/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/pals_floodmax.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:59:29,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:59:30,044 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 00:59:30,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:59:30,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:59:30,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:59:30,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:59:30,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:59:30,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:59:30,065 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:59:30,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:59:30,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:59:30,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:59:30,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:59:30,067 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:59:30,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:59:30,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:59:30,067 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:59:30,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:59:30,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:59:30,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:59:30,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:59:30,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:59:30,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:59:30,069 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:59:30,070 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:59:30,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:59:30,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:59:30,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:59:30,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:59:30,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:59:30,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:59:30,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:59:30,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:59:30,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:59:30,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:59:30,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:59:30,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:59:30,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:59:30,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:59:30,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:59:30,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:59:30,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:59:30,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:59:30,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:59:30,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:59:30,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:59:30,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:59:30,242 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:59:30,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-12-20 00:59:31,269 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:59:31,519 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:59:31,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-12-20 00:59:31,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e96a7dfa/a1c1d751ca624105a43c3da99dbd31b5/FLAGe1d6d608a [2023-12-20 00:59:31,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e96a7dfa/a1c1d751ca624105a43c3da99dbd31b5 [2023-12-20 00:59:31,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:59:31,576 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:59:31,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:59:31,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:59:31,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:59:31,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:59:31" (1/1) ... [2023-12-20 00:59:31,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337e38a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:31, skipping insertion in model container [2023-12-20 00:59:31,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:59:31" (1/1) ... [2023-12-20 00:59:31,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:59:31,940 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/pals_floodmax.5.ufo.BOUNDED-10.pals.c[60915,60928] [2023-12-20 00:59:31,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:59:31,953 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:59:32,027 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/pals_floodmax.5.ufo.BOUNDED-10.pals.c[60915,60928] [2023-12-20 00:59:32,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:59:32,043 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:59:32,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32 WrapperNode [2023-12-20 00:59:32,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:59:32,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:59:32,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:59:32,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:59:32,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,152 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2025 [2023-12-20 00:59:32,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:59:32,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:59:32,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:59:32,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:59:32,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,216 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 00:59:32,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:59:32,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:59:32,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:59:32,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:59:32,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (1/1) ... [2023-12-20 00:59:32,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:59:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:59:32,334 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 00:59:32,337 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 00:59:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:59:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:59:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:59:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:59:32,495 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:59:32,496 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:59:33,714 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:59:33,762 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:59:33,763 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 00:59:33,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:59:33 BoogieIcfgContainer [2023-12-20 00:59:33,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:59:33,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:59:33,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:59:33,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:59:33,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:59:31" (1/3) ... [2023-12-20 00:59:33,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c01ce7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:59:33, skipping insertion in model container [2023-12-20 00:59:33,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:32" (2/3) ... [2023-12-20 00:59:33,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c01ce7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:59:33, skipping insertion in model container [2023-12-20 00:59:33,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:59:33" (3/3) ... [2023-12-20 00:59:33,769 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-12-20 00:59:33,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:59:33,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:59:33,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:59:33,839 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;@76d87224, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:59:33,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:59:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 661 states, 659 states have (on average 1.8786039453717753) internal successors, (1238), 660 states have internal predecessors, (1238), 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 00:59:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 00:59:33,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:33,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:33,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:33,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1749920930, now seen corresponding path program 1 times [2023-12-20 00:59:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985014396] [2023-12-20 00:59:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:34,260 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 00:59:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985014396] [2023-12-20 00:59:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985014396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:34,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 00:59:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458427443] [2023-12-20 00:59:34,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 00:59:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 00:59:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:59:34,296 INFO L87 Difference]: Start difference. First operand has 661 states, 659 states have (on average 1.8786039453717753) internal successors, (1238), 660 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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 00:59:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:34,360 INFO L93 Difference]: Finished difference Result 779 states and 1452 transitions. [2023-12-20 00:59:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 00:59:34,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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 150 [2023-12-20 00:59:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:34,374 INFO L225 Difference]: With dead ends: 779 [2023-12-20 00:59:34,375 INFO L226 Difference]: Without dead ends: 659 [2023-12-20 00:59:34,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:59:34,380 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:34,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1231 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-20 00:59:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-12-20 00:59:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.8738601823708207) internal successors, (1233), 658 states have internal predecessors, (1233), 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 00:59:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1233 transitions. [2023-12-20 00:59:34,449 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1233 transitions. Word has length 150 [2023-12-20 00:59:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:34,450 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1233 transitions. [2023-12-20 00:59:34,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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 00:59:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1233 transitions. [2023-12-20 00:59:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 00:59:34,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:34,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:59:34,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:34,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash -621818332, now seen corresponding path program 1 times [2023-12-20 00:59:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003108848] [2023-12-20 00:59:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:59:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003108848] [2023-12-20 00:59:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003108848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:34,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:59:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138225588] [2023-12-20 00:59:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:34,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:59:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:59:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:59:34,812 INFO L87 Difference]: Start difference. First operand 659 states and 1233 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 00:59:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:34,907 INFO L93 Difference]: Finished difference Result 777 states and 1445 transitions. [2023-12-20 00:59:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:59:34,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 150 [2023-12-20 00:59:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:34,914 INFO L225 Difference]: With dead ends: 777 [2023-12-20 00:59:34,914 INFO L226 Difference]: Without dead ends: 659 [2023-12-20 00:59:34,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:59:34,916 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 0 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:34,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3627 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:59:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-20 00:59:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-12-20 00:59:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.7826747720364742) internal successors, (1173), 658 states have internal predecessors, (1173), 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 00:59:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1173 transitions. [2023-12-20 00:59:34,936 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1173 transitions. Word has length 150 [2023-12-20 00:59:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:34,936 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1173 transitions. [2023-12-20 00:59:34,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 00:59:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1173 transitions. [2023-12-20 00:59:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 00:59:34,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:34,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:34,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:59:34,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:34,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:34,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1957353913, now seen corresponding path program 1 times [2023-12-20 00:59:34,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9945593] [2023-12-20 00:59:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:34,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:35,131 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 00:59:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9945593] [2023-12-20 00:59:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9945593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:35,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190668324] [2023-12-20 00:59:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:35,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:35,138 INFO L87 Difference]: Start difference. First operand 659 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 00:59:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:35,176 INFO L93 Difference]: Finished difference Result 876 states and 1566 transitions. [2023-12-20 00:59:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 209 [2023-12-20 00:59:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:35,181 INFO L225 Difference]: With dead ends: 876 [2023-12-20 00:59:35,181 INFO L226 Difference]: Without dead ends: 761 [2023-12-20 00:59:35,184 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 00:59:35,186 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 176 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:35,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2279 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-12-20 00:59:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 759. [2023-12-20 00:59:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.7823218997361479) internal successors, (1351), 758 states have internal predecessors, (1351), 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 00:59:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1351 transitions. [2023-12-20 00:59:35,203 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1351 transitions. Word has length 209 [2023-12-20 00:59:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:35,206 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1351 transitions. [2023-12-20 00:59:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 00:59:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1351 transitions. [2023-12-20 00:59:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-20 00:59:35,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:35,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:35,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:59:35,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:35,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1276000645, now seen corresponding path program 1 times [2023-12-20 00:59:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693077730] [2023-12-20 00:59:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:35,429 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 00:59:35,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693077730] [2023-12-20 00:59:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693077730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:35,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:35,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292006139] [2023-12-20 00:59:35,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:35,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:35,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:35,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:35,431 INFO L87 Difference]: Start difference. First operand 759 states and 1351 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 00:59:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:35,466 INFO L93 Difference]: Finished difference Result 1167 states and 2083 transitions. [2023-12-20 00:59:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 213 [2023-12-20 00:59:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:35,470 INFO L225 Difference]: With dead ends: 1167 [2023-12-20 00:59:35,470 INFO L226 Difference]: Without dead ends: 952 [2023-12-20 00:59:35,471 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 00:59:35,476 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 176 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:35,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2287 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-20 00:59:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 950. [2023-12-20 00:59:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 1.7839831401475237) internal successors, (1693), 949 states have internal predecessors, (1693), 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 00:59:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1693 transitions. [2023-12-20 00:59:35,500 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1693 transitions. Word has length 213 [2023-12-20 00:59:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:35,501 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1693 transitions. [2023-12-20 00:59:35,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 00:59:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1693 transitions. [2023-12-20 00:59:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-20 00:59:35,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:35,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:35,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:59:35,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:35,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash -352904147, now seen corresponding path program 1 times [2023-12-20 00:59:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517182155] [2023-12-20 00:59:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:35,674 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 00:59:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517182155] [2023-12-20 00:59:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517182155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:35,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:35,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79198333] [2023-12-20 00:59:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:35,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:35,676 INFO L87 Difference]: Start difference. First operand 950 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 00:59:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:35,707 INFO L93 Difference]: Finished difference Result 1718 states and 3067 transitions. [2023-12-20 00:59:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2023-12-20 00:59:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:35,712 INFO L225 Difference]: With dead ends: 1718 [2023-12-20 00:59:35,712 INFO L226 Difference]: Without dead ends: 1312 [2023-12-20 00:59:35,713 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 00:59:35,713 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 168 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:35,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2393 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-20 00:59:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-12-20 00:59:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 1.7822765469824293) internal successors, (2333), 1309 states have internal predecessors, (2333), 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 00:59:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2333 transitions. [2023-12-20 00:59:35,738 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2333 transitions. Word has length 217 [2023-12-20 00:59:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:35,738 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2333 transitions. [2023-12-20 00:59:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 00:59:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2333 transitions. [2023-12-20 00:59:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-20 00:59:35,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:35,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:35,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:59:35,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:35,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2064663316, now seen corresponding path program 1 times [2023-12-20 00:59:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954784203] [2023-12-20 00:59:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:35,896 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 00:59:35,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:35,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954784203] [2023-12-20 00:59:35,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954784203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:35,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361068658] [2023-12-20 00:59:35,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:35,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:35,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:35,898 INFO L87 Difference]: Start difference. First operand 1310 states and 2333 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 00:59:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:35,929 INFO L93 Difference]: Finished difference Result 2119 states and 3777 transitions. [2023-12-20 00:59:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2023-12-20 00:59:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:35,934 INFO L225 Difference]: With dead ends: 2119 [2023-12-20 00:59:35,935 INFO L226 Difference]: Without dead ends: 1713 [2023-12-20 00:59:35,935 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 00:59:35,936 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 169 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:35,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2425 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2023-12-20 00:59:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1711. [2023-12-20 00:59:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 1.7771929824561403) internal successors, (3039), 1710 states have internal predecessors, (3039), 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 00:59:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 3039 transitions. [2023-12-20 00:59:35,969 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 3039 transitions. Word has length 221 [2023-12-20 00:59:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:35,970 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 3039 transitions. [2023-12-20 00:59:35,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 00:59:35,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 3039 transitions. [2023-12-20 00:59:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-20 00:59:35,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:35,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:35,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:59:35,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:35,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2134272735, now seen corresponding path program 1 times [2023-12-20 00:59:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481362289] [2023-12-20 00:59:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:36,118 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 00:59:36,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481362289] [2023-12-20 00:59:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481362289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:36,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012615512] [2023-12-20 00:59:36,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:36,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:36,120 INFO L87 Difference]: Start difference. First operand 1711 states and 3039 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 00:59:36,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:36,159 INFO L93 Difference]: Finished difference Result 3783 states and 6717 transitions. [2023-12-20 00:59:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:36,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2023-12-20 00:59:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:36,168 INFO L225 Difference]: With dead ends: 3783 [2023-12-20 00:59:36,168 INFO L226 Difference]: Without dead ends: 2681 [2023-12-20 00:59:36,170 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 00:59:36,171 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 160 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:36,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2290 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2023-12-20 00:59:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2679. [2023-12-20 00:59:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2678 states have (on average 1.7696041822255415) internal successors, (4739), 2678 states have internal predecessors, (4739), 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 00:59:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 4739 transitions. [2023-12-20 00:59:36,250 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 4739 transitions. Word has length 221 [2023-12-20 00:59:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:36,250 INFO L495 AbstractCegarLoop]: Abstraction has 2679 states and 4739 transitions. [2023-12-20 00:59:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 00:59:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 4739 transitions. [2023-12-20 00:59:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-20 00:59:36,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:36,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:36,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:59:36,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:36,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2022555757, now seen corresponding path program 1 times [2023-12-20 00:59:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:36,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13305868] [2023-12-20 00:59:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:36,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:36,402 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 00:59:36,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:36,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13305868] [2023-12-20 00:59:36,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13305868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:36,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:36,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970612685] [2023-12-20 00:59:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:36,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:36,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:36,405 INFO L87 Difference]: Start difference. First operand 2679 states and 4739 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 00:59:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:36,460 INFO L93 Difference]: Finished difference Result 6555 states and 11565 transitions. [2023-12-20 00:59:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:36,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2023-12-20 00:59:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:36,473 INFO L225 Difference]: With dead ends: 6555 [2023-12-20 00:59:36,473 INFO L226 Difference]: Without dead ends: 4485 [2023-12-20 00:59:36,478 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 00:59:36,479 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 152 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:36,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2291 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2023-12-20 00:59:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 4483. [2023-12-20 00:59:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 4482 states have (on average 1.7570281124497993) internal successors, (7875), 4482 states have internal predecessors, (7875), 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 00:59:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 7875 transitions. [2023-12-20 00:59:36,563 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 7875 transitions. Word has length 225 [2023-12-20 00:59:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:36,563 INFO L495 AbstractCegarLoop]: Abstraction has 4483 states and 7875 transitions. [2023-12-20 00:59:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 00:59:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 7875 transitions. [2023-12-20 00:59:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-20 00:59:36,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:36,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:36,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:59:36,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:36,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:36,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1471489479, now seen corresponding path program 1 times [2023-12-20 00:59:36,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:36,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851832640] [2023-12-20 00:59:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:36,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:36,840 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 00:59:36,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851832640] [2023-12-20 00:59:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851832640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:36,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:59:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453332126] [2023-12-20 00:59:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:59:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:59:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:59:36,842 INFO L87 Difference]: Start difference. First operand 4483 states and 7875 transitions. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 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 00:59:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:37,228 INFO L93 Difference]: Finished difference Result 27937 states and 49494 transitions. [2023-12-20 00:59:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 00:59:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 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 229 [2023-12-20 00:59:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:37,295 INFO L225 Difference]: With dead ends: 27937 [2023-12-20 00:59:37,295 INFO L226 Difference]: Without dead ends: 24063 [2023-12-20 00:59:37,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 00:59:37,315 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 3168 mSDsluCounter, 7089 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:37,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 8247 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:59:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24063 states. [2023-12-20 00:59:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24063 to 8234. [2023-12-20 00:59:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8234 states, 8233 states have (on average 1.7539171626381636) internal successors, (14440), 8233 states have internal predecessors, (14440), 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 00:59:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 14440 transitions. [2023-12-20 00:59:37,692 INFO L78 Accepts]: Start accepts. Automaton has 8234 states and 14440 transitions. Word has length 229 [2023-12-20 00:59:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:37,692 INFO L495 AbstractCegarLoop]: Abstraction has 8234 states and 14440 transitions. [2023-12-20 00:59:37,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 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 00:59:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8234 states and 14440 transitions. [2023-12-20 00:59:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 00:59:37,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:37,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:37,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:59:37,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:37,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1702209156, now seen corresponding path program 1 times [2023-12-20 00:59:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770941202] [2023-12-20 00:59:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:37,840 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 00:59:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770941202] [2023-12-20 00:59:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770941202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:37,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:59:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956843211] [2023-12-20 00:59:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:37,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:59:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:59:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:59:37,842 INFO L87 Difference]: Start difference. First operand 8234 states and 14440 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 00:59:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:37,974 INFO L93 Difference]: Finished difference Result 24096 states and 42515 transitions. [2023-12-20 00:59:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:59:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 230 [2023-12-20 00:59:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:38,054 INFO L225 Difference]: With dead ends: 24096 [2023-12-20 00:59:38,054 INFO L226 Difference]: Without dead ends: 16498 [2023-12-20 00:59:38,061 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 00:59:38,062 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 592 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:38,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3507 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16498 states. [2023-12-20 00:59:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16498 to 12329. [2023-12-20 00:59:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12329 states, 12328 states have (on average 1.7558403634003894) internal successors, (21646), 12328 states have internal predecessors, (21646), 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 00:59:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 21646 transitions. [2023-12-20 00:59:38,299 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 21646 transitions. Word has length 230 [2023-12-20 00:59:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:38,300 INFO L495 AbstractCegarLoop]: Abstraction has 12329 states and 21646 transitions. [2023-12-20 00:59:38,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 00:59:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 21646 transitions. [2023-12-20 00:59:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 00:59:38,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:38,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:38,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:59:38,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:38,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1233427544, now seen corresponding path program 1 times [2023-12-20 00:59:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221988543] [2023-12-20 00:59:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:59:38,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221988543] [2023-12-20 00:59:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221988543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915511645] [2023-12-20 00:59:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:38,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:38,421 INFO L87 Difference]: Start difference. First operand 12329 states and 21646 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:38,619 INFO L93 Difference]: Finished difference Result 23981 states and 42124 transitions. [2023-12-20 00:59:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:38,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 230 [2023-12-20 00:59:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:38,647 INFO L225 Difference]: With dead ends: 23981 [2023-12-20 00:59:38,647 INFO L226 Difference]: Without dead ends: 17691 [2023-12-20 00:59:38,658 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 00:59:38,659 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 153 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:38,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2381 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17691 states. [2023-12-20 00:59:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17691 to 17689. [2023-12-20 00:59:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17689 states, 17688 states have (on average 1.7464947987336048) internal successors, (30892), 17688 states have internal predecessors, (30892), 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 00:59:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17689 states to 17689 states and 30892 transitions. [2023-12-20 00:59:39,020 INFO L78 Accepts]: Start accepts. Automaton has 17689 states and 30892 transitions. Word has length 230 [2023-12-20 00:59:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:39,020 INFO L495 AbstractCegarLoop]: Abstraction has 17689 states and 30892 transitions. [2023-12-20 00:59:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:39,021 INFO L276 IsEmpty]: Start isEmpty. Operand 17689 states and 30892 transitions. [2023-12-20 00:59:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 00:59:39,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:39,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:39,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:59:39,024 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:39,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2019203500, now seen corresponding path program 1 times [2023-12-20 00:59:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622122087] [2023-12-20 00:59:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:39,145 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 00:59:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622122087] [2023-12-20 00:59:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622122087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:39,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:39,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423453733] [2023-12-20 00:59:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:39,147 INFO L87 Difference]: Start difference. First operand 17689 states and 30892 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:39,368 INFO L93 Difference]: Finished difference Result 33893 states and 59262 transitions. [2023-12-20 00:59:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:39,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 230 [2023-12-20 00:59:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:39,412 INFO L225 Difference]: With dead ends: 33893 [2023-12-20 00:59:39,413 INFO L226 Difference]: Without dead ends: 24737 [2023-12-20 00:59:39,434 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 00:59:39,435 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 161 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:39,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2414 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24737 states. [2023-12-20 00:59:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24737 to 24735. [2023-12-20 00:59:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24735 states, 24734 states have (on average 1.738255033557047) internal successors, (42994), 24734 states have internal predecessors, (42994), 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 00:59:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24735 states to 24735 states and 42994 transitions. [2023-12-20 00:59:39,976 INFO L78 Accepts]: Start accepts. Automaton has 24735 states and 42994 transitions. Word has length 230 [2023-12-20 00:59:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:39,976 INFO L495 AbstractCegarLoop]: Abstraction has 24735 states and 42994 transitions. [2023-12-20 00:59:39,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 24735 states and 42994 transitions. [2023-12-20 00:59:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 00:59:39,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:39,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:39,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:59:39,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:39,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:39,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1103356626, now seen corresponding path program 1 times [2023-12-20 00:59:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079985261] [2023-12-20 00:59:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:40,191 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 00:59:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079985261] [2023-12-20 00:59:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079985261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:40,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:40,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:40,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54633975] [2023-12-20 00:59:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:40,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:40,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:40,193 INFO L87 Difference]: Start difference. First operand 24735 states and 42994 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:40,482 INFO L93 Difference]: Finished difference Result 47797 states and 83172 transitions. [2023-12-20 00:59:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:40,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 230 [2023-12-20 00:59:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:40,546 INFO L225 Difference]: With dead ends: 47797 [2023-12-20 00:59:40,547 INFO L226 Difference]: Without dead ends: 34735 [2023-12-20 00:59:40,567 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 00:59:40,568 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 177 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:40,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2458 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34735 states. [2023-12-20 00:59:41,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34735 to 34733. [2023-12-20 00:59:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34733 states, 34732 states have (on average 1.7298744673499942) internal successors, (60082), 34732 states have internal predecessors, (60082), 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 00:59:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34733 states to 34733 states and 60082 transitions. [2023-12-20 00:59:41,197 INFO L78 Accepts]: Start accepts. Automaton has 34733 states and 60082 transitions. Word has length 230 [2023-12-20 00:59:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:41,198 INFO L495 AbstractCegarLoop]: Abstraction has 34733 states and 60082 transitions. [2023-12-20 00:59:41,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 34733 states and 60082 transitions. [2023-12-20 00:59:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 00:59:41,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:41,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:59:41,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:41,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 181894960, now seen corresponding path program 1 times [2023-12-20 00:59:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:41,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873960133] [2023-12-20 00:59:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:41,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:41,291 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 00:59:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873960133] [2023-12-20 00:59:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873960133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:41,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:41,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:59:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589031848] [2023-12-20 00:59:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:41,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:59:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:59:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:59:41,293 INFO L87 Difference]: Start difference. First operand 34733 states and 60082 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:41,808 INFO L93 Difference]: Finished difference Result 77979 states and 135480 transitions. [2023-12-20 00:59:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:59:41,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 230 [2023-12-20 00:59:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:42,022 INFO L225 Difference]: With dead ends: 77979 [2023-12-20 00:59:42,023 INFO L226 Difference]: Without dead ends: 53600 [2023-12-20 00:59:42,052 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 00:59:42,052 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 185 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:42,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 2482 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53600 states. [2023-12-20 00:59:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53600 to 53598. [2023-12-20 00:59:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53598 states, 53597 states have (on average 1.7223352053286565) internal successors, (92312), 53597 states have internal predecessors, (92312), 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 00:59:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53598 states to 53598 states and 92312 transitions. [2023-12-20 00:59:43,313 INFO L78 Accepts]: Start accepts. Automaton has 53598 states and 92312 transitions. Word has length 230 [2023-12-20 00:59:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:43,313 INFO L495 AbstractCegarLoop]: Abstraction has 53598 states and 92312 transitions. [2023-12-20 00:59:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 00:59:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 53598 states and 92312 transitions. [2023-12-20 00:59:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-20 00:59:43,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:43,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:43,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:59:43,316 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:43,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1297167280, now seen corresponding path program 1 times [2023-12-20 00:59:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:43,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872475649] [2023-12-20 00:59:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:43,458 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 00:59:43,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:43,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872475649] [2023-12-20 00:59:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872475649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:43,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:59:43,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86186649] [2023-12-20 00:59:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:59:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:59:43,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:59:43,460 INFO L87 Difference]: Start difference. First operand 53598 states and 92312 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 00:59:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:44,813 INFO L93 Difference]: Finished difference Result 177724 states and 306490 transitions. [2023-12-20 00:59:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:59:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 231 [2023-12-20 00:59:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:45,153 INFO L225 Difference]: With dead ends: 177724 [2023-12-20 00:59:45,153 INFO L226 Difference]: Without dead ends: 124704 [2023-12-20 00:59:45,212 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 00:59:45,212 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 590 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:45,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 3642 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:59:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124704 states. [2023-12-20 00:59:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124704 to 88882. [2023-12-20 00:59:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88882 states, 88881 states have (on average 1.7148321913569828) internal successors, (152416), 88881 states have internal predecessors, (152416), 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 00:59:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88882 states to 88882 states and 152416 transitions. [2023-12-20 00:59:47,255 INFO L78 Accepts]: Start accepts. Automaton has 88882 states and 152416 transitions. Word has length 231 [2023-12-20 00:59:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:47,256 INFO L495 AbstractCegarLoop]: Abstraction has 88882 states and 152416 transitions. [2023-12-20 00:59:47,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 00:59:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 88882 states and 152416 transitions. [2023-12-20 00:59:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-20 00:59:47,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:47,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:47,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:59:47,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:47,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1620319259, now seen corresponding path program 1 times [2023-12-20 00:59:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:47,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012309884] [2023-12-20 00:59:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:47,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:47,384 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 00:59:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012309884] [2023-12-20 00:59:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012309884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:47,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:59:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879961391] [2023-12-20 00:59:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:59:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:59:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:59:47,388 INFO L87 Difference]: Start difference. First operand 88882 states and 152416 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 00:59:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:49,363 INFO L93 Difference]: Finished difference Result 294928 states and 506446 transitions. [2023-12-20 00:59:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:59:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 232 [2023-12-20 00:59:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:49,948 INFO L225 Difference]: With dead ends: 294928 [2023-12-20 00:59:49,948 INFO L226 Difference]: Without dead ends: 206624 [2023-12-20 00:59:50,040 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 00:59:50,041 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 588 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:50,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3651 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:59:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206624 states. [2023-12-20 00:59:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206624 to 147310. [2023-12-20 00:59:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147310 states, 147309 states have (on average 1.7074584716480323) internal successors, (251524), 147309 states have internal predecessors, (251524), 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 00:59:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147310 states to 147310 states and 251524 transitions. [2023-12-20 00:59:53,330 INFO L78 Accepts]: Start accepts. Automaton has 147310 states and 251524 transitions. Word has length 232 [2023-12-20 00:59:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:53,330 INFO L495 AbstractCegarLoop]: Abstraction has 147310 states and 251524 transitions. [2023-12-20 00:59:53,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 00:59:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 147310 states and 251524 transitions. [2023-12-20 00:59:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-20 00:59:53,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:53,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:53,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:59:53,333 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:53,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1252323033, now seen corresponding path program 1 times [2023-12-20 00:59:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:53,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766975810] [2023-12-20 00:59:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:53,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:53,460 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 00:59:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766975810] [2023-12-20 00:59:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766975810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:59:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:59:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:59:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228199492] [2023-12-20 00:59:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:59:53,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:59:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:59:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:59:53,462 INFO L87 Difference]: Start difference. First operand 147310 states and 251524 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 00:59:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:56,670 INFO L93 Difference]: Finished difference Result 487596 states and 833778 transitions. [2023-12-20 00:59:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:59:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 233 [2023-12-20 00:59:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:57,509 INFO L225 Difference]: With dead ends: 487596 [2023-12-20 00:59:57,509 INFO L226 Difference]: Without dead ends: 340864 [2023-12-20 00:59:57,606 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 00:59:57,612 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 586 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:57,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 3646 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:59:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340864 states. [2023-12-20 01:00:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340864 to 243362. [2023-12-20 01:00:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243362 states, 243361 states have (on average 1.7002724347779636) internal successors, (413780), 243361 states have internal predecessors, (413780), 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 01:00:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243362 states to 243362 states and 413780 transitions. [2023-12-20 01:00:02,851 INFO L78 Accepts]: Start accepts. Automaton has 243362 states and 413780 transitions. Word has length 233 [2023-12-20 01:00:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:02,852 INFO L495 AbstractCegarLoop]: Abstraction has 243362 states and 413780 transitions. [2023-12-20 01:00:02,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 01:00:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 243362 states and 413780 transitions. [2023-12-20 01:00:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-20 01:00:02,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:02,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:02,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:00:02,872 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:02,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash 115372622, now seen corresponding path program 1 times [2023-12-20 01:00:02,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:02,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198763241] [2023-12-20 01:00:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:03,377 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 01:00:03,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:03,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198763241] [2023-12-20 01:00:03,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198763241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:03,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:03,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:00:03,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102033886] [2023-12-20 01:00:03,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:03,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:00:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:00:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:00:03,379 INFO L87 Difference]: Start difference. First operand 243362 states and 413780 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 01:00:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:08,768 INFO L93 Difference]: Finished difference Result 799968 states and 1362326 transitions. [2023-12-20 01:00:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:00:08,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 234 [2023-12-20 01:00:08,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:10,312 INFO L225 Difference]: With dead ends: 799968 [2023-12-20 01:00:10,313 INFO L226 Difference]: Without dead ends: 557184 [2023-12-20 01:00:10,783 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 01:00:10,785 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 584 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:10,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 3629 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:11,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557184 states. [2023-12-20 01:00:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557184 to 399102. [2023-12-20 01:00:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399102 states, 399101 states have (on average 1.6933658397247815) internal successors, (675824), 399101 states have internal predecessors, (675824), 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 01:00:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399102 states to 399102 states and 675824 transitions. [2023-12-20 01:00:20,469 INFO L78 Accepts]: Start accepts. Automaton has 399102 states and 675824 transitions. Word has length 234 [2023-12-20 01:00:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:20,469 INFO L495 AbstractCegarLoop]: Abstraction has 399102 states and 675824 transitions. [2023-12-20 01:00:20,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 01:00:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 399102 states and 675824 transitions. [2023-12-20 01:00:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:00:20,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:20,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:00:20,471 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:20,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2018808022, now seen corresponding path program 1 times [2023-12-20 01:00:20,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:20,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536516143] [2023-12-20 01:00:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:20,839 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 01:00:20,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536516143] [2023-12-20 01:00:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536516143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:00:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615639215] [2023-12-20 01:00:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:20,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:00:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:00:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:00:20,842 INFO L87 Difference]: Start difference. First operand 399102 states and 675824 transitions. Second operand has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 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 01:00:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:26,682 INFO L93 Difference]: Finished difference Result 797628 states and 1350635 transitions. [2023-12-20 01:00:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:00:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 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 236 [2023-12-20 01:00:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:27,835 INFO L225 Difference]: With dead ends: 797628 [2023-12-20 01:00:27,835 INFO L226 Difference]: Without dead ends: 399104 [2023-12-20 01:00:28,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:00:28,031 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 771 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:28,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 5689 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:00:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399104 states. [2023-12-20 01:00:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399104 to 399102. [2023-12-20 01:00:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399102 states, 399101 states have (on average 1.6855357415791992) internal successors, (672699), 399101 states have internal predecessors, (672699), 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 01:00:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399102 states to 399102 states and 672699 transitions. [2023-12-20 01:00:36,268 INFO L78 Accepts]: Start accepts. Automaton has 399102 states and 672699 transitions. Word has length 236 [2023-12-20 01:00:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 399102 states and 672699 transitions. [2023-12-20 01:00:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 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 01:00:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 399102 states and 672699 transitions. [2023-12-20 01:00:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-20 01:00:36,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:36,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:00:36,275 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:36,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1700309674, now seen corresponding path program 1 times [2023-12-20 01:00:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461170460] [2023-12-20 01:00:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:36,793 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 01:00:36,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:36,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461170460] [2023-12-20 01:00:36,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461170460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:00:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179591692] [2023-12-20 01:00:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:36,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:00:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:00:36,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:00:36,794 INFO L87 Difference]: Start difference. First operand 399102 states and 672699 transitions. Second operand has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 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 01:00:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:45,589 INFO L93 Difference]: Finished difference Result 1180054 states and 1990577 transitions. [2023-12-20 01:00:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:00:45,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 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 239 [2023-12-20 01:00:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:47,836 INFO L225 Difference]: With dead ends: 1180054 [2023-12-20 01:00:47,837 INFO L226 Difference]: Without dead ends: 781530 [2023-12-20 01:00:48,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:00:48,133 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 761 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 5712 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:48,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 5712 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:00:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781530 states. [2023-12-20 01:01:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781530 to 781528. [2023-12-20 01:01:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781528 states, 781527 states have (on average 1.6744015241955812) internal successors, (1308590), 781527 states have internal predecessors, (1308590), 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 01:01:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781528 states to 781528 states and 1308590 transitions. [2023-12-20 01:01:05,848 INFO L78 Accepts]: Start accepts. Automaton has 781528 states and 1308590 transitions. Word has length 239 [2023-12-20 01:01:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:05,849 INFO L495 AbstractCegarLoop]: Abstraction has 781528 states and 1308590 transitions. [2023-12-20 01:01:05,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 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 01:01:05,849 INFO L276 IsEmpty]: Start isEmpty. Operand 781528 states and 1308590 transitions. [2023-12-20 01:01:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-20 01:01:05,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:05,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:05,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:01:05,851 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:05,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1184629747, now seen corresponding path program 1 times [2023-12-20 01:01:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:05,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379968871] [2023-12-20 01:01:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:05,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:06,292 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 01:01:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379968871] [2023-12-20 01:01:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379968871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:06,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:06,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:06,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094232975] [2023-12-20 01:01:06,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:06,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:06,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:06,294 INFO L87 Difference]: Start difference. First operand 781528 states and 1308590 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 01:01:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:14,046 INFO L93 Difference]: Finished difference Result 811704 states and 1348823 transitions. [2023-12-20 01:01:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 240 [2023-12-20 01:01:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:16,553 INFO L225 Difference]: With dead ends: 811704 [2023-12-20 01:01:16,553 INFO L226 Difference]: Without dead ends: 811702 [2023-12-20 01:01:16,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:16,865 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 1 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3492 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:16,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3492 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811702 states. [2023-12-20 01:01:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811702 to 801644. [2023-12-20 01:01:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801644 states, 801643 states have (on average 1.6573774111418673) internal successors, (1328625), 801643 states have internal predecessors, (1328625), 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 01:01:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801644 states to 801644 states and 1328625 transitions. [2023-12-20 01:01:36,774 INFO L78 Accepts]: Start accepts. Automaton has 801644 states and 1328625 transitions. Word has length 240 [2023-12-20 01:01:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:36,777 INFO L495 AbstractCegarLoop]: Abstraction has 801644 states and 1328625 transitions. [2023-12-20 01:01:36,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 01:01:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 801644 states and 1328625 transitions. [2023-12-20 01:01:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-20 01:01:36,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:36,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:01:36,791 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:36,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1045838355, now seen corresponding path program 1 times [2023-12-20 01:01:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956674715] [2023-12-20 01:01:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 01:01:37,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:37,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956674715] [2023-12-20 01:01:37,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956674715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:37,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:37,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:37,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405552804] [2023-12-20 01:01:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:37,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:37,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:37,018 INFO L87 Difference]: Start difference. First operand 801644 states and 1328625 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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)