/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:04:09,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:04:09,850 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 03:04:09,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:04:09,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:04:09,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:04:09,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:04:09,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:04:09,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:04:09,870 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:04:09,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:04:09,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:04:09,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:04:09,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:04:09,871 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:04:09,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:04:09,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:04:09,872 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:04:09,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:04:09,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:04:09,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:04:09,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:04:09,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:04:09,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:04:09,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:04:09,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:04:09,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:04:09,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:04:09,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:04:09,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:04:09,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:04:09,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:04:09,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:04:09,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:04:09,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:04:09,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:04:09,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:04:09,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:04:09,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:04:09,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:04:09,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:04:09,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:04:09,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:04:09,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:04:10,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:04:10,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:04:10,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:04:10,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:04:10,040 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:04:10,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 03:04:11,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:04:11,499 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:04:11,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 03:04:11,514 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c728f252/cb2e25948376461bbf2948ec0d458d79/FLAG7a5309a1e [2023-12-20 03:04:11,528 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c728f252/cb2e25948376461bbf2948ec0d458d79 [2023-12-20 03:04:11,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:04:11,532 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:04:11,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:04:11,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:04:11,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:04:11,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:04:11" (1/1) ... [2023-12-20 03:04:11,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7bc97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:11, skipping insertion in model container [2023-12-20 03:04:11,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:04:11" (1/1) ... [2023-12-20 03:04:11,590 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:04:11,946 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2023-12-20 03:04:12,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:04:12,120 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:04:12,230 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2023-12-20 03:04:12,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:04:12,287 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:04:12,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12 WrapperNode [2023-12-20 03:04:12,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:04:12,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:04:12,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:04:12,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:04:12,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,352 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1022 [2023-12-20 03:04:12,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:04:12,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:04:12,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:04:12,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:04:12,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,428 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 03:04:12,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:04:12,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:04:12,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:04:12,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:04:12,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (1/1) ... [2023-12-20 03:04:12,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:04:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:04:12,524 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 03:04:12,536 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 03:04:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:04:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:04:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:04:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:04:12,714 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:04:12,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:04:13,317 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:04:13,358 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:04:13,358 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:04:13,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:04:13 BoogieIcfgContainer [2023-12-20 03:04:13,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:04:13,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:04:13,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:04:13,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:04:13,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:04:11" (1/3) ... [2023-12-20 03:04:13,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef186eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:04:13, skipping insertion in model container [2023-12-20 03:04:13,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:04:12" (2/3) ... [2023-12-20 03:04:13,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef186eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:04:13, skipping insertion in model container [2023-12-20 03:04:13,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:04:13" (3/3) ... [2023-12-20 03:04:13,365 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 03:04:13,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:04:13,378 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:04:13,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:04:13,435 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;@9be99b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:04:13,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:04:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 254 states have (on average 1.7283464566929134) internal successors, (439), 255 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:04:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:04:13,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:13,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:13,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:13,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1844007938, now seen corresponding path program 1 times [2023-12-20 03:04:13,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:13,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431870481] [2023-12-20 03:04:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:14,046 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 03:04:14,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:14,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431870481] [2023-12-20 03:04:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431870481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:14,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:14,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153516085] [2023-12-20 03:04:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:04:14,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:04:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:04:14,082 INFO L87 Difference]: Start difference. First operand has 256 states, 254 states have (on average 1.7283464566929134) internal successors, (439), 255 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:04:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:14,389 INFO L93 Difference]: Finished difference Result 1154 states and 1877 transitions. [2023-12-20 03:04:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:04:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-20 03:04:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:14,410 INFO L225 Difference]: With dead ends: 1154 [2023-12-20 03:04:14,410 INFO L226 Difference]: Without dead ends: 1021 [2023-12-20 03:04:14,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:04:14,417 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 3872 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:14,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3872 Valid, 3925 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:04:14,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-12-20 03:04:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 394. [2023-12-20 03:04:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.508905852417303) internal successors, (593), 393 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 03:04:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 593 transitions. [2023-12-20 03:04:14,487 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 593 transitions. Word has length 95 [2023-12-20 03:04:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:14,487 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 593 transitions. [2023-12-20 03:04:14,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:04:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 593 transitions. [2023-12-20 03:04:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 03:04:14,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:14,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:14,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:04:14,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:14,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1673283186, now seen corresponding path program 1 times [2023-12-20 03:04:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:14,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271869379] [2023-12-20 03:04:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:14,922 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 03:04:14,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:14,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271869379] [2023-12-20 03:04:14,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271869379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:14,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717622338] [2023-12-20 03:04:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:14,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:04:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:04:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:04:14,929 INFO L87 Difference]: Start difference. First operand 394 states and 593 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 03:04:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:15,149 INFO L93 Difference]: Finished difference Result 1971 states and 3069 transitions. [2023-12-20 03:04:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:04:15,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 03:04:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:15,156 INFO L225 Difference]: With dead ends: 1971 [2023-12-20 03:04:15,156 INFO L226 Difference]: Without dead ends: 1675 [2023-12-20 03:04:15,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:04:15,158 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 2103 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:15,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 2039 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:04:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-12-20 03:04:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1665. [2023-12-20 03:04:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.5540865384615385) internal successors, (2586), 1664 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states 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 03:04:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2586 transitions. [2023-12-20 03:04:15,185 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2586 transitions. Word has length 96 [2023-12-20 03:04:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:15,185 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2586 transitions. [2023-12-20 03:04:15,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 03:04:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2586 transitions. [2023-12-20 03:04:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:04:15,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:15,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:15,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:04:15,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:15,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:15,188 INFO L85 PathProgramCache]: Analyzing trace with hash 492623321, now seen corresponding path program 1 times [2023-12-20 03:04:15,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:15,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355501583] [2023-12-20 03:04:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:15,308 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 03:04:15,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:15,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355501583] [2023-12-20 03:04:15,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355501583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:15,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:15,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:04:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394763056] [2023-12-20 03:04:15,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:15,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:15,314 INFO L87 Difference]: Start difference. First operand 1665 states and 2586 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:15,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:15,571 INFO L93 Difference]: Finished difference Result 4635 states and 7276 transitions. [2023-12-20 03:04:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:04:15,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:04:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:15,580 INFO L225 Difference]: With dead ends: 4635 [2023-12-20 03:04:15,580 INFO L226 Difference]: Without dead ends: 3020 [2023-12-20 03:04:15,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:04:15,583 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1485 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:15,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 353 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:04:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2023-12-20 03:04:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 3018. [2023-12-20 03:04:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3017 states have (on average 1.5641365594961882) internal successors, (4719), 3017 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states 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 03:04:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 4719 transitions. [2023-12-20 03:04:15,632 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 4719 transitions. Word has length 97 [2023-12-20 03:04:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:15,635 INFO L495 AbstractCegarLoop]: Abstraction has 3018 states and 4719 transitions. [2023-12-20 03:04:15,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 4719 transitions. [2023-12-20 03:04:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:04:15,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:15,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:04:15,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:15,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -323483755, now seen corresponding path program 1 times [2023-12-20 03:04:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611084496] [2023-12-20 03:04:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:15,758 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 03:04:15,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611084496] [2023-12-20 03:04:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611084496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:15,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:15,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:04:15,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731480256] [2023-12-20 03:04:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:15,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:15,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:15,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:15,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:15,760 INFO L87 Difference]: Start difference. First operand 3018 states and 4719 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:15,979 INFO L93 Difference]: Finished difference Result 8181 states and 12872 transitions. [2023-12-20 03:04:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:04:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:04:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:15,996 INFO L225 Difference]: With dead ends: 8181 [2023-12-20 03:04:15,996 INFO L226 Difference]: Without dead ends: 5319 [2023-12-20 03:04:16,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:04:16,008 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1353 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:16,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 361 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:04:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2023-12-20 03:04:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5317. [2023-12-20 03:04:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 5316 states have (on average 1.5654627539503385) internal successors, (8322), 5316 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states 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 03:04:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 8322 transitions. [2023-12-20 03:04:16,111 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 8322 transitions. Word has length 97 [2023-12-20 03:04:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:16,113 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 8322 transitions. [2023-12-20 03:04:16,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 8322 transitions. [2023-12-20 03:04:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:04:16,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:16,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:16,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:04:16,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:16,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1510224292, now seen corresponding path program 1 times [2023-12-20 03:04:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651394419] [2023-12-20 03:04:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:16,222 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 03:04:16,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651394419] [2023-12-20 03:04:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651394419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:16,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:04:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815173119] [2023-12-20 03:04:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:16,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:16,224 INFO L87 Difference]: Start difference. First operand 5317 states and 8322 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:16,497 INFO L93 Difference]: Finished difference Result 14999 states and 23598 transitions. [2023-12-20 03:04:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:04:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:04:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:16,529 INFO L225 Difference]: With dead ends: 14999 [2023-12-20 03:04:16,529 INFO L226 Difference]: Without dead ends: 9879 [2023-12-20 03:04:16,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:04:16,540 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1339 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:16,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 370 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:04:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9879 states. [2023-12-20 03:04:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9879 to 9877. [2023-12-20 03:04:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9877 states, 9876 states have (on average 1.5670311867152693) internal successors, (15476), 9876 states have internal predecessors, (15476), 0 states have call successors, (0), 0 states 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 03:04:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9877 states to 9877 states and 15476 transitions. [2023-12-20 03:04:16,726 INFO L78 Accepts]: Start accepts. Automaton has 9877 states and 15476 transitions. Word has length 97 [2023-12-20 03:04:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:16,726 INFO L495 AbstractCegarLoop]: Abstraction has 9877 states and 15476 transitions. [2023-12-20 03:04:16,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 9877 states and 15476 transitions. [2023-12-20 03:04:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:04:16,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:16,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:04:16,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:16,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1479716922, now seen corresponding path program 1 times [2023-12-20 03:04:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:16,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18202364] [2023-12-20 03:04:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:16,844 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 03:04:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18202364] [2023-12-20 03:04:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18202364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:04:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525631091] [2023-12-20 03:04:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:16,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:16,845 INFO L87 Difference]: Start difference. First operand 9877 states and 15476 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:17,112 INFO L93 Difference]: Finished difference Result 28883 states and 45350 transitions. [2023-12-20 03:04:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:04:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:04:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:17,164 INFO L225 Difference]: With dead ends: 28883 [2023-12-20 03:04:17,165 INFO L226 Difference]: Without dead ends: 19125 [2023-12-20 03:04:17,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:04:17,184 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1377 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:17,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 357 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:04:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19125 states. [2023-12-20 03:04:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19125 to 19123. [2023-12-20 03:04:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19123 states, 19122 states have (on average 1.5631733082313566) internal successors, (29891), 19122 states have internal predecessors, (29891), 0 states have call successors, (0), 0 states 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 03:04:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19123 states to 19123 states and 29891 transitions. [2023-12-20 03:04:17,672 INFO L78 Accepts]: Start accepts. Automaton has 19123 states and 29891 transitions. Word has length 97 [2023-12-20 03:04:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:17,672 INFO L495 AbstractCegarLoop]: Abstraction has 19123 states and 29891 transitions. [2023-12-20 03:04:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 19123 states and 29891 transitions. [2023-12-20 03:04:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:04:17,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:17,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:04:17,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:17,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash 924420663, now seen corresponding path program 1 times [2023-12-20 03:04:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009457711] [2023-12-20 03:04:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:17,753 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 03:04:17,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009457711] [2023-12-20 03:04:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009457711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:17,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:04:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543413360] [2023-12-20 03:04:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:17,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:17,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:17,754 INFO L87 Difference]: Start difference. First operand 19123 states and 29891 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:18,245 INFO L93 Difference]: Finished difference Result 56727 states and 88773 transitions. [2023-12-20 03:04:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:04:18,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:04:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:18,329 INFO L225 Difference]: With dead ends: 56727 [2023-12-20 03:04:18,329 INFO L226 Difference]: Without dead ends: 37693 [2023-12-20 03:04:18,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:04:18,354 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1403 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:18,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 355 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:04:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37693 states. [2023-12-20 03:04:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37693 to 37691. [2023-12-20 03:04:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37691 states, 37690 states have (on average 1.5573626956752453) internal successors, (58697), 37690 states have internal predecessors, (58697), 0 states have call successors, (0), 0 states 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 03:04:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37691 states to 37691 states and 58697 transitions. [2023-12-20 03:04:19,227 INFO L78 Accepts]: Start accepts. Automaton has 37691 states and 58697 transitions. Word has length 97 [2023-12-20 03:04:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:19,227 INFO L495 AbstractCegarLoop]: Abstraction has 37691 states and 58697 transitions. [2023-12-20 03:04:19,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 37691 states and 58697 transitions. [2023-12-20 03:04:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:04:19,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:19,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:19,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:04:19,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:19,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1113732840, now seen corresponding path program 1 times [2023-12-20 03:04:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201743690] [2023-12-20 03:04:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:19,411 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 03:04:19,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201743690] [2023-12-20 03:04:19,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201743690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:19,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:19,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:04:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094429766] [2023-12-20 03:04:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:19,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:19,413 INFO L87 Difference]: Start difference. First operand 37691 states and 58697 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:20,365 INFO L93 Difference]: Finished difference Result 112443 states and 175227 transitions. [2023-12-20 03:04:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:04:20,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:04:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:20,504 INFO L225 Difference]: With dead ends: 112443 [2023-12-20 03:04:20,504 INFO L226 Difference]: Without dead ends: 74818 [2023-12-20 03:04:20,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:04:20,548 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1425 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:20,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 355 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:04:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74818 states. [2023-12-20 03:04:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74818 to 74816. [2023-12-20 03:04:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74816 states, 74815 states have (on average 1.5499699258170152) internal successors, (115961), 74815 states have internal predecessors, (115961), 0 states have call successors, (0), 0 states 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 03:04:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74816 states to 74816 states and 115961 transitions. [2023-12-20 03:04:21,793 INFO L78 Accepts]: Start accepts. Automaton has 74816 states and 115961 transitions. Word has length 97 [2023-12-20 03:04:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:21,793 INFO L495 AbstractCegarLoop]: Abstraction has 74816 states and 115961 transitions. [2023-12-20 03:04:21,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 03:04:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 74816 states and 115961 transitions. [2023-12-20 03:04:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 03:04:22,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:22,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:22,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:04:22,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:22,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1930495294, now seen corresponding path program 1 times [2023-12-20 03:04:22,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:22,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213778541] [2023-12-20 03:04:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:22,210 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 03:04:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213778541] [2023-12-20 03:04:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213778541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:22,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:04:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533318617] [2023-12-20 03:04:22,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:22,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:04:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:04:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:04:22,212 INFO L87 Difference]: Start difference. First operand 74816 states and 115961 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 03:04:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:22,785 INFO L93 Difference]: Finished difference Result 149314 states and 230714 transitions. [2023-12-20 03:04:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:04:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-20 03:04:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:23,059 INFO L225 Difference]: With dead ends: 149314 [2023-12-20 03:04:23,060 INFO L226 Difference]: Without dead ends: 149312 [2023-12-20 03:04:23,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:04:23,105 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 362 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:23,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1472 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:04:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149312 states. [2023-12-20 03:04:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149312 to 76352. [2023-12-20 03:04:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76352 states, 76351 states have (on average 1.5389058427525508) internal successors, (117497), 76351 states have internal predecessors, (117497), 0 states have call successors, (0), 0 states 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 03:04:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76352 states to 76352 states and 117497 transitions. [2023-12-20 03:04:24,769 INFO L78 Accepts]: Start accepts. Automaton has 76352 states and 117497 transitions. Word has length 98 [2023-12-20 03:04:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:24,769 INFO L495 AbstractCegarLoop]: Abstraction has 76352 states and 117497 transitions. [2023-12-20 03:04:24,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 03:04:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 76352 states and 117497 transitions. [2023-12-20 03:04:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:04:24,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:24,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:24,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:04:24,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:24,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash 629373785, now seen corresponding path program 1 times [2023-12-20 03:04:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925388174] [2023-12-20 03:04:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:25,295 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 03:04:25,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925388174] [2023-12-20 03:04:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925388174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:25,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104944302] [2023-12-20 03:04:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:25,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:04:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:25,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:04:25,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:04:25,298 INFO L87 Difference]: Start difference. First operand 76352 states and 117497 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:27,968 INFO L93 Difference]: Finished difference Result 375019 states and 572552 transitions. [2023-12-20 03:04:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 03:04:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:04:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:28,570 INFO L225 Difference]: With dead ends: 375019 [2023-12-20 03:04:28,570 INFO L226 Difference]: Without dead ends: 299768 [2023-12-20 03:04:28,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-20 03:04:28,654 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 3158 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3158 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:28,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3158 Valid, 1810 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 03:04:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299768 states. [2023-12-20 03:04:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299768 to 76424. [2023-12-20 03:04:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76424 states, 76423 states have (on average 1.538332700888476) internal successors, (117564), 76423 states have internal predecessors, (117564), 0 states have call successors, (0), 0 states 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 03:04:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76424 states to 76424 states and 117564 transitions. [2023-12-20 03:04:31,763 INFO L78 Accepts]: Start accepts. Automaton has 76424 states and 117564 transitions. Word has length 99 [2023-12-20 03:04:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:31,763 INFO L495 AbstractCegarLoop]: Abstraction has 76424 states and 117564 transitions. [2023-12-20 03:04:31,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 76424 states and 117564 transitions. [2023-12-20 03:04:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:04:31,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:31,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:31,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:04:31,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:31,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -130610215, now seen corresponding path program 1 times [2023-12-20 03:04:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877638283] [2023-12-20 03:04:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:32,305 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 03:04:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877638283] [2023-12-20 03:04:32,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877638283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228943580] [2023-12-20 03:04:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:32,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:04:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:32,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:04:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:04:32,307 INFO L87 Difference]: Start difference. First operand 76424 states and 117564 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:34,298 INFO L93 Difference]: Finished difference Result 227585 states and 346822 transitions. [2023-12-20 03:04:34,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 03:04:34,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:04:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:34,670 INFO L225 Difference]: With dead ends: 227585 [2023-12-20 03:04:34,671 INFO L226 Difference]: Without dead ends: 206463 [2023-12-20 03:04:34,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2023-12-20 03:04:34,735 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2994 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:34,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 1832 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:04:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206463 states. [2023-12-20 03:04:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206463 to 77297. [2023-12-20 03:04:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77297 states, 77296 states have (on average 1.5376733595528875) internal successors, (118856), 77296 states have internal predecessors, (118856), 0 states have call successors, (0), 0 states 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 03:04:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77297 states to 77297 states and 118856 transitions. [2023-12-20 03:04:36,840 INFO L78 Accepts]: Start accepts. Automaton has 77297 states and 118856 transitions. Word has length 99 [2023-12-20 03:04:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:36,840 INFO L495 AbstractCegarLoop]: Abstraction has 77297 states and 118856 transitions. [2023-12-20 03:04:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 77297 states and 118856 transitions. [2023-12-20 03:04:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:04:36,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:36,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:36,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:04:36,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:36,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -678806535, now seen corresponding path program 1 times [2023-12-20 03:04:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605080907] [2023-12-20 03:04:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:37,384 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 03:04:37,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:37,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605080907] [2023-12-20 03:04:37,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605080907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:37,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:37,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:37,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691467996] [2023-12-20 03:04:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:37,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:04:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:04:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:04:37,385 INFO L87 Difference]: Start difference. First operand 77297 states and 118856 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:39,121 INFO L93 Difference]: Finished difference Result 191510 states and 292795 transitions. [2023-12-20 03:04:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 03:04:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:04:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:39,442 INFO L225 Difference]: With dead ends: 191510 [2023-12-20 03:04:39,443 INFO L226 Difference]: Without dead ends: 183867 [2023-12-20 03:04:39,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-20 03:04:39,480 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2418 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:39,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 1969 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:04:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183867 states. [2023-12-20 03:04:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183867 to 77297. [2023-12-20 03:04:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77297 states, 77296 states have (on average 1.5376216104326226) internal successors, (118852), 77296 states have internal predecessors, (118852), 0 states have call successors, (0), 0 states 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 03:04:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77297 states to 77297 states and 118852 transitions. [2023-12-20 03:04:41,083 INFO L78 Accepts]: Start accepts. Automaton has 77297 states and 118852 transitions. Word has length 99 [2023-12-20 03:04:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:41,083 INFO L495 AbstractCegarLoop]: Abstraction has 77297 states and 118852 transitions. [2023-12-20 03:04:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 77297 states and 118852 transitions. [2023-12-20 03:04:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:04:41,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:41,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:41,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:04:41,095 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:41,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash 831099833, now seen corresponding path program 1 times [2023-12-20 03:04:41,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:41,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126949950] [2023-12-20 03:04:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:41,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:41,526 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 03:04:41,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:41,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126949950] [2023-12-20 03:04:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126949950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:41,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837178570] [2023-12-20 03:04:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:04:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:04:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:04:41,528 INFO L87 Difference]: Start difference. First operand 77297 states and 118852 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:43,551 INFO L93 Difference]: Finished difference Result 290129 states and 443141 transitions. [2023-12-20 03:04:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 03:04:43,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:04:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:44,008 INFO L225 Difference]: With dead ends: 290129 [2023-12-20 03:04:44,008 INFO L226 Difference]: Without dead ends: 255513 [2023-12-20 03:04:44,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-20 03:04:44,084 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2697 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:44,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 1805 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:04:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255513 states. [2023-12-20 03:04:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255513 to 78272. [2023-12-20 03:04:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78272 states, 78271 states have (on average 1.5355240127250196) internal successors, (120187), 78271 states have internal predecessors, (120187), 0 states have call successors, (0), 0 states 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 03:04:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78272 states to 78272 states and 120187 transitions. [2023-12-20 03:04:46,295 INFO L78 Accepts]: Start accepts. Automaton has 78272 states and 120187 transitions. Word has length 99 [2023-12-20 03:04:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:46,296 INFO L495 AbstractCegarLoop]: Abstraction has 78272 states and 120187 transitions. [2023-12-20 03:04:46,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 78272 states and 120187 transitions. [2023-12-20 03:04:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:04:46,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:46,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:46,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:04:46,329 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:46,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash -514731111, now seen corresponding path program 1 times [2023-12-20 03:04:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:46,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754449457] [2023-12-20 03:04:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:46,527 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 03:04:46,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754449457] [2023-12-20 03:04:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754449457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:46,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:46,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043851716] [2023-12-20 03:04:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:46,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:04:46,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:46,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:04:46,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:04:46,529 INFO L87 Difference]: Start difference. First operand 78272 states and 120187 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:48,959 INFO L93 Difference]: Finished difference Result 360711 states and 550279 transitions. [2023-12-20 03:04:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 03:04:48,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:04:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:49,547 INFO L225 Difference]: With dead ends: 360711 [2023-12-20 03:04:49,547 INFO L226 Difference]: Without dead ends: 313168 [2023-12-20 03:04:49,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:04:49,649 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2304 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:49,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 2421 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 03:04:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313168 states. [2023-12-20 03:04:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313168 to 79367. [2023-12-20 03:04:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79367 states, 79366 states have (on average 1.5326714210115162) internal successors, (121642), 79366 states have internal predecessors, (121642), 0 states have call successors, (0), 0 states 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 03:04:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79367 states to 79367 states and 121642 transitions. [2023-12-20 03:04:53,090 INFO L78 Accepts]: Start accepts. Automaton has 79367 states and 121642 transitions. Word has length 99 [2023-12-20 03:04:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:04:53,090 INFO L495 AbstractCegarLoop]: Abstraction has 79367 states and 121642 transitions. [2023-12-20 03:04:53,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 79367 states and 121642 transitions. [2023-12-20 03:04:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:04:53,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:04:53,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:04:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:04:53,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:04:53,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:04:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1734331257, now seen corresponding path program 1 times [2023-12-20 03:04:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:04:53,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663308655] [2023-12-20 03:04:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:04:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:04:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:04:53,323 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 03:04:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:04:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663308655] [2023-12-20 03:04:53,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663308655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:04:53,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:04:53,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:04:53,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781943886] [2023-12-20 03:04:53,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:04:53,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:04:53,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:04:53,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:04:53,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:04:53,325 INFO L87 Difference]: Start difference. First operand 79367 states and 121642 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:04:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:04:56,552 INFO L93 Difference]: Finished difference Result 384868 states and 586228 transitions. [2023-12-20 03:04:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 03:04:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:04:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:04:57,175 INFO L225 Difference]: With dead ends: 384868 [2023-12-20 03:04:57,175 INFO L226 Difference]: Without dead ends: 325112 [2023-12-20 03:04:57,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:04:57,284 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2059 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:04:57,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 3384 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 03:04:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325112 states. [2023-12-20 03:05:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325112 to 80656. [2023-12-20 03:05:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 80655 states have (on average 1.528287148967826) internal successors, (123264), 80655 states have internal predecessors, (123264), 0 states have call successors, (0), 0 states 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 03:05:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 123264 transitions. [2023-12-20 03:05:00,511 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 123264 transitions. Word has length 99 [2023-12-20 03:05:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:00,511 INFO L495 AbstractCegarLoop]: Abstraction has 80656 states and 123264 transitions. [2023-12-20 03:05:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:05:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 123264 transitions. [2023-12-20 03:05:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:00,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:00,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:05:00,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:00,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1462720807, now seen corresponding path program 1 times [2023-12-20 03:05:00,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:00,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274725582] [2023-12-20 03:05:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:00,986 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 03:05:00,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274725582] [2023-12-20 03:05:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274725582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:00,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:00,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:05:00,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179452902] [2023-12-20 03:05:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:05:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:05:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:05:00,988 INFO L87 Difference]: Start difference. First operand 80656 states and 123264 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:01,553 INFO L93 Difference]: Finished difference Result 221844 states and 339826 transitions. [2023-12-20 03:05:01,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:05:01,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:02,117 INFO L225 Difference]: With dead ends: 221844 [2023-12-20 03:05:02,117 INFO L226 Difference]: Without dead ends: 147346 [2023-12-20 03:05:02,170 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 03:05:02,171 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 247 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:02,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 879 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:05:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147346 states. [2023-12-20 03:05:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147346 to 146608. [2023-12-20 03:05:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146608 states, 146607 states have (on average 1.52014569563527) internal successors, (222864), 146607 states have internal predecessors, (222864), 0 states have call successors, (0), 0 states 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 03:05:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146608 states to 146608 states and 222864 transitions. [2023-12-20 03:05:04,012 INFO L78 Accepts]: Start accepts. Automaton has 146608 states and 222864 transitions. Word has length 100 [2023-12-20 03:05:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:04,012 INFO L495 AbstractCegarLoop]: Abstraction has 146608 states and 222864 transitions. [2023-12-20 03:05:04,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 146608 states and 222864 transitions. [2023-12-20 03:05:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:04,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:04,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:04,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:05:04,025 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:04,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1569828370, now seen corresponding path program 1 times [2023-12-20 03:05:04,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656993018] [2023-12-20 03:05:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:04,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:04,098 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 03:05:04,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:04,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656993018] [2023-12-20 03:05:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656993018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:04,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:05:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017038658] [2023-12-20 03:05:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:05:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:05:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:05:04,100 INFO L87 Difference]: Start difference. First operand 146608 states and 222864 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:05,692 INFO L93 Difference]: Finished difference Result 321312 states and 488862 transitions. [2023-12-20 03:05:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:05:05,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:06,273 INFO L225 Difference]: With dead ends: 321312 [2023-12-20 03:05:06,273 INFO L226 Difference]: Without dead ends: 196390 [2023-12-20 03:05:06,409 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 03:05:06,411 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 251 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:06,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 686 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:05:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196390 states. [2023-12-20 03:05:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196390 to 195316. [2023-12-20 03:05:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195316 states, 195315 states have (on average 1.5059724035532345) internal successors, (294139), 195315 states have internal predecessors, (294139), 0 states have call successors, (0), 0 states 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 03:05:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195316 states to 195316 states and 294139 transitions. [2023-12-20 03:05:09,315 INFO L78 Accepts]: Start accepts. Automaton has 195316 states and 294139 transitions. Word has length 100 [2023-12-20 03:05:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:09,315 INFO L495 AbstractCegarLoop]: Abstraction has 195316 states and 294139 transitions. [2023-12-20 03:05:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:09,328 INFO L276 IsEmpty]: Start isEmpty. Operand 195316 states and 294139 transitions. [2023-12-20 03:05:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:09,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:09,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:09,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:05:09,372 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:09,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1642130214, now seen corresponding path program 1 times [2023-12-20 03:05:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84933317] [2023-12-20 03:05:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:09,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:09,441 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 03:05:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:09,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84933317] [2023-12-20 03:05:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84933317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:05:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768659650] [2023-12-20 03:05:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:05:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:05:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:05:09,443 INFO L87 Difference]: Start difference. First operand 195316 states and 294139 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:10,584 INFO L93 Difference]: Finished difference Result 251590 states and 378585 transitions. [2023-12-20 03:05:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:05:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:11,133 INFO L225 Difference]: With dead ends: 251590 [2023-12-20 03:05:11,133 INFO L226 Difference]: Without dead ends: 211468 [2023-12-20 03:05:11,272 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 03:05:11,273 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 210 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:11,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 691 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:05:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211468 states. [2023-12-20 03:05:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211468 to 192746. [2023-12-20 03:05:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192746 states, 192745 states have (on average 1.488572985032037) internal successors, (286915), 192745 states have internal predecessors, (286915), 0 states have call successors, (0), 0 states 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 03:05:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192746 states to 192746 states and 286915 transitions. [2023-12-20 03:05:14,280 INFO L78 Accepts]: Start accepts. Automaton has 192746 states and 286915 transitions. Word has length 100 [2023-12-20 03:05:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:14,280 INFO L495 AbstractCegarLoop]: Abstraction has 192746 states and 286915 transitions. [2023-12-20 03:05:14,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 192746 states and 286915 transitions. [2023-12-20 03:05:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:14,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:14,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:14,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:05:14,295 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:14,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash -118113359, now seen corresponding path program 1 times [2023-12-20 03:05:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:14,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767127861] [2023-12-20 03:05:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:14,369 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 03:05:14,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:14,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767127861] [2023-12-20 03:05:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767127861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:14,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:05:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650166791] [2023-12-20 03:05:14,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:14,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:05:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:05:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:05:14,372 INFO L87 Difference]: Start difference. First operand 192746 states and 286915 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:16,295 INFO L93 Difference]: Finished difference Result 501923 states and 748459 transitions. [2023-12-20 03:05:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:05:16,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:17,184 INFO L225 Difference]: With dead ends: 501923 [2023-12-20 03:05:17,184 INFO L226 Difference]: Without dead ends: 328163 [2023-12-20 03:05:17,272 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 03:05:17,272 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 255 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:17,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 718 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:05:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328163 states. [2023-12-20 03:05:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328163 to 327681. [2023-12-20 03:05:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327681 states, 327680 states have (on average 1.4823455810546875) internal successors, (485735), 327680 states have internal predecessors, (485735), 0 states have call successors, (0), 0 states 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 03:05:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327681 states to 327681 states and 485735 transitions. [2023-12-20 03:05:21,876 INFO L78 Accepts]: Start accepts. Automaton has 327681 states and 485735 transitions. Word has length 100 [2023-12-20 03:05:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:21,877 INFO L495 AbstractCegarLoop]: Abstraction has 327681 states and 485735 transitions. [2023-12-20 03:05:21,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 327681 states and 485735 transitions. [2023-12-20 03:05:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:21,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:21,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:05:21,939 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:21,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1807200719, now seen corresponding path program 1 times [2023-12-20 03:05:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964674658] [2023-12-20 03:05:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:05:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964674658] [2023-12-20 03:05:22,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964674658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:22,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:22,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:05:22,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909092401] [2023-12-20 03:05:22,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:05:22,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:05:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:05:22,011 INFO L87 Difference]: Start difference. First operand 327681 states and 485735 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:24,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:24,166 INFO L93 Difference]: Finished difference Result 510465 states and 757493 transitions. [2023-12-20 03:05:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:05:24,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:24,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:25,045 INFO L225 Difference]: With dead ends: 510465 [2023-12-20 03:05:25,045 INFO L226 Difference]: Without dead ends: 369719 [2023-12-20 03:05:25,177 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 03:05:25,178 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 216 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:25,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 720 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:05:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369719 states. [2023-12-20 03:05:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369719 to 366677. [2023-12-20 03:05:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366677 states, 366676 states have (on average 1.4640800052362304) internal successors, (536843), 366676 states have internal predecessors, (536843), 0 states have call successors, (0), 0 states 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 03:05:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366677 states to 366677 states and 536843 transitions. [2023-12-20 03:05:30,508 INFO L78 Accepts]: Start accepts. Automaton has 366677 states and 536843 transitions. Word has length 100 [2023-12-20 03:05:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:30,508 INFO L495 AbstractCegarLoop]: Abstraction has 366677 states and 536843 transitions. [2023-12-20 03:05:30,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 366677 states and 536843 transitions. [2023-12-20 03:05:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:30,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:30,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:30,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:05:30,526 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:30,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash -605215566, now seen corresponding path program 1 times [2023-12-20 03:05:30,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:30,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855924197] [2023-12-20 03:05:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:30,574 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 03:05:30,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855924197] [2023-12-20 03:05:30,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855924197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:30,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:05:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973926448] [2023-12-20 03:05:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:30,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:05:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:05:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:05:30,576 INFO L87 Difference]: Start difference. First operand 366677 states and 536843 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:33,302 INFO L93 Difference]: Finished difference Result 683473 states and 1000809 transitions. [2023-12-20 03:05:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:05:33,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:34,668 INFO L225 Difference]: With dead ends: 683473 [2023-12-20 03:05:34,668 INFO L226 Difference]: Without dead ends: 436823 [2023-12-20 03:05:34,798 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 03:05:34,799 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 226 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:34,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:05:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436823 states. [2023-12-20 03:05:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436823 to 433493. [2023-12-20 03:05:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433493 states, 433492 states have (on average 1.4427878715178135) internal successors, (625437), 433492 states have internal predecessors, (625437), 0 states have call successors, (0), 0 states 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 03:05:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433493 states to 433493 states and 625437 transitions. [2023-12-20 03:05:41,576 INFO L78 Accepts]: Start accepts. Automaton has 433493 states and 625437 transitions. Word has length 100 [2023-12-20 03:05:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:41,576 INFO L495 AbstractCegarLoop]: Abstraction has 433493 states and 625437 transitions. [2023-12-20 03:05:41,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 433493 states and 625437 transitions. [2023-12-20 03:05:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:05:41,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:41,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:41,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:05:41,595 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:41,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1540466351, now seen corresponding path program 1 times [2023-12-20 03:05:41,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:41,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824065524] [2023-12-20 03:05:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:41,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:41,636 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 03:05:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824065524] [2023-12-20 03:05:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824065524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:41,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:05:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932512055] [2023-12-20 03:05:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:05:41,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:05:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:05:41,638 INFO L87 Difference]: Start difference. First operand 433493 states and 625437 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:45,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:05:45,234 INFO L93 Difference]: Finished difference Result 910247 states and 1310543 transitions. [2023-12-20 03:05:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:05:45,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-20 03:05:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:05:46,830 INFO L225 Difference]: With dead ends: 910247 [2023-12-20 03:05:46,831 INFO L226 Difference]: Without dead ends: 535427 [2023-12-20 03:05:47,046 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 03:05:47,048 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 236 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:05:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 676 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:05:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535427 states. [2023-12-20 03:05:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535427 to 532081. [2023-12-20 03:05:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532081 states, 532080 states have (on average 1.417636445647271) internal successors, (754296), 532080 states have internal predecessors, (754296), 0 states have call successors, (0), 0 states 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 03:05:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532081 states to 532081 states and 754296 transitions. [2023-12-20 03:05:55,410 INFO L78 Accepts]: Start accepts. Automaton has 532081 states and 754296 transitions. Word has length 100 [2023-12-20 03:05:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:05:55,411 INFO L495 AbstractCegarLoop]: Abstraction has 532081 states and 754296 transitions. [2023-12-20 03:05:55,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:05:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 532081 states and 754296 transitions. [2023-12-20 03:05:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:05:55,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:05:55,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:05:55,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:05:55,429 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:05:55,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:05:55,429 INFO L85 PathProgramCache]: Analyzing trace with hash -618136975, now seen corresponding path program 1 times [2023-12-20 03:05:55,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:05:55,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387167574] [2023-12-20 03:05:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:05:55,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:05:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:05:55,527 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 03:05:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:05:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387167574] [2023-12-20 03:05:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387167574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:05:55,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:05:55,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:05:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701036945] [2023-12-20 03:05:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:05:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:05:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:05:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:05:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:05:55,529 INFO L87 Difference]: Start difference. First operand 532081 states and 754296 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:06:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:06:01,158 INFO L93 Difference]: Finished difference Result 1486411 states and 2123387 transitions. [2023-12-20 03:06:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:06:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-20 03:06:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:06:04,324 INFO L225 Difference]: With dead ends: 1486411 [2023-12-20 03:06:04,325 INFO L226 Difference]: Without dead ends: 1284703 [2023-12-20 03:06:05,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:06:05,032 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2957 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2957 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:06:05,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2957 Valid, 2368 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:06:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284703 states. [2023-12-20 03:06:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284703 to 718576. [2023-12-20 03:06:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718576 states, 718575 states have (on average 1.4185185958320288) internal successors, (1019312), 718575 states have internal predecessors, (1019312), 0 states have call successors, (0), 0 states 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 03:06:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718576 states to 718576 states and 1019312 transitions. [2023-12-20 03:06:19,965 INFO L78 Accepts]: Start accepts. Automaton has 718576 states and 1019312 transitions. Word has length 101 [2023-12-20 03:06:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:06:19,965 INFO L495 AbstractCegarLoop]: Abstraction has 718576 states and 1019312 transitions. [2023-12-20 03:06:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:06:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 718576 states and 1019312 transitions. [2023-12-20 03:06:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:06:19,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:06:19,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:06:19,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 03:06:19,983 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:06:19,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:06:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1050803689, now seen corresponding path program 1 times [2023-12-20 03:06:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:06:19,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096417295] [2023-12-20 03:06:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:06:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:06:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:06:20,072 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 03:06:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:06:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096417295] [2023-12-20 03:06:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096417295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:06:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:06:20,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:06:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362300746] [2023-12-20 03:06:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:06:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:06:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:06:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:06:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:06:20,074 INFO L87 Difference]: Start difference. First operand 718576 states and 1019312 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:06:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:06:26,975 INFO L93 Difference]: Finished difference Result 1587179 states and 2265336 transitions. [2023-12-20 03:06:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:06:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-20 03:06:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:06:31,146 INFO L225 Difference]: With dead ends: 1587179 [2023-12-20 03:06:31,146 INFO L226 Difference]: Without dead ends: 1471482 [2023-12-20 03:06:31,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:06:31,691 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 3290 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:06:31,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3290 Valid, 2366 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:06:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471482 states. [2023-12-20 03:06:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471482 to 809007. [2023-12-20 03:06:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809007 states, 809006 states have (on average 1.419297261083354) internal successors, (1148220), 809006 states have internal predecessors, (1148220), 0 states have call successors, (0), 0 states 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 03:06:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809007 states to 809007 states and 1148220 transitions. [2023-12-20 03:06:51,617 INFO L78 Accepts]: Start accepts. Automaton has 809007 states and 1148220 transitions. Word has length 101 [2023-12-20 03:06:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:06:51,617 INFO L495 AbstractCegarLoop]: Abstraction has 809007 states and 1148220 transitions. [2023-12-20 03:06:51,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:06:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 809007 states and 1148220 transitions. [2023-12-20 03:06:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:06:51,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:06:51,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:06:51,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:06:51,636 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:06:51,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:06:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1138128382, now seen corresponding path program 1 times [2023-12-20 03:06:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:06:51,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121934424] [2023-12-20 03:06:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:06:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:06:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:06:51,847 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 03:06:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:06:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121934424] [2023-12-20 03:06:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121934424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:06:51,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:06:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:06:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987295023] [2023-12-20 03:06:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:06:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:06:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:06:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:06:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:06:51,849 INFO L87 Difference]: Start difference. First operand 809007 states and 1148220 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:06:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:06:59,265 INFO L93 Difference]: Finished difference Result 1573706 states and 2244573 transitions. [2023-12-20 03:06:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:06:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-20 03:06:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:04,377 INFO L225 Difference]: With dead ends: 1573706 [2023-12-20 03:07:04,378 INFO L226 Difference]: Without dead ends: 1522269 [2023-12-20 03:07:05,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:07:05,028 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 3091 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:05,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3091 Valid, 2407 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:07:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522269 states. [2023-12-20 03:07:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522269 to 859794. [2023-12-20 03:07:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859794 states, 859793 states have (on average 1.419463754647921) internal successors, (1220445), 859793 states have internal predecessors, (1220445), 0 states have call successors, (0), 0 states 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 03:07:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859794 states to 859794 states and 1220445 transitions. [2023-12-20 03:07:26,243 INFO L78 Accepts]: Start accepts. Automaton has 859794 states and 1220445 transitions. Word has length 101 [2023-12-20 03:07:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:26,243 INFO L495 AbstractCegarLoop]: Abstraction has 859794 states and 1220445 transitions. [2023-12-20 03:07:26,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:07:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 859794 states and 1220445 transitions. [2023-12-20 03:07:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:07:26,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:26,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:07:26,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 03:07:26,263 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:26,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash -201238574, now seen corresponding path program 1 times [2023-12-20 03:07:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905340972] [2023-12-20 03:07:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:26,474 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 03:07:26,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905340972] [2023-12-20 03:07:26,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905340972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:26,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:26,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:07:26,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800806924] [2023-12-20 03:07:26,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:26,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:07:26,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:07:26,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:07:26,476 INFO L87 Difference]: Start difference. First operand 859794 states and 1220445 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:07:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:34,797 INFO L93 Difference]: Finished difference Result 1813993 states and 2588494 transitions. [2023-12-20 03:07:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:07:34,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-20 03:07:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:40,159 INFO L225 Difference]: With dead ends: 1813993 [2023-12-20 03:07:40,160 INFO L226 Difference]: Without dead ends: 1635764 [2023-12-20 03:07:40,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:07:40,894 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2773 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:40,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2773 Valid, 2649 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:07:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635764 states. [2023-12-20 03:07:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635764 to 966454. [2023-12-20 03:07:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966454 states, 966453 states have (on average 1.420683675253737) internal successors, (1373024), 966453 states have internal predecessors, (1373024), 0 states have call successors, (0), 0 states 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 03:08:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966454 states to 966454 states and 1373024 transitions. [2023-12-20 03:08:02,414 INFO L78 Accepts]: Start accepts. Automaton has 966454 states and 1373024 transitions. Word has length 101 [2023-12-20 03:08:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:02,414 INFO L495 AbstractCegarLoop]: Abstraction has 966454 states and 1373024 transitions. [2023-12-20 03:08:02,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 03:08:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 966454 states and 1373024 transitions. [2023-12-20 03:08:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:08:02,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:02,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:02,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 03:08:02,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:02,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:02,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1321219737, now seen corresponding path program 1 times [2023-12-20 03:08:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666792908] [2023-12-20 03:08:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:02,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:02,533 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 03:08:02,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:02,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666792908] [2023-12-20 03:08:02,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666792908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:02,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:08:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512496578] [2023-12-20 03:08:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:02,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:08:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:08:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:08:02,534 INFO L87 Difference]: Start difference. First operand 966454 states and 1373024 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)