/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 23:16:59,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 23:16:59,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 23:16:59,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 23:16:59,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 23:16:59,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 23:16:59,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 23:16:59,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 23:16:59,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 23:16:59,542 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 23:16:59,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 23:16:59,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 23:16:59,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 23:16:59,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 23:16:59,544 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 23:16:59,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 23:16:59,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 23:16:59,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 23:16:59,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 23:16:59,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 23:16:59,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 23:16:59,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 23:16:59,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 23:16:59,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 23:16:59,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 23:16:59,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 23:16:59,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 23:16:59,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 23:16:59,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 23:16:59,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:16:59,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 23:16:59,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 23:16:59,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 23:16:59,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 23:16:59,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 23:16:59,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 23:16:59,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 23:16:59,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 23:16:59,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 23:16:59,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 23:16:59,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 23:16:59,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 23:16:59,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 23:16:59,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 23:16:59,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 23:16:59,789 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 23:16:59,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c [2023-12-25 23:17:00,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 23:17:01,159 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 23:17:01,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c [2023-12-25 23:17:01,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d976a6599/3e29ac52cdf14c50b568b4637f3d3b6b/FLAG71e51e34f [2023-12-25 23:17:01,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d976a6599/3e29ac52cdf14c50b568b4637f3d3b6b [2023-12-25 23:17:01,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 23:17:01,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 23:17:01,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 23:17:01,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 23:17:01,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 23:17:01,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:01,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c197a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01, skipping insertion in model container [2023-12-25 23:17:01,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:01,263 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 23:17:01,392 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c[1259,1272] [2023-12-25 23:17:01,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:17:01,663 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 23:17:01,672 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c[1259,1272] [2023-12-25 23:17:01,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:17:01,832 INFO L206 MainTranslator]: Completed translation [2023-12-25 23:17:01,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01 WrapperNode [2023-12-25 23:17:01,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 23:17:01,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 23:17:01,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 23:17:01,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 23:17:01,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:01,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,128 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2421 [2023-12-25 23:17:02,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 23:17:02,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 23:17:02,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 23:17:02,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 23:17:02,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,221 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,318 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]. [2023-12-25 23:17:02,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 23:17:02,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 23:17:02,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 23:17:02,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 23:17:02,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (1/1) ... [2023-12-25 23:17:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:17:02,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:17:02,520 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) [2023-12-25 23:17:02,537 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 [2023-12-25 23:17:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 23:17:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 23:17:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 23:17:02,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 23:17:02,818 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 23:17:02,821 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 23:17:04,428 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 23:17:04,485 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 23:17:04,486 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 23:17:04,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:17:04 BoogieIcfgContainer [2023-12-25 23:17:04,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 23:17:04,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 23:17:04,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 23:17:04,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 23:17:04,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 11:17:01" (1/3) ... [2023-12-25 23:17:04,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fc95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:17:04, skipping insertion in model container [2023-12-25 23:17:04,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:17:01" (2/3) ... [2023-12-25 23:17:04,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fc95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:17:04, skipping insertion in model container [2023-12-25 23:17:04,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:17:04" (3/3) ... [2023-12-25 23:17:04,495 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p06.c [2023-12-25 23:17:04,509 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 23:17:04,510 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 23:17:04,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 23:17:04,578 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;@77f93c5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 23:17:04,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 23:17:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 408 states, 406 states have (on average 1.667487684729064) internal successors, (677), 407 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 23:17:04,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:04,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:04,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:04,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1266009245, now seen corresponding path program 1 times [2023-12-25 23:17:04,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425506553] [2023-12-25 23:17:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:04,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:05,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:05,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425506553] [2023-12-25 23:17:05,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425506553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:05,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:17:05,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841121421] [2023-12-25 23:17:05,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:05,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:17:05,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:05,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:17:05,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:17:05,441 INFO L87 Difference]: Start difference. First operand has 408 states, 406 states have (on average 1.667487684729064) internal successors, (677), 407 states have internal predecessors, (677), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:05,680 INFO L93 Difference]: Finished difference Result 1520 states and 2527 transitions. [2023-12-25 23:17:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:17:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-25 23:17:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:05,702 INFO L225 Difference]: With dead ends: 1520 [2023-12-25 23:17:05,702 INFO L226 Difference]: Without dead ends: 1152 [2023-12-25 23:17:05,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:17:05,711 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1810 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:05,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 3349 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-12-25 23:17:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 417. [2023-12-25 23:17:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.65625) internal successors, (689), 416 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 689 transitions. [2023-12-25 23:17:05,779 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 689 transitions. Word has length 46 [2023-12-25 23:17:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 689 transitions. [2023-12-25 23:17:05,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 689 transitions. [2023-12-25 23:17:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 23:17:05,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:05,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:05,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 23:17:05,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:05,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -32882209, now seen corresponding path program 1 times [2023-12-25 23:17:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:05,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497673484] [2023-12-25 23:17:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:05,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497673484] [2023-12-25 23:17:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497673484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:06,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:06,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706042761] [2023-12-25 23:17:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:06,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:06,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:06,134 INFO L87 Difference]: Start difference. First operand 417 states and 689 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:06,282 INFO L93 Difference]: Finished difference Result 1179 states and 1947 transitions. [2023-12-25 23:17:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:17:06,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-25 23:17:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:06,287 INFO L225 Difference]: With dead ends: 1179 [2023-12-25 23:17:06,287 INFO L226 Difference]: Without dead ends: 802 [2023-12-25 23:17:06,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:17:06,290 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 2470 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:06,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 1994 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-12-25 23:17:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 427. [2023-12-25 23:17:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.6502347417840375) internal successors, (703), 426 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 703 transitions. [2023-12-25 23:17:06,319 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 703 transitions. Word has length 47 [2023-12-25 23:17:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:06,319 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 703 transitions. [2023-12-25 23:17:06,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 703 transitions. [2023-12-25 23:17:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-25 23:17:06,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:06,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:06,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 23:17:06,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:06,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash -207466837, now seen corresponding path program 1 times [2023-12-25 23:17:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:06,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785241273] [2023-12-25 23:17:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:06,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785241273] [2023-12-25 23:17:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785241273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:06,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976661874] [2023-12-25 23:17:06,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:17:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:17:06,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:17:06,602 INFO L87 Difference]: Start difference. First operand 427 states and 703 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:06,635 INFO L93 Difference]: Finished difference Result 431 states and 707 transitions. [2023-12-25 23:17:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:17:06,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-25 23:17:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:06,637 INFO L225 Difference]: With dead ends: 431 [2023-12-25 23:17:06,638 INFO L226 Difference]: Without dead ends: 429 [2023-12-25 23:17:06,640 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 [2023-12-25 23:17:06,642 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:06,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2005 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:17:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-25 23:17:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2023-12-25 23:17:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.647196261682243) internal successors, (705), 428 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 705 transitions. [2023-12-25 23:17:06,655 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 705 transitions. Word has length 48 [2023-12-25 23:17:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:06,656 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 705 transitions. [2023-12-25 23:17:06,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 705 transitions. [2023-12-25 23:17:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 23:17:06,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:06,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 23:17:06,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:06,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2134779451, now seen corresponding path program 1 times [2023-12-25 23:17:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693589208] [2023-12-25 23:17:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:06,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:06,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693589208] [2023-12-25 23:17:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693589208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:06,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:06,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061354900] [2023-12-25 23:17:06,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:06,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:17:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:06,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:17:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:17:06,865 INFO L87 Difference]: Start difference. First operand 429 states and 705 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:06,897 INFO L93 Difference]: Finished difference Result 811 states and 1334 transitions. [2023-12-25 23:17:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:17:06,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-25 23:17:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:06,900 INFO L225 Difference]: With dead ends: 811 [2023-12-25 23:17:06,900 INFO L226 Difference]: Without dead ends: 432 [2023-12-25 23:17:06,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:17:06,906 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:06,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2003 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:17:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-25 23:17:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 431. [2023-12-25 23:17:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6441860465116278) internal successors, (707), 430 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 707 transitions. [2023-12-25 23:17:06,917 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 707 transitions. Word has length 49 [2023-12-25 23:17:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:06,918 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 707 transitions. [2023-12-25 23:17:06,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 707 transitions. [2023-12-25 23:17:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 23:17:06,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:06,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 23:17:06,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:06,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1964085755, now seen corresponding path program 1 times [2023-12-25 23:17:06,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022342764] [2023-12-25 23:17:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022342764] [2023-12-25 23:17:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022342764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:07,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:17:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686201784] [2023-12-25 23:17:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:17:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:17:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:07,201 INFO L87 Difference]: Start difference. First operand 431 states and 707 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:07,436 INFO L93 Difference]: Finished difference Result 1575 states and 2591 transitions. [2023-12-25 23:17:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 23:17:07,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-25 23:17:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:07,442 INFO L225 Difference]: With dead ends: 1575 [2023-12-25 23:17:07,442 INFO L226 Difference]: Without dead ends: 1194 [2023-12-25 23:17:07,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:17:07,443 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 3027 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 4691 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:07,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3027 Valid, 4691 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-12-25 23:17:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 437. [2023-12-25 23:17:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.6422018348623852) internal successors, (716), 436 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 716 transitions. [2023-12-25 23:17:07,456 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 716 transitions. Word has length 50 [2023-12-25 23:17:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:07,456 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 716 transitions. [2023-12-25 23:17:07,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 716 transitions. [2023-12-25 23:17:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 23:17:07,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:07,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 23:17:07,458 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:07,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash 391981841, now seen corresponding path program 1 times [2023-12-25 23:17:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126040056] [2023-12-25 23:17:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:07,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126040056] [2023-12-25 23:17:07,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126040056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:07,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:07,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:07,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859073328] [2023-12-25 23:17:07,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:07,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:07,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:07,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:07,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:07,776 INFO L87 Difference]: Start difference. First operand 437 states and 716 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:07,855 INFO L93 Difference]: Finished difference Result 1207 states and 1977 transitions. [2023-12-25 23:17:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:17:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-25 23:17:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:07,859 INFO L225 Difference]: With dead ends: 1207 [2023-12-25 23:17:07,859 INFO L226 Difference]: Without dead ends: 817 [2023-12-25 23:17:07,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:07,860 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1846 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:07,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 2002 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:17:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-25 23:17:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 441. [2023-12-25 23:17:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.6363636363636365) internal successors, (720), 440 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 720 transitions. [2023-12-25 23:17:07,875 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 720 transitions. Word has length 50 [2023-12-25 23:17:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:07,876 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 720 transitions. [2023-12-25 23:17:07,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 720 transitions. [2023-12-25 23:17:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 23:17:07,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:07,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 23:17:07,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:07,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -225138875, now seen corresponding path program 1 times [2023-12-25 23:17:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:07,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081681699] [2023-12-25 23:17:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081681699] [2023-12-25 23:17:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081681699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:08,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:08,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:17:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278134252] [2023-12-25 23:17:08,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:08,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:17:08,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:17:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:08,254 INFO L87 Difference]: Start difference. First operand 441 states and 720 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:08,472 INFO L93 Difference]: Finished difference Result 1609 states and 2633 transitions. [2023-12-25 23:17:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:17:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-25 23:17:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:08,478 INFO L225 Difference]: With dead ends: 1609 [2023-12-25 23:17:08,478 INFO L226 Difference]: Without dead ends: 1220 [2023-12-25 23:17:08,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:17:08,479 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 4854 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4854 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:08,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4854 Valid, 3346 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-12-25 23:17:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 453. [2023-12-25 23:17:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.6283185840707965) internal successors, (736), 452 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:08,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 736 transitions. [2023-12-25 23:17:08,494 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 736 transitions. Word has length 51 [2023-12-25 23:17:08,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:08,495 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 736 transitions. [2023-12-25 23:17:08,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 736 transitions. [2023-12-25 23:17:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 23:17:08,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:08,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:08,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 23:17:08,496 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:08,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2109383985, now seen corresponding path program 1 times [2023-12-25 23:17:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006921993] [2023-12-25 23:17:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:08,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:08,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:08,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006921993] [2023-12-25 23:17:08,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006921993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:08,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:08,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:17:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232495453] [2023-12-25 23:17:08,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:08,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:17:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:17:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:08,736 INFO L87 Difference]: Start difference. First operand 453 states and 736 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:08,935 INFO L93 Difference]: Finished difference Result 1622 states and 2652 transitions. [2023-12-25 23:17:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:17:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-25 23:17:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:08,940 INFO L225 Difference]: With dead ends: 1622 [2023-12-25 23:17:08,940 INFO L226 Difference]: Without dead ends: 1233 [2023-12-25 23:17:08,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:17:08,942 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 2431 mSDsluCounter, 3901 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:08,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 5181 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-12-25 23:17:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 459. [2023-12-25 23:17:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.6222707423580787) internal successors, (743), 458 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 743 transitions. [2023-12-25 23:17:08,956 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 743 transitions. Word has length 51 [2023-12-25 23:17:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:08,956 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 743 transitions. [2023-12-25 23:17:08,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 743 transitions. [2023-12-25 23:17:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 23:17:08,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:08,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 23:17:08,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -334376623, now seen corresponding path program 1 times [2023-12-25 23:17:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10678989] [2023-12-25 23:17:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10678989] [2023-12-25 23:17:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10678989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:17:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094730530] [2023-12-25 23:17:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:17:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:09,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:17:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:09,251 INFO L87 Difference]: Start difference. First operand 459 states and 743 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:09,439 INFO L93 Difference]: Finished difference Result 1235 states and 2014 transitions. [2023-12-25 23:17:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:17:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-25 23:17:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:09,443 INFO L225 Difference]: With dead ends: 1235 [2023-12-25 23:17:09,443 INFO L226 Difference]: Without dead ends: 840 [2023-12-25 23:17:09,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:17:09,445 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 2972 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:09,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2972 Valid, 2873 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-25 23:17:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 456. [2023-12-25 23:17:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.6241758241758242) internal successors, (739), 455 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 739 transitions. [2023-12-25 23:17:09,459 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 739 transitions. Word has length 51 [2023-12-25 23:17:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:09,459 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 739 transitions. [2023-12-25 23:17:09,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:09,459 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 739 transitions. [2023-12-25 23:17:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:17:09,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:09,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:09,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 23:17:09,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:09,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:09,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2103517589, now seen corresponding path program 1 times [2023-12-25 23:17:09,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:09,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421138422] [2023-12-25 23:17:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:10,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:10,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421138422] [2023-12-25 23:17:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421138422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:10,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 23:17:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923089463] [2023-12-25 23:17:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:10,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 23:17:10,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:10,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 23:17:10,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:17:10,138 INFO L87 Difference]: Start difference. First operand 456 states and 739 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:11,900 INFO L93 Difference]: Finished difference Result 2383 states and 3889 transitions. [2023-12-25 23:17:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-25 23:17:11,901 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-25 23:17:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:11,907 INFO L225 Difference]: With dead ends: 2383 [2023-12-25 23:17:11,907 INFO L226 Difference]: Without dead ends: 1991 [2023-12-25 23:17:11,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 23:17:11,910 INFO L413 NwaCegarLoop]: 1843 mSDtfsCounter, 5538 mSDsluCounter, 13074 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5538 SdHoareTripleChecker+Valid, 14917 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:11,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5538 Valid, 14917 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 23:17:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2023-12-25 23:17:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 465. [2023-12-25 23:17:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.6228448275862069) internal successors, (753), 464 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 753 transitions. [2023-12-25 23:17:11,928 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 753 transitions. Word has length 52 [2023-12-25 23:17:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:11,928 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 753 transitions. [2023-12-25 23:17:11,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 753 transitions. [2023-12-25 23:17:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:17:11,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:11,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:11,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 23:17:11,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:11,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash -328510227, now seen corresponding path program 1 times [2023-12-25 23:17:11,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:11,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578481621] [2023-12-25 23:17:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578481621] [2023-12-25 23:17:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578481621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596179801] [2023-12-25 23:17:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:12,260 INFO L87 Difference]: Start difference. First operand 465 states and 753 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:12,397 INFO L93 Difference]: Finished difference Result 1261 states and 2047 transitions. [2023-12-25 23:17:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:17:12,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-25 23:17:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:12,401 INFO L225 Difference]: With dead ends: 1261 [2023-12-25 23:17:12,402 INFO L226 Difference]: Without dead ends: 850 [2023-12-25 23:17:12,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:12,403 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 2458 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:12,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2458 Valid, 1982 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-12-25 23:17:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 465. [2023-12-25 23:17:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.6185344827586208) internal successors, (751), 464 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 751 transitions. [2023-12-25 23:17:12,415 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 751 transitions. Word has length 52 [2023-12-25 23:17:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:12,415 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 751 transitions. [2023-12-25 23:17:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 751 transitions. [2023-12-25 23:17:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:17:12,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:12,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:12,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 23:17:12,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:12,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:12,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2017453969, now seen corresponding path program 1 times [2023-12-25 23:17:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:12,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977698072] [2023-12-25 23:17:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:12,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:12,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977698072] [2023-12-25 23:17:12,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977698072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:12,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:12,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:12,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658635680] [2023-12-25 23:17:12,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:12,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:12,709 INFO L87 Difference]: Start difference. First operand 465 states and 751 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:12,871 INFO L93 Difference]: Finished difference Result 1242 states and 2019 transitions. [2023-12-25 23:17:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:17:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-25 23:17:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:12,875 INFO L225 Difference]: With dead ends: 1242 [2023-12-25 23:17:12,875 INFO L226 Difference]: Without dead ends: 839 [2023-12-25 23:17:12,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:12,877 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 2439 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:12,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2439 Valid, 1985 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-25 23:17:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 463. [2023-12-25 23:17:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.6168831168831168) internal successors, (747), 462 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 747 transitions. [2023-12-25 23:17:12,890 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 747 transitions. Word has length 52 [2023-12-25 23:17:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:12,890 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 747 transitions. [2023-12-25 23:17:12,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 747 transitions. [2023-12-25 23:17:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:17:12,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:12,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:12,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 23:17:12,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:12,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash -954834973, now seen corresponding path program 1 times [2023-12-25 23:17:12,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:12,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978303144] [2023-12-25 23:17:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:13,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978303144] [2023-12-25 23:17:13,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978303144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:13,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:13,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882553298] [2023-12-25 23:17:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:13,097 INFO L87 Difference]: Start difference. First operand 463 states and 747 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:13,212 INFO L93 Difference]: Finished difference Result 1218 states and 1981 transitions. [2023-12-25 23:17:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:17:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-25 23:17:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:13,215 INFO L225 Difference]: With dead ends: 1218 [2023-12-25 23:17:13,215 INFO L226 Difference]: Without dead ends: 799 [2023-12-25 23:17:13,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:17:13,217 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1813 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:13,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1972 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-25 23:17:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 452. [2023-12-25 23:17:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.623059866962306) internal successors, (732), 451 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 732 transitions. [2023-12-25 23:17:13,229 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 732 transitions. Word has length 52 [2023-12-25 23:17:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:13,229 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 732 transitions. [2023-12-25 23:17:13,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 732 transitions. [2023-12-25 23:17:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-25 23:17:13,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:13,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:13,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 23:17:13,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:13,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -592133310, now seen corresponding path program 1 times [2023-12-25 23:17:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321732709] [2023-12-25 23:17:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321732709] [2023-12-25 23:17:18,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321732709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:18,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:18,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:17:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034962954] [2023-12-25 23:17:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:17:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:17:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:17:18,529 INFO L87 Difference]: Start difference. First operand 452 states and 732 transitions. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:18,895 INFO L93 Difference]: Finished difference Result 2642 states and 4330 transitions. [2023-12-25 23:17:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 23:17:18,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 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 [2023-12-25 23:17:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:18,903 INFO L225 Difference]: With dead ends: 2642 [2023-12-25 23:17:18,903 INFO L226 Difference]: Without dead ends: 2241 [2023-12-25 23:17:18,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:17:18,905 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 6099 mSDsluCounter, 6341 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6099 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:18,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6099 Valid, 7605 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2023-12-25 23:17:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 791. [2023-12-25 23:17:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.6354430379746836) internal successors, (1292), 790 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1292 transitions. [2023-12-25 23:17:18,937 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1292 transitions. Word has length 295 [2023-12-25 23:17:18,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:18,938 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1292 transitions. [2023-12-25 23:17:18,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1292 transitions. [2023-12-25 23:17:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-25 23:17:18,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:18,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:18,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 23:17:18,942 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:18,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1179564176, now seen corresponding path program 1 times [2023-12-25 23:17:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:18,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571280134] [2023-12-25 23:17:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:18,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571280134] [2023-12-25 23:17:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571280134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:22,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:22,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:17:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220222939] [2023-12-25 23:17:22,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:22,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:17:22,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:22,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:17:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:17:22,094 INFO L87 Difference]: Start difference. First operand 791 states and 1292 transitions. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:22,259 INFO L93 Difference]: Finished difference Result 2247 states and 3680 transitions. [2023-12-25 23:17:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:17:22,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 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 [2023-12-25 23:17:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:22,265 INFO L225 Difference]: With dead ends: 2247 [2023-12-25 23:17:22,265 INFO L226 Difference]: Without dead ends: 1505 [2023-12-25 23:17:22,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:17:22,268 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 2664 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 5077 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:22,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 5077 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-25 23:17:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 791. [2023-12-25 23:17:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.6329113924050633) internal successors, (1290), 790 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1290 transitions. [2023-12-25 23:17:22,292 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1290 transitions. Word has length 296 [2023-12-25 23:17:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:22,293 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1290 transitions. [2023-12-25 23:17:22,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1290 transitions. [2023-12-25 23:17:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-25 23:17:22,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:22,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:22,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 23:17:22,297 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:22,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:22,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1241964016, now seen corresponding path program 1 times [2023-12-25 23:17:22,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:22,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174233888] [2023-12-25 23:17:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:22,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174233888] [2023-12-25 23:17:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174233888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:26,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:26,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:17:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704429172] [2023-12-25 23:17:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:26,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:17:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:26,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:17:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:17:26,420 INFO L87 Difference]: Start difference. First operand 791 states and 1290 transitions. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:27,144 INFO L93 Difference]: Finished difference Result 1881 states and 3077 transitions. [2023-12-25 23:17:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:17:27,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 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 [2023-12-25 23:17:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:27,148 INFO L225 Difference]: With dead ends: 1881 [2023-12-25 23:17:27,149 INFO L226 Difference]: Without dead ends: 1139 [2023-12-25 23:17:27,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:17:27,150 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2330 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:27,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 2042 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 23:17:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-25 23:17:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 822. [2023-12-25 23:17:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.6236297198538368) internal successors, (1333), 821 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1333 transitions. [2023-12-25 23:17:27,171 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1333 transitions. Word has length 296 [2023-12-25 23:17:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:27,172 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1333 transitions. [2023-12-25 23:17:27,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1333 transitions. [2023-12-25 23:17:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-25 23:17:27,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:27,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:27,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 23:17:27,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:27,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1856010334, now seen corresponding path program 1 times [2023-12-25 23:17:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:27,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819369128] [2023-12-25 23:17:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819369128] [2023-12-25 23:17:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819369128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:33,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379032785] [2023-12-25 23:17:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:33,716 INFO L87 Difference]: Start difference. First operand 822 states and 1333 transitions. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 4 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) [2023-12-25 23:17:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:34,021 INFO L93 Difference]: Finished difference Result 1899 states and 3104 transitions. [2023-12-25 23:17:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:17:34,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 4 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 297 [2023-12-25 23:17:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:34,026 INFO L225 Difference]: With dead ends: 1899 [2023-12-25 23:17:34,026 INFO L226 Difference]: Without dead ends: 1140 [2023-12-25 23:17:34,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:17:34,028 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1789 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:34,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 1864 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:17:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2023-12-25 23:17:34,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 822. [2023-12-25 23:17:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.6224116930572472) internal successors, (1332), 821 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1332 transitions. [2023-12-25 23:17:34,053 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1332 transitions. Word has length 297 [2023-12-25 23:17:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:34,053 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1332 transitions. [2023-12-25 23:17:34,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 4 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) [2023-12-25 23:17:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1332 transitions. [2023-12-25 23:17:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-25 23:17:34,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:34,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:34,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 23:17:34,058 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:34,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -192327000, now seen corresponding path program 1 times [2023-12-25 23:17:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647412194] [2023-12-25 23:17:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:34,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647412194] [2023-12-25 23:17:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647412194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:17:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543151679] [2023-12-25 23:17:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:38,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:17:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:17:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:17:38,650 INFO L87 Difference]: Start difference. First operand 822 states and 1332 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:38,924 INFO L93 Difference]: Finished difference Result 1899 states and 3103 transitions. [2023-12-25 23:17:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:17:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2023-12-25 23:17:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:38,928 INFO L225 Difference]: With dead ends: 1899 [2023-12-25 23:17:38,928 INFO L226 Difference]: Without dead ends: 1140 [2023-12-25 23:17:38,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:17:38,930 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1784 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:38,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 1864 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:17:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2023-12-25 23:17:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 822. [2023-12-25 23:17:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.6211936662606576) internal successors, (1331), 821 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1331 transitions. [2023-12-25 23:17:38,951 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1331 transitions. Word has length 298 [2023-12-25 23:17:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:38,951 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1331 transitions. [2023-12-25 23:17:38,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1331 transitions. [2023-12-25 23:17:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-25 23:17:38,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:38,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 23:17:38,955 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:38,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -419547990, now seen corresponding path program 1 times [2023-12-25 23:17:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655518205] [2023-12-25 23:17:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655518205] [2023-12-25 23:17:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655518205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:17:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348746669] [2023-12-25 23:17:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:17:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:17:43,034 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) [2023-12-25 23:17:43,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 23:17:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:43,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-25 23:17:43,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:17:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:44,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:17:44,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348746669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:44,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:17:44,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2023-12-25 23:17:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673621076] [2023-12-25 23:17:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:44,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:17:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:17:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:17:44,205 INFO L87 Difference]: Start difference. First operand 822 states and 1331 transitions. Second operand has 9 states, 9 states have (on average 33.111111111111114) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:45,607 INFO L93 Difference]: Finished difference Result 5255 states and 8581 transitions. [2023-12-25 23:17:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 23:17:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.111111111111114) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2023-12-25 23:17:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:45,628 INFO L225 Difference]: With dead ends: 5255 [2023-12-25 23:17:45,629 INFO L226 Difference]: Without dead ends: 4513 [2023-12-25 23:17:45,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2023-12-25 23:17:45,632 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 5701 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5701 SdHoareTripleChecker+Valid, 4272 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:45,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5701 Valid, 4272 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 23:17:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2023-12-25 23:17:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 832. [2023-12-25 23:17:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.6161251504211793) internal successors, (1343), 831 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1343 transitions. [2023-12-25 23:17:45,680 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1343 transitions. Word has length 298 [2023-12-25 23:17:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:45,680 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1343 transitions. [2023-12-25 23:17:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.111111111111114) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1343 transitions. [2023-12-25 23:17:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-25 23:17:45,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:45,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:45,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 23:17:45,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:17:45,896 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:45,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash 69245769, now seen corresponding path program 1 times [2023-12-25 23:17:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:45,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382773230] [2023-12-25 23:17:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382773230] [2023-12-25 23:17:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382773230] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:17:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939946650] [2023-12-25 23:17:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:49,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:17:49,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:17:49,958 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) [2023-12-25 23:17:49,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 23:17:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:50,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-25 23:17:50,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:17:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:51,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:17:51,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939946650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:51,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:17:51,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 18 [2023-12-25 23:17:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652192593] [2023-12-25 23:17:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 23:17:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 23:17:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:17:51,213 INFO L87 Difference]: Start difference. First operand 832 states and 1343 transitions. Second operand has 12 states, 12 states have (on average 24.916666666666668) internal successors, (299), 11 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:52,581 INFO L93 Difference]: Finished difference Result 3148 states and 5103 transitions. [2023-12-25 23:17:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 23:17:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.916666666666668) internal successors, (299), 11 states have internal predecessors, (299), 0 states have call successors, (0), 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 299 [2023-12-25 23:17:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:52,597 INFO L225 Difference]: With dead ends: 3148 [2023-12-25 23:17:52,597 INFO L226 Difference]: Without dead ends: 2385 [2023-12-25 23:17:52,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 23:17:52,599 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 4285 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:52,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4285 Valid, 4896 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 23:17:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-12-25 23:17:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 890. [2023-12-25 23:17:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.6029246344206973) internal successors, (1425), 889 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1425 transitions. [2023-12-25 23:17:52,632 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1425 transitions. Word has length 299 [2023-12-25 23:17:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:52,633 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1425 transitions. [2023-12-25 23:17:52,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.916666666666668) internal successors, (299), 11 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1425 transitions. [2023-12-25 23:17:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-25 23:17:52,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:52,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:52,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 23:17:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-12-25 23:17:52,849 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:52,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -612627857, now seen corresponding path program 1 times [2023-12-25 23:17:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:52,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021964787] [2023-12-25 23:17:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:54,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021964787] [2023-12-25 23:17:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021964787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:54,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:17:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635496602] [2023-12-25 23:17:54,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:54,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:17:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:17:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:17:54,286 INFO L87 Difference]: Start difference. First operand 890 states and 1425 transitions. Second operand has 6 states, 6 states have (on average 50.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:54,458 INFO L93 Difference]: Finished difference Result 2509 states and 4040 transitions. [2023-12-25 23:17:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:17:54,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2023-12-25 23:17:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:54,462 INFO L225 Difference]: With dead ends: 2509 [2023-12-25 23:17:54,462 INFO L226 Difference]: Without dead ends: 1688 [2023-12-25 23:17:54,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:17:54,463 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 2523 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:54,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 2677 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:17:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-12-25 23:17:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 887. [2023-12-25 23:17:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.600451467268623) internal successors, (1418), 886 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1418 transitions. [2023-12-25 23:17:54,485 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1418 transitions. Word has length 300 [2023-12-25 23:17:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:54,486 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1418 transitions. [2023-12-25 23:17:54,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1418 transitions. [2023-12-25 23:17:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-25 23:17:54,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:54,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:54,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 23:17:54,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:54,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1340399221, now seen corresponding path program 1 times [2023-12-25 23:17:54,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:54,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362903451] [2023-12-25 23:17:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:54,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:17:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:17:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:17:56,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:17:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362903451] [2023-12-25 23:17:56,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362903451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:17:56,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:17:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:17:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261660487] [2023-12-25 23:17:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:17:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:17:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:17:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:17:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:17:56,974 INFO L87 Difference]: Start difference. First operand 887 states and 1418 transitions. Second operand has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 8 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:17:57,791 INFO L93 Difference]: Finished difference Result 2512 states and 4038 transitions. [2023-12-25 23:17:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:17:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 8 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2023-12-25 23:17:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:17:57,796 INFO L225 Difference]: With dead ends: 2512 [2023-12-25 23:17:57,796 INFO L226 Difference]: Without dead ends: 1688 [2023-12-25 23:17:57,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:17:57,798 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1929 mSDsluCounter, 3348 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:17:57,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 3900 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 23:17:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-12-25 23:17:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 887. [2023-12-25 23:17:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.5981941309255079) internal successors, (1416), 886 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1416 transitions. [2023-12-25 23:17:57,820 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1416 transitions. Word has length 300 [2023-12-25 23:17:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:17:57,820 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1416 transitions. [2023-12-25 23:17:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 8 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1416 transitions. [2023-12-25 23:17:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-25 23:17:57,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:17:57,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:17:57,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 23:17:57,822 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:17:57,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:17:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash -776424157, now seen corresponding path program 1 times [2023-12-25 23:17:57,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:17:57,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487799089] [2023-12-25 23:17:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:17:57,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:18:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:01,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:18:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487799089] [2023-12-25 23:18:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487799089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:18:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559048728] [2023-12-25 23:18:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:18:01,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:18:01,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:18:01,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:18:01,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 23:18:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:02,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 23:18:02,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:18:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:03,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:18:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559048728] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:18:03,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:18:03,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 19 [2023-12-25 23:18:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052078015] [2023-12-25 23:18:03,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:18:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 23:18:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:18:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 23:18:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-25 23:18:03,529 INFO L87 Difference]: Start difference. First operand 887 states and 1416 transitions. Second operand has 20 states, 20 states have (on average 33.6) internal successors, (672), 19 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:18:04,302 INFO L93 Difference]: Finished difference Result 6692 states and 10877 transitions. [2023-12-25 23:18:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 23:18:04,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 33.6) internal successors, (672), 19 states have internal predecessors, (672), 0 states have call successors, (0), 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 301 [2023-12-25 23:18:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:18:04,312 INFO L225 Difference]: With dead ends: 6692 [2023-12-25 23:18:04,312 INFO L226 Difference]: Without dead ends: 5885 [2023-12-25 23:18:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=1305, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 23:18:04,315 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 13496 mSDsluCounter, 6582 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13496 SdHoareTripleChecker+Valid, 7284 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:18:04,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13496 Valid, 7284 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:18:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2023-12-25 23:18:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 1559. [2023-12-25 23:18:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.6116816431322207) internal successors, (2511), 1558 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2511 transitions. [2023-12-25 23:18:04,372 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2511 transitions. Word has length 301 [2023-12-25 23:18:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:18:04,372 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2511 transitions. [2023-12-25 23:18:04,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 33.6) internal successors, (672), 19 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2511 transitions. [2023-12-25 23:18:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-25 23:18:04,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:18:04,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:18:04,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 23:18:04,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:18:04,587 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:18:04,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:18:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1402748903, now seen corresponding path program 1 times [2023-12-25 23:18:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:18:04,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363204197] [2023-12-25 23:18:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:18:04,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:18:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:18:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363204197] [2023-12-25 23:18:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363204197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:18:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824224533] [2023-12-25 23:18:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:18:09,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:18:09,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:18:09,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:18:09,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 23:18:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:11,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-25 23:18:11,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:18:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:13,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:18:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:16,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824224533] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:18:16,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:18:16,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 18] total 50 [2023-12-25 23:18:16,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686293725] [2023-12-25 23:18:16,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:18:16,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-25 23:18:16,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:18:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-25 23:18:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2279, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 23:18:16,175 INFO L87 Difference]: Start difference. First operand 1559 states and 2511 transitions. Second operand has 51 states, 51 states have (on average 17.529411764705884) internal successors, (894), 50 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:18:37,579 INFO L93 Difference]: Finished difference Result 39632 states and 65023 transitions. [2023-12-25 23:18:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-12-25 23:18:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 17.529411764705884) internal successors, (894), 50 states have internal predecessors, (894), 0 states have call successors, (0), 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 301 [2023-12-25 23:18:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:18:37,635 INFO L225 Difference]: With dead ends: 39632 [2023-12-25 23:18:37,635 INFO L226 Difference]: Without dead ends: 38153 [2023-12-25 23:18:37,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17591 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=6388, Invalid=38344, Unknown=0, NotChecked=0, Total=44732 [2023-12-25 23:18:37,651 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 102247 mSDsluCounter, 26164 mSDsCounter, 0 mSdLazyCounter, 10312 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102247 SdHoareTripleChecker+Valid, 26753 SdHoareTripleChecker+Invalid, 10427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 10312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:18:37,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102247 Valid, 26753 Invalid, 10427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 10312 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-25 23:18:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38153 states. [2023-12-25 23:18:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38153 to 4313. [2023-12-25 23:18:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4313 states, 4312 states have (on average 1.6287105751391466) internal successors, (7023), 4312 states have internal predecessors, (7023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 7023 transitions. [2023-12-25 23:18:37,863 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 7023 transitions. Word has length 301 [2023-12-25 23:18:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:18:37,863 INFO L495 AbstractCegarLoop]: Abstraction has 4313 states and 7023 transitions. [2023-12-25 23:18:37,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 17.529411764705884) internal successors, (894), 50 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 7023 transitions. [2023-12-25 23:18:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-25 23:18:37,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:18:37,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:18:37,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 23:18:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:18:38,080 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:18:38,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:18:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1445211417, now seen corresponding path program 1 times [2023-12-25 23:18:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:18:38,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274218656] [2023-12-25 23:18:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:18:38,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:18:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:18:40,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274218656] [2023-12-25 23:18:40,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274218656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:18:40,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:18:40,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:18:40,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038979285] [2023-12-25 23:18:40,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:18:40,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:18:40,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:18:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:18:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:18:40,473 INFO L87 Difference]: Start difference. First operand 4313 states and 7023 transitions. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:18:40,793 INFO L93 Difference]: Finished difference Result 8867 states and 14466 transitions. [2023-12-25 23:18:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:18:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 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 302 [2023-12-25 23:18:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:18:40,802 INFO L225 Difference]: With dead ends: 8867 [2023-12-25 23:18:40,802 INFO L226 Difference]: Without dead ends: 4634 [2023-12-25 23:18:40,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:18:40,808 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2273 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:18:40,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2273 Valid, 2379 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:18:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2023-12-25 23:18:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4321. [2023-12-25 23:18:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.6284722222222223) internal successors, (7035), 4320 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 7035 transitions. [2023-12-25 23:18:40,883 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 7035 transitions. Word has length 302 [2023-12-25 23:18:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:18:40,884 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 7035 transitions. [2023-12-25 23:18:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:18:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 7035 transitions. [2023-12-25 23:18:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-25 23:18:40,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:18:40,896 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:18:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 23:18:40,897 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:18:40,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:18:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1783292931, now seen corresponding path program 1 times [2023-12-25 23:18:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:18:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611201396] [2023-12-25 23:18:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:18:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:18:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 26 proven. 224 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 23:18:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:18:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611201396] [2023-12-25 23:18:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611201396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:18:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773412755] [2023-12-25 23:18:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:18:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:18:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:18:55,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:18:55,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 23:18:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:18:55,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 4668 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-25 23:18:55,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:18:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 223 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:18:57,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:18:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 15 proven. 238 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-25 23:18:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773412755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:18:59,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:18:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16, 17] total 37 [2023-12-25 23:18:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871424013] [2023-12-25 23:18:59,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:18:59,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 23:18:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:18:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 23:18:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:18:59,697 INFO L87 Difference]: Start difference. First operand 4321 states and 7035 transitions. Second operand has 38 states, 38 states have (on average 41.36842105263158) internal successors, (1572), 37 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:19:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:19:27,497 INFO L93 Difference]: Finished difference Result 113513 states and 186439 transitions. [2023-12-25 23:19:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-12-25 23:19:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 41.36842105263158) internal successors, (1572), 37 states have internal predecessors, (1572), 0 states have call successors, (0), 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 547 [2023-12-25 23:19:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:19:27,616 INFO L225 Difference]: With dead ends: 113513 [2023-12-25 23:19:27,616 INFO L226 Difference]: Without dead ends: 109280 [2023-12-25 23:19:27,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8512 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3063, Invalid=23019, Unknown=0, NotChecked=0, Total=26082 [2023-12-25 23:19:27,645 INFO L413 NwaCegarLoop]: 8235 mSDtfsCounter, 12820 mSDsluCounter, 134628 mSDsCounter, 0 mSdLazyCounter, 46834 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12820 SdHoareTripleChecker+Valid, 142863 SdHoareTripleChecker+Invalid, 46846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:19:27,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12820 Valid, 142863 Invalid, 46846 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [12 Valid, 46834 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-12-25 23:19:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109280 states. [2023-12-25 23:19:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109280 to 6286. [2023-12-25 23:19:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6286 states, 6285 states have (on average 1.634049323786794) internal successors, (10270), 6285 states have internal predecessors, (10270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:19:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 10270 transitions. [2023-12-25 23:19:28,145 INFO L78 Accepts]: Start accepts. Automaton has 6286 states and 10270 transitions. Word has length 547 [2023-12-25 23:19:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:19:28,146 INFO L495 AbstractCegarLoop]: Abstraction has 6286 states and 10270 transitions. [2023-12-25 23:19:28,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 41.36842105263158) internal successors, (1572), 37 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:19:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6286 states and 10270 transitions. [2023-12-25 23:19:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-25 23:19:28,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:19:28,156 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:19:28,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 23:19:28,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 23:19:28,373 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:19:28,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:19:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1548019393, now seen corresponding path program 1 times [2023-12-25 23:19:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:19:28,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205778826] [2023-12-25 23:19:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:19:28,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:19:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:19:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 26 proven. 224 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 23:19:41,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:19:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205778826] [2023-12-25 23:19:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205778826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:19:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064777319] [2023-12-25 23:19:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:19:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:19:41,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:19:41,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:19:41,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 23:19:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:19:43,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 4669 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-25 23:19:43,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:19:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 250 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:19:48,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:19:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 245 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:19:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064777319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:19:55,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:19:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20, 21] total 45 [2023-12-25 23:19:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484363474] [2023-12-25 23:19:55,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:19:55,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 23:19:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:19:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 23:19:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 23:19:55,386 INFO L87 Difference]: Start difference. First operand 6286 states and 10270 transitions. Second operand has 46 states, 46 states have (on average 34.608695652173914) internal successors, (1592), 45 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:15,794 INFO L93 Difference]: Finished difference Result 47449 states and 77785 transitions. [2023-12-25 23:20:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-25 23:20:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 34.608695652173914) internal successors, (1592), 45 states have internal predecessors, (1592), 0 states have call successors, (0), 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 547 [2023-12-25 23:20:15,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:15,831 INFO L225 Difference]: With dead ends: 47449 [2023-12-25 23:20:15,831 INFO L226 Difference]: Without dead ends: 41251 [2023-12-25 23:20:15,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1199 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5834 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2997, Invalid=16743, Unknown=0, NotChecked=0, Total=19740 [2023-12-25 23:20:15,841 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 33087 mSDsluCounter, 36381 mSDsCounter, 0 mSdLazyCounter, 14390 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33087 SdHoareTripleChecker+Valid, 38080 SdHoareTripleChecker+Invalid, 14454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 14390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:15,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33087 Valid, 38080 Invalid, 14454 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [64 Valid, 14390 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-25 23:20:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41251 states. [2023-12-25 23:20:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41251 to 4321. [2023-12-25 23:20:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.6254629629629629) internal successors, (7022), 4320 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 7022 transitions. [2023-12-25 23:20:16,041 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 7022 transitions. Word has length 547 [2023-12-25 23:20:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:16,042 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 7022 transitions. [2023-12-25 23:20:16,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 34.608695652173914) internal successors, (1592), 45 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 7022 transitions. [2023-12-25 23:20:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-25 23:20:16,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:16,049 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:20:16,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 23:20:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-25 23:20:16,270 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:16,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 414616913, now seen corresponding path program 1 times [2023-12-25 23:20:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:16,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018497650] [2023-12-25 23:20:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 273 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018497650] [2023-12-25 23:20:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018497650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:20:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540297701] [2023-12-25 23:20:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:35,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:20:35,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 23:20:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:38,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 4672 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 23:20:38,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:20:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:39,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:20:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540297701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:39,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:20:39,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2023-12-25 23:20:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814385382] [2023-12-25 23:20:39,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:20:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:20:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:20:39,612 INFO L87 Difference]: Start difference. First operand 4321 states and 7022 transitions. Second operand has 7 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:40,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:40,516 INFO L93 Difference]: Finished difference Result 12402 states and 20296 transitions. [2023-12-25 23:20:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:20:40,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 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 548 [2023-12-25 23:20:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:40,525 INFO L225 Difference]: With dead ends: 12402 [2023-12-25 23:20:40,525 INFO L226 Difference]: Without dead ends: 8169 [2023-12-25 23:20:40,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:20:40,531 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 1449 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:40,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 3221 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 23:20:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8169 states. [2023-12-25 23:20:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8169 to 4369. [2023-12-25 23:20:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 4368 states have (on average 1.623397435897436) internal successors, (7091), 4368 states have internal predecessors, (7091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 7091 transitions. [2023-12-25 23:20:40,626 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 7091 transitions. Word has length 548 [2023-12-25 23:20:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:40,626 INFO L495 AbstractCegarLoop]: Abstraction has 4369 states and 7091 transitions. [2023-12-25 23:20:40,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 7091 transitions. [2023-12-25 23:20:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-12-25 23:20:40,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:40,633 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:20:40,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 23:20:40,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:40,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:40,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1543709081, now seen corresponding path program 1 times [2023-12-25 23:20:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:40,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354306894] [2023-12-25 23:20:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 287 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:57,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354306894] [2023-12-25 23:20:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354306894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:20:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337543085] [2023-12-25 23:20:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:57,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:57,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:57,541 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:20:57,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 23:21:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:21:01,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 4674 conjuncts, 188 conjunts are in the unsatisfiable core [2023-12-25 23:21:01,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:21:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 266 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:21:07,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:21:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 246 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:21:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337543085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:21:16,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:21:16,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 21, 28] total 55 [2023-12-25 23:21:16,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190414419] [2023-12-25 23:21:16,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:21:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-25 23:21:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:21:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-25 23:21:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2676, Unknown=0, NotChecked=0, Total=3080 [2023-12-25 23:21:16,382 INFO L87 Difference]: Start difference. First operand 4369 states and 7091 transitions. Second operand has 56 states, 56 states have (on average 25.142857142857142) internal successors, (1408), 55 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:21:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:21:49,878 INFO L93 Difference]: Finished difference Result 55636 states and 91075 transitions. [2023-12-25 23:21:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-25 23:21:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 25.142857142857142) internal successors, (1408), 55 states have internal predecessors, (1408), 0 states have call successors, (0), 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 549 [2023-12-25 23:21:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:21:49,925 INFO L225 Difference]: With dead ends: 55636 [2023-12-25 23:21:49,925 INFO L226 Difference]: Without dead ends: 51349 [2023-12-25 23:21:49,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1268 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17978 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=8668, Invalid=39512, Unknown=0, NotChecked=0, Total=48180 [2023-12-25 23:21:49,937 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 114213 mSDsluCounter, 30381 mSDsCounter, 0 mSdLazyCounter, 13586 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114213 SdHoareTripleChecker+Valid, 30916 SdHoareTripleChecker+Invalid, 13921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 13586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:21:49,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114213 Valid, 30916 Invalid, 13921 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [335 Valid, 13586 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-25 23:21:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51349 states. [2023-12-25 23:21:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51349 to 4970. [2023-12-25 23:21:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 4969 states have (on average 1.612195612799356) internal successors, (8011), 4969 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:21:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 8011 transitions. [2023-12-25 23:21:50,215 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 8011 transitions. Word has length 549 [2023-12-25 23:21:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:21:50,216 INFO L495 AbstractCegarLoop]: Abstraction has 4970 states and 8011 transitions. [2023-12-25 23:21:50,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 25.142857142857142) internal successors, (1408), 55 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:21:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 8011 transitions. [2023-12-25 23:21:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-25 23:21:50,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:21:50,221 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:21:50,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-25 23:21:50,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 23:21:50,438 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:21:50,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:21:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2070383, now seen corresponding path program 1 times [2023-12-25 23:21:50,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:21:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642440070] [2023-12-25 23:21:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:21:50,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 246 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:22:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642440070] [2023-12-25 23:22:12,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642440070] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053266763] [2023-12-25 23:22:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:12,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:12,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:12,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:12,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 23:22:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:17,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 4678 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-25 23:22:17,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:22:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 246 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:22:22,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:22:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 246 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:22:29,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053266763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:22:29,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:22:29,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 20] total 55 [2023-12-25 23:22:29,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340204341] [2023-12-25 23:22:29,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:22:29,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-25 23:22:29,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:29,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-25 23:22:29,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=2599, Unknown=0, NotChecked=0, Total=3080 [2023-12-25 23:22:29,097 INFO L87 Difference]: Start difference. First operand 4970 states and 8011 transitions. Second operand has 56 states, 56 states have (on average 21.214285714285715) internal successors, (1188), 55 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:37,499 INFO L93 Difference]: Finished difference Result 14064 states and 22687 transitions. [2023-12-25 23:22:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-25 23:22:37,500 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 21.214285714285715) internal successors, (1188), 55 states have internal predecessors, (1188), 0 states have call successors, (0), 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 550 [2023-12-25 23:22:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:37,507 INFO L225 Difference]: With dead ends: 14064 [2023-12-25 23:22:37,508 INFO L226 Difference]: Without dead ends: 9165 [2023-12-25 23:22:37,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1059 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1778, Invalid=7152, Unknown=0, NotChecked=0, Total=8930 [2023-12-25 23:22:37,512 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 40521 mSDsluCounter, 14362 mSDsCounter, 0 mSdLazyCounter, 8576 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40521 SdHoareTripleChecker+Valid, 15197 SdHoareTripleChecker+Invalid, 8625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 8576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:37,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40521 Valid, 15197 Invalid, 8625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 8576 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-25 23:22:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9165 states. [2023-12-25 23:22:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9165 to 5239. [2023-12-25 23:22:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 1.5990836197021765) internal successors, (8376), 5238 states have internal predecessors, (8376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 8376 transitions. [2023-12-25 23:22:37,593 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 8376 transitions. Word has length 550 [2023-12-25 23:22:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:37,594 INFO L495 AbstractCegarLoop]: Abstraction has 5239 states and 8376 transitions. [2023-12-25 23:22:37,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 21.214285714285715) internal successors, (1188), 55 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 8376 transitions. [2023-12-25 23:22:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-12-25 23:22:37,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:37,599 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:22:37,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:37,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:37,820 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:37,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1142440603, now seen corresponding path program 1 times [2023-12-25 23:22:37,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:37,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983872174] [2023-12-25 23:22:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:37,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 267 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:22:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983872174] [2023-12-25 23:22:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983872174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608531843] [2023-12-25 23:22:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:59,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:59,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 23:23:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:01,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 4680 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 23:23:01,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:23:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:02,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:23:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608531843] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:23:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11, 16] total 38 [2023-12-25 23:23:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392927347] [2023-12-25 23:23:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:23:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 23:23:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:23:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 23:23:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1282, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:23:03,105 INFO L87 Difference]: Start difference. First operand 5239 states and 8376 transitions. Second operand has 13 states, 13 states have (on average 42.38461538461539) internal successors, (551), 13 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:23:04,659 INFO L93 Difference]: Finished difference Result 25957 states and 41905 transitions. [2023-12-25 23:23:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 23:23:04,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 42.38461538461539) internal successors, (551), 13 states have internal predecessors, (551), 0 states have call successors, (0), 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 551 [2023-12-25 23:23:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:23:04,676 INFO L225 Difference]: With dead ends: 25957 [2023-12-25 23:23:04,676 INFO L226 Difference]: Without dead ends: 20946 [2023-12-25 23:23:04,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=448, Invalid=3712, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 23:23:04,685 INFO L413 NwaCegarLoop]: 1789 mSDtfsCounter, 6873 mSDsluCounter, 15619 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6873 SdHoareTripleChecker+Valid, 17408 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:23:04,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6873 Valid, 17408 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 23:23:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20946 states. [2023-12-25 23:23:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20946 to 6704. [2023-12-25 23:23:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6704 states, 6703 states have (on average 1.5985379680739966) internal successors, (10715), 6703 states have internal predecessors, (10715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6704 states to 6704 states and 10715 transitions. [2023-12-25 23:23:04,840 INFO L78 Accepts]: Start accepts. Automaton has 6704 states and 10715 transitions. Word has length 551 [2023-12-25 23:23:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:23:04,841 INFO L495 AbstractCegarLoop]: Abstraction has 6704 states and 10715 transitions. [2023-12-25 23:23:04,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.38461538461539) internal successors, (551), 13 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6704 states and 10715 transitions. [2023-12-25 23:23:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-12-25 23:23:04,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:23:04,879 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:23:04,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 23:23:05,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-25 23:23:05,080 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:23:05,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:23:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1023967881, now seen corresponding path program 1 times [2023-12-25 23:23:05,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:23:05,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498098769] [2023-12-25 23:23:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:05,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:23:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 250 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 23:23:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:23:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498098769] [2023-12-25 23:23:26,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498098769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636254439] [2023-12-25 23:23:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:26,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:23:26,017 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:23:26,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 23:23:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:27,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 4681 conjuncts, 95 conjunts are in the unsatisfiable core [2023-12-25 23:23:27,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:23:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:28,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:23:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636254439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:23:30,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:23:30,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 16] total 44 [2023-12-25 23:23:30,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104019466] [2023-12-25 23:23:30,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:23:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-25 23:23:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:23:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-25 23:23:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 23:23:30,338 INFO L87 Difference]: Start difference. First operand 6704 states and 10715 transitions. Second operand has 44 states, 44 states have (on average 32.34090909090909) internal successors, (1423), 44 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:24:20,094 INFO L93 Difference]: Finished difference Result 139652 states and 226587 transitions. [2023-12-25 23:24:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 509 states. [2023-12-25 23:24:20,094 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 32.34090909090909) internal successors, (1423), 44 states have internal predecessors, (1423), 0 states have call successors, (0), 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 551 [2023-12-25 23:24:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:24:20,213 INFO L225 Difference]: With dead ends: 139652 [2023-12-25 23:24:20,213 INFO L226 Difference]: Without dead ends: 133407 [2023-12-25 23:24:20,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1709 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132597 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=21921, Invalid=281129, Unknown=0, NotChecked=0, Total=303050 [2023-12-25 23:24:20,250 INFO L413 NwaCegarLoop]: 2097 mSDtfsCounter, 62941 mSDsluCounter, 49242 mSDsCounter, 0 mSdLazyCounter, 24211 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62941 SdHoareTripleChecker+Valid, 51339 SdHoareTripleChecker+Invalid, 24291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 24211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:24:20,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62941 Valid, 51339 Invalid, 24291 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [80 Valid, 24211 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-25 23:24:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133407 states. [2023-12-25 23:24:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133407 to 8018. [2023-12-25 23:24:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8018 states, 8017 states have (on average 1.5852563302981164) internal successors, (12709), 8017 states have internal predecessors, (12709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 12709 transitions. [2023-12-25 23:24:20,873 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 12709 transitions. Word has length 551 [2023-12-25 23:24:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:24:20,873 INFO L495 AbstractCegarLoop]: Abstraction has 8018 states and 12709 transitions. [2023-12-25 23:24:20,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 32.34090909090909) internal successors, (1423), 44 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 12709 transitions. [2023-12-25 23:24:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-12-25 23:24:20,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:24:20,880 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:24:20,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-25 23:24:21,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-25 23:24:21,093 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:24:21,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:24:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash 272487033, now seen corresponding path program 1 times [2023-12-25 23:24:21,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:24:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020648046] [2023-12-25 23:24:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:24:21,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:24:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:24:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 267 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:24:42,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:24:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020648046] [2023-12-25 23:24:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020648046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:24:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113716785] [2023-12-25 23:24:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:24:42,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:24:42,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:24:42,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:24:42,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 23:24:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:24:44,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 4682 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-25 23:24:44,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:24:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 284 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:24:45,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:24:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:24:47,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113716785] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:24:47,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:24:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11, 17] total 41 [2023-12-25 23:24:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102222331] [2023-12-25 23:24:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:24:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 23:24:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:24:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 23:24:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1485, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 23:24:47,140 INFO L87 Difference]: Start difference. First operand 8018 states and 12709 transitions. Second operand has 15 states, 15 states have (on average 36.733333333333334) internal successors, (551), 15 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:24:49,057 INFO L93 Difference]: Finished difference Result 29774 states and 47487 transitions. [2023-12-25 23:24:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 23:24:49,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 36.733333333333334) internal successors, (551), 15 states have internal predecessors, (551), 0 states have call successors, (0), 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 551 [2023-12-25 23:24:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:24:49,072 INFO L225 Difference]: With dead ends: 29774 [2023-12-25 23:24:49,073 INFO L226 Difference]: Without dead ends: 22575 [2023-12-25 23:24:49,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1081 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=698, Invalid=5464, Unknown=0, NotChecked=0, Total=6162 [2023-12-25 23:24:49,078 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 9535 mSDsluCounter, 11965 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9535 SdHoareTripleChecker+Valid, 13169 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:24:49,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9535 Valid, 13169 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 23:24:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22575 states. [2023-12-25 23:24:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22575 to 8288. [2023-12-25 23:24:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8288 states, 8287 states have (on average 1.5782550983468082) internal successors, (13079), 8287 states have internal predecessors, (13079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8288 states to 8288 states and 13079 transitions. [2023-12-25 23:24:49,249 INFO L78 Accepts]: Start accepts. Automaton has 8288 states and 13079 transitions. Word has length 551 [2023-12-25 23:24:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:24:49,249 INFO L495 AbstractCegarLoop]: Abstraction has 8288 states and 13079 transitions. [2023-12-25 23:24:49,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.733333333333334) internal successors, (551), 15 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8288 states and 13079 transitions. [2023-12-25 23:24:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:24:49,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:24:49,255 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:24:49,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 23:24:49,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-25 23:24:49,468 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:24:49,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:24:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1403733111, now seen corresponding path program 1 times [2023-12-25 23:24:49,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:24:49,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324357418] [2023-12-25 23:24:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:24:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:25:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 267 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:25:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:25:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324357418] [2023-12-25 23:25:04,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324357418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:25:04,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363037707] [2023-12-25 23:25:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:25:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:25:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:25:04,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:25:04,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 23:25:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:06,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 4683 conjuncts, 95 conjunts are in the unsatisfiable core [2023-12-25 23:25:06,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:25:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:25:07,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:25:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:25:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363037707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:25:09,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:25:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 16] total 45 [2023-12-25 23:25:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510196349] [2023-12-25 23:25:09,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:25:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-25 23:25:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:25:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-25 23:25:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 23:25:09,261 INFO L87 Difference]: Start difference. First operand 8288 states and 13079 transitions. Second operand has 45 states, 45 states have (on average 31.68888888888889) internal successors, (1426), 45 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:26:05,999 INFO L93 Difference]: Finished difference Result 302441 states and 486054 transitions. [2023-12-25 23:26:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 610 states. [2023-12-25 23:26:06,000 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 31.68888888888889) internal successors, (1426), 45 states have internal predecessors, (1426), 0 states have call successors, (0), 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 552 [2023-12-25 23:26:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:26:06,381 INFO L225 Difference]: With dead ends: 302441 [2023-12-25 23:26:06,381 INFO L226 Difference]: Without dead ends: 291739 [2023-12-25 23:26:06,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1859 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 651 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192548 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=36014, Invalid=389742, Unknown=0, NotChecked=0, Total=425756 [2023-12-25 23:26:06,452 INFO L413 NwaCegarLoop]: 1805 mSDtfsCounter, 121757 mSDsluCounter, 40810 mSDsCounter, 0 mSdLazyCounter, 20293 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121757 SdHoareTripleChecker+Valid, 42615 SdHoareTripleChecker+Invalid, 20505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 20293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:26:06,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121757 Valid, 42615 Invalid, 20505 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [212 Valid, 20293 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-25 23:26:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291739 states. [2023-12-25 23:26:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291739 to 11908. [2023-12-25 23:26:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11908 states, 11907 states have (on average 1.570084824053078) internal successors, (18695), 11907 states have internal predecessors, (18695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 18695 transitions. [2023-12-25 23:26:07,896 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 18695 transitions. Word has length 552 [2023-12-25 23:26:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:26:07,896 INFO L495 AbstractCegarLoop]: Abstraction has 11908 states and 18695 transitions. [2023-12-25 23:26:07,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 31.68888888888889) internal successors, (1426), 45 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 18695 transitions. [2023-12-25 23:26:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:26:07,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:26:07,902 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:26:07,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 23:26:08,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-25 23:26:08,116 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:26:08,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:26:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1971161015, now seen corresponding path program 1 times [2023-12-25 23:26:08,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:26:08,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889586434] [2023-12-25 23:26:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:26:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:26:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:26:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 251 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 23:26:28,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:26:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889586434] [2023-12-25 23:26:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889586434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:26:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983852075] [2023-12-25 23:26:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:26:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:26:28,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:26:28,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:26:28,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 23:26:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:26:31,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 4685 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-25 23:26:31,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:26:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 244 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:26:32,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:26:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 266 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:26:33,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983852075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:26:33,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:26:33,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 28 [2023-12-25 23:26:33,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230551132] [2023-12-25 23:26:33,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:26:33,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 23:26:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:26:33,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 23:26:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-12-25 23:26:33,348 INFO L87 Difference]: Start difference. First operand 11908 states and 18695 transitions. Second operand has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:26:39,523 INFO L93 Difference]: Finished difference Result 66456 states and 107189 transitions. [2023-12-25 23:26:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 23:26:39,524 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 0 states have call successors, (0), 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 552 [2023-12-25 23:26:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:26:39,573 INFO L225 Difference]: With dead ends: 66456 [2023-12-25 23:26:39,574 INFO L226 Difference]: Without dead ends: 54638 [2023-12-25 23:26:39,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1090 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=612, Invalid=2250, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 23:26:39,595 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 13864 mSDsluCounter, 9865 mSDsCounter, 0 mSdLazyCounter, 5138 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13864 SdHoareTripleChecker+Valid, 10684 SdHoareTripleChecker+Invalid, 5149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:26:39,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13864 Valid, 10684 Invalid, 5149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5138 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 23:26:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54638 states. [2023-12-25 23:26:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54638 to 12455. [2023-12-25 23:26:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12455 states, 12454 states have (on average 1.5713826882929178) internal successors, (19570), 12454 states have internal predecessors, (19570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12455 states to 12455 states and 19570 transitions. [2023-12-25 23:26:40,063 INFO L78 Accepts]: Start accepts. Automaton has 12455 states and 19570 transitions. Word has length 552 [2023-12-25 23:26:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:26:40,064 INFO L495 AbstractCegarLoop]: Abstraction has 12455 states and 19570 transitions. [2023-12-25 23:26:40,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12455 states and 19570 transitions. [2023-12-25 23:26:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:26:40,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:26:40,070 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:26:40,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 23:26:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:26:40,271 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:26:40,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:26:40,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1848719469, now seen corresponding path program 1 times [2023-12-25 23:26:40,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:26:40,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016603220] [2023-12-25 23:26:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:26:40,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:26:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:27:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 286 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:27:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:27:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016603220] [2023-12-25 23:27:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016603220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:27:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222926808] [2023-12-25 23:27:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:27:02,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:27:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:27:02,548 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:27:02,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 23:27:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:27:04,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 4686 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-25 23:27:04,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:27:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 29 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:27:05,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:27:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:27:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222926808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:27:07,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:27:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 17] total 53 [2023-12-25 23:27:07,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309373312] [2023-12-25 23:27:07,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:27:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-25 23:27:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:27:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-25 23:27:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 23:27:07,386 INFO L87 Difference]: Start difference. First operand 12455 states and 19570 transitions. Second operand has 53 states, 53 states have (on average 27.132075471698112) internal successors, (1438), 53 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:27:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:27:38,782 INFO L93 Difference]: Finished difference Result 196975 states and 311303 transitions. [2023-12-25 23:27:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-12-25 23:27:38,782 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 27.132075471698112) internal successors, (1438), 53 states have internal predecessors, (1438), 0 states have call successors, (0), 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 552 [2023-12-25 23:27:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:27:39,104 INFO L225 Difference]: With dead ends: 196975 [2023-12-25 23:27:39,104 INFO L226 Difference]: Without dead ends: 185700 [2023-12-25 23:27:39,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1551 GetRequests, 1128 SyntacticMatches, 0 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74533 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=18693, Invalid=161507, Unknown=0, NotChecked=0, Total=180200 [2023-12-25 23:27:39,172 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 79578 mSDsluCounter, 40238 mSDsCounter, 0 mSdLazyCounter, 18301 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79578 SdHoareTripleChecker+Valid, 41487 SdHoareTripleChecker+Invalid, 18427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 18301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:27:39,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79578 Valid, 41487 Invalid, 18427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 18301 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-25 23:27:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185700 states. [2023-12-25 23:27:40,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185700 to 14027. [2023-12-25 23:27:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14027 states, 14026 states have (on average 1.543276771709682) internal successors, (21646), 14026 states have internal predecessors, (21646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:27:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14027 states to 14027 states and 21646 transitions. [2023-12-25 23:27:40,389 INFO L78 Accepts]: Start accepts. Automaton has 14027 states and 21646 transitions. Word has length 552 [2023-12-25 23:27:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:27:40,389 INFO L495 AbstractCegarLoop]: Abstraction has 14027 states and 21646 transitions. [2023-12-25 23:27:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 27.132075471698112) internal successors, (1438), 53 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:27:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 14027 states and 21646 transitions. [2023-12-25 23:27:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:27:40,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:27:40,395 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:27:40,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 23:27:40,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:27:40,596 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:27:40,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:27:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash 732751343, now seen corresponding path program 1 times [2023-12-25 23:27:40,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:27:40,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378892362] [2023-12-25 23:27:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:27:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:27:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:28:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 286 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:28:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:28:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378892362] [2023-12-25 23:28:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378892362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:28:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500562524] [2023-12-25 23:28:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:28:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:28:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:28:04,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:28:04,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 23:28:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:28:05,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 4687 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-25 23:28:05,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:28:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 284 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:28:07,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:28:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:28:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500562524] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:28:09,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:28:09,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21, 23] total 63 [2023-12-25 23:28:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212958376] [2023-12-25 23:28:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:28:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 23:28:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:28:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 23:28:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=3527, Unknown=0, NotChecked=0, Total=3906 [2023-12-25 23:28:09,208 INFO L87 Difference]: Start difference. First operand 14027 states and 21646 transitions. Second operand has 21 states, 21 states have (on average 26.285714285714285) internal successors, (552), 21 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:28:15,044 INFO L93 Difference]: Finished difference Result 60959 states and 95225 transitions. [2023-12-25 23:28:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-25 23:28:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 26.285714285714285) internal successors, (552), 21 states have internal predecessors, (552), 0 states have call successors, (0), 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 552 [2023-12-25 23:28:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:28:15,083 INFO L225 Difference]: With dead ends: 60959 [2023-12-25 23:28:15,083 INFO L226 Difference]: Without dead ends: 48432 [2023-12-25 23:28:15,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1077 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8804 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2612, Invalid=20644, Unknown=0, NotChecked=0, Total=23256 [2023-12-25 23:28:15,104 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 18226 mSDsluCounter, 18502 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18226 SdHoareTripleChecker+Valid, 19681 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:28:15,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18226 Valid, 19681 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 23:28:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48432 states. [2023-12-25 23:28:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48432 to 13849. [2023-12-25 23:28:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13849 states, 13848 states have (on average 1.5441941074523398) internal successors, (21384), 13848 states have internal predecessors, (21384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 21384 transitions. [2023-12-25 23:28:15,630 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 21384 transitions. Word has length 552 [2023-12-25 23:28:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:28:15,631 INFO L495 AbstractCegarLoop]: Abstraction has 13849 states and 21384 transitions. [2023-12-25 23:28:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 26.285714285714285) internal successors, (552), 21 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 21384 transitions. [2023-12-25 23:28:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:28:15,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:28:15,637 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:28:15,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 23:28:15,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-25 23:28:15,837 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:28:15,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:28:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1017795908, now seen corresponding path program 1 times [2023-12-25 23:28:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:28:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485075843] [2023-12-25 23:28:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:28:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:28:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:28:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-25 23:28:31,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:28:31,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485075843] [2023-12-25 23:28:31,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485075843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:28:31,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:28:31,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:28:31,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878636469] [2023-12-25 23:28:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:28:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:28:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:28:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:28:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:28:31,223 INFO L87 Difference]: Start difference. First operand 13849 states and 21384 transitions. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:28:31,785 INFO L93 Difference]: Finished difference Result 29368 states and 45361 transitions. [2023-12-25 23:28:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:28:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 552 [2023-12-25 23:28:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:28:31,795 INFO L225 Difference]: With dead ends: 29368 [2023-12-25 23:28:31,795 INFO L226 Difference]: Without dead ends: 16565 [2023-12-25 23:28:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:28:31,800 INFO L413 NwaCegarLoop]: 1118 mSDtfsCounter, 3559 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3559 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:28:31,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3559 Valid, 4258 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:28:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16565 states. [2023-12-25 23:28:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16565 to 14045. [2023-12-25 23:28:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 14044 states have (on average 1.5451438336656222) internal successors, (21700), 14044 states have internal predecessors, (21700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 21700 transitions. [2023-12-25 23:28:32,170 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 21700 transitions. Word has length 552 [2023-12-25 23:28:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:28:32,170 INFO L495 AbstractCegarLoop]: Abstraction has 14045 states and 21700 transitions. [2023-12-25 23:28:32,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 21700 transitions. [2023-12-25 23:28:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:28:32,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:28:32,177 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:28:32,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 23:28:32,177 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:28:32,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:28:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1357478366, now seen corresponding path program 1 times [2023-12-25 23:28:32,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:28:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036790546] [2023-12-25 23:28:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:28:32,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:28:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:28:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-25 23:28:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:28:44,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036790546] [2023-12-25 23:28:44,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036790546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:28:44,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:28:44,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:28:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472091614] [2023-12-25 23:28:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:28:44,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:28:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:28:44,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:28:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:28:44,684 INFO L87 Difference]: Start difference. First operand 14045 states and 21700 transitions. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:28:45,400 INFO L93 Difference]: Finished difference Result 40779 states and 62844 transitions. [2023-12-25 23:28:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:28:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 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 552 [2023-12-25 23:28:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:28:45,424 INFO L225 Difference]: With dead ends: 40779 [2023-12-25 23:28:45,424 INFO L226 Difference]: Without dead ends: 27498 [2023-12-25 23:28:45,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:28:45,437 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1197 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:28:45,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 4961 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:28:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27498 states. [2023-12-25 23:28:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27498 to 14235. [2023-12-25 23:28:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14235 states, 14234 states have (on average 1.540536743009695) internal successors, (21928), 14234 states have internal predecessors, (21928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14235 states to 14235 states and 21928 transitions. [2023-12-25 23:28:45,927 INFO L78 Accepts]: Start accepts. Automaton has 14235 states and 21928 transitions. Word has length 552 [2023-12-25 23:28:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:28:45,927 INFO L495 AbstractCegarLoop]: Abstraction has 14235 states and 21928 transitions. [2023-12-25 23:28:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:28:45,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14235 states and 21928 transitions. [2023-12-25 23:28:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:28:45,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:28:45,934 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:28:45,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 23:28:45,935 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:28:45,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:28:45,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1000678138, now seen corresponding path program 1 times [2023-12-25 23:28:45,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:28:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428019840] [2023-12-25 23:28:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:28:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:29:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:29:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-25 23:29:06,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:29:06,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428019840] [2023-12-25 23:29:06,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428019840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:29:06,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:29:06,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:29:06,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520867053] [2023-12-25 23:29:06,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:29:06,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:29:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:29:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:29:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:29:06,531 INFO L87 Difference]: Start difference. First operand 14235 states and 21928 transitions. Second operand has 8 states, 8 states have (on average 53.0) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:29:07,087 INFO L93 Difference]: Finished difference Result 29859 states and 45974 transitions. [2023-12-25 23:29:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:29:07,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 53.0) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 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 552 [2023-12-25 23:29:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:29:07,099 INFO L225 Difference]: With dead ends: 29859 [2023-12-25 23:29:07,099 INFO L226 Difference]: Without dead ends: 16614 [2023-12-25 23:29:07,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:29:07,108 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 4291 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4060 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:29:07,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4291 Valid, 4060 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:29:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16614 states. [2023-12-25 23:29:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16614 to 14308. [2023-12-25 23:29:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14308 states, 14307 states have (on average 1.5409939190605997) internal successors, (22047), 14307 states have internal predecessors, (22047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14308 states to 14308 states and 22047 transitions. [2023-12-25 23:29:07,476 INFO L78 Accepts]: Start accepts. Automaton has 14308 states and 22047 transitions. Word has length 552 [2023-12-25 23:29:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:29:07,476 INFO L495 AbstractCegarLoop]: Abstraction has 14308 states and 22047 transitions. [2023-12-25 23:29:07,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 53.0) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 14308 states and 22047 transitions. [2023-12-25 23:29:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-25 23:29:07,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:29:07,481 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:29:07,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 23:29:07,481 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:29:07,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:29:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2145641824, now seen corresponding path program 1 times [2023-12-25 23:29:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:29:07,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253697907] [2023-12-25 23:29:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:29:07,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:29:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:29:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-25 23:29:19,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:29:19,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253697907] [2023-12-25 23:29:19,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253697907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:29:19,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:29:19,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:29:19,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284337963] [2023-12-25 23:29:19,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:29:19,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:29:19,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:29:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:29:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:29:19,328 INFO L87 Difference]: Start difference. First operand 14308 states and 22047 transitions. Second operand has 7 states, 7 states have (on average 60.285714285714285) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:29:20,033 INFO L93 Difference]: Finished difference Result 42336 states and 65191 transitions. [2023-12-25 23:29:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:29:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.285714285714285) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 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 552 [2023-12-25 23:29:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:29:20,057 INFO L225 Difference]: With dead ends: 42336 [2023-12-25 23:29:20,057 INFO L226 Difference]: Without dead ends: 28357 [2023-12-25 23:29:20,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:29:20,069 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1124 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:29:20,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 4233 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:29:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28357 states. [2023-12-25 23:29:20,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28357 to 14378. [2023-12-25 23:29:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14378 states, 14377 states have (on average 1.5393336579258539) internal successors, (22131), 14377 states have internal predecessors, (22131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14378 states to 14378 states and 22131 transitions. [2023-12-25 23:29:20,523 INFO L78 Accepts]: Start accepts. Automaton has 14378 states and 22131 transitions. Word has length 552 [2023-12-25 23:29:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:29:20,523 INFO L495 AbstractCegarLoop]: Abstraction has 14378 states and 22131 transitions. [2023-12-25 23:29:20,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.285714285714285) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 14378 states and 22131 transitions. [2023-12-25 23:29:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-25 23:29:20,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:29:20,529 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:29:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-25 23:29:20,529 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:29:20,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:29:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1176761682, now seen corresponding path program 1 times [2023-12-25 23:29:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:29:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713096533] [2023-12-25 23:29:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:29:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:29:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:29:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 23:29:41,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:29:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713096533] [2023-12-25 23:29:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713096533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:29:41,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:29:41,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:29:41,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471419719] [2023-12-25 23:29:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:29:41,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:29:41,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:29:41,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:29:41,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:29:41,373 INFO L87 Difference]: Start difference. First operand 14378 states and 22131 transitions. Second operand has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:29:41,900 INFO L93 Difference]: Finished difference Result 30680 states and 47251 transitions. [2023-12-25 23:29:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:29:41,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 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 553 [2023-12-25 23:29:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:29:41,914 INFO L225 Difference]: With dead ends: 30680 [2023-12-25 23:29:41,914 INFO L226 Difference]: Without dead ends: 17851 [2023-12-25 23:29:41,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:29:41,919 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 3426 mSDsluCounter, 3237 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 4450 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:29:41,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3426 Valid, 4450 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:29:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17851 states. [2023-12-25 23:29:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17851 to 14762. [2023-12-25 23:29:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14762 states, 14761 states have (on average 1.5415622247815188) internal successors, (22755), 14761 states have internal predecessors, (22755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14762 states to 14762 states and 22755 transitions. [2023-12-25 23:29:42,283 INFO L78 Accepts]: Start accepts. Automaton has 14762 states and 22755 transitions. Word has length 553 [2023-12-25 23:29:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:29:42,283 INFO L495 AbstractCegarLoop]: Abstraction has 14762 states and 22755 transitions. [2023-12-25 23:29:42,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14762 states and 22755 transitions. [2023-12-25 23:29:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-25 23:29:42,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:29:42,288 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:29:42,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-25 23:29:42,288 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:29:42,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:29:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1812920876, now seen corresponding path program 1 times [2023-12-25 23:29:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:29:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303203292] [2023-12-25 23:29:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:29:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:29:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:29:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-25 23:29:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:29:53,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303203292] [2023-12-25 23:29:53,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303203292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:29:53,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:29:53,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:29:53,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050690726] [2023-12-25 23:29:53,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:29:53,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:29:53,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:29:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:29:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:29:53,844 INFO L87 Difference]: Start difference. First operand 14762 states and 22755 transitions. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:29:54,565 INFO L93 Difference]: Finished difference Result 41268 states and 63235 transitions. [2023-12-25 23:29:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:29:54,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 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 553 [2023-12-25 23:29:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:29:54,591 INFO L225 Difference]: With dead ends: 41268 [2023-12-25 23:29:54,591 INFO L226 Difference]: Without dead ends: 28201 [2023-12-25 23:29:54,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:29:54,604 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1010 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:29:54,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 5325 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:29:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28201 states. [2023-12-25 23:29:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28201 to 15112. [2023-12-25 23:29:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15112 states, 15111 states have (on average 1.5336509827278142) internal successors, (23175), 15111 states have internal predecessors, (23175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15112 states to 15112 states and 23175 transitions. [2023-12-25 23:29:55,079 INFO L78 Accepts]: Start accepts. Automaton has 15112 states and 23175 transitions. Word has length 553 [2023-12-25 23:29:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:29:55,079 INFO L495 AbstractCegarLoop]: Abstraction has 15112 states and 23175 transitions. [2023-12-25 23:29:55,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:29:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15112 states and 23175 transitions. [2023-12-25 23:29:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-25 23:29:55,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:29:55,085 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:29:55,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-25 23:29:55,085 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:29:55,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:29:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1013386045, now seen corresponding path program 1 times [2023-12-25 23:29:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:29:55,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328640013] [2023-12-25 23:29:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:29:55,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:29:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:30:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-25 23:30:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:30:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328640013] [2023-12-25 23:30:00,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328640013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:30:00,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:30:00,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:30:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147779110] [2023-12-25 23:30:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:30:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:30:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:30:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:30:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:30:00,307 INFO L87 Difference]: Start difference. First operand 15112 states and 23175 transitions. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:30:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:30:00,666 INFO L93 Difference]: Finished difference Result 28791 states and 44142 transitions. [2023-12-25 23:30:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:30:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2023-12-25 23:30:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:30:00,678 INFO L225 Difference]: With dead ends: 28791 [2023-12-25 23:30:00,678 INFO L226 Difference]: Without dead ends: 15264 [2023-12-25 23:30:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:30:00,686 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 442 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:30:00,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1932 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:30:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15264 states. [2023-12-25 23:30:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15264 to 15226. [2023-12-25 23:30:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15226 states, 15225 states have (on average 1.532151067323481) internal successors, (23327), 15225 states have internal predecessors, (23327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:30:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15226 states to 15226 states and 23327 transitions. [2023-12-25 23:30:01,050 INFO L78 Accepts]: Start accepts. Automaton has 15226 states and 23327 transitions. Word has length 553 [2023-12-25 23:30:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:30:01,050 INFO L495 AbstractCegarLoop]: Abstraction has 15226 states and 23327 transitions. [2023-12-25 23:30:01,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:30:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 15226 states and 23327 transitions. [2023-12-25 23:30:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-25 23:30:01,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:30:01,056 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:30:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-25 23:30:01,056 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:30:01,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:30:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 405670975, now seen corresponding path program 1 times [2023-12-25 23:30:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:30:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681651975] [2023-12-25 23:30:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:30:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-25 23:30:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-25 23:30:04,200 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:30:04,207 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 23:30:04,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-25 23:30:04,208 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 554 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [681651975] and IpTcStrategyModuleZ3 [1465691569]. [2023-12-25 23:30:04,211 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:30:04,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 23:30:04,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 11:30:04 BoogieIcfgContainer [2023-12-25 23:30:04,214 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 23:30:04,215 INFO L158 Benchmark]: Toolchain (without parser) took 783019.20ms. Allocated memory was 342.9MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 291.8MB in the beginning and 1.1GB in the end (delta: -773.9MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-25 23:30:04,215 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 23:30:04,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 636.43ms. Allocated memory is still 342.9MB. Free memory was 291.3MB in the beginning and 246.2MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-25 23:30:04,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 295.13ms. Allocated memory is still 342.9MB. Free memory was 246.2MB in the beginning and 272.7MB in the end (delta: -26.5MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-25 23:30:04,215 INFO L158 Benchmark]: Boogie Preprocessor took 363.31ms. Allocated memory is still 342.9MB. Free memory was 272.7MB in the beginning and 252.4MB in the end (delta: 20.3MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. [2023-12-25 23:30:04,215 INFO L158 Benchmark]: RCFGBuilder took 1992.98ms. Allocated memory was 342.9MB in the beginning and 578.8MB in the end (delta: 235.9MB). Free memory was 252.4MB in the beginning and 451.7MB in the end (delta: -199.3MB). Peak memory consumption was 89.6MB. Max. memory is 8.0GB. [2023-12-25 23:30:04,216 INFO L158 Benchmark]: TraceAbstraction took 779724.41ms. Allocated memory was 578.8MB in the beginning and 2.3GB in the end (delta: 1.8GB). Free memory was 450.7MB in the beginning and 1.1GB in the end (delta: -615.1MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-25 23:30:04,216 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 636.43ms. Allocated memory is still 342.9MB. Free memory was 291.3MB in the beginning and 246.2MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 295.13ms. Allocated memory is still 342.9MB. Free memory was 246.2MB in the beginning and 272.7MB in the end (delta: -26.5MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 363.31ms. Allocated memory is still 342.9MB. Free memory was 272.7MB in the beginning and 252.4MB in the end (delta: 20.3MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1992.98ms. Allocated memory was 342.9MB in the beginning and 578.8MB in the end (delta: 235.9MB). Free memory was 252.4MB in the beginning and 451.7MB in the end (delta: -199.3MB). Peak memory consumption was 89.6MB. Max. memory is 8.0GB. * TraceAbstraction took 779724.41ms. Allocated memory was 578.8MB in the beginning and 2.3GB in the end (delta: 1.8GB). Free memory was 450.7MB in the beginning and 1.1GB in the end (delta: -615.1MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 554 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [681651975] and IpTcStrategyModuleZ3 [1465691569]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 408 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 779.7s, OverallIterations: 45, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 282.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 708693 SdHoareTripleChecker+Valid, 103.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 708693 mSDsluCounter, 574792 SdHoareTripleChecker+Invalid, 89.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 526238 mSDsCounter, 1136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 173139 IncrementalHoareTripleChecker+Invalid, 174275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1136 mSolverCounterUnsat, 48554 mSDtfsCounter, 173139 mSolverCounterSat, 1.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17581 GetRequests, 14406 SyntacticMatches, 2 SemanticMatches, 3173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465601 ImplicationChecksByTransitivity, 153.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15226occurred in iteration=44, InterpolantAutomatonStates: 2640, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 44 MinimizatonAttempts, 979678 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.6s SsaConstructionTime, 322.5s SatisfiabilityAnalysisTime, 151.4s InterpolantComputationTime, 22504 NumberOfCodeBlocks, 22504 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 29087 ConstructedInterpolants, 0 QuantifiedInterpolants, 284160 SizeOfPredicates, 505 NumberOfNonLiveVariables, 66137 ConjunctsInSsa, 1405 ConjunctsInUnsatCore, 73 InterpolantComputations, 34 PerfectInterpolantSequences, 10225/12413 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown