/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:02:27,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:02:27,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:02:27,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:02:27,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:02:27,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:02:27,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:02:27,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:02:27,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:02:27,146 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:02:27,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:02:27,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:02:27,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:02:27,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:02:27,147 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:02:27,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:02:27,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:02:27,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:02:27,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:02:27,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:02:27,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:02:27,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:02:27,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:02:27,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:02:27,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:02:27,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:02:27,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:02:27,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:02:27,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:02:27,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:02:27,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:02:27,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:02:27,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:02:27,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:02:27,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:02:27,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:02:27,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:02:27,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:02:27,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:02:27,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:02:27,153 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:02:27,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:02:27,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:02:27,154 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:02:27,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:02:27,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:02:27,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:02:27,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:02:27,338 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:02:27,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:02:28,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:02:28,520 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:02:28,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:02:28,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1928de6/aad8cecf12a64664a83be7d55f358614/FLAGc638678b7 [2023-12-20 01:02:28,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1928de6/aad8cecf12a64664a83be7d55f358614 [2023-12-20 01:02:28,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:02:28,569 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:02:28,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:02:28,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:02:28,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:02:28,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c53e092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28, skipping insertion in model container [2023-12-20 01:02:28,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:02:28,801 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2023-12-20 01:02:28,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:02:28,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:02:28,869 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2023-12-20 01:02:28,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:02:28,883 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:02:28,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28 WrapperNode [2023-12-20 01:02:28,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:02:28,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:02:28,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:02:28,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:02:28,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,959 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 308 [2023-12-20 01:02:28,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:02:28,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:02:28,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:02:28,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:02:28,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,991 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:02:28,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:28,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:29,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:29,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:29,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:29,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:29,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:02:29,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:02:29,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:02:29,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:02:29,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (1/1) ... [2023-12-20 01:02:29,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:02:29,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:29,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:02:29,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:02:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:02:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:02:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:02:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:02:29,125 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:02:29,126 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:02:29,408 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:02:29,432 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:02:29,432 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:02:29,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:02:29 BoogieIcfgContainer [2023-12-20 01:02:29,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:02:29,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:02:29,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:02:29,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:02:29,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:02:28" (1/3) ... [2023-12-20 01:02:29,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2465e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:02:29, skipping insertion in model container [2023-12-20 01:02:29,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:28" (2/3) ... [2023-12-20 01:02:29,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2465e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:02:29, skipping insertion in model container [2023-12-20 01:02:29,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:02:29" (3/3) ... [2023-12-20 01:02:29,439 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:02:29,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:02:29,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:02:29,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:02:29,487 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;@73d4a6bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:02:29,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:02:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:02:29,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:29,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:29,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:29,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash -436537251, now seen corresponding path program 1 times [2023-12-20 01:02:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899758992] [2023-12-20 01:02:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899758992] [2023-12-20 01:02:29,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899758992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:29,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:29,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:02:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131035575] [2023-12-20 01:02:29,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:02:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:02:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:02:29,658 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:29,693 INFO L93 Difference]: Finished difference Result 133 states and 227 transitions. [2023-12-20 01:02:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:02:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-20 01:02:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:29,703 INFO L225 Difference]: With dead ends: 133 [2023-12-20 01:02:29,703 INFO L226 Difference]: Without dead ends: 79 [2023-12-20 01:02:29,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:02:29,708 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:29,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-20 01:02:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-20 01:02:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2023-12-20 01:02:29,740 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 26 [2023-12-20 01:02:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:29,740 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2023-12-20 01:02:29,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2023-12-20 01:02:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:02:29,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:29,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:29,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:02:29,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:29,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2052991711, now seen corresponding path program 1 times [2023-12-20 01:02:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451005625] [2023-12-20 01:02:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451005625] [2023-12-20 01:02:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451005625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:29,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:02:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283015048] [2023-12-20 01:02:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:02:29,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:02:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:02:29,968 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:30,011 INFO L93 Difference]: Finished difference Result 133 states and 221 transitions. [2023-12-20 01:02:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:02:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-20 01:02:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:30,012 INFO L225 Difference]: With dead ends: 133 [2023-12-20 01:02:30,013 INFO L226 Difference]: Without dead ends: 79 [2023-12-20 01:02:30,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:02:30,014 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:30,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-20 01:02:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-20 01:02:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2023-12-20 01:02:30,020 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 26 [2023-12-20 01:02:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:30,021 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2023-12-20 01:02:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2023-12-20 01:02:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:02:30,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:30,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:30,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:02:30,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:30,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:30,023 INFO L85 PathProgramCache]: Analyzing trace with hash 794604760, now seen corresponding path program 1 times [2023-12-20 01:02:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652639303] [2023-12-20 01:02:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:30,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:30,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652639303] [2023-12-20 01:02:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652639303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:30,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238587027] [2023-12-20 01:02:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:30,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:30,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:30,150 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:30,178 INFO L93 Difference]: Finished difference Result 173 states and 263 transitions. [2023-12-20 01:02:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:30,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 01:02:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:30,181 INFO L225 Difference]: With dead ends: 173 [2023-12-20 01:02:30,181 INFO L226 Difference]: Without dead ends: 122 [2023-12-20 01:02:30,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:30,182 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 59 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:30,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 209 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-20 01:02:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2023-12-20 01:02:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.495798319327731) internal successors, (178), 119 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2023-12-20 01:02:30,188 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 49 [2023-12-20 01:02:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:30,189 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2023-12-20 01:02:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2023-12-20 01:02:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:02:30,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:30,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:30,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:02:30,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:30,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1181399799, now seen corresponding path program 1 times [2023-12-20 01:02:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:30,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455297730] [2023-12-20 01:02:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:30,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:30,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455297730] [2023-12-20 01:02:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455297730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:30,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:30,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:02:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360370367] [2023-12-20 01:02:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:30,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:02:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:02:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:30,343 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:30,432 INFO L93 Difference]: Finished difference Result 580 states and 928 transitions. [2023-12-20 01:02:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:02:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 01:02:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:30,436 INFO L225 Difference]: With dead ends: 580 [2023-12-20 01:02:30,437 INFO L226 Difference]: Without dead ends: 488 [2023-12-20 01:02:30,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:02:30,445 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 653 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:30,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 590 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-20 01:02:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 210. [2023-12-20 01:02:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.5454545454545454) internal successors, (323), 209 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions. [2023-12-20 01:02:30,470 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 49 [2023-12-20 01:02:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:30,471 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 323 transitions. [2023-12-20 01:02:30,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions. [2023-12-20 01:02:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 01:02:30,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:30,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:30,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:02:30,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:30,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2044342744, now seen corresponding path program 1 times [2023-12-20 01:02:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304152401] [2023-12-20 01:02:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:30,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304152401] [2023-12-20 01:02:30,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304152401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:30,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:30,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:02:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170522321] [2023-12-20 01:02:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:30,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:02:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:02:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:30,690 INFO L87 Difference]: Start difference. First operand 210 states and 323 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:30,715 INFO L93 Difference]: Finished difference Result 224 states and 340 transitions. [2023-12-20 01:02:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:02:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 01:02:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:30,717 INFO L225 Difference]: With dead ends: 224 [2023-12-20 01:02:30,717 INFO L226 Difference]: Without dead ends: 222 [2023-12-20 01:02:30,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:30,718 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 2 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:30,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 521 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-20 01:02:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2023-12-20 01:02:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5253456221198156) internal successors, (331), 217 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 331 transitions. [2023-12-20 01:02:30,759 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 331 transitions. Word has length 50 [2023-12-20 01:02:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:30,759 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 331 transitions. [2023-12-20 01:02:30,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 331 transitions. [2023-12-20 01:02:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:02:30,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:30,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:30,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:02:30,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:30,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1050914879, now seen corresponding path program 1 times [2023-12-20 01:02:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:30,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463625912] [2023-12-20 01:02:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:30,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:30,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463625912] [2023-12-20 01:02:30,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463625912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:30,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:30,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420713647] [2023-12-20 01:02:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:30,840 INFO L87 Difference]: Start difference. First operand 218 states and 331 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:30,857 INFO L93 Difference]: Finished difference Result 570 states and 889 transitions. [2023-12-20 01:02:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 01:02:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:30,860 INFO L225 Difference]: With dead ends: 570 [2023-12-20 01:02:30,860 INFO L226 Difference]: Without dead ends: 380 [2023-12-20 01:02:30,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:30,863 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 51 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:30,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-20 01:02:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2023-12-20 01:02:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.5361930294906165) internal successors, (573), 373 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 573 transitions. [2023-12-20 01:02:30,885 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 573 transitions. Word has length 51 [2023-12-20 01:02:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:30,886 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 573 transitions. [2023-12-20 01:02:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 573 transitions. [2023-12-20 01:02:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:02:30,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:30,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:30,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:02:30,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:30,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2005837455, now seen corresponding path program 1 times [2023-12-20 01:02:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924457007] [2023-12-20 01:02:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924457007] [2023-12-20 01:02:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924457007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:30,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:30,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69636635] [2023-12-20 01:02:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:30,941 INFO L87 Difference]: Start difference. First operand 374 states and 573 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:30,965 INFO L93 Difference]: Finished difference Result 1002 states and 1551 transitions. [2023-12-20 01:02:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 01:02:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:30,968 INFO L225 Difference]: With dead ends: 1002 [2023-12-20 01:02:30,968 INFO L226 Difference]: Without dead ends: 656 [2023-12-20 01:02:30,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:30,970 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 63 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:30,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 223 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-20 01:02:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2023-12-20 01:02:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.5267993874425727) internal successors, (997), 653 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 997 transitions. [2023-12-20 01:02:30,989 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 997 transitions. Word has length 52 [2023-12-20 01:02:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:30,989 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 997 transitions. [2023-12-20 01:02:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 997 transitions. [2023-12-20 01:02:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:02:30,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:30,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:30,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:02:30,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:30,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1823510447, now seen corresponding path program 1 times [2023-12-20 01:02:30,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:30,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229226687] [2023-12-20 01:02:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:30,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229226687] [2023-12-20 01:02:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229226687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:31,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594353241] [2023-12-20 01:02:31,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:31,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:31,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:31,035 INFO L87 Difference]: Start difference. First operand 654 states and 997 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:31,067 INFO L93 Difference]: Finished difference Result 1778 states and 2711 transitions. [2023-12-20 01:02:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:31,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 01:02:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:31,072 INFO L225 Difference]: With dead ends: 1778 [2023-12-20 01:02:31,072 INFO L226 Difference]: Without dead ends: 1152 [2023-12-20 01:02:31,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:31,074 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:31,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 236 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-12-20 01:02:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1150. [2023-12-20 01:02:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.5013054830287207) internal successors, (1725), 1149 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1725 transitions. [2023-12-20 01:02:31,103 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1725 transitions. Word has length 52 [2023-12-20 01:02:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:31,104 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1725 transitions. [2023-12-20 01:02:31,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1725 transitions. [2023-12-20 01:02:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 01:02:31,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:31,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:02:31,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:31,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash 484386469, now seen corresponding path program 1 times [2023-12-20 01:02:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:31,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655377233] [2023-12-20 01:02:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:31,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:31,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:31,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655377233] [2023-12-20 01:02:31,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655377233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:31,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:31,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:31,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956666138] [2023-12-20 01:02:31,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:31,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:31,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:31,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:31,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:31,155 INFO L87 Difference]: Start difference. First operand 1150 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:31,189 INFO L93 Difference]: Finished difference Result 2245 states and 3395 transitions. [2023-12-20 01:02:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 01:02:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:31,194 INFO L225 Difference]: With dead ends: 2245 [2023-12-20 01:02:31,194 INFO L226 Difference]: Without dead ends: 1618 [2023-12-20 01:02:31,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:31,196 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 68 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:31,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 245 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-12-20 01:02:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1616. [2023-12-20 01:02:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.4904024767801858) internal successors, (2407), 1615 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2407 transitions. [2023-12-20 01:02:31,236 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2407 transitions. Word has length 53 [2023-12-20 01:02:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:31,236 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2407 transitions. [2023-12-20 01:02:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2407 transitions. [2023-12-20 01:02:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:02:31,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:31,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:31,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:02:31,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:31,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash -573145706, now seen corresponding path program 1 times [2023-12-20 01:02:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:31,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222862109] [2023-12-20 01:02:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:02:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222862109] [2023-12-20 01:02:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222862109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:31,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:02:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878990154] [2023-12-20 01:02:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:31,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:02:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:02:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:31,323 INFO L87 Difference]: Start difference. First operand 1616 states and 2407 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:31,425 INFO L93 Difference]: Finished difference Result 4554 states and 6888 transitions. [2023-12-20 01:02:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:02:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 74 [2023-12-20 01:02:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:31,435 INFO L225 Difference]: With dead ends: 4554 [2023-12-20 01:02:31,436 INFO L226 Difference]: Without dead ends: 3752 [2023-12-20 01:02:31,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:02:31,437 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 549 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:31,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 570 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2023-12-20 01:02:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 2400. [2023-12-20 01:02:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2399 states have (on average 1.491871613172155) internal successors, (3579), 2399 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3579 transitions. [2023-12-20 01:02:31,491 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3579 transitions. Word has length 74 [2023-12-20 01:02:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:31,491 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 3579 transitions. [2023-12-20 01:02:31,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3579 transitions. [2023-12-20 01:02:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:02:31,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:31,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:02:31,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:31,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1433669481, now seen corresponding path program 1 times [2023-12-20 01:02:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:31,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802572533] [2023-12-20 01:02:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:02:31,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:31,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802572533] [2023-12-20 01:02:31,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802572533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:31,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:31,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:02:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108960018] [2023-12-20 01:02:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:31,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:02:31,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:02:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:31,585 INFO L87 Difference]: Start difference. First operand 2400 states and 3579 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:31,709 INFO L93 Difference]: Finished difference Result 5338 states and 8060 transitions. [2023-12-20 01:02:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:02:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 74 [2023-12-20 01:02:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:31,721 INFO L225 Difference]: With dead ends: 5338 [2023-12-20 01:02:31,721 INFO L226 Difference]: Without dead ends: 4536 [2023-12-20 01:02:31,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:02:31,722 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 491 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:31,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 632 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2023-12-20 01:02:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3184. [2023-12-20 01:02:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 1.4926170279610431) internal successors, (4751), 3183 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4751 transitions. [2023-12-20 01:02:31,798 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4751 transitions. Word has length 74 [2023-12-20 01:02:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:31,798 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 4751 transitions. [2023-12-20 01:02:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4751 transitions. [2023-12-20 01:02:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:02:31,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:31,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:31,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:02:31,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:31,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1615996489, now seen corresponding path program 1 times [2023-12-20 01:02:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832944907] [2023-12-20 01:02:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:02:31,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:31,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832944907] [2023-12-20 01:02:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832944907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:31,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:02:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386784806] [2023-12-20 01:02:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:02:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:02:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:31,879 INFO L87 Difference]: Start difference. First operand 3184 states and 4751 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:32,063 INFO L93 Difference]: Finished difference Result 6122 states and 9232 transitions. [2023-12-20 01:02:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:02:32,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 74 [2023-12-20 01:02:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:32,083 INFO L225 Difference]: With dead ends: 6122 [2023-12-20 01:02:32,083 INFO L226 Difference]: Without dead ends: 5320 [2023-12-20 01:02:32,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:02:32,086 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 531 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:32,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 626 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2023-12-20 01:02:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 3968. [2023-12-20 01:02:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.4930678094277792) internal successors, (5923), 3967 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5923 transitions. [2023-12-20 01:02:32,195 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5923 transitions. Word has length 74 [2023-12-20 01:02:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:32,195 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5923 transitions. [2023-12-20 01:02:32,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5923 transitions. [2023-12-20 01:02:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 01:02:32,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:32,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:32,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:02:32,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:32,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2003246849, now seen corresponding path program 1 times [2023-12-20 01:02:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:32,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851702952] [2023-12-20 01:02:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:32,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:32,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:32,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851702952] [2023-12-20 01:02:32,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851702952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:32,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:32,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:32,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121166946] [2023-12-20 01:02:32,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:32,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:32,254 INFO L87 Difference]: Start difference. First operand 3968 states and 5923 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-12-20 01:02:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:32,326 INFO L93 Difference]: Finished difference Result 7908 states and 11817 transitions. [2023-12-20 01:02:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:32,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 [2023-12-20 01:02:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:32,336 INFO L225 Difference]: With dead ends: 7908 [2023-12-20 01:02:32,336 INFO L226 Difference]: Without dead ends: 3970 [2023-12-20 01:02:32,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:32,340 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 55 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:32,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 236 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2023-12-20 01:02:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3968. [2023-12-20 01:02:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.4779430299974792) internal successors, (5863), 3967 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5863 transitions. [2023-12-20 01:02:32,445 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5863 transitions. Word has length 75 [2023-12-20 01:02:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:32,445 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5863 transitions. [2023-12-20 01:02:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-12-20 01:02:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5863 transitions. [2023-12-20 01:02:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 01:02:32,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:32,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:32,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:02:32,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:32,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 120108448, now seen corresponding path program 1 times [2023-12-20 01:02:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340589031] [2023-12-20 01:02:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:32,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:32,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340589031] [2023-12-20 01:02:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340589031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:32,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897340440] [2023-12-20 01:02:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:32,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:32,501 INFO L87 Difference]: Start difference. First operand 3968 states and 5863 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-12-20 01:02:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:32,546 INFO L93 Difference]: Finished difference Result 5940 states and 8781 transitions. [2023-12-20 01:02:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 [2023-12-20 01:02:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:32,551 INFO L225 Difference]: With dead ends: 5940 [2023-12-20 01:02:32,552 INFO L226 Difference]: Without dead ends: 2002 [2023-12-20 01:02:32,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:32,555 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 49 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:32,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2023-12-20 01:02:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 2000. [2023-12-20 01:02:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 1.4592296148074038) internal successors, (2917), 1999 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2917 transitions. [2023-12-20 01:02:32,599 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2917 transitions. Word has length 75 [2023-12-20 01:02:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:32,599 INFO L495 AbstractCegarLoop]: Abstraction has 2000 states and 2917 transitions. [2023-12-20 01:02:32,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-12-20 01:02:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2917 transitions. [2023-12-20 01:02:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 01:02:32,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:32,600 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:32,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:02:32,601 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:32,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash 626393793, now seen corresponding path program 1 times [2023-12-20 01:02:32,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:32,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416206652] [2023-12-20 01:02:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416206652] [2023-12-20 01:02:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416206652] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104637403] [2023-12-20 01:02:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:33,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:33,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:33,960 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) [2023-12-20 01:02:33,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:02:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:34,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 01:02:34,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:02:34,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:02:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104637403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:34,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-20 01:02:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315864120] [2023-12-20 01:02:34,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:02:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:02:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:02:34,450 INFO L87 Difference]: Start difference. First operand 2000 states and 2917 transitions. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:37,635 INFO L93 Difference]: Finished difference Result 18122 states and 25986 transitions. [2023-12-20 01:02:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 01:02:37,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 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 [2023-12-20 01:02:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:37,664 INFO L225 Difference]: With dead ends: 18122 [2023-12-20 01:02:37,664 INFO L226 Difference]: Without dead ends: 16760 [2023-12-20 01:02:37,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=965, Invalid=4585, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 01:02:37,671 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3662 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:37,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 1271 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:02:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2023-12-20 01:02:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 13244. [2023-12-20 01:02:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 13243 states have (on average 1.4253567922676131) internal successors, (18876), 13243 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 18876 transitions. [2023-12-20 01:02:37,990 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 18876 transitions. Word has length 75 [2023-12-20 01:02:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:37,991 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 18876 transitions. [2023-12-20 01:02:37,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 18876 transitions. [2023-12-20 01:02:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 01:02:37,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:37,992 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:38,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:38,198 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,SelfDestructingSolverStorable14 [2023-12-20 01:02:38,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:38,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2112085428, now seen corresponding path program 1 times [2023-12-20 01:02:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:38,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154761202] [2023-12-20 01:02:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:38,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:02:38,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:38,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154761202] [2023-12-20 01:02:38,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154761202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:38,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:38,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:02:38,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962622433] [2023-12-20 01:02:38,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:38,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:02:38,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:02:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:02:38,283 INFO L87 Difference]: Start difference. First operand 13244 states and 18876 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2023-12-20 01:02:38,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:38,595 INFO L93 Difference]: Finished difference Result 22834 states and 32786 transitions. [2023-12-20 01:02:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:02:38,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 76 [2023-12-20 01:02:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:38,636 INFO L225 Difference]: With dead ends: 22834 [2023-12-20 01:02:38,637 INFO L226 Difference]: Without dead ends: 20648 [2023-12-20 01:02:38,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:02:38,646 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 454 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:38,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 627 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20648 states. [2023-12-20 01:02:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20648 to 15512. [2023-12-20 01:02:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15512 states, 15511 states have (on average 1.4241506027980144) internal successors, (22090), 15511 states have internal predecessors, (22090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15512 states to 15512 states and 22090 transitions. [2023-12-20 01:02:39,114 INFO L78 Accepts]: Start accepts. Automaton has 15512 states and 22090 transitions. Word has length 76 [2023-12-20 01:02:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:39,114 INFO L495 AbstractCegarLoop]: Abstraction has 15512 states and 22090 transitions. [2023-12-20 01:02:39,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2023-12-20 01:02:39,114 INFO L276 IsEmpty]: Start isEmpty. Operand 15512 states and 22090 transitions. [2023-12-20 01:02:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:02:39,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:39,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:39,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:02:39,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:39,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash 80183665, now seen corresponding path program 1 times [2023-12-20 01:02:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:39,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597052818] [2023-12-20 01:02:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597052818] [2023-12-20 01:02:39,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597052818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:39,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:39,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867433540] [2023-12-20 01:02:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:39,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:39,169 INFO L87 Difference]: Start difference. First operand 15512 states and 22090 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:39,403 INFO L93 Difference]: Finished difference Result 22752 states and 32272 transitions. [2023-12-20 01:02:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:39,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 01:02:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:39,416 INFO L225 Difference]: With dead ends: 22752 [2023-12-20 01:02:39,416 INFO L226 Difference]: Without dead ends: 7270 [2023-12-20 01:02:39,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:39,426 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 37 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:39,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 204 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7270 states. [2023-12-20 01:02:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7270 to 7268. [2023-12-20 01:02:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 1.3853034264483282) internal successors, (10067), 7267 states have internal predecessors, (10067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 10067 transitions. [2023-12-20 01:02:39,581 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 10067 transitions. Word has length 77 [2023-12-20 01:02:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:39,582 INFO L495 AbstractCegarLoop]: Abstraction has 7268 states and 10067 transitions. [2023-12-20 01:02:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 10067 transitions. [2023-12-20 01:02:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:02:39,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:39,585 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:02:39,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:39,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash 464528149, now seen corresponding path program 1 times [2023-12-20 01:02:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782393609] [2023-12-20 01:02:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:41,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:41,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782393609] [2023-12-20 01:02:41,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782393609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:41,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674775175] [2023-12-20 01:02:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:41,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:41,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:41,746 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) [2023-12-20 01:02:41,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:02:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:41,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:02:41,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:42,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:43,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674775175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:43,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-12-20 01:02:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44925865] [2023-12-20 01:02:43,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 01:02:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 01:02:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:02:43,770 INFO L87 Difference]: Start difference. First operand 7268 states and 10067 transitions. Second operand has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:44,925 INFO L93 Difference]: Finished difference Result 29885 states and 40879 transitions. [2023-12-20 01:02:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 01:02:44,926 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-20 01:02:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:44,956 INFO L225 Difference]: With dead ends: 29885 [2023-12-20 01:02:44,956 INFO L226 Difference]: Without dead ends: 22664 [2023-12-20 01:02:44,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 01:02:44,970 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1648 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:44,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 851 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 01:02:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22664 states. [2023-12-20 01:02:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22664 to 16791. [2023-12-20 01:02:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16791 states, 16790 states have (on average 1.3699225729600952) internal successors, (23001), 16790 states have internal predecessors, (23001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 23001 transitions. [2023-12-20 01:02:45,388 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 23001 transitions. Word has length 79 [2023-12-20 01:02:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:45,388 INFO L495 AbstractCegarLoop]: Abstraction has 16791 states and 23001 transitions. [2023-12-20 01:02:45,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 23001 transitions. [2023-12-20 01:02:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:02:45,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:45,390 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:45,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:45,595 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,SelfDestructingSolverStorable17 [2023-12-20 01:02:45,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:45,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash 851323188, now seen corresponding path program 1 times [2023-12-20 01:02:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:45,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575531492] [2023-12-20 01:02:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575531492] [2023-12-20 01:02:45,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575531492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:45,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880358113] [2023-12-20 01:02:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:45,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:45,652 INFO L87 Difference]: Start difference. First operand 16791 states and 23001 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:45,790 INFO L93 Difference]: Finished difference Result 25099 states and 34339 transitions. [2023-12-20 01:02:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:45,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-20 01:02:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:45,803 INFO L225 Difference]: With dead ends: 25099 [2023-12-20 01:02:45,804 INFO L226 Difference]: Without dead ends: 9714 [2023-12-20 01:02:45,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:45,817 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:45,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 179 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2023-12-20 01:02:45,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9712. [2023-12-20 01:02:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 9711 states have (on average 1.341674389867161) internal successors, (13029), 9711 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 13029 transitions. [2023-12-20 01:02:45,982 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 13029 transitions. Word has length 79 [2023-12-20 01:02:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:45,982 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 13029 transitions. [2023-12-20 01:02:45,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 13029 transitions. [2023-12-20 01:02:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:02:45,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:45,984 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:45,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:02:45,984 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:45,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash -159971565, now seen corresponding path program 1 times [2023-12-20 01:02:45,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:45,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267947274] [2023-12-20 01:02:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:45,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267947274] [2023-12-20 01:02:46,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267947274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:46,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851913469] [2023-12-20 01:02:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:46,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:46,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:46,788 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) [2023-12-20 01:02:46,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:02:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:46,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:02:46,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:47,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851913469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:47,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:47,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-20 01:02:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838046701] [2023-12-20 01:02:47,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:47,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:02:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:02:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:02:47,969 INFO L87 Difference]: Start difference. First operand 9712 states and 13029 transitions. Second operand has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:54,490 INFO L93 Difference]: Finished difference Result 85299 states and 113453 transitions. [2023-12-20 01:02:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-20 01:02:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 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 79 [2023-12-20 01:02:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:54,601 INFO L225 Difference]: With dead ends: 85299 [2023-12-20 01:02:54,601 INFO L226 Difference]: Without dead ends: 75619 [2023-12-20 01:02:54,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6296 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2701, Invalid=15389, Unknown=0, NotChecked=0, Total=18090 [2023-12-20 01:02:54,628 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 3662 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:54,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 1737 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:02:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75619 states. [2023-12-20 01:02:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75619 to 53383. [2023-12-20 01:02:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53383 states, 53382 states have (on average 1.3388220748566932) internal successors, (71469), 53382 states have internal predecessors, (71469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53383 states to 53383 states and 71469 transitions. [2023-12-20 01:02:56,274 INFO L78 Accepts]: Start accepts. Automaton has 53383 states and 71469 transitions. Word has length 79 [2023-12-20 01:02:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:56,274 INFO L495 AbstractCegarLoop]: Abstraction has 53383 states and 71469 transitions. [2023-12-20 01:02:56,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 53383 states and 71469 transitions. [2023-12-20 01:02:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:02:56,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:56,277 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:56,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:56,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:56,485 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:56,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1808943462, now seen corresponding path program 1 times [2023-12-20 01:02:56,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:56,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691426154] [2023-12-20 01:02:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:56,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:56,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691426154] [2023-12-20 01:02:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691426154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:56,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739562601] [2023-12-20 01:02:56,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:56,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:56,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:56,517 INFO L87 Difference]: Start difference. First operand 53383 states and 71469 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:57,979 INFO L93 Difference]: Finished difference Result 112424 states and 150508 transitions. [2023-12-20 01:02:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:57,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 01:02:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:58,063 INFO L225 Difference]: With dead ends: 112424 [2023-12-20 01:02:58,063 INFO L226 Difference]: Without dead ends: 62559 [2023-12-20 01:02:58,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:58,095 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 54 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:58,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62559 states. [2023-12-20 01:02:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62559 to 62557. [2023-12-20 01:02:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62557 states, 62556 states have (on average 1.323965726708869) internal successors, (82822), 62556 states have internal predecessors, (82822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62557 states to 62557 states and 82822 transitions. [2023-12-20 01:02:59,652 INFO L78 Accepts]: Start accepts. Automaton has 62557 states and 82822 transitions. Word has length 80 [2023-12-20 01:02:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:59,652 INFO L495 AbstractCegarLoop]: Abstraction has 62557 states and 82822 transitions. [2023-12-20 01:02:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 62557 states and 82822 transitions. [2023-12-20 01:02:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:02:59,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:59,655 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:59,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:02:59,655 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:59,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2142364890, now seen corresponding path program 1 times [2023-12-20 01:02:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:59,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694351951] [2023-12-20 01:02:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:59,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:59,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:59,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694351951] [2023-12-20 01:02:59,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694351951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:59,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:59,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:59,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348665530] [2023-12-20 01:02:59,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:59,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:59,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:59,686 INFO L87 Difference]: Start difference. First operand 62557 states and 82822 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:01,824 INFO L93 Difference]: Finished difference Result 170622 states and 224472 transitions. [2023-12-20 01:03:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:01,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 01:03:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:01,959 INFO L225 Difference]: With dead ends: 170622 [2023-12-20 01:03:01,959 INFO L226 Difference]: Without dead ends: 110390 [2023-12-20 01:03:01,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:01,999 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 48 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:01,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110390 states. [2023-12-20 01:03:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110390 to 110388. [2023-12-20 01:03:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110388 states, 110387 states have (on average 1.2936034134454237) internal successors, (142797), 110387 states have internal predecessors, (142797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110388 states to 110388 states and 142797 transitions. [2023-12-20 01:03:05,133 INFO L78 Accepts]: Start accepts. Automaton has 110388 states and 142797 transitions. Word has length 80 [2023-12-20 01:03:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:05,134 INFO L495 AbstractCegarLoop]: Abstraction has 110388 states and 142797 transitions. [2023-12-20 01:03:05,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 110388 states and 142797 transitions. [2023-12-20 01:03:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:03:05,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:05,140 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:03:05,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:03:05,140 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:05,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1813865286, now seen corresponding path program 1 times [2023-12-20 01:03:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:05,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719654418] [2023-12-20 01:03:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:05,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:05,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719654418] [2023-12-20 01:03:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719654418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:05,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:05,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037332834] [2023-12-20 01:03:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:05,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:05,167 INFO L87 Difference]: Start difference. First operand 110388 states and 142797 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:08,515 INFO L93 Difference]: Finished difference Result 273161 states and 351586 transitions. [2023-12-20 01:03:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:08,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 01:03:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:08,705 INFO L225 Difference]: With dead ends: 273161 [2023-12-20 01:03:08,706 INFO L226 Difference]: Without dead ends: 165517 [2023-12-20 01:03:08,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:08,742 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:08,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 226 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165517 states. [2023-12-20 01:03:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165517 to 165515. [2023-12-20 01:03:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165515 states, 165514 states have (on average 1.2642374663170488) internal successors, (209249), 165514 states have internal predecessors, (209249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165515 states to 165515 states and 209249 transitions. [2023-12-20 01:03:13,452 INFO L78 Accepts]: Start accepts. Automaton has 165515 states and 209249 transitions. Word has length 80 [2023-12-20 01:03:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:13,452 INFO L495 AbstractCegarLoop]: Abstraction has 165515 states and 209249 transitions. [2023-12-20 01:03:13,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 165515 states and 209249 transitions. [2023-12-20 01:03:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:03:13,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:13,461 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:03:13,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:03:13,461 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:13,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1524817978, now seen corresponding path program 1 times [2023-12-20 01:03:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:13,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624991323] [2023-12-20 01:03:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624991323] [2023-12-20 01:03:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624991323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:13,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:13,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698605064] [2023-12-20 01:03:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:13,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:13,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:13,493 INFO L87 Difference]: Start difference. First operand 165515 states and 209249 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:18,040 INFO L93 Difference]: Finished difference Result 358105 states and 450836 transitions. [2023-12-20 01:03:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 01:03:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:18,523 INFO L225 Difference]: With dead ends: 358105 [2023-12-20 01:03:18,523 INFO L226 Difference]: Without dead ends: 208582 [2023-12-20 01:03:18,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:18,585 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:18,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208582 states. [2023-12-20 01:03:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208582 to 208580. [2023-12-20 01:03:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208580 states, 208579 states have (on average 1.2372194708000326) internal successors, (258058), 208579 states have internal predecessors, (258058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208580 states to 208580 states and 258058 transitions. [2023-12-20 01:03:24,629 INFO L78 Accepts]: Start accepts. Automaton has 208580 states and 258058 transitions. Word has length 80 [2023-12-20 01:03:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:24,629 INFO L495 AbstractCegarLoop]: Abstraction has 208580 states and 258058 transitions. [2023-12-20 01:03:24,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 208580 states and 258058 transitions. [2023-12-20 01:03:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:03:24,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:24,653 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:03:24,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:03:24,654 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:24,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1026117690, now seen corresponding path program 1 times [2023-12-20 01:03:24,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:24,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751728340] [2023-12-20 01:03:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751728340] [2023-12-20 01:03:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751728340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435636828] [2023-12-20 01:03:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:25,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:25,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:25,039 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) [2023-12-20 01:03:25,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:03:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:25,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:03:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:25,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:26,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435636828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:26,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:26,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-20 01:03:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270906806] [2023-12-20 01:03:26,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:26,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 01:03:26,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:26,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 01:03:26,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-20 01:03:26,354 INFO L87 Difference]: Start difference. First operand 208580 states and 258058 transitions. Second operand has 27 states, 27 states have (on average 8.0) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:31,098 INFO L93 Difference]: Finished difference Result 416731 states and 516238 transitions. [2023-12-20 01:03:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 01:03:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 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 80 [2023-12-20 01:03:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:31,372 INFO L225 Difference]: With dead ends: 416731 [2023-12-20 01:03:31,372 INFO L226 Difference]: Without dead ends: 210702 [2023-12-20 01:03:31,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=446, Invalid=1446, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 01:03:31,438 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1100 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:31,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 792 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:03:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210702 states. [2023-12-20 01:03:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210702 to 135886. [2023-12-20 01:03:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135886 states, 135885 states have (on average 1.2381499061706591) internal successors, (168246), 135885 states have internal predecessors, (168246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135886 states to 135886 states and 168246 transitions. [2023-12-20 01:03:35,998 INFO L78 Accepts]: Start accepts. Automaton has 135886 states and 168246 transitions. Word has length 80 [2023-12-20 01:03:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:35,998 INFO L495 AbstractCegarLoop]: Abstraction has 135886 states and 168246 transitions. [2023-12-20 01:03:35,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 135886 states and 168246 transitions. [2023-12-20 01:03:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:03:36,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:36,023 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:03:36,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:36,237 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:36,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -954116486, now seen corresponding path program 1 times [2023-12-20 01:03:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707900754] [2023-12-20 01:03:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:36,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707900754] [2023-12-20 01:03:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707900754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:36,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025131596] [2023-12-20 01:03:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:36,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:36,266 INFO L87 Difference]: Start difference. First operand 135886 states and 168246 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:39,218 INFO L93 Difference]: Finished difference Result 212498 states and 262028 transitions. [2023-12-20 01:03:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 01:03:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:39,402 INFO L225 Difference]: With dead ends: 212498 [2023-12-20 01:03:39,402 INFO L226 Difference]: Without dead ends: 132368 [2023-12-20 01:03:39,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:39,463 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:39,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 276 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132368 states. [2023-12-20 01:03:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132368 to 128003. [2023-12-20 01:03:43,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128003 states, 128002 states have (on average 1.2214496648489868) internal successors, (156348), 128002 states have internal predecessors, (156348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128003 states to 128003 states and 156348 transitions. [2023-12-20 01:03:43,436 INFO L78 Accepts]: Start accepts. Automaton has 128003 states and 156348 transitions. Word has length 80 [2023-12-20 01:03:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:43,437 INFO L495 AbstractCegarLoop]: Abstraction has 128003 states and 156348 transitions. [2023-12-20 01:03:43,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 128003 states and 156348 transitions. [2023-12-20 01:03:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:03:43,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:43,450 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:03:43,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 01:03:43,450 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:43,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1593060840, now seen corresponding path program 1 times [2023-12-20 01:03:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275287376] [2023-12-20 01:03:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:43,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275287376] [2023-12-20 01:03:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275287376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854041145] [2023-12-20 01:03:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:43,491 INFO L87 Difference]: Start difference. First operand 128003 states and 156348 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)