50:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.6528925619834711) internal successors, (800), 484 states have internal predecessors, (800), 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 03:50:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 800 transitions. [2023-12-20 03:50:36,904 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 800 transitions. Word has length 117 [2023-12-20 03:50:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:36,904 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 800 transitions. [2023-12-20 03:50:36,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 03:50:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 800 transitions. [2023-12-20 03:50:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 03:50:36,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:36,906 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] [2023-12-20 03:50:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:50:36,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:36,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1038605622, now seen corresponding path program 1 times [2023-12-20 03:50:36,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:36,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172236477] [2023-12-20 03:50:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:36,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:37,100 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 03:50:37,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:37,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172236477] [2023-12-20 03:50:37,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172236477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:37,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:37,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:37,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589950579] [2023-12-20 03:50:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:37,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:37,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:37,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:37,103 INFO L87 Difference]: Start difference. First operand 485 states and 800 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 03:50:37,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:37,130 INFO L93 Difference]: Finished difference Result 1051 states and 1740 transitions. [2023-12-20 03:50:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2023-12-20 03:50:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:37,134 INFO L225 Difference]: With dead ends: 1051 [2023-12-20 03:50:37,135 INFO L226 Difference]: Without dead ends: 758 [2023-12-20 03:50:37,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:37,139 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 229 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:37,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1094 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-12-20 03:50:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2023-12-20 03:50:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.653386454183267) internal successors, (1245), 753 states have internal predecessors, (1245), 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 03:50:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1245 transitions. [2023-12-20 03:50:37,187 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1245 transitions. Word has length 120 [2023-12-20 03:50:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:37,191 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1245 transitions. [2023-12-20 03:50:37,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 03:50:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1245 transitions. [2023-12-20 03:50:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-20 03:50:37,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:37,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:50:37,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:50:37,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:37,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1045683377, now seen corresponding path program 1 times [2023-12-20 03:50:37,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:37,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983885174] [2023-12-20 03:50:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:37,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:37,304 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 03:50:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983885174] [2023-12-20 03:50:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983885174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:37,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:37,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061306126] [2023-12-20 03:50:37,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:37,306 INFO L87 Difference]: Start difference. First operand 754 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 03:50:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:37,332 INFO L93 Difference]: Finished difference Result 1838 states and 3039 transitions. [2023-12-20 03:50:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2023-12-20 03:50:37,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:37,339 INFO L225 Difference]: With dead ends: 1838 [2023-12-20 03:50:37,339 INFO L226 Difference]: Without dead ends: 1276 [2023-12-20 03:50:37,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:37,343 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 222 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:37,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1095 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-12-20 03:50:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1270. [2023-12-20 03:50:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 1.649330181245075) internal successors, (2093), 1269 states have internal predecessors, (2093), 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 03:50:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 2093 transitions. [2023-12-20 03:50:37,364 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 2093 transitions. Word has length 123 [2023-12-20 03:50:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:37,368 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 2093 transitions. [2023-12-20 03:50:37,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 03:50:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 2093 transitions. [2023-12-20 03:50:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-20 03:50:37,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:37,373 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] [2023-12-20 03:50:37,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:50:37,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:37,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1670401211, now seen corresponding path program 1 times [2023-12-20 03:50:37,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408038905] [2023-12-20 03:50:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:37,507 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 03:50:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408038905] [2023-12-20 03:50:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408038905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:37,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:37,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841222180] [2023-12-20 03:50:37,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:37,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:37,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:37,509 INFO L87 Difference]: Start difference. First operand 1270 states and 2093 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 03:50:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:37,542 INFO L93 Difference]: Finished difference Result 3346 states and 5511 transitions. [2023-12-20 03:50:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2023-12-20 03:50:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:37,548 INFO L225 Difference]: With dead ends: 3346 [2023-12-20 03:50:37,549 INFO L226 Difference]: Without dead ends: 2268 [2023-12-20 03:50:37,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:37,558 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 215 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:37,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1096 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2023-12-20 03:50:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2258. [2023-12-20 03:50:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2257 states have (on average 1.6415595923792645) internal successors, (3705), 2257 states have internal predecessors, (3705), 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 03:50:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 3705 transitions. [2023-12-20 03:50:37,594 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 3705 transitions. Word has length 126 [2023-12-20 03:50:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:37,594 INFO L495 AbstractCegarLoop]: Abstraction has 2258 states and 3705 transitions. [2023-12-20 03:50:37,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 03:50:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 3705 transitions. [2023-12-20 03:50:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:50:37,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:37,596 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] [2023-12-20 03:50:37,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:50:37,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:37,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1229327834, now seen corresponding path program 1 times [2023-12-20 03:50:37,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:37,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155460090] [2023-12-20 03:50:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:37,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:37,743 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 03:50:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155460090] [2023-12-20 03:50:37,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155460090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:37,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:37,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:50:37,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879935916] [2023-12-20 03:50:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:50:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:50:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:50:37,745 INFO L87 Difference]: Start difference. First operand 2258 states and 3705 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 03:50:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:37,978 INFO L93 Difference]: Finished difference Result 11838 states and 19569 transitions. [2023-12-20 03:50:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:50:37,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 129 [2023-12-20 03:50:37,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:38,006 INFO L225 Difference]: With dead ends: 11838 [2023-12-20 03:50:38,007 INFO L226 Difference]: Without dead ends: 9772 [2023-12-20 03:50:38,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:50:38,017 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 2145 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:38,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 4847 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:50:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9772 states. [2023-12-20 03:50:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9772 to 4188. [2023-12-20 03:50:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 1.6412705994745642) internal successors, (6872), 4187 states have internal predecessors, (6872), 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 03:50:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 6872 transitions. [2023-12-20 03:50:38,119 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 6872 transitions. Word has length 129 [2023-12-20 03:50:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:38,120 INFO L495 AbstractCegarLoop]: Abstraction has 4188 states and 6872 transitions. [2023-12-20 03:50:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 03:50:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 6872 transitions. [2023-12-20 03:50:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 03:50:38,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:38,123 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] [2023-12-20 03:50:38,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:50:38,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:38,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash 478480816, now seen corresponding path program 1 times [2023-12-20 03:50:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:38,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421244896] [2023-12-20 03:50:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:38,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:38,254 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 03:50:38,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:38,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421244896] [2023-12-20 03:50:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421244896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:38,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:38,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:50:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951746862] [2023-12-20 03:50:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:38,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:50:38,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:38,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:50:38,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:50:38,256 INFO L87 Difference]: Start difference. First operand 4188 states and 6872 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 03:50:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:38,337 INFO L93 Difference]: Finished difference Result 12286 states and 20260 transitions. [2023-12-20 03:50:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:50:38,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 130 [2023-12-20 03:50:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:38,376 INFO L225 Difference]: With dead ends: 12286 [2023-12-20 03:50:38,376 INFO L226 Difference]: Without dead ends: 8290 [2023-12-20 03:50:38,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:50:38,385 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 754 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:38,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1711 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8290 states. [2023-12-20 03:50:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8290 to 6222. [2023-12-20 03:50:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 1.6436264266195146) internal successors, (10225), 6221 states have internal predecessors, (10225), 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 03:50:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 10225 transitions. [2023-12-20 03:50:38,518 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 10225 transitions. Word has length 130 [2023-12-20 03:50:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:38,518 INFO L495 AbstractCegarLoop]: Abstraction has 6222 states and 10225 transitions. [2023-12-20 03:50:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 03:50:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 10225 transitions. [2023-12-20 03:50:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 03:50:38,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:38,521 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] [2023-12-20 03:50:38,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:50:38,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:38,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1885499437, now seen corresponding path program 1 times [2023-12-20 03:50:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453116475] [2023-12-20 03:50:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:38,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:38,619 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 03:50:38,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453116475] [2023-12-20 03:50:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453116475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:38,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:38,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:50:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553767568] [2023-12-20 03:50:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:50:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:50:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:50:38,621 INFO L87 Difference]: Start difference. First operand 6222 states and 10225 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 03:50:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:38,710 INFO L93 Difference]: Finished difference Result 18284 states and 30120 transitions. [2023-12-20 03:50:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:50:38,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 131 [2023-12-20 03:50:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:38,730 INFO L225 Difference]: With dead ends: 18284 [2023-12-20 03:50:38,730 INFO L226 Difference]: Without dead ends: 12254 [2023-12-20 03:50:38,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:50:38,740 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 752 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:38,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1772 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2023-12-20 03:50:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 9214. [2023-12-20 03:50:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9214 states, 9213 states have (on average 1.6419190274611961) internal successors, (15127), 9213 states have internal predecessors, (15127), 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 03:50:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9214 states to 9214 states and 15127 transitions. [2023-12-20 03:50:38,898 INFO L78 Accepts]: Start accepts. Automaton has 9214 states and 15127 transitions. Word has length 131 [2023-12-20 03:50:38,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:38,898 INFO L495 AbstractCegarLoop]: Abstraction has 9214 states and 15127 transitions. [2023-12-20 03:50:38,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 03:50:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9214 states and 15127 transitions. [2023-12-20 03:50:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 03:50:38,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:38,901 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] [2023-12-20 03:50:38,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:50:38,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:38,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:38,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1737005545, now seen corresponding path program 1 times [2023-12-20 03:50:38,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:38,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614074927] [2023-12-20 03:50:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:38,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:39,011 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 03:50:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:39,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614074927] [2023-12-20 03:50:39,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614074927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:39,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:39,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:50:39,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385702088] [2023-12-20 03:50:39,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:39,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:50:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:39,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:50:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:50:39,013 INFO L87 Difference]: Start difference. First operand 9214 states and 15127 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 03:50:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:39,134 INFO L93 Difference]: Finished difference Result 27108 states and 44608 transitions. [2023-12-20 03:50:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:50:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2023-12-20 03:50:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:39,163 INFO L225 Difference]: With dead ends: 27108 [2023-12-20 03:50:39,164 INFO L226 Difference]: Without dead ends: 18086 [2023-12-20 03:50:39,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:50:39,179 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 750 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:39,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1894 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18086 states. [2023-12-20 03:50:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18086 to 13616. [2023-12-20 03:50:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13616 states, 13615 states have (on average 1.6401762761659935) internal successors, (22331), 13615 states have internal predecessors, (22331), 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 03:50:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13616 states to 13616 states and 22331 transitions. [2023-12-20 03:50:39,489 INFO L78 Accepts]: Start accepts. Automaton has 13616 states and 22331 transitions. Word has length 132 [2023-12-20 03:50:39,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:39,489 INFO L495 AbstractCegarLoop]: Abstraction has 13616 states and 22331 transitions. [2023-12-20 03:50:39,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 03:50:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13616 states and 22331 transitions. [2023-12-20 03:50:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:50:39,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:39,494 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] [2023-12-20 03:50:39,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:50:39,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:39,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -463645793, now seen corresponding path program 1 times [2023-12-20 03:50:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769526140] [2023-12-20 03:50:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:39,607 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 03:50:39,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:39,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769526140] [2023-12-20 03:50:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769526140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:39,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:39,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:39,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388275263] [2023-12-20 03:50:39,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:39,610 INFO L87 Difference]: Start difference. First operand 13616 states and 22331 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:39,697 INFO L93 Difference]: Finished difference Result 30204 states and 49578 transitions. [2023-12-20 03:50:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2023-12-20 03:50:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:39,729 INFO L225 Difference]: With dead ends: 30204 [2023-12-20 03:50:39,730 INFO L226 Difference]: Without dead ends: 20858 [2023-12-20 03:50:39,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:39,746 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 228 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:39,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1241 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20858 states. [2023-12-20 03:50:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20858 to 20856. [2023-12-20 03:50:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20856 states, 20855 states have (on average 1.6355789978422441) internal successors, (34110), 20855 states have internal predecessors, (34110), 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 03:50:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20856 states to 20856 states and 34110 transitions. [2023-12-20 03:50:40,077 INFO L78 Accepts]: Start accepts. Automaton has 20856 states and 34110 transitions. Word has length 133 [2023-12-20 03:50:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:40,077 INFO L495 AbstractCegarLoop]: Abstraction has 20856 states and 34110 transitions. [2023-12-20 03:50:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 20856 states and 34110 transitions. [2023-12-20 03:50:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:50:40,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:40,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:50:40,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:50:40,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:40,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1410705485, now seen corresponding path program 1 times [2023-12-20 03:50:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:40,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038796717] [2023-12-20 03:50:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:40,152 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 03:50:40,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038796717] [2023-12-20 03:50:40,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038796717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:40,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:40,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:40,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29092513] [2023-12-20 03:50:40,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:40,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:40,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:40,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:40,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:40,154 INFO L87 Difference]: Start difference. First operand 20856 states and 34110 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:40,421 INFO L93 Difference]: Finished difference Result 46074 states and 75424 transitions. [2023-12-20 03:50:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2023-12-20 03:50:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:40,487 INFO L225 Difference]: With dead ends: 46074 [2023-12-20 03:50:40,487 INFO L226 Difference]: Without dead ends: 31710 [2023-12-20 03:50:40,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:40,508 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 221 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:40,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1208 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31710 states. [2023-12-20 03:50:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31710 to 31708. [2023-12-20 03:50:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31708 states, 31707 states have (on average 1.6303024568707225) internal successors, (51692), 31707 states have internal predecessors, (51692), 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 03:50:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31708 states to 31708 states and 51692 transitions. [2023-12-20 03:50:40,944 INFO L78 Accepts]: Start accepts. Automaton has 31708 states and 51692 transitions. Word has length 133 [2023-12-20 03:50:40,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:40,944 INFO L495 AbstractCegarLoop]: Abstraction has 31708 states and 51692 transitions. [2023-12-20 03:50:40,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 31708 states and 51692 transitions. [2023-12-20 03:50:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:50:40,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:40,948 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] [2023-12-20 03:50:40,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:50:40,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:40,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash -641806061, now seen corresponding path program 1 times [2023-12-20 03:50:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774244251] [2023-12-20 03:50:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:41,145 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 03:50:41,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:41,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774244251] [2023-12-20 03:50:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774244251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:41,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:41,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:41,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256968027] [2023-12-20 03:50:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:41,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:41,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:41,146 INFO L87 Difference]: Start difference. First operand 31708 states and 51692 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:41,339 INFO L93 Difference]: Finished difference Result 61884 states and 101018 transitions. [2023-12-20 03:50:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:41,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2023-12-20 03:50:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:41,550 INFO L225 Difference]: With dead ends: 61884 [2023-12-20 03:50:41,551 INFO L226 Difference]: Without dead ends: 44438 [2023-12-20 03:50:41,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:41,571 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 214 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:41,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44438 states. [2023-12-20 03:50:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44438 to 44436. [2023-12-20 03:50:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44436 states, 44435 states have (on average 1.6252503657027118) internal successors, (72218), 44435 states have internal predecessors, (72218), 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 03:50:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44436 states to 44436 states and 72218 transitions. [2023-12-20 03:50:42,204 INFO L78 Accepts]: Start accepts. Automaton has 44436 states and 72218 transitions. Word has length 133 [2023-12-20 03:50:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:42,204 INFO L495 AbstractCegarLoop]: Abstraction has 44436 states and 72218 transitions. [2023-12-20 03:50:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 44436 states and 72218 transitions. [2023-12-20 03:50:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:50:42,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:42,206 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] [2023-12-20 03:50:42,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:50:42,206 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:42,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1934015028, now seen corresponding path program 1 times [2023-12-20 03:50:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478135288] [2023-12-20 03:50:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:42,293 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 03:50:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478135288] [2023-12-20 03:50:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478135288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:42,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:50:42,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472301434] [2023-12-20 03:50:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:42,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:50:42,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:50:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:50:42,295 INFO L87 Difference]: Start difference. First operand 44436 states and 72218 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 03:50:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:42,911 INFO L93 Difference]: Finished difference Result 141592 states and 230509 transitions. [2023-12-20 03:50:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:50:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 133 [2023-12-20 03:50:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:43,143 INFO L225 Difference]: With dead ends: 141592 [2023-12-20 03:50:43,143 INFO L226 Difference]: Without dead ends: 97568 [2023-12-20 03:50:43,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:50:43,188 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 748 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:43,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1896 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97568 states. [2023-12-20 03:50:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97568 to 70868. [2023-12-20 03:50:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70868 states, 70867 states have (on average 1.6216010272764474) internal successors, (114918), 70867 states have internal predecessors, (114918), 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 03:50:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70868 states to 70868 states and 114918 transitions. [2023-12-20 03:50:44,319 INFO L78 Accepts]: Start accepts. Automaton has 70868 states and 114918 transitions. Word has length 133 [2023-12-20 03:50:44,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:44,319 INFO L495 AbstractCegarLoop]: Abstraction has 70868 states and 114918 transitions. [2023-12-20 03:50:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 03:50:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 70868 states and 114918 transitions. [2023-12-20 03:50:44,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:50:44,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:44,321 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] [2023-12-20 03:50:44,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:50:44,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:44,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:44,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1383459367, now seen corresponding path program 1 times [2023-12-20 03:50:44,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:44,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265950418] [2023-12-20 03:50:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:44,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:44,390 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 03:50:44,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265950418] [2023-12-20 03:50:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265950418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:44,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:44,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:50:44,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233880022] [2023-12-20 03:50:44,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:44,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:50:44,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:50:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:50:44,392 INFO L87 Difference]: Start difference. First operand 70868 states and 114918 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:45,138 INFO L93 Difference]: Finished difference Result 156081 states and 254328 transitions. [2023-12-20 03:50:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:50:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2023-12-20 03:50:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:45,347 INFO L225 Difference]: With dead ends: 156081 [2023-12-20 03:50:45,347 INFO L226 Difference]: Without dead ends: 105866 [2023-12-20 03:50:45,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:50:45,389 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 235 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:45,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1287 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105866 states. [2023-12-20 03:50:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105866 to 105864. [2023-12-20 03:50:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105864 states, 105863 states have (on average 1.618771431000444) internal successors, (171368), 105863 states have internal predecessors, (171368), 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 03:50:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105864 states to 105864 states and 171368 transitions. [2023-12-20 03:50:46,802 INFO L78 Accepts]: Start accepts. Automaton has 105864 states and 171368 transitions. Word has length 133 [2023-12-20 03:50:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:46,802 INFO L495 AbstractCegarLoop]: Abstraction has 105864 states and 171368 transitions. [2023-12-20 03:50:46,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 03:50:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 105864 states and 171368 transitions. [2023-12-20 03:50:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 03:50:46,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:46,804 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] [2023-12-20 03:50:46,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:50:46,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:46,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1645265701, now seen corresponding path program 1 times [2023-12-20 03:50:46,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110833971] [2023-12-20 03:50:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:46,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:50:47,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:47,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110833971] [2023-12-20 03:50:47,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110833971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:47,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:47,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:50:47,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266737008] [2023-12-20 03:50:47,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:47,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:50:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:50:47,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:50:47,233 INFO L87 Difference]: Start difference. First operand 105864 states and 171368 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 03:50:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:48,062 INFO L93 Difference]: Finished difference Result 211470 states and 342321 transitions. [2023-12-20 03:50:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:50:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 135 [2023-12-20 03:50:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:48,238 INFO L225 Difference]: With dead ends: 211470 [2023-12-20 03:50:48,239 INFO L226 Difference]: Without dead ends: 105866 [2023-12-20 03:50:48,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:50:48,297 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 220 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:48,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2706 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105866 states. [2023-12-20 03:50:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105866 to 105864. [2023-12-20 03:50:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105864 states, 105863 states have (on average 1.612867574128827) internal successors, (170743), 105863 states have internal predecessors, (170743), 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 03:50:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105864 states to 105864 states and 170743 transitions. [2023-12-20 03:50:49,850 INFO L78 Accepts]: Start accepts. Automaton has 105864 states and 170743 transitions. Word has length 135 [2023-12-20 03:50:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:49,850 INFO L495 AbstractCegarLoop]: Abstraction has 105864 states and 170743 transitions. [2023-12-20 03:50:49,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 03:50:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 105864 states and 170743 transitions. [2023-12-20 03:50:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 03:50:49,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:49,852 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] [2023-12-20 03:50:49,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:50:49,852 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:49,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2104616215, now seen corresponding path program 1 times [2023-12-20 03:50:49,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:49,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377450823] [2023-12-20 03:50:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:50,055 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 03:50:50,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377450823] [2023-12-20 03:50:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377450823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:50,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:50:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451710977] [2023-12-20 03:50:50,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:50:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:50:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:50:50,057 INFO L87 Difference]: Start difference. First operand 105864 states and 170743 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 03:50:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:51,264 INFO L93 Difference]: Finished difference Result 309468 states and 499581 transitions. [2023-12-20 03:50:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:50:51,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 138 [2023-12-20 03:50:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:51,597 INFO L225 Difference]: With dead ends: 309468 [2023-12-20 03:50:51,597 INFO L226 Difference]: Without dead ends: 203864 [2023-12-20 03:50:51,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:50:51,627 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 433 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:51,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 2182 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203864 states. [2023-12-20 03:50:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203864 to 203862. [2023-12-20 03:50:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203862 states, 203861 states have (on average 1.6051917728256018) internal successors, (327236), 203861 states have internal predecessors, (327236), 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 03:50:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203862 states to 203862 states and 327236 transitions. [2023-12-20 03:50:54,318 INFO L78 Accepts]: Start accepts. Automaton has 203862 states and 327236 transitions. Word has length 138 [2023-12-20 03:50:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:54,319 INFO L495 AbstractCegarLoop]: Abstraction has 203862 states and 327236 transitions. [2023-12-20 03:50:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 03:50:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 203862 states and 327236 transitions. [2023-12-20 03:50:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 03:50:54,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:54,320 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] [2023-12-20 03:50:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:50:54,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:54,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash -820502302, now seen corresponding path program 1 times [2023-12-20 03:50:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:54,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151589481] [2023-12-20 03:50:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:50:54,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151589481] [2023-12-20 03:50:54,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151589481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:54,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:54,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:50:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435425447] [2023-12-20 03:50:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:50:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:50:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:50:54,938 INFO L87 Difference]: Start difference. First operand 203862 states and 327236 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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 03:50:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:56,183 INFO L93 Difference]: Finished difference Result 386615 states and 618750 transitions. [2023-12-20 03:50:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:50:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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 139 [2023-12-20 03:50:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:57,128 INFO L225 Difference]: With dead ends: 386615 [2023-12-20 03:50:57,128 INFO L226 Difference]: Without dead ends: 386613 [2023-12-20 03:50:57,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:50:57,179 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 486 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:57,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 2579 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:50:57,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386613 states. [2023-12-20 03:51:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386613 to 207734. [2023-12-20 03:51:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207734 states, 207733 states have (on average 1.5937814405992308) internal successors, (331081), 207733 states have internal predecessors, (331081), 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 03:51:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207734 states to 207734 states and 331081 transitions. [2023-12-20 03:51:00,966 INFO L78 Accepts]: Start accepts. Automaton has 207734 states and 331081 transitions. Word has length 139 [2023-12-20 03:51:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:00,967 INFO L495 AbstractCegarLoop]: Abstraction has 207734 states and 331081 transitions. [2023-12-20 03:51:00,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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 03:51:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 207734 states and 331081 transitions. [2023-12-20 03:51:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:51:00,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:00,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:51:00,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:00,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1542140681, now seen corresponding path program 1 times [2023-12-20 03:51:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:00,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426253788] [2023-12-20 03:51:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:51:01,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426253788] [2023-12-20 03:51:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426253788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:01,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:01,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:51:01,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556440692] [2023-12-20 03:51:01,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:01,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:51:01,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:51:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:51:01,541 INFO L87 Difference]: Start difference. First operand 207734 states and 331081 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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 03:51:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:03,693 INFO L93 Difference]: Finished difference Result 565656 states and 903742 transitions. [2023-12-20 03:51:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:51:03,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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 175 [2023-12-20 03:51:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:04,655 INFO L225 Difference]: With dead ends: 565656 [2023-12-20 03:51:04,655 INFO L226 Difference]: Without dead ends: 474404 [2023-12-20 03:51:04,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:51:04,782 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1501 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:04,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 3479 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:51:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474404 states. [2023-12-20 03:51:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474404 to 333614. [2023-12-20 03:51:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333614 states, 333613 states have (on average 1.592249103002581) internal successors, (531195), 333613 states have internal predecessors, (531195), 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 03:51:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333614 states to 333614 states and 531195 transitions. [2023-12-20 03:51:11,195 INFO L78 Accepts]: Start accepts. Automaton has 333614 states and 531195 transitions. Word has length 175 [2023-12-20 03:51:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:11,196 INFO L495 AbstractCegarLoop]: Abstraction has 333614 states and 531195 transitions. [2023-12-20 03:51:11,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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 03:51:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 333614 states and 531195 transitions. [2023-12-20 03:51:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:51:11,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:11,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:11,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:51:11,201 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:11,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1805766923, now seen corresponding path program 1 times [2023-12-20 03:51:11,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:11,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905424396] [2023-12-20 03:51:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 03:51:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:11,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905424396] [2023-12-20 03:51:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905424396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:51:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552824536] [2023-12-20 03:51:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:11,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:51:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:51:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:51:11,443 INFO L87 Difference]: Start difference. First operand 333614 states and 531195 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 03:51:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:14,484 INFO L93 Difference]: Finished difference Result 623672 states and 996666 transitions. [2023-12-20 03:51:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:51:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 175 [2023-12-20 03:51:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:15,749 INFO L225 Difference]: With dead ends: 623672 [2023-12-20 03:51:15,749 INFO L226 Difference]: Without dead ends: 532420 [2023-12-20 03:51:15,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:51:15,888 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1608 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:15,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 3301 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:51:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532420 states. [2023-12-20 03:51:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532420 to 450824. [2023-12-20 03:51:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450824 states, 450823 states have (on average 1.592982168167995) internal successors, (718153), 450823 states have internal predecessors, (718153), 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 03:51:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450824 states to 450824 states and 718153 transitions. [2023-12-20 03:51:22,947 INFO L78 Accepts]: Start accepts. Automaton has 450824 states and 718153 transitions. Word has length 175 [2023-12-20 03:51:22,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:22,947 INFO L495 AbstractCegarLoop]: Abstraction has 450824 states and 718153 transitions. [2023-12-20 03:51:22,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 03:51:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 450824 states and 718153 transitions. [2023-12-20 03:51:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:51:22,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:22,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:22,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:51:22,951 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:22,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1720300949, now seen corresponding path program 1 times [2023-12-20 03:51:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57981068] [2023-12-20 03:51:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 03:51:23,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57981068] [2023-12-20 03:51:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57981068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:51:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828619697] [2023-12-20 03:51:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:51:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:51:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:51:23,093 INFO L87 Difference]: Start difference. First operand 450824 states and 718153 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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 03:51:25,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:25,723 INFO L93 Difference]: Finished difference Result 659852 states and 1054526 transitions. [2023-12-20 03:51:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:51:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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 175 [2023-12-20 03:51:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:26,789 INFO L225 Difference]: With dead ends: 659852 [2023-12-20 03:51:26,790 INFO L226 Difference]: Without dead ends: 568600 [2023-12-20 03:51:26,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:51:26,860 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 1523 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:26,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 3145 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:51:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568600 states. [2023-12-20 03:51:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568600 to 522184. [2023-12-20 03:51:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522184 states, 522183 states have (on average 1.594193989463464) internal successors, (832461), 522183 states have internal predecessors, (832461), 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 03:51:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522184 states to 522184 states and 832461 transitions. [2023-12-20 03:51:36,091 INFO L78 Accepts]: Start accepts. Automaton has 522184 states and 832461 transitions. Word has length 175 [2023-12-20 03:51:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:36,108 INFO L495 AbstractCegarLoop]: Abstraction has 522184 states and 832461 transitions. [2023-12-20 03:51:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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 03:51:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 522184 states and 832461 transitions. [2023-12-20 03:51:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:51:36,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:36,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:51:36,122 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:36,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash 304964479, now seen corresponding path program 1 times [2023-12-20 03:51:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:36,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243440271] [2023-12-20 03:51:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:51:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:36,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243440271] [2023-12-20 03:51:36,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243440271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:36,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:36,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:51:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932358773] [2023-12-20 03:51:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:51:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:51:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:51:36,310 INFO L87 Difference]: Start difference. First operand 522184 states and 832461 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 03:51:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:39,524 INFO L93 Difference]: Finished difference Result 733098 states and 1172442 transitions. [2023-12-20 03:51:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:51:39,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 175 [2023-12-20 03:51:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:40,788 INFO L225 Difference]: With dead ends: 733098 [2023-12-20 03:51:40,788 INFO L226 Difference]: Without dead ends: 640696 [2023-12-20 03:51:40,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:51:40,921 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1498 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:40,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 3685 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:51:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640696 states. [2023-12-20 03:51:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640696 to 594280. [2023-12-20 03:51:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594280 states, 594279 states have (on average 1.59550817040481) internal successors, (948177), 594279 states have internal predecessors, (948177), 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 03:51:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594280 states to 594280 states and 948177 transitions. [2023-12-20 03:51:51,295 INFO L78 Accepts]: Start accepts. Automaton has 594280 states and 948177 transitions. Word has length 175 [2023-12-20 03:51:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:51,295 INFO L495 AbstractCegarLoop]: Abstraction has 594280 states and 948177 transitions. [2023-12-20 03:51:51,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 03:51:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 594280 states and 948177 transitions. [2023-12-20 03:51:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 03:51:51,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:51,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:51:51,300 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:51,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -680957327, now seen corresponding path program 1 times [2023-12-20 03:51:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349438927] [2023-12-20 03:51:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:51:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349438927] [2023-12-20 03:51:51,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349438927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:51,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:51,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:51:51,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488905416] [2023-12-20 03:51:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:51,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:51:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:51:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:51:51,431 INFO L87 Difference]: Start difference. First operand 594280 states and 948177 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 03:51:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:56,988 INFO L93 Difference]: Finished difference Result 1262328 states and 2019246 transitions. [2023-12-20 03:51:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:51:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 176 [2023-12-20 03:51:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:59,119 INFO L225 Difference]: With dead ends: 1262328 [2023-12-20 03:51:59,120 INFO L226 Difference]: Without dead ends: 941710 [2023-12-20 03:51:59,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:51:59,357 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 205 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:59,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1083 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:52:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941710 states. [2023-12-20 03:52:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941710 to 940439. [2023-12-20 03:52:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940439 states, 940438 states have (on average 1.5966751662523206) internal successors, (1501574), 940438 states have internal predecessors, (1501574), 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 03:52:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940439 states to 940439 states and 1501574 transitions. [2023-12-20 03:52:16,984 INFO L78 Accepts]: Start accepts. Automaton has 940439 states and 1501574 transitions. Word has length 176 [2023-12-20 03:52:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:16,984 INFO L495 AbstractCegarLoop]: Abstraction has 940439 states and 1501574 transitions. [2023-12-20 03:52:16,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 03:52:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 940439 states and 1501574 transitions. [2023-12-20 03:52:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 03:52:16,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:16,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:16,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:52:16,990 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:16,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 796902263, now seen corresponding path program 1 times [2023-12-20 03:52:16,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560597017] [2023-12-20 03:52:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:16,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:52:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560597017] [2023-12-20 03:52:17,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560597017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:17,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:17,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:52:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721295694] [2023-12-20 03:52:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:17,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:52:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:52:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:52:17,155 INFO L87 Difference]: Start difference. First operand 940439 states and 1501574 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 03:52:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:24,591 INFO L93 Difference]: Finished difference Result 1578678 states and 2525571 transitions. [2023-12-20 03:52:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:52:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 176 [2023-12-20 03:52:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:28,782 INFO L225 Difference]: With dead ends: 1578678 [2023-12-20 03:52:28,782 INFO L226 Difference]: Without dead ends: 1250130 [2023-12-20 03:52:29,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:52:29,387 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 438 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:29,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1916 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:52:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250130 states. [2023-12-20 03:52:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250130 to 1185755. [2023-12-20 03:52:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185755 states, 1185754 states have (on average 1.595466681959327) internal successors, (1891831), 1185754 states have internal predecessors, (1891831), 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 03:52:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185755 states to 1185755 states and 1891831 transitions. [2023-12-20 03:52:52,872 INFO L78 Accepts]: Start accepts. Automaton has 1185755 states and 1891831 transitions. Word has length 176 [2023-12-20 03:52:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:52,873 INFO L495 AbstractCegarLoop]: Abstraction has 1185755 states and 1891831 transitions. [2023-12-20 03:52:52,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 03:52:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1185755 states and 1891831 transitions. [2023-12-20 03:52:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 03:52:52,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:52,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:52,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:52:52,879 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:52,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 992566379, now seen corresponding path program 1 times [2023-12-20 03:52:52,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:52,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541772440] [2023-12-20 03:52:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:52:53,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541772440] [2023-12-20 03:52:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541772440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:53,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:53,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:52:53,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994729201] [2023-12-20 03:52:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:53,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:52:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:52:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:52:53,065 INFO L87 Difference]: Start difference. First operand 1185755 states and 1891831 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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)