/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:40:44,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:40:44,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:40:44,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:40:44,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:40:44,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:40:44,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:40:44,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:40:44,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:40:44,321 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:40:44,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:40:44,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:40:44,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:40:44,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:40:44,323 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:40:44,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:40:44,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:40:44,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:40:44,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:40:44,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:40:44,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:40:44,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:40:44,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:40:44,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:40:44,325 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:40:44,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:40:44,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:40:44,325 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:40:44,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:40:44,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:40:44,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:40:44,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:40:44,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:40:44,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:40:44,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:40:44,328 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:40:44,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:40:44,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:40:44,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:40:44,523 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:40:44,523 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:40:44,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2023-12-15 23:40:45,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:40:45,612 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:40:45,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2023-12-15 23:40:45,623 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c64941/944800399c3f48dfb3c9f3d833750079/FLAGf7814a38f [2023-12-15 23:40:45,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c64941/944800399c3f48dfb3c9f3d833750079 [2023-12-15 23:40:45,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:40:45,637 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:40:45,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:40:45,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:40:45,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:40:45,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:40:45" (1/1) ... [2023-12-15 23:40:45,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac5d29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:45, skipping insertion in model container [2023-12-15 23:40:45,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:40:45" (1/1) ... [2023-12-15 23:40:45,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:40:45,945 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c[11829,11842] [2023-12-15 23:40:46,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:40:46,019 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:40:46,083 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c[11829,11842] [2023-12-15 23:40:46,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:40:46,152 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:40:46,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46 WrapperNode [2023-12-15 23:40:46,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:40:46,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:40:46,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:40:46,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:40:46,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,208 INFO L138 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1040 [2023-12-15 23:40:46,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:40:46,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:40:46,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:40:46,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:40:46,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,247 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 23:40:46,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:40:46,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:40:46,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:40:46,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:40:46,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (1/1) ... [2023-12-15 23:40:46,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:40:46,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:40:46,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 23:40:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:40:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:40:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:40:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:40:46,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 23:40:46,454 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:40:46,456 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:40:47,076 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:40:47,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:40:47,124 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:40:47,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:40:47 BoogieIcfgContainer [2023-12-15 23:40:47,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:40:47,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:40:47,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:40:47,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:40:47,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:40:45" (1/3) ... [2023-12-15 23:40:47,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347627c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:40:47, skipping insertion in model container [2023-12-15 23:40:47,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:40:46" (2/3) ... [2023-12-15 23:40:47,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347627c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:40:47, skipping insertion in model container [2023-12-15 23:40:47,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:40:47" (3/3) ... [2023-12-15 23:40:47,131 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2023-12-15 23:40:47,142 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:40:47,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:40:47,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:40:47,189 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;@c7108bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:40:47,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:40:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 228 states have (on average 1.7763157894736843) internal successors, (405), 229 states have internal predecessors, (405), 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) [2023-12-15 23:40:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 23:40:47,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:47,204 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] [2023-12-15 23:40:47,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:47,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2062089853, now seen corresponding path program 1 times [2023-12-15 23:40:47,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:47,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795459956] [2023-12-15 23:40:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:47,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795459956] [2023-12-15 23:40:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795459956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130394825] [2023-12-15 23:40:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:47,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:47,951 INFO L87 Difference]: Start difference. First operand has 230 states, 228 states have (on average 1.7763157894736843) internal successors, (405), 229 states have internal predecessors, (405), 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 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2023-12-15 23:40:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:48,675 INFO L93 Difference]: Finished difference Result 1830 states and 2953 transitions. [2023-12-15 23:40:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 23:40:48,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 124 [2023-12-15 23:40:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:48,694 INFO L225 Difference]: With dead ends: 1830 [2023-12-15 23:40:48,695 INFO L226 Difference]: Without dead ends: 1705 [2023-12-15 23:40:48,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-15 23:40:48,701 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 3823 mSDsluCounter, 7142 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 8126 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:48,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 8126 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:40:48,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-12-15 23:40:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 348. [2023-12-15 23:40:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.440922190201729) internal successors, (500), 347 states have internal predecessors, (500), 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) [2023-12-15 23:40:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 500 transitions. [2023-12-15 23:40:48,766 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 500 transitions. Word has length 124 [2023-12-15 23:40:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:48,767 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 500 transitions. [2023-12-15 23:40:48,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2023-12-15 23:40:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 500 transitions. [2023-12-15 23:40:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:48,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:48,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:48,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:40:48,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:48,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1719129492, now seen corresponding path program 1 times [2023-12-15 23:40:48,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:48,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417764155] [2023-12-15 23:40:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417764155] [2023-12-15 23:40:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417764155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906685730] [2023-12-15 23:40:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:49,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:49,072 INFO L87 Difference]: Start difference. First operand 348 states and 500 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:49,365 INFO L93 Difference]: Finished difference Result 1960 states and 3048 transitions. [2023-12-15 23:40:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:49,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:49,373 INFO L225 Difference]: With dead ends: 1960 [2023-12-15 23:40:49,373 INFO L226 Difference]: Without dead ends: 1780 [2023-12-15 23:40:49,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:49,377 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 2718 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:49,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 4026 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:40:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2023-12-15 23:40:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 552. [2023-12-15 23:40:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 1.4954627949183303) internal successors, (824), 551 states have internal predecessors, (824), 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) [2023-12-15 23:40:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 824 transitions. [2023-12-15 23:40:49,417 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 824 transitions. Word has length 126 [2023-12-15 23:40:49,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:49,419 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 824 transitions. [2023-12-15 23:40:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 824 transitions. [2023-12-15 23:40:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:49,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:49,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:49,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:40:49,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:49,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash 408412928, now seen corresponding path program 1 times [2023-12-15 23:40:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:49,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360503947] [2023-12-15 23:40:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360503947] [2023-12-15 23:40:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360503947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:49,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374881765] [2023-12-15 23:40:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:49,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:49,629 INFO L87 Difference]: Start difference. First operand 552 states and 824 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:49,905 INFO L93 Difference]: Finished difference Result 2164 states and 3372 transitions. [2023-12-15 23:40:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:49,911 INFO L225 Difference]: With dead ends: 2164 [2023-12-15 23:40:49,911 INFO L226 Difference]: Without dead ends: 1984 [2023-12-15 23:40:49,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:49,912 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 2882 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2882 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:49,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2882 Valid, 3871 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:40:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2023-12-15 23:40:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 840. [2023-12-15 23:40:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.5268176400476758) internal successors, (1281), 839 states have internal predecessors, (1281), 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) [2023-12-15 23:40:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1281 transitions. [2023-12-15 23:40:49,930 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1281 transitions. Word has length 126 [2023-12-15 23:40:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:49,930 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1281 transitions. [2023-12-15 23:40:49,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1281 transitions. [2023-12-15 23:40:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:49,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:49,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:49,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:40:49,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:49,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash 712902436, now seen corresponding path program 1 times [2023-12-15 23:40:49,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:49,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020606459] [2023-12-15 23:40:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:50,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020606459] [2023-12-15 23:40:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020606459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:50,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:50,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66549619] [2023-12-15 23:40:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:50,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:50,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:50,157 INFO L87 Difference]: Start difference. First operand 840 states and 1281 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:50,386 INFO L93 Difference]: Finished difference Result 2358 states and 3680 transitions. [2023-12-15 23:40:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:50,393 INFO L225 Difference]: With dead ends: 2358 [2023-12-15 23:40:50,393 INFO L226 Difference]: Without dead ends: 2178 [2023-12-15 23:40:50,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:50,394 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 3477 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3477 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:50,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3477 Valid, 3056 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2023-12-15 23:40:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1034. [2023-12-15 23:40:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.5382381413359147) internal successors, (1589), 1033 states have internal predecessors, (1589), 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) [2023-12-15 23:40:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1589 transitions. [2023-12-15 23:40:50,416 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1589 transitions. Word has length 126 [2023-12-15 23:40:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:50,416 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1589 transitions. [2023-12-15 23:40:50,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1589 transitions. [2023-12-15 23:40:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:50,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:50,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:50,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:40:50,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:50,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2064741336, now seen corresponding path program 1 times [2023-12-15 23:40:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:50,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944617531] [2023-12-15 23:40:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:50,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944617531] [2023-12-15 23:40:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944617531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:50,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:50,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375771559] [2023-12-15 23:40:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:50,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:50,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:50,666 INFO L87 Difference]: Start difference. First operand 1034 states and 1589 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:50,906 INFO L93 Difference]: Finished difference Result 2547 states and 3980 transitions. [2023-12-15 23:40:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:50,913 INFO L225 Difference]: With dead ends: 2547 [2023-12-15 23:40:50,913 INFO L226 Difference]: Without dead ends: 2367 [2023-12-15 23:40:50,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:50,915 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 3799 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3799 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:50,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3799 Valid, 3288 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-12-15 23:40:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1213. [2023-12-15 23:40:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.5453795379537953) internal successors, (1873), 1212 states have internal predecessors, (1873), 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) [2023-12-15 23:40:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1873 transitions. [2023-12-15 23:40:50,941 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1873 transitions. Word has length 126 [2023-12-15 23:40:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:50,941 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1873 transitions. [2023-12-15 23:40:50,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1873 transitions. [2023-12-15 23:40:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:50,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:50,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:50,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:40:50,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:50,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash -415974754, now seen corresponding path program 1 times [2023-12-15 23:40:50,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:50,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046259345] [2023-12-15 23:40:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046259345] [2023-12-15 23:40:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046259345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:51,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:51,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:51,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91227032] [2023-12-15 23:40:51,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:51,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:51,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:51,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:51,145 INFO L87 Difference]: Start difference. First operand 1213 states and 1873 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:51,407 INFO L93 Difference]: Finished difference Result 2725 states and 4263 transitions. [2023-12-15 23:40:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:51,414 INFO L225 Difference]: With dead ends: 2725 [2023-12-15 23:40:51,414 INFO L226 Difference]: Without dead ends: 2545 [2023-12-15 23:40:51,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:51,417 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 3938 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3938 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3938 Valid, 3151 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2023-12-15 23:40:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1391. [2023-12-15 23:40:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.5510791366906476) internal successors, (2156), 1390 states have internal predecessors, (2156), 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) [2023-12-15 23:40:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2156 transitions. [2023-12-15 23:40:51,454 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2156 transitions. Word has length 126 [2023-12-15 23:40:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:51,454 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 2156 transitions. [2023-12-15 23:40:51,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2156 transitions. [2023-12-15 23:40:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:51,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:51,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:51,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:40:51,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:51,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1877396967, now seen corresponding path program 1 times [2023-12-15 23:40:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465691389] [2023-12-15 23:40:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:51,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:51,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465691389] [2023-12-15 23:40:51,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465691389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:51,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:51,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:51,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916796162] [2023-12-15 23:40:51,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:51,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:51,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:51,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:51,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:51,841 INFO L87 Difference]: Start difference. First operand 1391 states and 2156 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:52,183 INFO L93 Difference]: Finished difference Result 2552 states and 3998 transitions. [2023-12-15 23:40:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:52,187 INFO L225 Difference]: With dead ends: 2552 [2023-12-15 23:40:52,187 INFO L226 Difference]: Without dead ends: 1393 [2023-12-15 23:40:52,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:40:52,191 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1444 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:52,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 1588 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-12-15 23:40:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2023-12-15 23:40:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.5460431654676259) internal successors, (2149), 1390 states have internal predecessors, (2149), 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) [2023-12-15 23:40:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2149 transitions. [2023-12-15 23:40:52,209 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2149 transitions. Word has length 126 [2023-12-15 23:40:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:52,210 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 2149 transitions. [2023-12-15 23:40:52,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2149 transitions. [2023-12-15 23:40:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:52,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:52,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:52,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:40:52,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:52,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:52,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1598046760, now seen corresponding path program 1 times [2023-12-15 23:40:52,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:52,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4562510] [2023-12-15 23:40:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4562510] [2023-12-15 23:40:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4562510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:40:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85118817] [2023-12-15 23:40:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:40:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:40:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:40:52,258 INFO L87 Difference]: Start difference. First operand 1391 states and 2149 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:52,281 INFO L93 Difference]: Finished difference Result 3625 states and 5676 transitions. [2023-12-15 23:40:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:40:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:52,287 INFO L225 Difference]: With dead ends: 3625 [2023-12-15 23:40:52,287 INFO L226 Difference]: Without dead ends: 2466 [2023-12-15 23:40:52,289 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 [2023-12-15 23:40:52,289 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 131 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:52,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 734 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:40:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2023-12-15 23:40:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2464. [2023-12-15 23:40:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 1.5489240763296792) internal successors, (3815), 2463 states have internal predecessors, (3815), 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) [2023-12-15 23:40:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3815 transitions. [2023-12-15 23:40:52,322 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3815 transitions. Word has length 126 [2023-12-15 23:40:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:52,323 INFO L495 AbstractCegarLoop]: Abstraction has 2464 states and 3815 transitions. [2023-12-15 23:40:52,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3815 transitions. [2023-12-15 23:40:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:52,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:52,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:52,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:40:52,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:52,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1049364152, now seen corresponding path program 1 times [2023-12-15 23:40:52,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:52,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269600665] [2023-12-15 23:40:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:52,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269600665] [2023-12-15 23:40:52,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269600665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:52,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:52,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658628512] [2023-12-15 23:40:52,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:52,511 INFO L87 Difference]: Start difference. First operand 2464 states and 3815 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:52,749 INFO L93 Difference]: Finished difference Result 5297 states and 8254 transitions. [2023-12-15 23:40:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:52,763 INFO L225 Difference]: With dead ends: 5297 [2023-12-15 23:40:52,764 INFO L226 Difference]: Without dead ends: 4952 [2023-12-15 23:40:52,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:52,770 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2940 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:52,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2940 Valid, 3640 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2023-12-15 23:40:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 2813. [2023-12-15 23:40:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2812 states have (on average 1.5512091038406828) internal successors, (4362), 2812 states have internal predecessors, (4362), 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) [2023-12-15 23:40:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4362 transitions. [2023-12-15 23:40:52,836 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4362 transitions. Word has length 126 [2023-12-15 23:40:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:52,836 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 4362 transitions. [2023-12-15 23:40:52,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:52,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4362 transitions. [2023-12-15 23:40:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:52,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:52,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:52,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:40:52,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:52,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1053228436, now seen corresponding path program 1 times [2023-12-15 23:40:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176325847] [2023-12-15 23:40:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176325847] [2023-12-15 23:40:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176325847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:53,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:53,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407682318] [2023-12-15 23:40:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:53,055 INFO L87 Difference]: Start difference. First operand 2813 states and 4362 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:53,360 INFO L93 Difference]: Finished difference Result 5646 states and 8801 transitions. [2023-12-15 23:40:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:53,374 INFO L225 Difference]: With dead ends: 5646 [2023-12-15 23:40:53,374 INFO L226 Difference]: Without dead ends: 5301 [2023-12-15 23:40:53,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:53,377 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 3043 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:53,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 4408 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:40:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2023-12-15 23:40:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 3167. [2023-12-15 23:40:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 3166 states have (on average 1.553063802905875) internal successors, (4917), 3166 states have internal predecessors, (4917), 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) [2023-12-15 23:40:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 4917 transitions. [2023-12-15 23:40:53,430 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 4917 transitions. Word has length 126 [2023-12-15 23:40:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:53,430 INFO L495 AbstractCegarLoop]: Abstraction has 3167 states and 4917 transitions. [2023-12-15 23:40:53,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 4917 transitions. [2023-12-15 23:40:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 23:40:53,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:53,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:53,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:40:53,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:53,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash -816065136, now seen corresponding path program 1 times [2023-12-15 23:40:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417164077] [2023-12-15 23:40:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:53,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417164077] [2023-12-15 23:40:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417164077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:53,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:53,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:40:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983953651] [2023-12-15 23:40:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:40:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:40:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:40:53,584 INFO L87 Difference]: Start difference. First operand 3167 states and 4917 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:53,832 INFO L93 Difference]: Finished difference Result 6010 states and 9372 transitions. [2023-12-15 23:40:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:40:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-15 23:40:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:53,842 INFO L225 Difference]: With dead ends: 6010 [2023-12-15 23:40:53,842 INFO L226 Difference]: Without dead ends: 5665 [2023-12-15 23:40:53,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:40:53,886 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 3377 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:53,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 4613 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2023-12-15 23:40:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 3536. [2023-12-15 23:40:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 1.5547383309759548) internal successors, (5496), 3535 states have internal predecessors, (5496), 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) [2023-12-15 23:40:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5496 transitions. [2023-12-15 23:40:53,939 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5496 transitions. Word has length 126 [2023-12-15 23:40:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:53,939 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5496 transitions. [2023-12-15 23:40:53,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5496 transitions. [2023-12-15 23:40:53,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 23:40:53,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:53,940 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] [2023-12-15 23:40:53,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:40:53,941 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:53,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1932145280, now seen corresponding path program 1 times [2023-12-15 23:40:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:53,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72970954] [2023-12-15 23:40:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:54,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:54,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72970954] [2023-12-15 23:40:54,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72970954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:54,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:54,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:54,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849900425] [2023-12-15 23:40:54,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:54,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:54,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:54,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:54,058 INFO L87 Difference]: Start difference. First operand 3536 states and 5496 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-12-15 23:40:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:54,197 INFO L93 Difference]: Finished difference Result 6989 states and 10904 transitions. [2023-12-15 23:40:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:54,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 127 [2023-12-15 23:40:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:54,202 INFO L225 Difference]: With dead ends: 6989 [2023-12-15 23:40:54,202 INFO L226 Difference]: Without dead ends: 3536 [2023-12-15 23:40:54,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:54,206 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 807 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:54,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 202 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-12-15 23:40:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 3536. [2023-12-15 23:40:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 1.5437057991513436) internal successors, (5457), 3535 states have internal predecessors, (5457), 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) [2023-12-15 23:40:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5457 transitions. [2023-12-15 23:40:54,259 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5457 transitions. Word has length 127 [2023-12-15 23:40:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:54,259 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5457 transitions. [2023-12-15 23:40:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-12-15 23:40:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5457 transitions. [2023-12-15 23:40:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 23:40:54,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:54,261 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] [2023-12-15 23:40:54,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:40:54,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:54,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1294612734, now seen corresponding path program 1 times [2023-12-15 23:40:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:54,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735424226] [2023-12-15 23:40:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:54,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:54,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735424226] [2023-12-15 23:40:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735424226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:54,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:54,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731261497] [2023-12-15 23:40:54,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:54,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:54,358 INFO L87 Difference]: Start difference. First operand 3536 states and 5457 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-12-15 23:40:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:54,501 INFO L93 Difference]: Finished difference Result 6997 states and 10836 transitions. [2023-12-15 23:40:54,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:54,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 128 [2023-12-15 23:40:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:54,506 INFO L225 Difference]: With dead ends: 6997 [2023-12-15 23:40:54,507 INFO L226 Difference]: Without dead ends: 3536 [2023-12-15 23:40:54,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:54,511 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 823 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:54,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 186 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-12-15 23:40:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 3536. [2023-12-15 23:40:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 1.5326732673267327) internal successors, (5418), 3535 states have internal predecessors, (5418), 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) [2023-12-15 23:40:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5418 transitions. [2023-12-15 23:40:54,553 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5418 transitions. Word has length 128 [2023-12-15 23:40:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:54,553 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5418 transitions. [2023-12-15 23:40:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-12-15 23:40:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5418 transitions. [2023-12-15 23:40:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-15 23:40:54,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:54,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:40:54,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:54,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1111867712, now seen corresponding path program 1 times [2023-12-15 23:40:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:54,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783153972] [2023-12-15 23:40:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:54,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783153972] [2023-12-15 23:40:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783153972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:54,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785449066] [2023-12-15 23:40:54,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:54,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:54,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:54,671 INFO L87 Difference]: Start difference. First operand 3536 states and 5418 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:54,777 INFO L93 Difference]: Finished difference Result 6993 states and 10754 transitions. [2023-12-15 23:40:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:54,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-15 23:40:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:54,782 INFO L225 Difference]: With dead ends: 6993 [2023-12-15 23:40:54,782 INFO L226 Difference]: Without dead ends: 3536 [2023-12-15 23:40:54,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:54,786 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 805 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:54,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 194 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-12-15 23:40:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 3536. [2023-12-15 23:40:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 1.5216407355021215) internal successors, (5379), 3535 states have internal predecessors, (5379), 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) [2023-12-15 23:40:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5379 transitions. [2023-12-15 23:40:54,827 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5379 transitions. Word has length 129 [2023-12-15 23:40:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:54,827 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5379 transitions. [2023-12-15 23:40:54,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5379 transitions. [2023-12-15 23:40:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 23:40:54,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:54,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:54,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:40:54,829 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:54,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1495691830, now seen corresponding path program 1 times [2023-12-15 23:40:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528615140] [2023-12-15 23:40:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528615140] [2023-12-15 23:40:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528615140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:54,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:54,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067135743] [2023-12-15 23:40:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:54,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:54,920 INFO L87 Difference]: Start difference. First operand 3536 states and 5379 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:55,024 INFO L93 Difference]: Finished difference Result 7001 states and 10685 transitions. [2023-12-15 23:40:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:55,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-15 23:40:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:55,029 INFO L225 Difference]: With dead ends: 7001 [2023-12-15 23:40:55,029 INFO L226 Difference]: Without dead ends: 3536 [2023-12-15 23:40:55,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:55,033 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 822 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:55,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 178 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-12-15 23:40:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 3536. [2023-12-15 23:40:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 1.5106082036775106) internal successors, (5340), 3535 states have internal predecessors, (5340), 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) [2023-12-15 23:40:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5340 transitions. [2023-12-15 23:40:55,072 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5340 transitions. Word has length 130 [2023-12-15 23:40:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:55,072 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5340 transitions. [2023-12-15 23:40:55,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5340 transitions. [2023-12-15 23:40:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 23:40:55,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:55,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:40:55,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:55,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1828244712, now seen corresponding path program 1 times [2023-12-15 23:40:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866162450] [2023-12-15 23:40:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866162450] [2023-12-15 23:40:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866162450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:55,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508783581] [2023-12-15 23:40:55,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:55,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:55,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:55,156 INFO L87 Difference]: Start difference. First operand 3536 states and 5340 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:55,382 INFO L93 Difference]: Finished difference Result 10399 states and 15782 transitions. [2023-12-15 23:40:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-15 23:40:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:55,392 INFO L225 Difference]: With dead ends: 10399 [2023-12-15 23:40:55,392 INFO L226 Difference]: Without dead ends: 6930 [2023-12-15 23:40:55,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:55,398 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1203 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:55,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 270 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:40:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6930 states. [2023-12-15 23:40:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6930 to 6928. [2023-12-15 23:40:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6927 states have (on average 1.5114768297964487) internal successors, (10470), 6927 states have internal predecessors, (10470), 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) [2023-12-15 23:40:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 10470 transitions. [2023-12-15 23:40:55,483 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 10470 transitions. Word has length 131 [2023-12-15 23:40:55,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:55,483 INFO L495 AbstractCegarLoop]: Abstraction has 6928 states and 10470 transitions. [2023-12-15 23:40:55,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:55,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 10470 transitions. [2023-12-15 23:40:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 23:40:55,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:55,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:55,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:40:55,485 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:55,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2136324202, now seen corresponding path program 1 times [2023-12-15 23:40:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97095901] [2023-12-15 23:40:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:55,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:55,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97095901] [2023-12-15 23:40:55,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97095901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:55,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:55,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:55,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544642329] [2023-12-15 23:40:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:55,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:55,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:55,586 INFO L87 Difference]: Start difference. First operand 6928 states and 10470 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:55,714 INFO L93 Difference]: Finished difference Result 13765 states and 20847 transitions. [2023-12-15 23:40:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-15 23:40:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:55,725 INFO L225 Difference]: With dead ends: 13765 [2023-12-15 23:40:55,725 INFO L226 Difference]: Without dead ends: 6928 [2023-12-15 23:40:55,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:55,733 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 753 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:55,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 218 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6928 states. [2023-12-15 23:40:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6928 to 6928. [2023-12-15 23:40:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6927 states have (on average 1.5003609065973726) internal successors, (10393), 6927 states have internal predecessors, (10393), 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) [2023-12-15 23:40:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 10393 transitions. [2023-12-15 23:40:55,815 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 10393 transitions. Word has length 132 [2023-12-15 23:40:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:55,815 INFO L495 AbstractCegarLoop]: Abstraction has 6928 states and 10393 transitions. [2023-12-15 23:40:55,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 10393 transitions. [2023-12-15 23:40:55,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-15 23:40:55,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:55,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:55,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:40:55,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:55,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 519480744, now seen corresponding path program 1 times [2023-12-15 23:40:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18247041] [2023-12-15 23:40:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:55,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:55,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18247041] [2023-12-15 23:40:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18247041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:55,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:55,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:55,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286421863] [2023-12-15 23:40:55,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:55,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:55,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:55,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:55,921 INFO L87 Difference]: Start difference. First operand 6928 states and 10393 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:56,051 INFO L93 Difference]: Finished difference Result 13769 states and 20698 transitions. [2023-12-15 23:40:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-15 23:40:56,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:56,061 INFO L225 Difference]: With dead ends: 13769 [2023-12-15 23:40:56,061 INFO L226 Difference]: Without dead ends: 6928 [2023-12-15 23:40:56,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:56,069 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 758 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:56,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 210 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6928 states. [2023-12-15 23:40:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6928 to 6928. [2023-12-15 23:40:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6927 states have (on average 1.4892449833982966) internal successors, (10316), 6927 states have internal predecessors, (10316), 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) [2023-12-15 23:40:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 10316 transitions. [2023-12-15 23:40:56,170 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 10316 transitions. Word has length 133 [2023-12-15 23:40:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:56,171 INFO L495 AbstractCegarLoop]: Abstraction has 6928 states and 10316 transitions. [2023-12-15 23:40:56,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 10316 transitions. [2023-12-15 23:40:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 23:40:56,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:56,173 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] [2023-12-15 23:40:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:40:56,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:56,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1830670946, now seen corresponding path program 1 times [2023-12-15 23:40:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563821561] [2023-12-15 23:40:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:56,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:56,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563821561] [2023-12-15 23:40:56,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563821561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:56,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:40:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294458365] [2023-12-15 23:40:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:56,274 INFO L87 Difference]: Start difference. First operand 6928 states and 10316 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 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) [2023-12-15 23:40:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:56,411 INFO L93 Difference]: Finished difference Result 13761 states and 20536 transitions. [2023-12-15 23:40:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:40:56,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 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 134 [2023-12-15 23:40:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:56,421 INFO L225 Difference]: With dead ends: 13761 [2023-12-15 23:40:56,422 INFO L226 Difference]: Without dead ends: 6928 [2023-12-15 23:40:56,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:40:56,429 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 729 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:56,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 230 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:40:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6928 states. [2023-12-15 23:40:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6928 to 6928. [2023-12-15 23:40:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6927 states have (on average 1.4781290601992205) internal successors, (10239), 6927 states have internal predecessors, (10239), 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) [2023-12-15 23:40:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 10239 transitions. [2023-12-15 23:40:56,518 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 10239 transitions. Word has length 134 [2023-12-15 23:40:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:56,518 INFO L495 AbstractCegarLoop]: Abstraction has 6928 states and 10239 transitions. [2023-12-15 23:40:56,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 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) [2023-12-15 23:40:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 10239 transitions. [2023-12-15 23:40:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-15 23:40:56,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:56,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:56,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:40:56,520 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:56,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1024489040, now seen corresponding path program 1 times [2023-12-15 23:40:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:56,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651806415] [2023-12-15 23:40:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:56,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651806415] [2023-12-15 23:40:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651806415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:56,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:40:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693811560] [2023-12-15 23:40:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:40:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:40:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:40:56,737 INFO L87 Difference]: Start difference. First operand 6928 states and 10239 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:56,788 INFO L93 Difference]: Finished difference Result 11598 states and 17143 transitions. [2023-12-15 23:40:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:40:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-15 23:40:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:56,804 INFO L225 Difference]: With dead ends: 11598 [2023-12-15 23:40:56,804 INFO L226 Difference]: Without dead ends: 11596 [2023-12-15 23:40:56,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:40:56,810 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 258 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:56,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1210 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:40:56,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11596 states. [2023-12-15 23:40:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11596 to 6964. [2023-12-15 23:40:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6963 states have (on average 1.4727847192302168) internal successors, (10255), 6963 states have internal predecessors, (10255), 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) [2023-12-15 23:40:56,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 10255 transitions. [2023-12-15 23:40:56,924 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 10255 transitions. Word has length 135 [2023-12-15 23:40:56,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:56,924 INFO L495 AbstractCegarLoop]: Abstraction has 6964 states and 10255 transitions. [2023-12-15 23:40:56,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:56,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 10255 transitions. [2023-12-15 23:40:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-15 23:40:56,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:56,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:56,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:40:56,926 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:56,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1225397196, now seen corresponding path program 1 times [2023-12-15 23:40:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006892029] [2023-12-15 23:40:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:56,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:57,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006892029] [2023-12-15 23:40:57,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006892029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:57,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:57,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 23:40:57,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189713597] [2023-12-15 23:40:57,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:57,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 23:40:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 23:40:57,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:40:57,352 INFO L87 Difference]: Start difference. First operand 6964 states and 10255 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:58,091 INFO L93 Difference]: Finished difference Result 32547 states and 47642 transitions. [2023-12-15 23:40:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 23:40:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-15 23:40:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:58,132 INFO L225 Difference]: With dead ends: 32547 [2023-12-15 23:40:58,132 INFO L226 Difference]: Without dead ends: 25991 [2023-12-15 23:40:58,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-12-15 23:40:58,146 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 2855 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:58,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2855 Valid, 802 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:40:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25991 states. [2023-12-15 23:40:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25991 to 7015. [2023-12-15 23:40:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7015 states, 7014 states have (on average 1.471770744225834) internal successors, (10323), 7014 states have internal predecessors, (10323), 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) [2023-12-15 23:40:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 10323 transitions. [2023-12-15 23:40:58,321 INFO L78 Accepts]: Start accepts. Automaton has 7015 states and 10323 transitions. Word has length 135 [2023-12-15 23:40:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:58,321 INFO L495 AbstractCegarLoop]: Abstraction has 7015 states and 10323 transitions. [2023-12-15 23:40:58,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states and 10323 transitions. [2023-12-15 23:40:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 23:40:58,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:58,323 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] [2023-12-15 23:40:58,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:40:58,323 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:58,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2122016475, now seen corresponding path program 1 times [2023-12-15 23:40:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789295028] [2023-12-15 23:40:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789295028] [2023-12-15 23:40:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789295028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:58,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:40:58,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108882765] [2023-12-15 23:40:58,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:40:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:40:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:40:58,738 INFO L87 Difference]: Start difference. First operand 7015 states and 10323 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 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) [2023-12-15 23:40:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:59,506 INFO L93 Difference]: Finished difference Result 34885 states and 51107 transitions. [2023-12-15 23:40:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 23:40:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 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 136 [2023-12-15 23:40:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:59,552 INFO L225 Difference]: With dead ends: 34885 [2023-12-15 23:40:59,552 INFO L226 Difference]: Without dead ends: 28147 [2023-12-15 23:40:59,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-12-15 23:40:59,565 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2547 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:59,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 966 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:40:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28147 states. [2023-12-15 23:40:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28147 to 7048. [2023-12-15 23:40:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 7047 states have (on average 1.4708386547467007) internal successors, (10365), 7047 states have internal predecessors, (10365), 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) [2023-12-15 23:40:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 10365 transitions. [2023-12-15 23:40:59,834 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 10365 transitions. Word has length 136 [2023-12-15 23:40:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:59,835 INFO L495 AbstractCegarLoop]: Abstraction has 7048 states and 10365 transitions. [2023-12-15 23:40:59,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 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) [2023-12-15 23:40:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 10365 transitions. [2023-12-15 23:40:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 23:40:59,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:59,838 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] [2023-12-15 23:40:59,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:40:59,839 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:59,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1556391605, now seen corresponding path program 1 times [2023-12-15 23:40:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793141797] [2023-12-15 23:40:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793141797] [2023-12-15 23:41:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793141797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:00,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:41:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972358370] [2023-12-15 23:41:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:41:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:41:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:41:00,131 INFO L87 Difference]: Start difference. First operand 7048 states and 10365 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 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) [2023-12-15 23:41:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:00,500 INFO L93 Difference]: Finished difference Result 20328 states and 29965 transitions. [2023-12-15 23:41:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:41:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 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 136 [2023-12-15 23:41:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:00,521 INFO L225 Difference]: With dead ends: 20328 [2023-12-15 23:41:00,521 INFO L226 Difference]: Without dead ends: 13604 [2023-12-15 23:41:00,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:41:00,531 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1720 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:00,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 533 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:41:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13604 states. [2023-12-15 23:41:00,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13604 to 7048. [2023-12-15 23:41:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 7047 states have (on average 1.470696750390237) internal successors, (10364), 7047 states have internal predecessors, (10364), 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) [2023-12-15 23:41:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 10364 transitions. [2023-12-15 23:41:00,634 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 10364 transitions. Word has length 136 [2023-12-15 23:41:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:00,634 INFO L495 AbstractCegarLoop]: Abstraction has 7048 states and 10364 transitions. [2023-12-15 23:41:00,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 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) [2023-12-15 23:41:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 10364 transitions. [2023-12-15 23:41:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-15 23:41:00,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:00,636 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] [2023-12-15 23:41:00,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:41:00,636 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:00,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -596260077, now seen corresponding path program 1 times [2023-12-15 23:41:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168224632] [2023-12-15 23:41:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:00,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168224632] [2023-12-15 23:41:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168224632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:00,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:00,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:41:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421759479] [2023-12-15 23:41:00,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:41:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:41:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:41:00,981 INFO L87 Difference]: Start difference. First operand 7048 states and 10364 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 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) [2023-12-15 23:41:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:01,893 INFO L93 Difference]: Finished difference Result 34951 states and 51205 transitions. [2023-12-15 23:41:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 23:41:01,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 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 137 [2023-12-15 23:41:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:01,938 INFO L225 Difference]: With dead ends: 34951 [2023-12-15 23:41:01,939 INFO L226 Difference]: Without dead ends: 28198 [2023-12-15 23:41:01,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-12-15 23:41:01,951 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1880 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:01,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 1454 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:41:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28198 states. [2023-12-15 23:41:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28198 to 7048. [2023-12-15 23:41:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 7047 states have (on average 1.4702710373208459) internal successors, (10361), 7047 states have internal predecessors, (10361), 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) [2023-12-15 23:41:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 10361 transitions. [2023-12-15 23:41:02,191 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 10361 transitions. Word has length 137 [2023-12-15 23:41:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:02,191 INFO L495 AbstractCegarLoop]: Abstraction has 7048 states and 10361 transitions. [2023-12-15 23:41:02,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 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) [2023-12-15 23:41:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 10361 transitions. [2023-12-15 23:41:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-15 23:41:02,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:02,193 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] [2023-12-15 23:41:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:41:02,193 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:02,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1055281537, now seen corresponding path program 1 times [2023-12-15 23:41:02,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918642374] [2023-12-15 23:41:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918642374] [2023-12-15 23:41:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918642374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:41:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371994971] [2023-12-15 23:41:02,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:02,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:41:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:41:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:41:02,405 INFO L87 Difference]: Start difference. First operand 7048 states and 10361 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 8 states have internal predecessors, (137), 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) [2023-12-15 23:41:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:02,843 INFO L93 Difference]: Finished difference Result 20717 states and 30465 transitions. [2023-12-15 23:41:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:41:02,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 8 states have internal predecessors, (137), 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 137 [2023-12-15 23:41:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:02,862 INFO L225 Difference]: With dead ends: 20717 [2023-12-15 23:41:02,863 INFO L226 Difference]: Without dead ends: 13981 [2023-12-15 23:41:02,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:41:02,869 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1922 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:02,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 599 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:41:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13981 states. [2023-12-15 23:41:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13981 to 7048. [2023-12-15 23:41:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 7047 states have (on average 1.4687100893997447) internal successors, (10350), 7047 states have internal predecessors, (10350), 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) [2023-12-15 23:41:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 10350 transitions. [2023-12-15 23:41:02,966 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 10350 transitions. Word has length 137 [2023-12-15 23:41:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:02,966 INFO L495 AbstractCegarLoop]: Abstraction has 7048 states and 10350 transitions. [2023-12-15 23:41:02,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 8 states have internal predecessors, (137), 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) [2023-12-15 23:41:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 10350 transitions. [2023-12-15 23:41:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-15 23:41:02,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:02,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:41:02,970 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:02,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 937223334, now seen corresponding path program 1 times [2023-12-15 23:41:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:02,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304040667] [2023-12-15 23:41:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:03,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:03,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304040667] [2023-12-15 23:41:03,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304040667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:03,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:03,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:41:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220723702] [2023-12-15 23:41:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:03,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:41:03,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:41:03,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:41:03,203 INFO L87 Difference]: Start difference. First operand 7048 states and 10350 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:03,653 INFO L93 Difference]: Finished difference Result 20801 states and 30565 transitions. [2023-12-15 23:41:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:41:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-15 23:41:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:03,671 INFO L225 Difference]: With dead ends: 20801 [2023-12-15 23:41:03,671 INFO L226 Difference]: Without dead ends: 14020 [2023-12-15 23:41:03,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:41:03,679 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1360 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:03,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 677 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:41:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14020 states. [2023-12-15 23:41:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14020 to 7024. [2023-12-15 23:41:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7024 states, 7023 states have (on average 1.468175993165314) internal successors, (10311), 7023 states have internal predecessors, (10311), 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) [2023-12-15 23:41:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7024 states to 7024 states and 10311 transitions. [2023-12-15 23:41:03,786 INFO L78 Accepts]: Start accepts. Automaton has 7024 states and 10311 transitions. Word has length 138 [2023-12-15 23:41:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:03,786 INFO L495 AbstractCegarLoop]: Abstraction has 7024 states and 10311 transitions. [2023-12-15 23:41:03,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:03,786 INFO L276 IsEmpty]: Start isEmpty. Operand 7024 states and 10311 transitions. [2023-12-15 23:41:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 23:41:03,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:03,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:03,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 23:41:03,788 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:03,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash 651741254, now seen corresponding path program 1 times [2023-12-15 23:41:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:03,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606493941] [2023-12-15 23:41:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:03,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606493941] [2023-12-15 23:41:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606493941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:04,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:04,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:41:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831199660] [2023-12-15 23:41:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:04,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:41:04,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:41:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:41:04,116 INFO L87 Difference]: Start difference. First operand 7024 states and 10311 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:05,058 INFO L93 Difference]: Finished difference Result 34505 states and 50448 transitions. [2023-12-15 23:41:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 23:41:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-15 23:41:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:05,088 INFO L225 Difference]: With dead ends: 34505 [2023-12-15 23:41:05,089 INFO L226 Difference]: Without dead ends: 27897 [2023-12-15 23:41:05,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-12-15 23:41:05,105 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 2415 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:05,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 1324 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:41:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27897 states. [2023-12-15 23:41:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27897 to 7199. [2023-12-15 23:41:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7199 states, 7198 states have (on average 1.4663795498749652) internal successors, (10555), 7198 states have internal predecessors, (10555), 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) [2023-12-15 23:41:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 10555 transitions. [2023-12-15 23:41:05,323 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 10555 transitions. Word has length 139 [2023-12-15 23:41:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:05,323 INFO L495 AbstractCegarLoop]: Abstraction has 7199 states and 10555 transitions. [2023-12-15 23:41:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 10555 transitions. [2023-12-15 23:41:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 23:41:05,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:05,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:05,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 23:41:05,325 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:05,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1119644133, now seen corresponding path program 1 times [2023-12-15 23:41:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821036003] [2023-12-15 23:41:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:05,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:05,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821036003] [2023-12-15 23:41:05,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821036003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:05,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 23:41:05,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972076809] [2023-12-15 23:41:05,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:05,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 23:41:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 23:41:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:41:05,695 INFO L87 Difference]: Start difference. First operand 7199 states and 10555 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:07,795 INFO L93 Difference]: Finished difference Result 123457 states and 181403 transitions. [2023-12-15 23:41:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-15 23:41:07,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-15 23:41:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:07,933 INFO L225 Difference]: With dead ends: 123457 [2023-12-15 23:41:07,934 INFO L226 Difference]: Without dead ends: 116646 [2023-12-15 23:41:07,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=570, Invalid=1880, Unknown=0, NotChecked=0, Total=2450 [2023-12-15 23:41:07,973 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 10573 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10573 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:07,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10573 Valid, 1334 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 23:41:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116646 states. [2023-12-15 23:41:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116646 to 7208. [2023-12-15 23:41:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 7207 states have (on average 1.4653808797002914) internal successors, (10561), 7207 states have internal predecessors, (10561), 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) [2023-12-15 23:41:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10561 transitions. [2023-12-15 23:41:08,702 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10561 transitions. Word has length 139 [2023-12-15 23:41:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:08,702 INFO L495 AbstractCegarLoop]: Abstraction has 7208 states and 10561 transitions. [2023-12-15 23:41:08,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10561 transitions. [2023-12-15 23:41:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 23:41:08,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:08,704 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] [2023-12-15 23:41:08,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 23:41:08,704 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:08,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1230510001, now seen corresponding path program 1 times [2023-12-15 23:41:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672350217] [2023-12-15 23:41:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:08,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:08,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:08,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672350217] [2023-12-15 23:41:08,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672350217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:08,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:08,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958368395] [2023-12-15 23:41:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:08,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:08,773 INFO L87 Difference]: Start difference. First operand 7208 states and 10561 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-12-15 23:41:08,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:08,814 INFO L93 Difference]: Finished difference Result 20016 states and 29527 transitions. [2023-12-15 23:41:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:08,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2023-12-15 23:41:08,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:08,829 INFO L225 Difference]: With dead ends: 20016 [2023-12-15 23:41:08,830 INFO L226 Difference]: Without dead ends: 13460 [2023-12-15 23:41:08,837 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 [2023-12-15 23:41:08,837 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 154 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:08,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 638 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2023-12-15 23:41:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 13154. [2023-12-15 23:41:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13154 states, 13153 states have (on average 1.4618718163156694) internal successors, (19228), 13153 states have internal predecessors, (19228), 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) [2023-12-15 23:41:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13154 states to 13154 states and 19228 transitions. [2023-12-15 23:41:08,974 INFO L78 Accepts]: Start accepts. Automaton has 13154 states and 19228 transitions. Word has length 140 [2023-12-15 23:41:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:08,974 INFO L495 AbstractCegarLoop]: Abstraction has 13154 states and 19228 transitions. [2023-12-15 23:41:08,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-12-15 23:41:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13154 states and 19228 transitions. [2023-12-15 23:41:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 23:41:08,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:08,976 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] [2023-12-15 23:41:08,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 23:41:08,976 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:08,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1966578033, now seen corresponding path program 1 times [2023-12-15 23:41:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672931982] [2023-12-15 23:41:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:08,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:09,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:09,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672931982] [2023-12-15 23:41:09,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672931982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:09,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:09,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:41:09,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035936736] [2023-12-15 23:41:09,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:09,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:41:09,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:41:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:41:09,387 INFO L87 Difference]: Start difference. First operand 13154 states and 19228 transitions. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 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) [2023-12-15 23:41:10,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:10,297 INFO L93 Difference]: Finished difference Result 32704 states and 47758 transitions. [2023-12-15 23:41:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 23:41:10,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 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 140 [2023-12-15 23:41:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:10,315 INFO L225 Difference]: With dead ends: 32704 [2023-12-15 23:41:10,315 INFO L226 Difference]: Without dead ends: 19932 [2023-12-15 23:41:10,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:41:10,328 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1582 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:10,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 1514 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:41:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19932 states. [2023-12-15 23:41:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19932 to 12970. [2023-12-15 23:41:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12970 states, 12969 states have (on average 1.4628730048577376) internal successors, (18972), 12969 states have internal predecessors, (18972), 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) [2023-12-15 23:41:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12970 states to 12970 states and 18972 transitions. [2023-12-15 23:41:10,503 INFO L78 Accepts]: Start accepts. Automaton has 12970 states and 18972 transitions. Word has length 140 [2023-12-15 23:41:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:10,504 INFO L495 AbstractCegarLoop]: Abstraction has 12970 states and 18972 transitions. [2023-12-15 23:41:10,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 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) [2023-12-15 23:41:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12970 states and 18972 transitions. [2023-12-15 23:41:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 23:41:10,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:10,505 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] [2023-12-15 23:41:10,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-15 23:41:10,506 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:10,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash -970739247, now seen corresponding path program 1 times [2023-12-15 23:41:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:10,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320323336] [2023-12-15 23:41:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320323336] [2023-12-15 23:41:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320323336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 23:41:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739482937] [2023-12-15 23:41:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:10,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 23:41:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 23:41:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:41:10,994 INFO L87 Difference]: Start difference. First operand 12970 states and 18972 transitions. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 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) [2023-12-15 23:41:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:13,899 INFO L93 Difference]: Finished difference Result 268140 states and 389248 transitions. [2023-12-15 23:41:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-15 23:41:13,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 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 140 [2023-12-15 23:41:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:14,186 INFO L225 Difference]: With dead ends: 268140 [2023-12-15 23:41:14,186 INFO L226 Difference]: Without dead ends: 255513 [2023-12-15 23:41:14,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=570, Invalid=1880, Unknown=0, NotChecked=0, Total=2450 [2023-12-15 23:41:14,235 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 5995 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5995 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:14,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5995 Valid, 2365 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 23:41:14,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255513 states. [2023-12-15 23:41:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255513 to 13003. [2023-12-15 23:41:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13003 states, 13002 states have (on average 1.4615443777880326) internal successors, (19003), 13002 states have internal predecessors, (19003), 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) [2023-12-15 23:41:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13003 states to 13003 states and 19003 transitions. [2023-12-15 23:41:15,526 INFO L78 Accepts]: Start accepts. Automaton has 13003 states and 19003 transitions. Word has length 140 [2023-12-15 23:41:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:15,527 INFO L495 AbstractCegarLoop]: Abstraction has 13003 states and 19003 transitions. [2023-12-15 23:41:15,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 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) [2023-12-15 23:41:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13003 states and 19003 transitions. [2023-12-15 23:41:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:41:15,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:15,529 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] [2023-12-15 23:41:15,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-15 23:41:15,529 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:15,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1797368422, now seen corresponding path program 1 times [2023-12-15 23:41:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583973928] [2023-12-15 23:41:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:15,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583973928] [2023-12-15 23:41:15,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583973928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:15,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:15,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:41:15,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631971722] [2023-12-15 23:41:15,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:15,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:41:15,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:15,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:41:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:41:15,815 INFO L87 Difference]: Start difference. First operand 13003 states and 19003 transitions. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 8 states have internal predecessors, (141), 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) [2023-12-15 23:41:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:16,337 INFO L93 Difference]: Finished difference Result 38496 states and 56245 transitions. [2023-12-15 23:41:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:41:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 8 states have internal predecessors, (141), 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 141 [2023-12-15 23:41:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:16,367 INFO L225 Difference]: With dead ends: 38496 [2023-12-15 23:41:16,367 INFO L226 Difference]: Without dead ends: 25934 [2023-12-15 23:41:16,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:41:16,381 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1700 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:16,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 656 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:41:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25934 states. [2023-12-15 23:41:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25934 to 13003. [2023-12-15 23:41:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13003 states, 13002 states have (on average 1.4603907091216737) internal successors, (18988), 13002 states have internal predecessors, (18988), 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) [2023-12-15 23:41:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13003 states to 13003 states and 18988 transitions. [2023-12-15 23:41:16,660 INFO L78 Accepts]: Start accepts. Automaton has 13003 states and 18988 transitions. Word has length 141 [2023-12-15 23:41:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:16,660 INFO L495 AbstractCegarLoop]: Abstraction has 13003 states and 18988 transitions. [2023-12-15 23:41:16,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 8 states have internal predecessors, (141), 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) [2023-12-15 23:41:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13003 states and 18988 transitions. [2023-12-15 23:41:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:16,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:16,662 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] [2023-12-15 23:41:16,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-15 23:41:16,662 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:16,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:16,663 INFO L85 PathProgramCache]: Analyzing trace with hash 147849508, now seen corresponding path program 1 times [2023-12-15 23:41:16,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:16,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507532837] [2023-12-15 23:41:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:17,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507532837] [2023-12-15 23:41:17,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507532837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:17,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:17,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:41:17,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668298429] [2023-12-15 23:41:17,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:17,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:41:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:41:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:41:17,133 INFO L87 Difference]: Start difference. First operand 13003 states and 18988 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:17,981 INFO L93 Difference]: Finished difference Result 53910 states and 78936 transitions. [2023-12-15 23:41:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:41:17,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:18,038 INFO L225 Difference]: With dead ends: 53910 [2023-12-15 23:41:18,039 INFO L226 Difference]: Without dead ends: 51168 [2023-12-15 23:41:18,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:41:18,057 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1844 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:18,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 3320 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:41:18,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51168 states. [2023-12-15 23:41:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51168 to 12944. [2023-12-15 23:41:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12944 states, 12943 states have (on average 1.4604805686471451) internal successors, (18903), 12943 states have internal predecessors, (18903), 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) [2023-12-15 23:41:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12944 states to 12944 states and 18903 transitions. [2023-12-15 23:41:18,425 INFO L78 Accepts]: Start accepts. Automaton has 12944 states and 18903 transitions. Word has length 142 [2023-12-15 23:41:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:18,425 INFO L495 AbstractCegarLoop]: Abstraction has 12944 states and 18903 transitions. [2023-12-15 23:41:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12944 states and 18903 transitions. [2023-12-15 23:41:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:18,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:18,426 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] [2023-12-15 23:41:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-15 23:41:18,427 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1595291582, now seen corresponding path program 1 times [2023-12-15 23:41:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755191283] [2023-12-15 23:41:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755191283] [2023-12-15 23:41:18,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755191283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:18,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:18,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:41:18,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009920774] [2023-12-15 23:41:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:18,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:41:18,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:41:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:41:18,998 INFO L87 Difference]: Start difference. First operand 12944 states and 18903 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:19,873 INFO L93 Difference]: Finished difference Result 53411 states and 78254 transitions. [2023-12-15 23:41:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:41:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:19,937 INFO L225 Difference]: With dead ends: 53411 [2023-12-15 23:41:19,937 INFO L226 Difference]: Without dead ends: 50741 [2023-12-15 23:41:19,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:41:19,956 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1537 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:19,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 3245 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:41:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50741 states. [2023-12-15 23:41:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50741 to 12926. [2023-12-15 23:41:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12926 states, 12925 states have (on average 1.4599613152804642) internal successors, (18870), 12925 states have internal predecessors, (18870), 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) [2023-12-15 23:41:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12926 states to 12926 states and 18870 transitions. [2023-12-15 23:41:20,382 INFO L78 Accepts]: Start accepts. Automaton has 12926 states and 18870 transitions. Word has length 142 [2023-12-15 23:41:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 12926 states and 18870 transitions. [2023-12-15 23:41:20,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 12926 states and 18870 transitions. [2023-12-15 23:41:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:20,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:20,383 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] [2023-12-15 23:41:20,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-15 23:41:20,384 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:20,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:20,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2041637916, now seen corresponding path program 1 times [2023-12-15 23:41:20,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:20,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468690434] [2023-12-15 23:41:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:20,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:20,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468690434] [2023-12-15 23:41:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468690434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:20,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:20,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-15 23:41:20,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607070276] [2023-12-15 23:41:20,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:20,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 23:41:20,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 23:41:20,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-15 23:41:20,868 INFO L87 Difference]: Start difference. First operand 12926 states and 18870 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 13 states have internal predecessors, (142), 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) [2023-12-15 23:41:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:21,968 INFO L93 Difference]: Finished difference Result 78265 states and 114745 transitions. [2023-12-15 23:41:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 23:41:21,969 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 13 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:21,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:22,045 INFO L225 Difference]: With dead ends: 78265 [2023-12-15 23:41:22,045 INFO L226 Difference]: Without dead ends: 75615 [2023-12-15 23:41:22,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2023-12-15 23:41:22,065 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1887 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:22,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 4389 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:41:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75615 states. [2023-12-15 23:41:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75615 to 12918. [2023-12-15 23:41:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12918 states, 12917 states have (on average 1.4593945962684833) internal successors, (18851), 12917 states have internal predecessors, (18851), 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) [2023-12-15 23:41:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12918 states to 12918 states and 18851 transitions. [2023-12-15 23:41:22,491 INFO L78 Accepts]: Start accepts. Automaton has 12918 states and 18851 transitions. Word has length 142 [2023-12-15 23:41:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:22,491 INFO L495 AbstractCegarLoop]: Abstraction has 12918 states and 18851 transitions. [2023-12-15 23:41:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 13 states have internal predecessors, (142), 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) [2023-12-15 23:41:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12918 states and 18851 transitions. [2023-12-15 23:41:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:22,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:22,493 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] [2023-12-15 23:41:22,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-15 23:41:22,493 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:22,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -378651802, now seen corresponding path program 1 times [2023-12-15 23:41:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:22,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596517112] [2023-12-15 23:41:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596517112] [2023-12-15 23:41:23,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596517112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:23,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:23,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:41:23,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300936252] [2023-12-15 23:41:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:41:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:41:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:41:23,055 INFO L87 Difference]: Start difference. First operand 12918 states and 18851 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:23,872 INFO L93 Difference]: Finished difference Result 53383 states and 78184 transitions. [2023-12-15 23:41:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:41:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:23,934 INFO L225 Difference]: With dead ends: 53383 [2023-12-15 23:41:23,934 INFO L226 Difference]: Without dead ends: 50693 [2023-12-15 23:41:23,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:41:23,951 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2341 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:23,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 2658 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:41:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50693 states. [2023-12-15 23:41:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50693 to 12890. [2023-12-15 23:41:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12890 states, 12889 states have (on average 1.4593839708278378) internal successors, (18810), 12889 states have internal predecessors, (18810), 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) [2023-12-15 23:41:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12890 states to 12890 states and 18810 transitions. [2023-12-15 23:41:24,265 INFO L78 Accepts]: Start accepts. Automaton has 12890 states and 18810 transitions. Word has length 142 [2023-12-15 23:41:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:24,265 INFO L495 AbstractCegarLoop]: Abstraction has 12890 states and 18810 transitions. [2023-12-15 23:41:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12890 states and 18810 transitions. [2023-12-15 23:41:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:24,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:24,267 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] [2023-12-15 23:41:24,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-15 23:41:24,267 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:24,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1142039143, now seen corresponding path program 1 times [2023-12-15 23:41:24,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:24,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243950387] [2023-12-15 23:41:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:25,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243950387] [2023-12-15 23:41:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243950387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:25,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:25,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-15 23:41:25,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969470710] [2023-12-15 23:41:25,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:25,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 23:41:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 23:41:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:41:25,301 INFO L87 Difference]: Start difference. First operand 12890 states and 18810 transitions. Second operand has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 18 states have internal predecessors, (142), 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) [2023-12-15 23:41:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:27,656 INFO L93 Difference]: Finished difference Result 64134 states and 93926 transitions. [2023-12-15 23:41:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 23:41:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 18 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:27,728 INFO L225 Difference]: With dead ends: 64134 [2023-12-15 23:41:27,729 INFO L226 Difference]: Without dead ends: 61444 [2023-12-15 23:41:27,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=393, Invalid=1499, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 23:41:27,749 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 3033 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 6174 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:27,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 6174 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 23:41:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61444 states. [2023-12-15 23:41:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61444 to 12885. [2023-12-15 23:41:28,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12885 states, 12884 states have (on average 1.4593294008072026) internal successors, (18802), 12884 states have internal predecessors, (18802), 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) [2023-12-15 23:41:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 18802 transitions. [2023-12-15 23:41:28,139 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 18802 transitions. Word has length 142 [2023-12-15 23:41:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:28,139 INFO L495 AbstractCegarLoop]: Abstraction has 12885 states and 18802 transitions. [2023-12-15 23:41:28,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 18 states have internal predecessors, (142), 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) [2023-12-15 23:41:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 18802 transitions. [2023-12-15 23:41:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:28,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:28,141 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] [2023-12-15 23:41:28,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-15 23:41:28,141 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:28,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1841542113, now seen corresponding path program 1 times [2023-12-15 23:41:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267831558] [2023-12-15 23:41:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:28,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:28,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267831558] [2023-12-15 23:41:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267831558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:28,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:28,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:41:28,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691808814] [2023-12-15 23:41:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:28,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:41:28,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:41:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:41:28,367 INFO L87 Difference]: Start difference. First operand 12885 states and 18802 transitions. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 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) [2023-12-15 23:41:28,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:28,984 INFO L93 Difference]: Finished difference Result 38340 states and 55988 transitions. [2023-12-15 23:41:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:41:28,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:29,012 INFO L225 Difference]: With dead ends: 38340 [2023-12-15 23:41:29,012 INFO L226 Difference]: Without dead ends: 25757 [2023-12-15 23:41:29,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:41:29,022 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 1216 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:29,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 833 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:41:29,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25757 states. [2023-12-15 23:41:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25757 to 12867. [2023-12-15 23:41:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12866 states have (on average 1.4592725011658636) internal successors, (18775), 12866 states have internal predecessors, (18775), 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) [2023-12-15 23:41:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 18775 transitions. [2023-12-15 23:41:29,202 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 18775 transitions. Word has length 142 [2023-12-15 23:41:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:29,202 INFO L495 AbstractCegarLoop]: Abstraction has 12867 states and 18775 transitions. [2023-12-15 23:41:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 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) [2023-12-15 23:41:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 18775 transitions. [2023-12-15 23:41:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:29,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:29,203 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] [2023-12-15 23:41:29,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-15 23:41:29,203 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:29,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1433676055, now seen corresponding path program 1 times [2023-12-15 23:41:29,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:29,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971243876] [2023-12-15 23:41:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:29,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971243876] [2023-12-15 23:41:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971243876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-15 23:41:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202317570] [2023-12-15 23:41:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:29,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 23:41:29,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 23:41:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-15 23:41:29,624 INFO L87 Difference]: Start difference. First operand 12867 states and 18775 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 13 states have internal predecessors, (142), 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) [2023-12-15 23:41:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:30,597 INFO L93 Difference]: Finished difference Result 44613 states and 65329 transitions. [2023-12-15 23:41:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 23:41:30,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 13 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:30,642 INFO L225 Difference]: With dead ends: 44613 [2023-12-15 23:41:30,643 INFO L226 Difference]: Without dead ends: 41869 [2023-12-15 23:41:30,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2023-12-15 23:41:30,660 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 2466 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:30,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 4576 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:41:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41869 states. [2023-12-15 23:41:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41869 to 12776. [2023-12-15 23:41:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12776 states, 12775 states have (on average 1.4609001956947163) internal successors, (18663), 12775 states have internal predecessors, (18663), 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) [2023-12-15 23:41:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12776 states to 12776 states and 18663 transitions. [2023-12-15 23:41:31,009 INFO L78 Accepts]: Start accepts. Automaton has 12776 states and 18663 transitions. Word has length 142 [2023-12-15 23:41:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:31,009 INFO L495 AbstractCegarLoop]: Abstraction has 12776 states and 18663 transitions. [2023-12-15 23:41:31,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 13 states have internal predecessors, (142), 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) [2023-12-15 23:41:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 12776 states and 18663 transitions. [2023-12-15 23:41:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 23:41:31,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:31,010 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] [2023-12-15 23:41:31,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-15 23:41:31,010 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:31,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1188177002, now seen corresponding path program 1 times [2023-12-15 23:41:31,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542248227] [2023-12-15 23:41:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:31,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:31,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542248227] [2023-12-15 23:41:31,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542248227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:31,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:31,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:41:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178463296] [2023-12-15 23:41:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:31,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:41:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:41:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:41:31,451 INFO L87 Difference]: Start difference. First operand 12776 states and 18663 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:32,361 INFO L93 Difference]: Finished difference Result 44550 states and 65219 transitions. [2023-12-15 23:41:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 23:41:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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 142 [2023-12-15 23:41:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:32,408 INFO L225 Difference]: With dead ends: 44550 [2023-12-15 23:41:32,409 INFO L226 Difference]: Without dead ends: 41916 [2023-12-15 23:41:32,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2023-12-15 23:41:32,424 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 2387 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:32,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 3723 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:41:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41916 states. [2023-12-15 23:41:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41916 to 12788. [2023-12-15 23:41:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12788 states, 12787 states have (on average 1.460936889027919) internal successors, (18681), 12787 states have internal predecessors, (18681), 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) [2023-12-15 23:41:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12788 states to 12788 states and 18681 transitions. [2023-12-15 23:41:32,676 INFO L78 Accepts]: Start accepts. Automaton has 12788 states and 18681 transitions. Word has length 142 [2023-12-15 23:41:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:32,677 INFO L495 AbstractCegarLoop]: Abstraction has 12788 states and 18681 transitions. [2023-12-15 23:41:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 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) [2023-12-15 23:41:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 12788 states and 18681 transitions. [2023-12-15 23:41:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 23:41:32,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:32,678 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] [2023-12-15 23:41:32,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-15 23:41:32,678 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:32,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1624071080, now seen corresponding path program 1 times [2023-12-15 23:41:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:32,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284810944] [2023-12-15 23:41:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284810944] [2023-12-15 23:41:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284810944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:32,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:41:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621288813] [2023-12-15 23:41:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:41:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:41:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:32,780 INFO L87 Difference]: Start difference. First operand 12788 states and 18681 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2023-12-15 23:41:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:32,842 INFO L93 Difference]: Finished difference Result 31018 states and 45465 transitions. [2023-12-15 23:41:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:32,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 143 [2023-12-15 23:41:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:32,860 INFO L225 Difference]: With dead ends: 31018 [2023-12-15 23:41:32,861 INFO L226 Difference]: Without dead ends: 18516 [2023-12-15 23:41:32,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:32,871 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 135 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:32,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 783 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18516 states. [2023-12-15 23:41:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18516 to 18514. [2023-12-15 23:41:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18514 states, 18513 states have (on average 1.4582725652244368) internal successors, (26997), 18513 states have internal predecessors, (26997), 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) [2023-12-15 23:41:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18514 states to 18514 states and 26997 transitions. [2023-12-15 23:41:33,041 INFO L78 Accepts]: Start accepts. Automaton has 18514 states and 26997 transitions. Word has length 143 [2023-12-15 23:41:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:33,041 INFO L495 AbstractCegarLoop]: Abstraction has 18514 states and 26997 transitions. [2023-12-15 23:41:33,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2023-12-15 23:41:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18514 states and 26997 transitions. [2023-12-15 23:41:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 23:41:33,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:33,042 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] [2023-12-15 23:41:33,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-15 23:41:33,042 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:33,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:33,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1288196466, now seen corresponding path program 1 times [2023-12-15 23:41:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104525083] [2023-12-15 23:41:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:33,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:33,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104525083] [2023-12-15 23:41:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104525083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:33,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 23:41:33,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912132845] [2023-12-15 23:41:33,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:33,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:41:33,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:41:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:41:33,376 INFO L87 Difference]: Start difference. First operand 18514 states and 26997 transitions. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 10 states have internal predecessors, (143), 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) [2023-12-15 23:41:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:34,017 INFO L93 Difference]: Finished difference Result 64380 states and 94259 transitions. [2023-12-15 23:41:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 23:41:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 10 states have internal predecessors, (143), 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 143 [2023-12-15 23:41:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:34,091 INFO L225 Difference]: With dead ends: 64380 [2023-12-15 23:41:34,091 INFO L226 Difference]: Without dead ends: 61050 [2023-12-15 23:41:34,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:41:34,115 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1626 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:34,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 2147 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:41:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61050 states. [2023-12-15 23:41:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61050 to 18136. [2023-12-15 23:41:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18136 states, 18135 states have (on average 1.4592776399228011) internal successors, (26464), 18135 states have internal predecessors, (26464), 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) [2023-12-15 23:41:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18136 states to 18136 states and 26464 transitions. [2023-12-15 23:41:34,550 INFO L78 Accepts]: Start accepts. Automaton has 18136 states and 26464 transitions. Word has length 143 [2023-12-15 23:41:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:34,550 INFO L495 AbstractCegarLoop]: Abstraction has 18136 states and 26464 transitions. [2023-12-15 23:41:34,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 10 states have internal predecessors, (143), 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) [2023-12-15 23:41:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 18136 states and 26464 transitions. [2023-12-15 23:41:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-15 23:41:34,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:34,551 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] [2023-12-15 23:41:34,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-15 23:41:34,552 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:34,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1893643882, now seen corresponding path program 1 times [2023-12-15 23:41:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571669658] [2023-12-15 23:41:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571669658] [2023-12-15 23:41:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571669658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:35,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-15 23:41:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270719155] [2023-12-15 23:41:35,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:35,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 23:41:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:35,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 23:41:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-15 23:41:35,406 INFO L87 Difference]: Start difference. First operand 18136 states and 26464 transitions. Second operand has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 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) [2023-12-15 23:41:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:37,432 INFO L93 Difference]: Finished difference Result 75916 states and 111000 transitions. [2023-12-15 23:41:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 23:41:37,433 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 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 144 [2023-12-15 23:41:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:37,516 INFO L225 Difference]: With dead ends: 75916 [2023-12-15 23:41:37,516 INFO L226 Difference]: Without dead ends: 71960 [2023-12-15 23:41:37,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=338, Invalid=1222, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 23:41:37,541 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 1547 mSDsluCounter, 5429 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:37,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 6066 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:41:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71960 states. Received shutdown request... [2023-12-15 23:41:37,820 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:41:37,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-15 23:41:37,820 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 23:41:37,823 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-15 23:41:37,825 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:41:37,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:41:37 BoogieIcfgContainer [2023-12-15 23:41:37,826 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:41:37,826 INFO L158 Benchmark]: Toolchain (without parser) took 52189.96ms. Allocated memory was 202.4MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 147.0MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 23:41:37,827 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 202.4MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:41:37,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.20ms. Allocated memory is still 202.4MB. Free memory was 146.7MB in the beginning and 168.9MB in the end (delta: -22.2MB). Peak memory consumption was 32.2MB. Max. memory is 8.0GB. [2023-12-15 23:41:37,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.61ms. Allocated memory is still 202.4MB. Free memory was 168.9MB in the beginning and 164.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 23:41:37,827 INFO L158 Benchmark]: Boogie Preprocessor took 59.28ms. Allocated memory is still 202.4MB. Free memory was 164.7MB in the beginning and 159.5MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 23:41:37,827 INFO L158 Benchmark]: RCFGBuilder took 854.90ms. Allocated memory is still 202.4MB. Free memory was 159.5MB in the beginning and 90.8MB in the end (delta: 68.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-15 23:41:37,827 INFO L158 Benchmark]: TraceAbstraction took 50700.44ms. Allocated memory was 202.4MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 90.3MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 23:41:37,828 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 202.4MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 515.20ms. Allocated memory is still 202.4MB. Free memory was 146.7MB in the beginning and 168.9MB in the end (delta: -22.2MB). Peak memory consumption was 32.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.61ms. Allocated memory is still 202.4MB. Free memory was 168.9MB in the beginning and 164.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.28ms. Allocated memory is still 202.4MB. Free memory was 164.7MB in the beginning and 159.5MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 854.90ms. Allocated memory is still 202.4MB. Free memory was 159.5MB in the beginning and 90.8MB in the end (delta: 68.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * TraceAbstraction took 50700.44ms. Allocated memory was 202.4MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 90.3MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 633]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 633). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.7s, OverallIterations: 43, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93252 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93252 mSDsluCounter, 94175 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76935 mSDsCounter, 254 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21649 IncrementalHoareTripleChecker+Invalid, 21903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 254 mSolverCounterUnsat, 17240 mSDtfsCounter, 21649 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 770 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3544 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18514occurred in iteration=41, InterpolantAutomatonStates: 565, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 43 MinimizatonAttempts, 831901 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 5787 NumberOfCodeBlocks, 5787 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 5744 ConstructedInterpolants, 0 QuantifiedInterpolants, 64427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available [2023-12-15 23:41:37,832 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown