/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/eca-rers2012/Problem17_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:33:42,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:33:42,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:33:42,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:33:42,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:33:42,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:33:42,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:33:42,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:33:42,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:33:42,648 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:33:42,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:33:42,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:33:42,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:33:42,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:33:42,650 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:33:42,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:33:42,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:33:42,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:33:42,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:33:42,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:33:42,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:33:42,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:33:42,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:33:42,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:33:42,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:33:42,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:33:42,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:33:42,652 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:33:42,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:33:42,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:33:42,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:33:42,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:33:42,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:33:42,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:33:42,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:33:42,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:33:42,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:33:42,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:33:42,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:33:42,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:33:42,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:33:42,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:33:42,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:33:42,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:33:42,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:33:42,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:33:42,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:33:42,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:33:42,861 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:33:42,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2023-12-19 04:33:43,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:33:44,293 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:33:44,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2023-12-19 04:33:44,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf6d747c/b3d72577b48843f097773f766c759e8b/FLAGec2a3e82f [2023-12-19 04:33:44,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf6d747c/b3d72577b48843f097773f766c759e8b [2023-12-19 04:33:44,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:33:44,329 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:33:44,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:33:44,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:33:44,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:33:44,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:33:44" (1/1) ... [2023-12-19 04:33:44,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a176a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:44, skipping insertion in model container [2023-12-19 04:33:44,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:33:44" (1/1) ... [2023-12-19 04:33:44,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:33:44,593 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47.c[6608,6621] [2023-12-19 04:33:45,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:33:45,020 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:33:45,038 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47.c[6608,6621] [2023-12-19 04:33:45,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:33:45,278 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:33:45,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45 WrapperNode [2023-12-19 04:33:45,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:33:45,280 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:33:45,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:33:45,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:33:45,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,599 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:33:45,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:33:45,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:33:45,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:33:45,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:33:45,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,749 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]. [2023-12-19 04:33:45,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:33:45,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:33:45,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:33:45,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:33:45,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (1/1) ... [2023-12-19 04:33:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:33:45,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:33:46,004 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) [2023-12-19 04:33:46,024 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 [2023-12-19 04:33:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:33:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:33:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:33:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:33:46,093 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:33:46,094 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:33:48,385 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:33:48,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:33:48,428 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:33:48,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:33:48 BoogieIcfgContainer [2023-12-19 04:33:48,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:33:48,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:33:48,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:33:48,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:33:48,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:33:44" (1/3) ... [2023-12-19 04:33:48,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77711b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:33:48, skipping insertion in model container [2023-12-19 04:33:48,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:33:45" (2/3) ... [2023-12-19 04:33:48,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77711b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:33:48, skipping insertion in model container [2023-12-19 04:33:48,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:33:48" (3/3) ... [2023-12-19 04:33:48,435 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2023-12-19 04:33:48,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:33:48,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:33:48,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:33:48,516 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;@73b88434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:33:48,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:33:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 04:33:48,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:48,527 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] [2023-12-19 04:33:48,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:48,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 676865586, now seen corresponding path program 1 times [2023-12-19 04:33:48,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:48,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902001950] [2023-12-19 04:33:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:48,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:33:48,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902001950] [2023-12-19 04:33:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902001950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:48,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:48,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:33:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464547709] [2023-12-19 04:33:48,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:33:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:33:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:33:48,666 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:48,759 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:33:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:33:48,761 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 04:33:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:48,780 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:33:48,781 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:33:48,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:33:48,786 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:48,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:33:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:33:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:33:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:33:48,846 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 43 [2023-12-19 04:33:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:48,846 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:33:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:33:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 04:33:48,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:48,847 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] [2023-12-19 04:33:48,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:33:48,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:48,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -922284342, now seen corresponding path program 1 times [2023-12-19 04:33:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:48,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001653865] [2023-12-19 04:33:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:33:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001653865] [2023-12-19 04:33:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001653865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:49,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:49,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:33:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65898023] [2023-12-19 04:33:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:33:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:33:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:33:49,012 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:51,210 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-19 04:33:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:33:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 04:33:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:51,215 INFO L225 Difference]: With dead ends: 1501 [2023-12-19 04:33:51,215 INFO L226 Difference]: Without dead ends: 976 [2023-12-19 04:33:51,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:33:51,217 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 428 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:51,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:33:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-19 04:33:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-19 04:33:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-19 04:33:51,234 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 43 [2023-12-19 04:33:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:51,234 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-19 04:33:51,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-19 04:33:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 04:33:51,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:51,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:33:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:33:51,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:51,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1374818798, now seen corresponding path program 1 times [2023-12-19 04:33:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142110652] [2023-12-19 04:33:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:33:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142110652] [2023-12-19 04:33:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142110652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:51,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:33:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602632760] [2023-12-19 04:33:51,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:51,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:33:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:33:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:33:51,428 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:53,524 INFO L93 Difference]: Finished difference Result 2814 states and 4381 transitions. [2023-12-19 04:33:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:33:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-19 04:33:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:53,530 INFO L225 Difference]: With dead ends: 2814 [2023-12-19 04:33:53,530 INFO L226 Difference]: Without dead ends: 1845 [2023-12-19 04:33:53,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:33:53,536 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:53,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 578 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:33:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2023-12-19 04:33:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1840. [2023-12-19 04:33:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1839 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2484 transitions. [2023-12-19 04:33:53,573 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2484 transitions. Word has length 110 [2023-12-19 04:33:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:53,577 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2484 transitions. [2023-12-19 04:33:53,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2484 transitions. [2023-12-19 04:33:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 04:33:53,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:53,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:33:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:33:53,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:53,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash 366740150, now seen corresponding path program 1 times [2023-12-19 04:33:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:53,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336660631] [2023-12-19 04:33:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:53,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:33:53,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:53,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336660631] [2023-12-19 04:33:53,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336660631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:53,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:53,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:33:53,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262557755] [2023-12-19 04:33:53,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:53,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:33:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:33:53,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:33:53,831 INFO L87 Difference]: Start difference. First operand 1840 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:57,215 INFO L93 Difference]: Finished difference Result 5864 states and 8158 transitions. [2023-12-19 04:33:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:33:57,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-19 04:33:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:57,227 INFO L225 Difference]: With dead ends: 5864 [2023-12-19 04:33:57,227 INFO L226 Difference]: Without dead ends: 4025 [2023-12-19 04:33:57,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:33:57,230 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 937 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:57,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 437 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 04:33:57,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2023-12-19 04:33:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 4019. [2023-12-19 04:33:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 4018 states have (on average 1.3265306122448979) internal successors, (5330), 4018 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5330 transitions. [2023-12-19 04:33:57,282 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5330 transitions. Word has length 113 [2023-12-19 04:33:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:57,284 INFO L495 AbstractCegarLoop]: Abstraction has 4019 states and 5330 transitions. [2023-12-19 04:33:57,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5330 transitions. [2023-12-19 04:33:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 04:33:57,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:57,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:33:57,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:33:57,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:57,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash 572554155, now seen corresponding path program 1 times [2023-12-19 04:33:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214052549] [2023-12-19 04:33:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:57,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 04:33:57,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:57,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214052549] [2023-12-19 04:33:57,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214052549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:33:57,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514121807] [2023-12-19 04:33:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:57,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:33:57,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:33:57,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:33:57,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:33:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:57,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:33:57,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:33:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-19 04:33:57,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:33:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514121807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:57,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:33:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:33:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204944929] [2023-12-19 04:33:57,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:57,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:33:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:33:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:33:57,781 INFO L87 Difference]: Start difference. First operand 4019 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:59,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:59,525 INFO L93 Difference]: Finished difference Result 10594 states and 14359 transitions. [2023-12-19 04:33:59,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:33:59,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 178 [2023-12-19 04:33:59,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:59,546 INFO L225 Difference]: With dead ends: 10594 [2023-12-19 04:33:59,546 INFO L226 Difference]: Without dead ends: 7001 [2023-12-19 04:33:59,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:33:59,553 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 563 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:59,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 715 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:33:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2023-12-19 04:33:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 6575. [2023-12-19 04:33:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.3544265287496198) internal successors, (8904), 6574 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 8904 transitions. [2023-12-19 04:33:59,652 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 8904 transitions. Word has length 178 [2023-12-19 04:33:59,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:59,653 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 8904 transitions. [2023-12-19 04:33:59,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:33:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 8904 transitions. [2023-12-19 04:33:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-19 04:33:59,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:59,656 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:33:59,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 04:33:59,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:33:59,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:59,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1950412695, now seen corresponding path program 1 times [2023-12-19 04:33:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:59,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344765126] [2023-12-19 04:33:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-19 04:33:59,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344765126] [2023-12-19 04:33:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344765126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:59,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:33:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889080344] [2023-12-19 04:33:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:33:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:59,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:33:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:33:59,996 INFO L87 Difference]: Start difference. First operand 6575 states and 8904 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:01,727 INFO L93 Difference]: Finished difference Result 13149 states and 17885 transitions. [2023-12-19 04:34:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 186 [2023-12-19 04:34:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:01,745 INFO L225 Difference]: With dead ends: 13149 [2023-12-19 04:34:01,745 INFO L226 Difference]: Without dead ends: 6571 [2023-12-19 04:34:01,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:01,751 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 381 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:01,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 581 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:34:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2023-12-19 04:34:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5293. [2023-12-19 04:34:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 1.219198790627362) internal successors, (6452), 5292 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 6452 transitions. [2023-12-19 04:34:01,852 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 6452 transitions. Word has length 186 [2023-12-19 04:34:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:01,853 INFO L495 AbstractCegarLoop]: Abstraction has 5293 states and 6452 transitions. [2023-12-19 04:34:01,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 6452 transitions. [2023-12-19 04:34:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 04:34:01,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:01,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:01,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:34:01,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:01,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2029059485, now seen corresponding path program 1 times [2023-12-19 04:34:01,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:01,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201053176] [2023-12-19 04:34:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:34:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201053176] [2023-12-19 04:34:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201053176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:02,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918212533] [2023-12-19 04:34:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:02,002 INFO L87 Difference]: Start difference. First operand 5293 states and 6452 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:03,479 INFO L93 Difference]: Finished difference Result 13142 states and 16405 transitions. [2023-12-19 04:34:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:03,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-19 04:34:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:03,505 INFO L225 Difference]: With dead ends: 13142 [2023-12-19 04:34:03,505 INFO L226 Difference]: Without dead ends: 7850 [2023-12-19 04:34:03,509 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 [2023-12-19 04:34:03,509 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 491 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:03,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 799 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:34:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7850 states. [2023-12-19 04:34:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7850 to 7850. [2023-12-19 04:34:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7850 states, 7849 states have (on average 1.2065231239648362) internal successors, (9470), 7849 states have internal predecessors, (9470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 9470 transitions. [2023-12-19 04:34:03,692 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 9470 transitions. Word has length 199 [2023-12-19 04:34:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:03,692 INFO L495 AbstractCegarLoop]: Abstraction has 7850 states and 9470 transitions. [2023-12-19 04:34:03,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 9470 transitions. [2023-12-19 04:34:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 04:34:03,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:03,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:03,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:34:03,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:03,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1810310512, now seen corresponding path program 1 times [2023-12-19 04:34:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:03,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127491448] [2023-12-19 04:34:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:03,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-12-19 04:34:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127491448] [2023-12-19 04:34:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127491448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:04,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:04,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932845117] [2023-12-19 04:34:04,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:04,016 INFO L87 Difference]: Start difference. First operand 7850 states and 9470 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2023-12-19 04:34:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:06,503 INFO L93 Difference]: Finished difference Result 22990 states and 27753 transitions. [2023-12-19 04:34:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:06,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 295 [2023-12-19 04:34:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:06,531 INFO L225 Difference]: With dead ends: 22990 [2023-12-19 04:34:06,531 INFO L226 Difference]: Without dead ends: 15141 [2023-12-19 04:34:06,542 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 [2023-12-19 04:34:06,543 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 462 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:06,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 914 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:34:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15141 states. [2023-12-19 04:34:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15141 to 12987. [2023-12-19 04:34:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12987 states, 12986 states have (on average 1.2240104728168797) internal successors, (15895), 12986 states have internal predecessors, (15895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12987 states to 12987 states and 15895 transitions. [2023-12-19 04:34:06,743 INFO L78 Accepts]: Start accepts. Automaton has 12987 states and 15895 transitions. Word has length 295 [2023-12-19 04:34:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:06,743 INFO L495 AbstractCegarLoop]: Abstraction has 12987 states and 15895 transitions. [2023-12-19 04:34:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2023-12-19 04:34:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12987 states and 15895 transitions. [2023-12-19 04:34:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 04:34:06,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:06,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:06,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:34:06,746 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:06,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1792699051, now seen corresponding path program 1 times [2023-12-19 04:34:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670960607] [2023-12-19 04:34:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:06,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-19 04:34:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670960607] [2023-12-19 04:34:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670960607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:06,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945296027] [2023-12-19 04:34:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:06,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:06,876 INFO L87 Difference]: Start difference. First operand 12987 states and 15895 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:08,702 INFO L93 Difference]: Finished difference Result 31486 states and 38491 transitions. [2023-12-19 04:34:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 296 [2023-12-19 04:34:08,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:08,728 INFO L225 Difference]: With dead ends: 31486 [2023-12-19 04:34:08,728 INFO L226 Difference]: Without dead ends: 17650 [2023-12-19 04:34:08,738 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 [2023-12-19 04:34:08,740 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 400 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:08,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 943 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:34:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2023-12-19 04:34:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 12113. [2023-12-19 04:34:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12113 states, 12112 states have (on average 1.1775924702774108) internal successors, (14263), 12112 states have internal predecessors, (14263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12113 states to 12113 states and 14263 transitions. [2023-12-19 04:34:08,875 INFO L78 Accepts]: Start accepts. Automaton has 12113 states and 14263 transitions. Word has length 296 [2023-12-19 04:34:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:08,876 INFO L495 AbstractCegarLoop]: Abstraction has 12113 states and 14263 transitions. [2023-12-19 04:34:08,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12113 states and 14263 transitions. [2023-12-19 04:34:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-19 04:34:08,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:08,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:08,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:34:08,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:08,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1012161555, now seen corresponding path program 1 times [2023-12-19 04:34:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883887543] [2023-12-19 04:34:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-19 04:34:09,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:09,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883887543] [2023-12-19 04:34:09,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883887543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:09,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:09,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523237707] [2023-12-19 04:34:09,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:09,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:09,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:09,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:09,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:09,022 INFO L87 Difference]: Start difference. First operand 12113 states and 14263 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:10,817 INFO L93 Difference]: Finished difference Result 31030 states and 36607 transitions. [2023-12-19 04:34:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 313 [2023-12-19 04:34:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:10,843 INFO L225 Difference]: With dead ends: 31030 [2023-12-19 04:34:10,843 INFO L226 Difference]: Without dead ends: 18918 [2023-12-19 04:34:10,856 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 [2023-12-19 04:34:10,857 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 447 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:10,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 399 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:34:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18918 states. [2023-12-19 04:34:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18918 to 16785. [2023-12-19 04:34:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16785 states, 16784 states have (on average 1.1661105815061963) internal successors, (19572), 16784 states have internal predecessors, (19572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16785 states to 16785 states and 19572 transitions. [2023-12-19 04:34:11,075 INFO L78 Accepts]: Start accepts. Automaton has 16785 states and 19572 transitions. Word has length 313 [2023-12-19 04:34:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:11,076 INFO L495 AbstractCegarLoop]: Abstraction has 16785 states and 19572 transitions. [2023-12-19 04:34:11,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 16785 states and 19572 transitions. [2023-12-19 04:34:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-19 04:34:11,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:11,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:11,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:34:11,083 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:11,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash -171712320, now seen corresponding path program 1 times [2023-12-19 04:34:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981338014] [2023-12-19 04:34:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-19 04:34:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:11,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981338014] [2023-12-19 04:34:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981338014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:11,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:11,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284748314] [2023-12-19 04:34:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:11,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:11,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:11,427 INFO L87 Difference]: Start difference. First operand 16785 states and 19572 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:13,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:13,205 INFO L93 Difference]: Finished difference Result 41262 states and 48253 transitions. [2023-12-19 04:34:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:13,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 357 [2023-12-19 04:34:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:13,237 INFO L225 Difference]: With dead ends: 41262 [2023-12-19 04:34:13,238 INFO L226 Difference]: Without dead ends: 23614 [2023-12-19 04:34:13,256 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 [2023-12-19 04:34:13,256 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 480 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:13,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 791 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:34:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23614 states. [2023-12-19 04:34:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23614 to 21054. [2023-12-19 04:34:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21054 states, 21053 states have (on average 1.1651546097943286) internal successors, (24530), 21053 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21054 states to 21054 states and 24530 transitions. [2023-12-19 04:34:13,488 INFO L78 Accepts]: Start accepts. Automaton has 21054 states and 24530 transitions. Word has length 357 [2023-12-19 04:34:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 21054 states and 24530 transitions. [2023-12-19 04:34:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21054 states and 24530 transitions. [2023-12-19 04:34:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 04:34:13,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:13,496 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:34:13,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:13,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:13,497 INFO L85 PathProgramCache]: Analyzing trace with hash 544855260, now seen corresponding path program 1 times [2023-12-19 04:34:13,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:13,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219577179] [2023-12-19 04:34:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:13,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-19 04:34:13,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:13,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219577179] [2023-12-19 04:34:13,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219577179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:13,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:13,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:34:13,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809167649] [2023-12-19 04:34:13,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:13,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:34:13,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:34:13,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:34:13,981 INFO L87 Difference]: Start difference. First operand 21054 states and 24530 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:16,755 INFO L93 Difference]: Finished difference Result 61314 states and 70812 transitions. [2023-12-19 04:34:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:34:16,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 365 [2023-12-19 04:34:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:16,799 INFO L225 Difference]: With dead ends: 61314 [2023-12-19 04:34:16,799 INFO L226 Difference]: Without dead ends: 39836 [2023-12-19 04:34:16,818 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 [2023-12-19 04:34:16,819 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 915 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:16,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 193 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:34:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39836 states. [2023-12-19 04:34:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39836 to 26621. [2023-12-19 04:34:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26621 states, 26620 states have (on average 1.1669797145003757) internal successors, (31065), 26620 states have internal predecessors, (31065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26621 states to 26621 states and 31065 transitions. [2023-12-19 04:34:17,210 INFO L78 Accepts]: Start accepts. Automaton has 26621 states and 31065 transitions. Word has length 365 [2023-12-19 04:34:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:17,211 INFO L495 AbstractCegarLoop]: Abstraction has 26621 states and 31065 transitions. [2023-12-19 04:34:17,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 26621 states and 31065 transitions. [2023-12-19 04:34:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 04:34:17,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:17,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:17,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:34:17,219 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:17,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1165789282, now seen corresponding path program 1 times [2023-12-19 04:34:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:17,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687093455] [2023-12-19 04:34:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:17,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-19 04:34:17,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:17,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687093455] [2023-12-19 04:34:17,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687093455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:17,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:17,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22314514] [2023-12-19 04:34:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:17,464 INFO L87 Difference]: Start difference. First operand 26621 states and 31065 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:19,093 INFO L93 Difference]: Finished difference Result 64379 states and 75688 transitions. [2023-12-19 04:34:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 385 [2023-12-19 04:34:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:19,135 INFO L225 Difference]: With dead ends: 64379 [2023-12-19 04:34:19,135 INFO L226 Difference]: Without dead ends: 36909 [2023-12-19 04:34:19,188 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 [2023-12-19 04:34:19,189 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 378 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:19,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 879 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:34:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36909 states. [2023-12-19 04:34:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36909 to 36045. [2023-12-19 04:34:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36045 states, 36044 states have (on average 1.144101653534569) internal successors, (41238), 36044 states have internal predecessors, (41238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36045 states to 36045 states and 41238 transitions. [2023-12-19 04:34:20,264 INFO L78 Accepts]: Start accepts. Automaton has 36045 states and 41238 transitions. Word has length 385 [2023-12-19 04:34:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:20,265 INFO L495 AbstractCegarLoop]: Abstraction has 36045 states and 41238 transitions. [2023-12-19 04:34:20,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 36045 states and 41238 transitions. [2023-12-19 04:34:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-19 04:34:20,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:20,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:20,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:34:20,282 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:20,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:20,284 INFO L85 PathProgramCache]: Analyzing trace with hash 670029058, now seen corresponding path program 1 times [2023-12-19 04:34:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:20,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89434450] [2023-12-19 04:34:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:34:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89434450] [2023-12-19 04:34:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89434450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095154792] [2023-12-19 04:34:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:20,622 INFO L87 Difference]: Start difference. First operand 36045 states and 41238 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:22,347 INFO L93 Difference]: Finished difference Result 82756 states and 94614 transitions. [2023-12-19 04:34:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 432 [2023-12-19 04:34:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:22,494 INFO L225 Difference]: With dead ends: 82756 [2023-12-19 04:34:22,494 INFO L226 Difference]: Without dead ends: 45425 [2023-12-19 04:34:22,506 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 [2023-12-19 04:34:22,507 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 318 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:22,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 735 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:34:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45425 states. [2023-12-19 04:34:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45425 to 36037. [2023-12-19 04:34:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36037 states, 36036 states have (on average 1.141081141081141) internal successors, (41120), 36036 states have internal predecessors, (41120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36037 states to 36037 states and 41120 transitions. [2023-12-19 04:34:22,944 INFO L78 Accepts]: Start accepts. Automaton has 36037 states and 41120 transitions. Word has length 432 [2023-12-19 04:34:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:22,944 INFO L495 AbstractCegarLoop]: Abstraction has 36037 states and 41120 transitions. [2023-12-19 04:34:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 36037 states and 41120 transitions. [2023-12-19 04:34:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-19 04:34:22,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:22,984 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:22,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:34:22,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:22,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash 255359819, now seen corresponding path program 1 times [2023-12-19 04:34:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321653080] [2023-12-19 04:34:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:34:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:23,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321653080] [2023-12-19 04:34:23,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321653080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:23,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:23,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:34:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622996359] [2023-12-19 04:34:23,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:23,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:34:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:34:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:34:23,623 INFO L87 Difference]: Start difference. First operand 36037 states and 41120 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:26,896 INFO L93 Difference]: Finished difference Result 106174 states and 120633 transitions. [2023-12-19 04:34:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:34:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 448 [2023-12-19 04:34:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:26,990 INFO L225 Difference]: With dead ends: 106174 [2023-12-19 04:34:26,990 INFO L226 Difference]: Without dead ends: 69713 [2023-12-19 04:34:27,004 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 [2023-12-19 04:34:27,005 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 803 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:27,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 167 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:34:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69713 states. [2023-12-19 04:34:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69713 to 60275. [2023-12-19 04:34:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60275 states, 60274 states have (on average 1.127816305538043) internal successors, (67978), 60274 states have internal predecessors, (67978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60275 states to 60275 states and 67978 transitions. [2023-12-19 04:34:27,987 INFO L78 Accepts]: Start accepts. Automaton has 60275 states and 67978 transitions. Word has length 448 [2023-12-19 04:34:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:27,988 INFO L495 AbstractCegarLoop]: Abstraction has 60275 states and 67978 transitions. [2023-12-19 04:34:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 60275 states and 67978 transitions. [2023-12-19 04:34:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 04:34:28,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:28,016 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:28,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:34:28,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:28,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1506163575, now seen corresponding path program 1 times [2023-12-19 04:34:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25643350] [2023-12-19 04:34:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-19 04:34:28,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25643350] [2023-12-19 04:34:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25643350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:28,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:28,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720483194] [2023-12-19 04:34:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:28,471 INFO L87 Difference]: Start difference. First operand 60275 states and 67978 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:30,307 INFO L93 Difference]: Finished difference Result 140979 states and 159029 transitions. [2023-12-19 04:34:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 467 [2023-12-19 04:34:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:30,412 INFO L225 Difference]: With dead ends: 140979 [2023-12-19 04:34:30,413 INFO L226 Difference]: Without dead ends: 79413 [2023-12-19 04:34:30,437 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 [2023-12-19 04:34:30,437 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 444 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:30,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 645 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:34:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79413 states. [2023-12-19 04:34:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79413 to 73020. [2023-12-19 04:34:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73020 states, 73019 states have (on average 1.1128747312343363) internal successors, (81261), 73019 states have internal predecessors, (81261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73020 states to 73020 states and 81261 transitions. [2023-12-19 04:34:31,501 INFO L78 Accepts]: Start accepts. Automaton has 73020 states and 81261 transitions. Word has length 467 [2023-12-19 04:34:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:31,501 INFO L495 AbstractCegarLoop]: Abstraction has 73020 states and 81261 transitions. [2023-12-19 04:34:31,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 73020 states and 81261 transitions. [2023-12-19 04:34:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-19 04:34:31,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:31,512 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:34:31,512 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:31,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 21077806, now seen corresponding path program 1 times [2023-12-19 04:34:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562804777] [2023-12-19 04:34:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-19 04:34:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562804777] [2023-12-19 04:34:32,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562804777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:32,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:32,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:34:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560409616] [2023-12-19 04:34:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:34:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:34:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:34:32,197 INFO L87 Difference]: Start difference. First operand 73020 states and 81261 transitions. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:35,269 INFO L93 Difference]: Finished difference Result 183986 states and 204032 transitions. [2023-12-19 04:34:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:34:35,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 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 471 [2023-12-19 04:34:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:35,481 INFO L225 Difference]: With dead ends: 183986 [2023-12-19 04:34:35,481 INFO L226 Difference]: Without dead ends: 110542 [2023-12-19 04:34:35,562 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 [2023-12-19 04:34:35,563 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 808 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:35,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 167 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:34:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110542 states. [2023-12-19 04:34:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110542 to 102016. [2023-12-19 04:34:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102016 states, 102015 states have (on average 1.108258589423124) internal successors, (113059), 102015 states have internal predecessors, (113059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102016 states to 102016 states and 113059 transitions. [2023-12-19 04:34:37,019 INFO L78 Accepts]: Start accepts. Automaton has 102016 states and 113059 transitions. Word has length 471 [2023-12-19 04:34:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:37,020 INFO L495 AbstractCegarLoop]: Abstraction has 102016 states and 113059 transitions. [2023-12-19 04:34:37,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 102016 states and 113059 transitions. [2023-12-19 04:34:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 04:34:37,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:37,033 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:34:37,033 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:37,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1132363243, now seen corresponding path program 1 times [2023-12-19 04:34:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:37,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137881019] [2023-12-19 04:34:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:37,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-19 04:34:37,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:37,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137881019] [2023-12-19 04:34:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137881019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:37,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:34:37,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242764373] [2023-12-19 04:34:37,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:37,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:34:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:34:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:34:37,674 INFO L87 Difference]: Start difference. First operand 102016 states and 113059 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:40,437 INFO L93 Difference]: Finished difference Result 230868 states and 255392 transitions. [2023-12-19 04:34:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:34:40,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 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 491 [2023-12-19 04:34:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:40,590 INFO L225 Difference]: With dead ends: 230868 [2023-12-19 04:34:40,591 INFO L226 Difference]: Without dead ends: 127576 [2023-12-19 04:34:40,751 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 [2023-12-19 04:34:40,760 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 803 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:40,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 197 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:34:40,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127576 states. [2023-12-19 04:34:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127576 to 100733. [2023-12-19 04:34:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100733 states, 100732 states have (on average 1.1058154310447523) internal successors, (111391), 100732 states have internal predecessors, (111391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100733 states to 100733 states and 111391 transitions. [2023-12-19 04:34:42,361 INFO L78 Accepts]: Start accepts. Automaton has 100733 states and 111391 transitions. Word has length 491 [2023-12-19 04:34:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:42,376 INFO L495 AbstractCegarLoop]: Abstraction has 100733 states and 111391 transitions. [2023-12-19 04:34:42,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 100733 states and 111391 transitions. [2023-12-19 04:34:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-19 04:34:42,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:42,403 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:34:42,403 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:42,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1168926500, now seen corresponding path program 1 times [2023-12-19 04:34:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:42,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376473618] [2023-12-19 04:34:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-19 04:34:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376473618] [2023-12-19 04:34:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376473618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:42,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:42,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:34:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479416945] [2023-12-19 04:34:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:34:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:34:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:34:42,989 INFO L87 Difference]: Start difference. First operand 100733 states and 111391 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:46,044 INFO L93 Difference]: Finished difference Result 236442 states and 262346 transitions. [2023-12-19 04:34:46,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:34:46,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 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 511 [2023-12-19 04:34:46,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:46,226 INFO L225 Difference]: With dead ends: 236442 [2023-12-19 04:34:46,226 INFO L226 Difference]: Without dead ends: 135710 [2023-12-19 04:34:46,244 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 [2023-12-19 04:34:46,245 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 824 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:46,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 206 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:34:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135710 states. [2023-12-19 04:34:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135710 to 126339. [2023-12-19 04:34:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126339 states, 126338 states have (on average 1.1141540945717046) internal successors, (140760), 126338 states have internal predecessors, (140760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126339 states to 126339 states and 140760 transitions. [2023-12-19 04:34:48,028 INFO L78 Accepts]: Start accepts. Automaton has 126339 states and 140760 transitions. Word has length 511 [2023-12-19 04:34:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:48,029 INFO L495 AbstractCegarLoop]: Abstraction has 126339 states and 140760 transitions. [2023-12-19 04:34:48,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 126339 states and 140760 transitions. [2023-12-19 04:34:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 04:34:48,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:48,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:48,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:34:48,045 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:48,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1762125450, now seen corresponding path program 1 times [2023-12-19 04:34:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:48,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069205623] [2023-12-19 04:34:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 04:34:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:48,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069205623] [2023-12-19 04:34:48,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069205623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:48,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:48,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:34:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518851062] [2023-12-19 04:34:48,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:48,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:34:48,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:34:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:34:48,554 INFO L87 Difference]: Start difference. First operand 126339 states and 140760 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:50,842 INFO L93 Difference]: Finished difference Result 281602 states and 314838 transitions. [2023-12-19 04:34:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:34:50,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 530 [2023-12-19 04:34:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:51,041 INFO L225 Difference]: With dead ends: 281602 [2023-12-19 04:34:51,041 INFO L226 Difference]: Without dead ends: 155264 [2023-12-19 04:34:51,066 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 [2023-12-19 04:34:51,068 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 389 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:51,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 307 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:34:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155264 states. [2023-12-19 04:34:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155264 to 153550. [2023-12-19 04:34:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153550 states, 153549 states have (on average 1.1080176360640577) internal successors, (170135), 153549 states have internal predecessors, (170135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153550 states to 153550 states and 170135 transitions. [2023-12-19 04:34:53,483 INFO L78 Accepts]: Start accepts. Automaton has 153550 states and 170135 transitions. Word has length 530 [2023-12-19 04:34:53,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:34:53,484 INFO L495 AbstractCegarLoop]: Abstraction has 153550 states and 170135 transitions. [2023-12-19 04:34:53,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 153550 states and 170135 transitions. [2023-12-19 04:34:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 04:34:53,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:34:53,505 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:34:53,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:34:53,506 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:34:53,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:34:53,506 INFO L85 PathProgramCache]: Analyzing trace with hash 276013354, now seen corresponding path program 1 times [2023-12-19 04:34:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:34:53,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238577694] [2023-12-19 04:34:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:34:53,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:34:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:34:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-19 04:34:54,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:34:54,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238577694] [2023-12-19 04:34:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238577694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:34:54,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:34:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:34:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609059928] [2023-12-19 04:34:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:34:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:34:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:34:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:34:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:34:54,215 INFO L87 Difference]: Start difference. First operand 153550 states and 170135 transitions. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:34:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:34:57,447 INFO L93 Difference]: Finished difference Result 333921 states and 369564 transitions. [2023-12-19 04:34:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:34:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 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 531 [2023-12-19 04:34:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:34:57,721 INFO L225 Difference]: With dead ends: 333921 [2023-12-19 04:34:57,721 INFO L226 Difference]: Without dead ends: 179947 [2023-12-19 04:34:57,794 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 [2023-12-19 04:34:57,794 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 760 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:34:57,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 235 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:34:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179947 states. [2023-12-19 04:34:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179947 to 145018. [2023-12-19 04:34:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145018 states, 145017 states have (on average 1.1061806546818649) internal successors, (160415), 145017 states have internal predecessors, (160415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145018 states to 145018 states and 160415 transitions. [2023-12-19 04:35:00,162 INFO L78 Accepts]: Start accepts. Automaton has 145018 states and 160415 transitions. Word has length 531 [2023-12-19 04:35:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:00,163 INFO L495 AbstractCegarLoop]: Abstraction has 145018 states and 160415 transitions. [2023-12-19 04:35:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 145018 states and 160415 transitions. [2023-12-19 04:35:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-19 04:35:00,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:00,178 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:00,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:35:00,179 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:00,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2047905419, now seen corresponding path program 1 times [2023-12-19 04:35:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:00,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248350078] [2023-12-19 04:35:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:00,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-12-19 04:35:00,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248350078] [2023-12-19 04:35:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248350078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:00,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:35:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599413990] [2023-12-19 04:35:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:35:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:35:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:00,572 INFO L87 Difference]: Start difference. First operand 145018 states and 160415 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:02,137 INFO L93 Difference]: Finished difference Result 285343 states and 315337 transitions. [2023-12-19 04:35:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:35:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 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 543 [2023-12-19 04:35:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:02,357 INFO L225 Difference]: With dead ends: 285343 [2023-12-19 04:35:02,358 INFO L226 Difference]: Without dead ends: 140326 [2023-12-19 04:35:02,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:02,417 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 622 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:02,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 102 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 04:35:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140326 states. [2023-12-19 04:35:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140326 to 136482. [2023-12-19 04:35:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136482 states, 136481 states have (on average 1.1051208593137507) internal successors, (150828), 136481 states have internal predecessors, (150828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136482 states to 136482 states and 150828 transitions. [2023-12-19 04:35:04,440 INFO L78 Accepts]: Start accepts. Automaton has 136482 states and 150828 transitions. Word has length 543 [2023-12-19 04:35:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:04,441 INFO L495 AbstractCegarLoop]: Abstraction has 136482 states and 150828 transitions. [2023-12-19 04:35:04,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 136482 states and 150828 transitions. [2023-12-19 04:35:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-19 04:35:04,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:04,455 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:35:04,456 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1193365961, now seen corresponding path program 1 times [2023-12-19 04:35:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:04,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813913274] [2023-12-19 04:35:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-19 04:35:04,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:04,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813913274] [2023-12-19 04:35:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813913274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:04,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:04,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:35:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523102063] [2023-12-19 04:35:04,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:04,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:35:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:35:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:35:04,987 INFO L87 Difference]: Start difference. First operand 136482 states and 150828 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:08,267 INFO L93 Difference]: Finished difference Result 291240 states and 320917 transitions. [2023-12-19 04:35:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:35:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 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 543 [2023-12-19 04:35:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:08,701 INFO L225 Difference]: With dead ends: 291240 [2023-12-19 04:35:08,701 INFO L226 Difference]: Without dead ends: 154758 [2023-12-19 04:35:08,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:35:08,833 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 764 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:08,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 384 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:35:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154758 states. [2023-12-19 04:35:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154758 to 140710. [2023-12-19 04:35:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140710 states, 140709 states have (on average 1.092154730685315) internal successors, (153676), 140709 states have internal predecessors, (153676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140710 states to 140710 states and 153676 transitions. [2023-12-19 04:35:11,189 INFO L78 Accepts]: Start accepts. Automaton has 140710 states and 153676 transitions. Word has length 543 [2023-12-19 04:35:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:11,190 INFO L495 AbstractCegarLoop]: Abstraction has 140710 states and 153676 transitions. [2023-12-19 04:35:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 140710 states and 153676 transitions. [2023-12-19 04:35:11,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-12-19 04:35:11,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:11,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:11,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:35:11,204 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:11,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash -996135833, now seen corresponding path program 1 times [2023-12-19 04:35:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448894161] [2023-12-19 04:35:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:11,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-19 04:35:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448894161] [2023-12-19 04:35:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448894161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:11,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:11,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:35:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54805569] [2023-12-19 04:35:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:35:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:35:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:11,472 INFO L87 Difference]: Start difference. First operand 140710 states and 153676 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:13,912 INFO L93 Difference]: Finished difference Result 314280 states and 343309 transitions. [2023-12-19 04:35:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:35:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 556 [2023-12-19 04:35:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:14,132 INFO L225 Difference]: With dead ends: 314280 [2023-12-19 04:35:14,133 INFO L226 Difference]: Without dead ends: 173571 [2023-12-19 04:35:14,208 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 [2023-12-19 04:35:14,208 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 311 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:14,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 276 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:35:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173571 states. [2023-12-19 04:35:16,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173571 to 168840. [2023-12-19 04:35:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168840 states, 168839 states have (on average 1.0880898370637115) internal successors, (183712), 168839 states have internal predecessors, (183712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168840 states to 168840 states and 183712 transitions. [2023-12-19 04:35:16,710 INFO L78 Accepts]: Start accepts. Automaton has 168840 states and 183712 transitions. Word has length 556 [2023-12-19 04:35:16,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:16,710 INFO L495 AbstractCegarLoop]: Abstraction has 168840 states and 183712 transitions. [2023-12-19 04:35:16,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 168840 states and 183712 transitions. [2023-12-19 04:35:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-12-19 04:35:16,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:16,724 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:35:16,725 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:16,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1199756296, now seen corresponding path program 1 times [2023-12-19 04:35:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797136834] [2023-12-19 04:35:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-19 04:35:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797136834] [2023-12-19 04:35:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797136834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:17,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:17,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:35:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284934813] [2023-12-19 04:35:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:17,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:35:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:35:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:35:17,316 INFO L87 Difference]: Start difference. First operand 168840 states and 183712 transitions. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:20,658 INFO L93 Difference]: Finished difference Result 361075 states and 392265 transitions. [2023-12-19 04:35:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:35:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 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 575 [2023-12-19 04:35:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:20,999 INFO L225 Difference]: With dead ends: 361075 [2023-12-19 04:35:20,999 INFO L226 Difference]: Without dead ends: 192661 [2023-12-19 04:35:21,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:35:21,127 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 752 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:21,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 346 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:35:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192661 states. [2023-12-19 04:35:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192661 to 173938. [2023-12-19 04:35:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173938 states, 173937 states have (on average 1.0853987363240714) internal successors, (188791), 173937 states have internal predecessors, (188791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173938 states to 173938 states and 188791 transitions. [2023-12-19 04:35:23,854 INFO L78 Accepts]: Start accepts. Automaton has 173938 states and 188791 transitions. Word has length 575 [2023-12-19 04:35:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:23,855 INFO L495 AbstractCegarLoop]: Abstraction has 173938 states and 188791 transitions. [2023-12-19 04:35:23,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 173938 states and 188791 transitions. [2023-12-19 04:35:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2023-12-19 04:35:23,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:23,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:23,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:35:23,872 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:23,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2064041919, now seen corresponding path program 1 times [2023-12-19 04:35:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:23,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450021622] [2023-12-19 04:35:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:23,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:35:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450021622] [2023-12-19 04:35:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450021622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:35:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466165490] [2023-12-19 04:35:24,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:24,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:35:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:35:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:35:24,371 INFO L87 Difference]: Start difference. First operand 173938 states and 188791 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:28,667 INFO L93 Difference]: Finished difference Result 414749 states and 449075 transitions. [2023-12-19 04:35:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:35:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 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 598 [2023-12-19 04:35:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:29,047 INFO L225 Difference]: With dead ends: 414749 [2023-12-19 04:35:29,048 INFO L226 Difference]: Without dead ends: 240387 [2023-12-19 04:35:29,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:35:29,205 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1255 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 4456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:29,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 293 Invalid, 4456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 3850 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:35:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240387 states. [2023-12-19 04:35:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240387 to 220808. [2023-12-19 04:35:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220808 states, 220807 states have (on average 1.0782312154958855) internal successors, (238081), 220807 states have internal predecessors, (238081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220808 states to 220808 states and 238081 transitions. [2023-12-19 04:35:32,745 INFO L78 Accepts]: Start accepts. Automaton has 220808 states and 238081 transitions. Word has length 598 [2023-12-19 04:35:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:32,745 INFO L495 AbstractCegarLoop]: Abstraction has 220808 states and 238081 transitions. [2023-12-19 04:35:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 220808 states and 238081 transitions. [2023-12-19 04:35:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2023-12-19 04:35:32,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:32,759 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:35:32,760 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:32,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1339850755, now seen corresponding path program 1 times [2023-12-19 04:35:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413725742] [2023-12-19 04:35:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:35:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413725742] [2023-12-19 04:35:33,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413725742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:33,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:33,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:35:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950238341] [2023-12-19 04:35:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:35:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:35:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:35:33,292 INFO L87 Difference]: Start difference. First operand 220808 states and 238081 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:38,418 INFO L93 Difference]: Finished difference Result 514023 states and 555015 transitions. [2023-12-19 04:35:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:35:38,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 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 598 [2023-12-19 04:35:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:38,859 INFO L225 Difference]: With dead ends: 514023 [2023-12-19 04:35:38,859 INFO L226 Difference]: Without dead ends: 292366 [2023-12-19 04:35:38,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:35:38,922 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1207 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 4049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:38,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 271 Invalid, 4049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 04:35:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292366 states. [2023-12-19 04:35:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292366 to 225039. [2023-12-19 04:35:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225039 states, 225038 states have (on average 1.077813524826918) internal successors, (242549), 225038 states have internal predecessors, (242549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225039 states to 225039 states and 242549 transitions. [2023-12-19 04:35:42,657 INFO L78 Accepts]: Start accepts. Automaton has 225039 states and 242549 transitions. Word has length 598 [2023-12-19 04:35:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:42,658 INFO L495 AbstractCegarLoop]: Abstraction has 225039 states and 242549 transitions. [2023-12-19 04:35:42,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 225039 states and 242549 transitions. [2023-12-19 04:35:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 04:35:42,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:42,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:35:42,676 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:42,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1550086593, now seen corresponding path program 1 times [2023-12-19 04:35:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:42,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519201291] [2023-12-19 04:35:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:35:43,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:43,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519201291] [2023-12-19 04:35:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519201291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:43,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:35:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39633558] [2023-12-19 04:35:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:35:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:35:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:35:43,366 INFO L87 Difference]: Start difference. First operand 225039 states and 242549 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:46,908 INFO L93 Difference]: Finished difference Result 462036 states and 497706 transitions. [2023-12-19 04:35:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:35:46,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 632 [2023-12-19 04:35:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:47,294 INFO L225 Difference]: With dead ends: 462036 [2023-12-19 04:35:47,295 INFO L226 Difference]: Without dead ends: 237423 [2023-12-19 04:35:47,420 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 [2023-12-19 04:35:47,420 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 750 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:47,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 247 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:35:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237423 states. [2023-12-19 04:35:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237423 to 223759. [2023-12-19 04:35:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223759 states, 223758 states have (on average 1.075067707076395) internal successors, (240555), 223758 states have internal predecessors, (240555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223759 states to 223759 states and 240555 transitions. [2023-12-19 04:35:50,978 INFO L78 Accepts]: Start accepts. Automaton has 223759 states and 240555 transitions. Word has length 632 [2023-12-19 04:35:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 223759 states and 240555 transitions. [2023-12-19 04:35:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 223759 states and 240555 transitions. [2023-12-19 04:35:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 04:35:50,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:51,000 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:51,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:35:51,000 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:51,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1331014466, now seen corresponding path program 1 times [2023-12-19 04:35:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:51,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081140111] [2023-12-19 04:35:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-12-19 04:35:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:51,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081140111] [2023-12-19 04:35:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081140111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:51,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:51,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:35:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034351799] [2023-12-19 04:35:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:51,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:35:51,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:35:51,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:35:51,576 INFO L87 Difference]: Start difference. First operand 223759 states and 240555 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:55,139 INFO L93 Difference]: Finished difference Result 464193 states and 498628 transitions. [2023-12-19 04:35:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:35:55,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 638 [2023-12-19 04:35:55,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:55,504 INFO L225 Difference]: With dead ends: 464193 [2023-12-19 04:35:55,504 INFO L226 Difference]: Without dead ends: 240860 [2023-12-19 04:35:55,611 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 [2023-12-19 04:35:55,612 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 765 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:55,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 254 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:35:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240860 states. [2023-12-19 04:35:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240860 to 222484. [2023-12-19 04:35:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222484 states, 222483 states have (on average 1.074675368455118) internal successors, (239097), 222483 states have internal predecessors, (239097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222484 states to 222484 states and 239097 transitions. [2023-12-19 04:35:59,053 INFO L78 Accepts]: Start accepts. Automaton has 222484 states and 239097 transitions. Word has length 638 [2023-12-19 04:35:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 222484 states and 239097 transitions. [2023-12-19 04:35:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 222484 states and 239097 transitions. [2023-12-19 04:35:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-19 04:35:59,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:59,083 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:59,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 04:35:59,083 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:59,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash -353332538, now seen corresponding path program 1 times [2023-12-19 04:35:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:59,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33541179] [2023-12-19 04:35:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2023-12-19 04:35:59,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:59,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33541179] [2023-12-19 04:35:59,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33541179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:59,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:35:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306168622] [2023-12-19 04:35:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:35:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:35:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:59,777 INFO L87 Difference]: Start difference. First operand 222484 states and 239097 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:02,296 INFO L93 Difference]: Finished difference Result 458193 states and 492510 transitions. [2023-12-19 04:36:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 755 [2023-12-19 04:36:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:02,659 INFO L225 Difference]: With dead ends: 458193 [2023-12-19 04:36:02,659 INFO L226 Difference]: Without dead ends: 236135 [2023-12-19 04:36:03,228 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 [2023-12-19 04:36:03,230 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 288 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:03,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 741 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:36:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236135 states. [2023-12-19 04:36:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236135 to 202435. [2023-12-19 04:36:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202435 states, 202434 states have (on average 1.0678690338579488) internal successors, (216173), 202434 states have internal predecessors, (216173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202435 states to 202435 states and 216173 transitions. [2023-12-19 04:36:06,707 INFO L78 Accepts]: Start accepts. Automaton has 202435 states and 216173 transitions. Word has length 755 [2023-12-19 04:36:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:06,708 INFO L495 AbstractCegarLoop]: Abstraction has 202435 states and 216173 transitions. [2023-12-19 04:36:06,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 202435 states and 216173 transitions. [2023-12-19 04:36:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2023-12-19 04:36:06,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:06,750 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:36:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:36:06,750 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:06,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -434076290, now seen corresponding path program 1 times [2023-12-19 04:36:06,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251338784] [2023-12-19 04:36:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-19 04:36:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251338784] [2023-12-19 04:36:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251338784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096883576] [2023-12-19 04:36:07,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:07,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:07,221 INFO L87 Difference]: Start difference. First operand 202435 states and 216173 transitions. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:09,889 INFO L93 Difference]: Finished difference Result 411250 states and 438862 transitions. [2023-12-19 04:36:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 814 [2023-12-19 04:36:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:10,260 INFO L225 Difference]: With dead ends: 411250 [2023-12-19 04:36:10,261 INFO L226 Difference]: Without dead ends: 208814 [2023-12-19 04:36:10,348 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 [2023-12-19 04:36:10,351 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 474 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:10,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 194 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:36:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208814 states. [2023-12-19 04:36:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208814 to 204976. [2023-12-19 04:36:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204976 states, 204975 states have (on average 1.0631979509696305) internal successors, (217929), 204975 states have internal predecessors, (217929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204976 states to 204976 states and 217929 transitions. [2023-12-19 04:36:13,220 INFO L78 Accepts]: Start accepts. Automaton has 204976 states and 217929 transitions. Word has length 814 [2023-12-19 04:36:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:13,220 INFO L495 AbstractCegarLoop]: Abstraction has 204976 states and 217929 transitions. [2023-12-19 04:36:13,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 204976 states and 217929 transitions. [2023-12-19 04:36:13,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2023-12-19 04:36:13,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:13,265 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:36:13,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 04:36:13,265 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:13,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1908818409, now seen corresponding path program 1 times [2023-12-19 04:36:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089462127] [2023-12-19 04:36:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:13,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1134 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-19 04:36:13,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089462127] [2023-12-19 04:36:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089462127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:13,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344302108] [2023-12-19 04:36:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:13,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:13,821 INFO L87 Difference]: Start difference. First operand 204976 states and 217929 transitions. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:16,569 INFO L93 Difference]: Finished difference Result 414631 states and 440708 transitions. [2023-12-19 04:36:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 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 858 [2023-12-19 04:36:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:16,975 INFO L225 Difference]: With dead ends: 414631 [2023-12-19 04:36:16,975 INFO L226 Difference]: Without dead ends: 208804 [2023-12-19 04:36:17,159 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 [2023-12-19 04:36:17,160 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 305 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 582 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:36:17,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208804 states. [2023-12-19 04:36:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208804 to 199006. [2023-12-19 04:36:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199006 states, 199005 states have (on average 1.063470767066154) internal successors, (211636), 199005 states have internal predecessors, (211636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199006 states to 199006 states and 211636 transitions. [2023-12-19 04:36:20,333 INFO L78 Accepts]: Start accepts. Automaton has 199006 states and 211636 transitions. Word has length 858 [2023-12-19 04:36:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:20,333 INFO L495 AbstractCegarLoop]: Abstraction has 199006 states and 211636 transitions. [2023-12-19 04:36:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 199006 states and 211636 transitions. [2023-12-19 04:36:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2023-12-19 04:36:20,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:20,400 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:36:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 04:36:20,401 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:20,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash -689596977, now seen corresponding path program 1 times [2023-12-19 04:36:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478563386] [2023-12-19 04:36:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 35 proven. 216 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2023-12-19 04:36:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478563386] [2023-12-19 04:36:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478563386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:36:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878415787] [2023-12-19 04:36:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:36:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:36:21,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:36:21,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:36:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:21,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:36:21,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:36:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2023-12-19 04:36:21,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:36:21,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878415787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:21,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:36:21,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:36:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803924287] [2023-12-19 04:36:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:21,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:36:21,832 INFO L87 Difference]: Start difference. First operand 199006 states and 211636 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:24,573 INFO L93 Difference]: Finished difference Result 393259 states and 417952 transitions. [2023-12-19 04:36:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:24,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 877 [2023-12-19 04:36:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:24,930 INFO L225 Difference]: With dead ends: 393259 [2023-12-19 04:36:24,930 INFO L226 Difference]: Without dead ends: 193404 [2023-12-19 04:36:25,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:36:25,091 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 462 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:25,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 601 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:36:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193404 states.