/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:01:18,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:01:18,706 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:01:18,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:01:18,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:01:18,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:01:18,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:01:18,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:01:18,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:01:18,730 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:01:18,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:01:18,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:01:18,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:01:18,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:01:18,731 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:01:18,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:01:18,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:01:18,736 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:01:18,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:01:18,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:01:18,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:01:18,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:01:18,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:01:18,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:01:18,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:01:18,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:01:18,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:01:18,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:01:18,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:01:18,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:01:18,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:01:18,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:01:18,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:01:18,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:01:18,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:01:18,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:01:18,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:01:18,742 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:01:19,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:01:19,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:01:19,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:01:19,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:01:19,049 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:01:19,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18.c [2023-12-15 19:01:20,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:01:20,292 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:01:20,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label18.c [2023-12-15 19:01:20,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493841ec7/35f7cc24050b4d85913018f8a59b637c/FLAG7304d18cd [2023-12-15 19:01:20,315 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493841ec7/35f7cc24050b4d85913018f8a59b637c [2023-12-15 19:01:20,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:01:20,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:01:20,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:01:20,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:01:20,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:01:20,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:20,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b26eea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20, skipping insertion in model container [2023-12-15 19:01:20,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:20,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:01:20,485 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label18.c[1259,1272] [2023-12-15 19:01:20,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:01:20,783 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:01:20,792 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label18.c[1259,1272] [2023-12-15 19:01:20,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:01:20,986 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:01:20,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20 WrapperNode [2023-12-15 19:01:20,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:01:20,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:01:20,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:01:20,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:01:20,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,218 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2023-12-15 19:01:21,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:01:21,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:01:21,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:01:21,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:01:21,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,314 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:01:21,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:01:21,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:01:21,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:01:21,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:01:21,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (1/1) ... [2023-12-15 19:01:21,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:01:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:21,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:01:21,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:01:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:01:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:01:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:01:21,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:01:21,599 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:01:21,600 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:01:23,477 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:01:23,508 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:01:23,508 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:01:23,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:01:23 BoogieIcfgContainer [2023-12-15 19:01:23,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:01:23,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:01:23,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:01:23,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:01:23,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:01:20" (1/3) ... [2023-12-15 19:01:23,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1788958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:01:23, skipping insertion in model container [2023-12-15 19:01:23,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:20" (2/3) ... [2023-12-15 19:01:23,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1788958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:01:23, skipping insertion in model container [2023-12-15 19:01:23,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:01:23" (3/3) ... [2023-12-15 19:01:23,514 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label18.c [2023-12-15 19:01:23,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:01:23,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:01:23,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:01:23,559 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;@397149a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:01:23,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:01:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-15 19:01:23,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:23,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:23,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:23,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1365127789, now seen corresponding path program 1 times [2023-12-15 19:01:23,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:23,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540224797] [2023-12-15 19:01:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:23,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:23,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540224797] [2023-12-15 19:01:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540224797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:23,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018974134] [2023-12-15 19:01:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:01:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:01:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:01:23,700 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:23,751 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-12-15 19:01:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:01:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-15 19:01:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:23,769 INFO L225 Difference]: With dead ends: 723 [2023-12-15 19:01:23,769 INFO L226 Difference]: Without dead ends: 360 [2023-12-15 19:01:23,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:01:23,774 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:23,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:01:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-15 19:01:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-15 19:01:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-12-15 19:01:23,828 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 7 [2023-12-15 19:01:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:23,830 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-12-15 19:01:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-12-15 19:01:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-15 19:01:23,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:23,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:01:23,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:23,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1366937352, now seen corresponding path program 1 times [2023-12-15 19:01:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331118664] [2023-12-15 19:01:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:23,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331118664] [2023-12-15 19:01:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331118664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319328656] [2023-12-15 19:01:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:23,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:23,870 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:25,420 INFO L93 Difference]: Finished difference Result 1046 states and 1824 transitions. [2023-12-15 19:01:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:25,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-15 19:01:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:25,425 INFO L225 Difference]: With dead ends: 1046 [2023-12-15 19:01:25,425 INFO L226 Difference]: Without dead ends: 687 [2023-12-15 19:01:25,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:25,426 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 329 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:25,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 193 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:01:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-15 19:01:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 679. [2023-12-15 19:01:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6106194690265487) internal successors, (1092), 678 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1092 transitions. [2023-12-15 19:01:25,448 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1092 transitions. Word has length 7 [2023-12-15 19:01:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1092 transitions. [2023-12-15 19:01:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1092 transitions. [2023-12-15 19:01:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 19:01:25,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:25,450 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:01:25,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:01:25,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:25,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1066365223, now seen corresponding path program 1 times [2023-12-15 19:01:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:25,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639002476] [2023-12-15 19:01:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:25,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639002476] [2023-12-15 19:01:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639002476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:25,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:25,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69987849] [2023-12-15 19:01:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:25,597 INFO L87 Difference]: Start difference. First operand 679 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:26,934 INFO L93 Difference]: Finished difference Result 1963 states and 3170 transitions. [2023-12-15 19:01:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-15 19:01:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:26,938 INFO L225 Difference]: With dead ends: 1963 [2023-12-15 19:01:26,938 INFO L226 Difference]: Without dead ends: 1285 [2023-12-15 19:01:26,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:26,941 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:26,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 358 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-15 19:01:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1280. [2023-12-15 19:01:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3956215793588742) internal successors, (1785), 1279 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:26,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1785 transitions. [2023-12-15 19:01:26,975 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1785 transitions. Word has length 75 [2023-12-15 19:01:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:26,992 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1785 transitions. [2023-12-15 19:01:26,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1785 transitions. [2023-12-15 19:01:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 19:01:26,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:26,994 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:01:26,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:01:26,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:26,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash -559910381, now seen corresponding path program 1 times [2023-12-15 19:01:26,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:26,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342826096] [2023-12-15 19:01:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:26,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342826096] [2023-12-15 19:01:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342826096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:27,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:27,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554843641] [2023-12-15 19:01:27,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:27,240 INFO L87 Difference]: Start difference. First operand 1280 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:28,613 INFO L93 Difference]: Finished difference Result 3765 states and 5245 transitions. [2023-12-15 19:01:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-15 19:01:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:28,620 INFO L225 Difference]: With dead ends: 3765 [2023-12-15 19:01:28,620 INFO L226 Difference]: Without dead ends: 2486 [2023-12-15 19:01:28,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:28,622 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 320 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:28,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 634 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-15 19:01:28,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-15 19:01:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.2446680080482897) internal successors, (3093), 2485 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3093 transitions. [2023-12-15 19:01:28,654 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3093 transitions. Word has length 83 [2023-12-15 19:01:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:28,655 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3093 transitions. [2023-12-15 19:01:28,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3093 transitions. [2023-12-15 19:01:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 19:01:28,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:28,656 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:01:28,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:01:28,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:28,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash 469544423, now seen corresponding path program 1 times [2023-12-15 19:01:28,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:28,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97807798] [2023-12-15 19:01:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:28,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:28,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97807798] [2023-12-15 19:01:28,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97807798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:28,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:28,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:28,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988613420] [2023-12-15 19:01:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:28,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:28,782 INFO L87 Difference]: Start difference. First operand 2486 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:30,291 INFO L93 Difference]: Finished difference Result 6172 states and 7858 transitions. [2023-12-15 19:01:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-15 19:01:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:30,309 INFO L225 Difference]: With dead ends: 6172 [2023-12-15 19:01:30,309 INFO L226 Difference]: Without dead ends: 3687 [2023-12-15 19:01:30,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:30,312 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 233 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:30,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 362 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:01:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2023-12-15 19:01:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3386. [2023-12-15 19:01:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.2115214180206795) internal successors, (4101), 3385 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4101 transitions. [2023-12-15 19:01:30,365 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4101 transitions. Word has length 89 [2023-12-15 19:01:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:30,365 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 4101 transitions. [2023-12-15 19:01:30,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4101 transitions. [2023-12-15 19:01:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-15 19:01:30,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:30,368 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:01:30,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:01:30,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:30,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1727371704, now seen corresponding path program 1 times [2023-12-15 19:01:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186398635] [2023-12-15 19:01:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:30,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:30,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186398635] [2023-12-15 19:01:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186398635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:30,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:30,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805039422] [2023-12-15 19:01:30,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:30,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:30,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:30,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:30,603 INFO L87 Difference]: Start difference. First operand 3386 states and 4101 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:32,012 INFO L93 Difference]: Finished difference Result 7973 states and 9876 transitions. [2023-12-15 19:01:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:32,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-15 19:01:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:32,040 INFO L225 Difference]: With dead ends: 7973 [2023-12-15 19:01:32,040 INFO L226 Difference]: Without dead ends: 4588 [2023-12-15 19:01:32,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:32,045 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 320 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:32,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 611 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2023-12-15 19:01:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 4586. [2023-12-15 19:01:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4586 states, 4585 states have (on average 1.1816793893129771) internal successors, (5418), 4585 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4586 states to 4586 states and 5418 transitions. [2023-12-15 19:01:32,167 INFO L78 Accepts]: Start accepts. Automaton has 4586 states and 5418 transitions. Word has length 203 [2023-12-15 19:01:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:32,168 INFO L495 AbstractCegarLoop]: Abstraction has 4586 states and 5418 transitions. [2023-12-15 19:01:32,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4586 states and 5418 transitions. [2023-12-15 19:01:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-15 19:01:32,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:32,175 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-15 19:01:32,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:01:32,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:32,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 494925916, now seen corresponding path program 1 times [2023-12-15 19:01:32,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:32,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242803682] [2023-12-15 19:01:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:32,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:32,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:32,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242803682] [2023-12-15 19:01:32,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242803682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:32,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:32,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:32,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860963801] [2023-12-15 19:01:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:32,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:32,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:32,621 INFO L87 Difference]: Start difference. First operand 4586 states and 5418 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:33,909 INFO L93 Difference]: Finished difference Result 10373 states and 12512 transitions. [2023-12-15 19:01:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:33,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 289 [2023-12-15 19:01:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:33,964 INFO L225 Difference]: With dead ends: 10373 [2023-12-15 19:01:33,964 INFO L226 Difference]: Without dead ends: 5788 [2023-12-15 19:01:33,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:33,971 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 321 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:33,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 627 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2023-12-15 19:01:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5484. [2023-12-15 19:01:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 1.1743571037753056) internal successors, (6439), 5483 states have internal predecessors, (6439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 6439 transitions. [2023-12-15 19:01:34,085 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 6439 transitions. Word has length 289 [2023-12-15 19:01:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:34,086 INFO L495 AbstractCegarLoop]: Abstraction has 5484 states and 6439 transitions. [2023-12-15 19:01:34,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 6439 transitions. [2023-12-15 19:01:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-15 19:01:34,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:34,089 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:34,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:01:34,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:34,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:34,089 INFO L85 PathProgramCache]: Analyzing trace with hash 879917743, now seen corresponding path program 1 times [2023-12-15 19:01:34,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301650901] [2023-12-15 19:01:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:34,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 19:01:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301650901] [2023-12-15 19:01:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301650901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:35,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607217140] [2023-12-15 19:01:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:35,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:35,019 INFO L87 Difference]: Start difference. First operand 5484 states and 6439 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:36,089 INFO L93 Difference]: Finished difference Result 11266 states and 13188 transitions. [2023-12-15 19:01:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 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 367 [2023-12-15 19:01:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:36,102 INFO L225 Difference]: With dead ends: 11266 [2023-12-15 19:01:36,102 INFO L226 Difference]: Without dead ends: 5783 [2023-12-15 19:01:36,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:36,109 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:36,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 352 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:01:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2023-12-15 19:01:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5783. [2023-12-15 19:01:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5782 states have (on average 1.166378415773089) internal successors, (6744), 5782 states have internal predecessors, (6744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 6744 transitions. [2023-12-15 19:01:36,174 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 6744 transitions. Word has length 367 [2023-12-15 19:01:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:36,175 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 6744 transitions. [2023-12-15 19:01:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 6744 transitions. [2023-12-15 19:01:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 19:01:36,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:36,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:01:36,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:01:36,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:36,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash -812608433, now seen corresponding path program 1 times [2023-12-15 19:01:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626337565] [2023-12-15 19:01:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-15 19:01:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626337565] [2023-12-15 19:01:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626337565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:36,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:36,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105974744] [2023-12-15 19:01:36,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:36,502 INFO L87 Difference]: Start difference. First operand 5783 states and 6744 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:38,475 INFO L93 Difference]: Finished difference Result 14555 states and 17043 transitions. [2023-12-15 19:01:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 458 [2023-12-15 19:01:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:38,495 INFO L225 Difference]: With dead ends: 14555 [2023-12-15 19:01:38,495 INFO L226 Difference]: Without dead ends: 9072 [2023-12-15 19:01:38,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:38,519 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 147 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:38,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:01:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2023-12-15 19:01:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 7577. [2023-12-15 19:01:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7577 states, 7576 states have (on average 1.148363252375924) internal successors, (8700), 7576 states have internal predecessors, (8700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7577 states to 7577 states and 8700 transitions. [2023-12-15 19:01:38,706 INFO L78 Accepts]: Start accepts. Automaton has 7577 states and 8700 transitions. Word has length 458 [2023-12-15 19:01:38,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:38,707 INFO L495 AbstractCegarLoop]: Abstraction has 7577 states and 8700 transitions. [2023-12-15 19:01:38,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7577 states and 8700 transitions. [2023-12-15 19:01:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-15 19:01:38,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:38,733 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:38,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:01:38,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:38,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1489620479, now seen corresponding path program 1 times [2023-12-15 19:01:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050650136] [2023-12-15 19:01:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-15 19:01:39,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050650136] [2023-12-15 19:01:39,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050650136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:39,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:39,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:39,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031880948] [2023-12-15 19:01:39,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:39,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:39,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:39,127 INFO L87 Difference]: Start difference. First operand 7577 states and 8700 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:40,558 INFO L93 Difference]: Finished difference Result 17245 states and 20050 transitions. [2023-12-15 19:01:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 491 [2023-12-15 19:01:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:40,572 INFO L225 Difference]: With dead ends: 17245 [2023-12-15 19:01:40,572 INFO L226 Difference]: Without dead ends: 9968 [2023-12-15 19:01:40,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:40,579 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 409 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:40,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 444 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2023-12-15 19:01:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 9968. [2023-12-15 19:01:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9967 states have (on average 1.1498946523527642) internal successors, (11461), 9967 states have internal predecessors, (11461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 11461 transitions. [2023-12-15 19:01:40,671 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 11461 transitions. Word has length 491 [2023-12-15 19:01:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:40,671 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 11461 transitions. [2023-12-15 19:01:40,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:40,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 11461 transitions. [2023-12-15 19:01:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-15 19:01:40,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:40,677 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:40,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:01:40,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:40,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:40,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1251148983, now seen corresponding path program 1 times [2023-12-15 19:01:40,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:40,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108229862] [2023-12-15 19:01:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-15 19:01:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108229862] [2023-12-15 19:01:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108229862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:41,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:41,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890133209] [2023-12-15 19:01:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:41,020 INFO L87 Difference]: Start difference. First operand 9968 states and 11461 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:42,789 INFO L93 Difference]: Finished difference Result 24135 states and 27999 transitions. [2023-12-15 19:01:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 495 [2023-12-15 19:01:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:42,811 INFO L225 Difference]: With dead ends: 24135 [2023-12-15 19:01:42,811 INFO L226 Difference]: Without dead ends: 14467 [2023-12-15 19:01:42,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:42,822 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 248 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:42,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 616 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:01:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14467 states. [2023-12-15 19:01:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14467 to 14456. [2023-12-15 19:01:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14456 states, 14455 states have (on average 1.1342096160498099) internal successors, (16395), 14455 states have internal predecessors, (16395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14456 states to 14456 states and 16395 transitions. [2023-12-15 19:01:43,080 INFO L78 Accepts]: Start accepts. Automaton has 14456 states and 16395 transitions. Word has length 495 [2023-12-15 19:01:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:43,081 INFO L495 AbstractCegarLoop]: Abstraction has 14456 states and 16395 transitions. [2023-12-15 19:01:43,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 14456 states and 16395 transitions. [2023-12-15 19:01:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-12-15 19:01:43,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:43,087 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:01:43,087 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:43,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash 61357297, now seen corresponding path program 1 times [2023-12-15 19:01:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416479220] [2023-12-15 19:01:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 335 proven. 190 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 19:01:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416479220] [2023-12-15 19:01:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416479220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718982645] [2023-12-15 19:01:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:43,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:43,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:43,820 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) [2023-12-15 19:01:43,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:01:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:44,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:44,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-15 19:01:49,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718982645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:49,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:49,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267033012] [2023-12-15 19:01:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:49,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:49,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:49,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:49,088 INFO L87 Difference]: Start difference. First operand 14456 states and 16395 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:50,563 INFO L93 Difference]: Finished difference Result 36990 states and 41847 transitions. [2023-12-15 19:01:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 [2023-12-15 19:01:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:50,594 INFO L225 Difference]: With dead ends: 36990 [2023-12-15 19:01:50,595 INFO L226 Difference]: Without dead ends: 22834 [2023-12-15 19:01:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:50,612 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 295 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 165 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22834 states. [2023-12-15 19:01:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22834 to 19243. [2023-12-15 19:01:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19243 states, 19242 states have (on average 1.1270138239268268) internal successors, (21686), 19242 states have internal predecessors, (21686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19243 states to 19243 states and 21686 transitions. [2023-12-15 19:01:50,915 INFO L78 Accepts]: Start accepts. Automaton has 19243 states and 21686 transitions. Word has length 549 [2023-12-15 19:01:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:50,915 INFO L495 AbstractCegarLoop]: Abstraction has 19243 states and 21686 transitions. [2023-12-15 19:01:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 19243 states and 21686 transitions. [2023-12-15 19:01:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-12-15 19:01:50,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:50,922 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:50,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:51,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:01:51,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:51,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash 576522647, now seen corresponding path program 1 times [2023-12-15 19:01:51,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:51,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744478139] [2023-12-15 19:01:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:51,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 576 proven. 39 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-15 19:01:51,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744478139] [2023-12-15 19:01:51,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744478139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064748470] [2023-12-15 19:01:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:51,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:51,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:51,594 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) [2023-12-15 19:01:51,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:01:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:51,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:51,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-15 19:01:51,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064748470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:51,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:51,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:51,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312833841] [2023-12-15 19:01:51,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:51,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:51,828 INFO L87 Difference]: Start difference. First operand 19243 states and 21686 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:53,122 INFO L93 Difference]: Finished difference Result 42669 states and 47987 transitions. [2023-12-15 19:01:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 569 [2023-12-15 19:01:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:53,173 INFO L225 Difference]: With dead ends: 42669 [2023-12-15 19:01:53,173 INFO L226 Difference]: Without dead ends: 23726 [2023-12-15 19:01:53,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:53,199 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 268 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:53,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 237 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23726 states. [2023-12-15 19:01:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23726 to 20735. [2023-12-15 19:01:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20735 states, 20734 states have (on average 1.121250120574901) internal successors, (23248), 20734 states have internal predecessors, (23248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20735 states to 20735 states and 23248 transitions. [2023-12-15 19:01:53,432 INFO L78 Accepts]: Start accepts. Automaton has 20735 states and 23248 transitions. Word has length 569 [2023-12-15 19:01:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:53,433 INFO L495 AbstractCegarLoop]: Abstraction has 20735 states and 23248 transitions. [2023-12-15 19:01:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 20735 states and 23248 transitions. [2023-12-15 19:01:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-15 19:01:53,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:53,438 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:53,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:53,644 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,SelfDestructingSolverStorable12 [2023-12-15 19:01:53,644 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:53,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1682624556, now seen corresponding path program 1 times [2023-12-15 19:01:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589160902] [2023-12-15 19:01:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 578 proven. 39 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-12-15 19:01:54,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:54,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589160902] [2023-12-15 19:01:54,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589160902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:54,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805617952] [2023-12-15 19:01:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:54,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:54,074 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) [2023-12-15 19:01:54,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:01:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:54,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:54,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-15 19:01:54,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:54,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805617952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:54,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:54,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934036854] [2023-12-15 19:01:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:54,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:54,362 INFO L87 Difference]: Start difference. First operand 20735 states and 23248 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:55,678 INFO L93 Difference]: Finished difference Result 40268 states and 45196 transitions. [2023-12-15 19:01:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 570 [2023-12-15 19:01:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:55,702 INFO L225 Difference]: With dead ends: 40268 [2023-12-15 19:01:55,702 INFO L226 Difference]: Without dead ends: 19833 [2023-12-15 19:01:55,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:55,722 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 252 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:55,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 596 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19833 states. [2023-12-15 19:01:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19833 to 19533. [2023-12-15 19:01:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19533 states, 19532 states have (on average 1.075363506041368) internal successors, (21004), 19532 states have internal predecessors, (21004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19533 states to 19533 states and 21004 transitions. [2023-12-15 19:01:56,104 INFO L78 Accepts]: Start accepts. Automaton has 19533 states and 21004 transitions. Word has length 570 [2023-12-15 19:01:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:56,104 INFO L495 AbstractCegarLoop]: Abstraction has 19533 states and 21004 transitions. [2023-12-15 19:01:56,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 19533 states and 21004 transitions. [2023-12-15 19:01:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-12-15 19:01:56,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:56,112 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:01:56,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:56,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:56,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash -861395358, now seen corresponding path program 1 times [2023-12-15 19:01:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064412858] [2023-12-15 19:01:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 505 proven. 39 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-15 19:01:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064412858] [2023-12-15 19:01:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064412858] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824451037] [2023-12-15 19:01:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:56,965 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) [2023-12-15 19:01:56,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:01:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:57,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:01:57,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-15 19:01:57,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:57,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824451037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:57,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:57,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099844414] [2023-12-15 19:01:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:57,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:01:57,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:01:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:57,755 INFO L87 Difference]: Start difference. First operand 19533 states and 21004 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:59,503 INFO L93 Difference]: Finished difference Result 40263 states and 43339 transitions. [2023-12-15 19:01:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 571 [2023-12-15 19:01:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:59,525 INFO L225 Difference]: With dead ends: 40263 [2023-12-15 19:01:59,526 INFO L226 Difference]: Without dead ends: 20731 [2023-12-15 19:01:59,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:59,567 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 316 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:59,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 352 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:01:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20731 states. [2023-12-15 19:01:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20731 to 20431. [2023-12-15 19:01:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20431 states, 20430 states have (on average 1.0739598629466471) internal successors, (21941), 20430 states have internal predecessors, (21941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20431 states to 20431 states and 21941 transitions. [2023-12-15 19:01:59,748 INFO L78 Accepts]: Start accepts. Automaton has 20431 states and 21941 transitions. Word has length 571 [2023-12-15 19:01:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:59,748 INFO L495 AbstractCegarLoop]: Abstraction has 20431 states and 21941 transitions. [2023-12-15 19:01:59,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20431 states and 21941 transitions. [2023-12-15 19:01:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-15 19:01:59,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:59,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 19:01:59,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:01:59,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:01:59,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:59,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -809395161, now seen corresponding path program 1 times [2023-12-15 19:01:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568286404] [2023-12-15 19:01:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-15 19:02:00,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568286404] [2023-12-15 19:02:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568286404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:00,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:02:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068022401] [2023-12-15 19:02:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:02:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:02:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:00,288 INFO L87 Difference]: Start difference. First operand 20431 states and 21941 transitions. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:01,489 INFO L93 Difference]: Finished difference Result 50736 states and 54531 transitions. [2023-12-15 19:02:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:02:01,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 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 586 [2023-12-15 19:02:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:01,515 INFO L225 Difference]: With dead ends: 50736 [2023-12-15 19:02:01,515 INFO L226 Difference]: Without dead ends: 26718 [2023-12-15 19:02:01,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:01,532 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 241 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:01,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 519 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:02:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26718 states. [2023-12-15 19:02:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26718 to 24027. [2023-12-15 19:02:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24027 states, 24026 states have (on average 1.04903021726463) internal successors, (25204), 24026 states have internal predecessors, (25204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24027 states to 24027 states and 25204 transitions. [2023-12-15 19:02:01,748 INFO L78 Accepts]: Start accepts. Automaton has 24027 states and 25204 transitions. Word has length 586 [2023-12-15 19:02:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:01,748 INFO L495 AbstractCegarLoop]: Abstraction has 24027 states and 25204 transitions. [2023-12-15 19:02:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 24027 states and 25204 transitions. [2023-12-15 19:02:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-12-15 19:02:01,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:01,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:02:01,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:02:01,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:01,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash 626652385, now seen corresponding path program 1 times [2023-12-15 19:02:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:01,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700885586] [2023-12-15 19:02:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2023-12-15 19:02:02,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700885586] [2023-12-15 19:02:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700885586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:02,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:02:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109350868] [2023-12-15 19:02:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:02,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:02:02,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:02:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:02,214 INFO L87 Difference]: Start difference. First operand 24027 states and 25204 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:03,439 INFO L93 Difference]: Finished difference Result 52256 states and 54805 transitions. [2023-12-15 19:02:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:02:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 626 [2023-12-15 19:02:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:03,467 INFO L225 Difference]: With dead ends: 52256 [2023-12-15 19:02:03,468 INFO L226 Difference]: Without dead ends: 27931 [2023-12-15 19:02:03,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:03,482 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 343 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:03,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 176 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:02:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27931 states. [2023-12-15 19:02:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27931 to 25220. [2023-12-15 19:02:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25220 states, 25219 states have (on average 1.046353939490067) internal successors, (26388), 25219 states have internal predecessors, (26388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25220 states to 25220 states and 26388 transitions. [2023-12-15 19:02:03,724 INFO L78 Accepts]: Start accepts. Automaton has 25220 states and 26388 transitions. Word has length 626 [2023-12-15 19:02:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:03,724 INFO L495 AbstractCegarLoop]: Abstraction has 25220 states and 26388 transitions. [2023-12-15 19:02:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 25220 states and 26388 transitions. [2023-12-15 19:02:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-15 19:02:03,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:03,730 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:02:03,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:02:03,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:03,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1475336906, now seen corresponding path program 1 times [2023-12-15 19:02:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:03,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099243799] [2023-12-15 19:02:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2023-12-15 19:02:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099243799] [2023-12-15 19:02:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099243799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:04,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:02:04,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208587221] [2023-12-15 19:02:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:04,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:02:04,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:02:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:04,251 INFO L87 Difference]: Start difference. First operand 25220 states and 26388 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:05,145 INFO L93 Difference]: Finished difference Result 52231 states and 54624 transitions. [2023-12-15 19:02:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:02:05,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 632 [2023-12-15 19:02:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:05,208 INFO L225 Difference]: With dead ends: 52231 [2023-12-15 19:02:05,209 INFO L226 Difference]: Without dead ends: 27012 [2023-12-15 19:02:05,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:05,223 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 237 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:05,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 558 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:02:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27012 states. [2023-12-15 19:02:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27012 to 26115. [2023-12-15 19:02:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26115 states, 26114 states have (on average 1.0428122845982997) internal successors, (27232), 26114 states have internal predecessors, (27232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26115 states to 26115 states and 27232 transitions. [2023-12-15 19:02:05,461 INFO L78 Accepts]: Start accepts. Automaton has 26115 states and 27232 transitions. Word has length 632 [2023-12-15 19:02:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:05,462 INFO L495 AbstractCegarLoop]: Abstraction has 26115 states and 27232 transitions. [2023-12-15 19:02:05,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 26115 states and 27232 transitions. [2023-12-15 19:02:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-12-15 19:02:05,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:05,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:02:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:02:05,485 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:05,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash 969313033, now seen corresponding path program 1 times [2023-12-15 19:02:05,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:05,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324088728] [2023-12-15 19:02:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:05,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 222 proven. 269 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 19:02:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324088728] [2023-12-15 19:02:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324088728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:02:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735540032] [2023-12-15 19:02:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:06,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:02:06,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:02:06,382 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) [2023-12-15 19:02:06,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:02:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:06,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:02:06,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:02:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 19:02:07,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:02:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 19:02:17,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735540032] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:02:17,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:02:17,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-12-15 19:02:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733096576] [2023-12-15 19:02:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:02:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:02:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:02:17,810 INFO L87 Difference]: Start difference. First operand 26115 states and 27232 transitions. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:19,778 INFO L93 Difference]: Finished difference Result 32101 states and 33408 transitions. [2023-12-15 19:02:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:02:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 658 [2023-12-15 19:02:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:19,809 INFO L225 Difference]: With dead ends: 32101 [2023-12-15 19:02:19,809 INFO L226 Difference]: Without dead ends: 32099 [2023-12-15 19:02:19,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1311 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:02:19,819 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 476 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:19,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 91 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:02:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32099 states. [2023-12-15 19:02:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32099 to 29107. [2023-12-15 19:02:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29107 states, 29106 states have (on average 1.043152614581186) internal successors, (30362), 29106 states have internal predecessors, (30362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29107 states to 29107 states and 30362 transitions. [2023-12-15 19:02:20,096 INFO L78 Accepts]: Start accepts. Automaton has 29107 states and 30362 transitions. Word has length 658 [2023-12-15 19:02:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:20,096 INFO L495 AbstractCegarLoop]: Abstraction has 29107 states and 30362 transitions. [2023-12-15 19:02:20,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 29107 states and 30362 transitions. [2023-12-15 19:02:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-12-15 19:02:20,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:20,102 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:02:20,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:02:20,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:02:20,307 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:20,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:20,308 INFO L85 PathProgramCache]: Analyzing trace with hash 749402162, now seen corresponding path program 1 times [2023-12-15 19:02:20,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:20,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515298551] [2023-12-15 19:02:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-15 19:02:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515298551] [2023-12-15 19:02:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515298551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:20,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:20,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:02:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000871983] [2023-12-15 19:02:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:02:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:02:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:02:20,932 INFO L87 Difference]: Start difference. First operand 29107 states and 30362 transitions. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:02:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:22,565 INFO L93 Difference]: Finished difference Result 63914 states and 66614 transitions. [2023-12-15 19:02:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:02:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 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 680 [2023-12-15 19:02:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:22,600 INFO L225 Difference]: With dead ends: 63914 [2023-12-15 19:02:22,600 INFO L226 Difference]: Without dead ends: 34509 [2023-12-15 19:02:22,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:02:22,618 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 379 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:22,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 563 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:02:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34509 states. [2023-12-15 19:02:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34509 to 30908. [2023-12-15 19:02:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30908 states, 30907 states have (on average 1.0412204355000485) internal successors, (32181), 30907 states have internal predecessors, (32181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 19:02:22,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:02:22,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 19:02:22,921 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (2309 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 19:02:22,927 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] [2023-12-15 19:02:22,930 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:02:22,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:02:22 BoogieIcfgContainer [2023-12-15 19:02:22,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:02:22,936 INFO L158 Benchmark]: Toolchain (without parser) took 62615.00ms. Allocated memory was 161.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 107.7MB in the beginning and 907.0MB in the end (delta: -799.3MB). Peak memory consumption was 937.2MB. Max. memory is 8.0GB. [2023-12-15 19:02:22,936 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 161.5MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:02:22,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.83ms. Allocated memory is still 161.5MB. Free memory was 107.7MB in the beginning and 82.8MB in the end (delta: 24.9MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2023-12-15 19:02:22,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 229.83ms. Allocated memory was 161.5MB in the beginning and 209.7MB in the end (delta: 48.2MB). Free memory was 82.8MB in the beginning and 156.7MB in the end (delta: -73.9MB). Peak memory consumption was 58.8MB. Max. memory is 8.0GB. [2023-12-15 19:02:22,940 INFO L158 Benchmark]: Boogie Preprocessor took 267.29ms. Allocated memory is still 209.7MB. Free memory was 156.7MB in the beginning and 145.5MB in the end (delta: 11.1MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. [2023-12-15 19:02:22,940 INFO L158 Benchmark]: RCFGBuilder took 2021.35ms. Allocated memory was 209.7MB in the beginning and 381.7MB in the end (delta: 172.0MB). Free memory was 145.5MB in the beginning and 235.7MB in the end (delta: -90.2MB). Peak memory consumption was 86.5MB. Max. memory is 8.0GB. [2023-12-15 19:02:22,940 INFO L158 Benchmark]: TraceAbstraction took 59421.97ms. Allocated memory was 381.7MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 234.7MB in the beginning and 907.0MB in the end (delta: -672.3MB). Peak memory consumption was 842.4MB. Max. memory is 8.0GB. [2023-12-15 19:02:22,945 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 19:02:22,952 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 Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 161.5MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 669.83ms. Allocated memory is still 161.5MB. Free memory was 107.7MB in the beginning and 82.8MB in the end (delta: 24.9MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 229.83ms. Allocated memory was 161.5MB in the beginning and 209.7MB in the end (delta: 48.2MB). Free memory was 82.8MB in the beginning and 156.7MB in the end (delta: -73.9MB). Peak memory consumption was 58.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 267.29ms. Allocated memory is still 209.7MB. Free memory was 156.7MB in the beginning and 145.5MB in the end (delta: 11.1MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. * RCFGBuilder took 2021.35ms. Allocated memory was 209.7MB in the beginning and 381.7MB in the end (delta: 172.0MB). Free memory was 145.5MB in the beginning and 235.7MB in the end (delta: -90.2MB). Peak memory consumption was 86.5MB. Max. memory is 8.0GB. * TraceAbstraction took 59421.97ms. Allocated memory was 381.7MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 234.7MB in the beginning and 907.0MB in the end (delta: -672.3MB). Peak memory consumption was 842.4MB. 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: 41]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 41). Cancelled while ReachableStatesComputation was computing reachable states (2309 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.4s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 28.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5521 SdHoareTripleChecker+Valid, 25.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5521 mSDsluCounter, 8390 SdHoareTripleChecker+Invalid, 21.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 692 mSDsCounter, 3663 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19043 IncrementalHoareTripleChecker+Invalid, 22706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3663 mSolverCounterUnsat, 7698 mSDtfsCounter, 19043 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3630 GetRequests, 3591 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29107occurred in iteration=19, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 18599 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 10922 NumberOfCodeBlocks, 10922 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 11554 ConstructedInterpolants, 0 QuantifiedInterpolants, 80693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3627 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 10864/11457 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