/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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:15:40,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:15:41,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:15:41,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:15:41,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:15:41,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:15:41,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:15:41,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:15:41,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:15:41,041 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:15:41,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:15:41,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:15:41,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:15:41,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:15:41,043 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:15:41,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:15:41,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:15:41,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:15:41,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:15:41,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:15:41,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:15:41,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:15:41,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:15:41,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:15:41,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:15:41,045 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:15:41,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:15:41,045 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:15:41,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:15:41,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:15:41,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:15:41,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:15:41,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:15:41,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:15:41,048 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:15:41,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:15:41,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:15:41,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:15:41,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:15:41,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:15:41,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:15:41,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:15:41,252 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:15:41,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-12-18 23:15:42,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:15:42,650 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:15:42,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-12-18 23:15:42,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e881fb3/1baf295b4ddc44bf95ec8a42e812161b/FLAG5b68f43b0 [2023-12-18 23:15:42,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e881fb3/1baf295b4ddc44bf95ec8a42e812161b [2023-12-18 23:15:42,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:15:42,698 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:15:42,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:15:42,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:15:42,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:15:42,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:15:42" (1/1) ... [2023-12-18 23:15:42,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@968b6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:42, skipping insertion in model container [2023-12-18 23:15:42,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:15:42" (1/1) ... [2023-12-18 23:15:42,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:15:43,139 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2023-12-18 23:15:43,184 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2023-12-18 23:15:44,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:15:44,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:15:44,139 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2023-12-18 23:15:44,149 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2023-12-18 23:15:44,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:15:44,449 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:15:44,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44 WrapperNode [2023-12-18 23:15:44,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:15:44,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:15:44,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:15:44,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:15:44,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:44,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:44,872 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4980 [2023-12-18 23:15:44,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:15:44,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:15:44,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:15:44,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:15:44,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:44,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:44,946 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,046 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]. [2023-12-18 23:15:45,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:15:45,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:15:45,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:15:45,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:15:45,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:45,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:15:45,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:15:45,346 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) [2023-12-18 23:15:45,364 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 [2023-12-18 23:15:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:15:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:15:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:15:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:15:45,453 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:15:45,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:15:48,319 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:15:48,367 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:15:48,367 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:15:48,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:15:48 BoogieIcfgContainer [2023-12-18 23:15:48,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:15:48,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:15:48,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:15:48,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:15:48,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:15:42" (1/3) ... [2023-12-18 23:15:48,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:15:48, skipping insertion in model container [2023-12-18 23:15:48,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44" (2/3) ... [2023-12-18 23:15:48,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:15:48, skipping insertion in model container [2023-12-18 23:15:48,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:15:48" (3/3) ... [2023-12-18 23:15:48,374 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-12-18 23:15:48,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:15:48,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:15:48,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:15:48,436 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;@2c3f815a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:15:48,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:15:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:15:48,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:48,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:48,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:48,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1841439881, now seen corresponding path program 1 times [2023-12-18 23:15:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020064932] [2023-12-18 23:15:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:48,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:48,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:48,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020064932] [2023-12-18 23:15:48,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020064932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:48,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:48,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:15:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042640264] [2023-12-18 23:15:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:48,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:15:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:48,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:15:48,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:15:48,595 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:48,659 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-18 23:15:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:15:48,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-18 23:15:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:48,673 INFO L225 Difference]: With dead ends: 1594 [2023-12-18 23:15:48,673 INFO L226 Difference]: Without dead ends: 803 [2023-12-18 23:15:48,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:15:48,680 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:48,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-18 23:15:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-18 23:15:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-18 23:15:48,731 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-18 23:15:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:48,731 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-18 23:15:48,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-18 23:15:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:15:48,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:48,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:48,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:15:48,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:48,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1254633867, now seen corresponding path program 1 times [2023-12-18 23:15:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776197775] [2023-12-18 23:15:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776197775] [2023-12-18 23:15:48,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776197775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:48,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:15:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452037930] [2023-12-18 23:15:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:15:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:15:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:15:48,821 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:48,873 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-18 23:15:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:15:48,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-18 23:15:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:48,876 INFO L225 Difference]: With dead ends: 864 [2023-12-18 23:15:48,876 INFO L226 Difference]: Without dead ends: 832 [2023-12-18 23:15:48,877 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 [2023-12-18 23:15:48,877 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:48,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-18 23:15:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-18 23:15:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-18 23:15:48,891 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-18 23:15:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:48,892 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-18 23:15:48,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:48,892 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-18 23:15:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-18 23:15:48,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:48,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:48,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:15:48,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:48,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash 479405031, now seen corresponding path program 1 times [2023-12-18 23:15:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:48,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239460111] [2023-12-18 23:15:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:48,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239460111] [2023-12-18 23:15:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239460111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:48,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:15:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978155818] [2023-12-18 23:15:48,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:48,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:48,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:48,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:48,950 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:51,732 INFO L93 Difference]: Finished difference Result 2307 states and 4378 transitions. [2023-12-18 23:15:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:51,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-12-18 23:15:51,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:51,738 INFO L225 Difference]: With dead ends: 2307 [2023-12-18 23:15:51,738 INFO L226 Difference]: Without dead ends: 1554 [2023-12-18 23:15:51,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:51,740 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 906 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:51,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 178 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 23:15:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-12-18 23:15:51,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2023-12-18 23:15:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1552 states have (on average 1.8324742268041236) internal successors, (2844), 1553 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2844 transitions. [2023-12-18 23:15:51,775 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2844 transitions. Word has length 29 [2023-12-18 23:15:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:51,775 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2844 transitions. [2023-12-18 23:15:51,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2844 transitions. [2023-12-18 23:15:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 23:15:51,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:51,788 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] [2023-12-18 23:15:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:15:51,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:51,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1671742577, now seen corresponding path program 1 times [2023-12-18 23:15:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:51,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445850476] [2023-12-18 23:15:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:51,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:51,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445850476] [2023-12-18 23:15:51,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445850476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:51,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:51,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:51,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123503894] [2023-12-18 23:15:51,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:51,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:51,863 INFO L87 Difference]: Start difference. First operand 1554 states and 2844 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,009 INFO L93 Difference]: Finished difference Result 1728 states and 3120 transitions. [2023-12-18 23:15:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 23:15:52,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-18 23:15:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,014 INFO L225 Difference]: With dead ends: 1728 [2023-12-18 23:15:52,014 INFO L226 Difference]: Without dead ends: 1699 [2023-12-18 23:15:52,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:15:52,016 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:15:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-18 23:15:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1581. [2023-12-18 23:15:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8283723875870805) internal successors, (2887), 1580 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2887 transitions. [2023-12-18 23:15:52,040 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2887 transitions. Word has length 32 [2023-12-18 23:15:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,041 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2887 transitions. [2023-12-18 23:15:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2887 transitions. [2023-12-18 23:15:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:15:52,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,042 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] [2023-12-18 23:15:52,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:15:52,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash -349538145, now seen corresponding path program 1 times [2023-12-18 23:15:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474384762] [2023-12-18 23:15:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474384762] [2023-12-18 23:15:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474384762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716849845] [2023-12-18 23:15:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,112 INFO L87 Difference]: Start difference. First operand 1581 states and 2887 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,139 INFO L93 Difference]: Finished difference Result 1682 states and 3046 transitions. [2023-12-18 23:15:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-18 23:15:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,145 INFO L225 Difference]: With dead ends: 1682 [2023-12-18 23:15:52,145 INFO L226 Difference]: Without dead ends: 1626 [2023-12-18 23:15:52,147 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 [2023-12-18 23:15:52,148 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2023-12-18 23:15:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1624. [2023-12-18 23:15:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8205918618988903) internal successors, (2953), 1623 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2953 transitions. [2023-12-18 23:15:52,176 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2953 transitions. Word has length 34 [2023-12-18 23:15:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,176 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2953 transitions. [2023-12-18 23:15:52,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2953 transitions. [2023-12-18 23:15:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:15:52,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,180 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] [2023-12-18 23:15:52,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:15:52,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash -347393193, now seen corresponding path program 1 times [2023-12-18 23:15:52,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343241083] [2023-12-18 23:15:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343241083] [2023-12-18 23:15:52,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343241083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904303182] [2023-12-18 23:15:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:52,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:52,329 INFO L87 Difference]: Start difference. First operand 1624 states and 2953 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,387 INFO L93 Difference]: Finished difference Result 1725 states and 3109 transitions. [2023-12-18 23:15:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-18 23:15:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,394 INFO L225 Difference]: With dead ends: 1725 [2023-12-18 23:15:52,394 INFO L226 Difference]: Without dead ends: 1626 [2023-12-18 23:15:52,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:15:52,398 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2023-12-18 23:15:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1624. [2023-12-18 23:15:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8193588162762022) internal successors, (2951), 1623 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2951 transitions. [2023-12-18 23:15:52,437 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2951 transitions. Word has length 34 [2023-12-18 23:15:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,437 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2951 transitions. [2023-12-18 23:15:52,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2951 transitions. [2023-12-18 23:15:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-18 23:15:52,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,438 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] [2023-12-18 23:15:52,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:15:52,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1987358074, now seen corresponding path program 1 times [2023-12-18 23:15:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677060873] [2023-12-18 23:15:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677060873] [2023-12-18 23:15:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677060873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:15:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701187951] [2023-12-18 23:15:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:15:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:15:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:15:52,533 INFO L87 Difference]: Start difference. First operand 1624 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,565 INFO L93 Difference]: Finished difference Result 1632 states and 2960 transitions. [2023-12-18 23:15:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:15:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-18 23:15:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,570 INFO L225 Difference]: With dead ends: 1632 [2023-12-18 23:15:52,570 INFO L226 Difference]: Without dead ends: 1630 [2023-12-18 23:15:52,571 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 [2023-12-18 23:15:52,571 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-18 23:15:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1628. [2023-12-18 23:15:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1626 states have (on average 1.8167281672816729) internal successors, (2954), 1627 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2954 transitions. [2023-12-18 23:15:52,598 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2954 transitions. Word has length 35 [2023-12-18 23:15:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,598 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 2954 transitions. [2023-12-18 23:15:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2954 transitions. [2023-12-18 23:15:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:15:52,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,599 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] [2023-12-18 23:15:52,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:15:52,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash 177157591, now seen corresponding path program 1 times [2023-12-18 23:15:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112205263] [2023-12-18 23:15:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112205263] [2023-12-18 23:15:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112205263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403905185] [2023-12-18 23:15:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,627 INFO L87 Difference]: Start difference. First operand 1628 states and 2954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,650 INFO L93 Difference]: Finished difference Result 1742 states and 3127 transitions. [2023-12-18 23:15:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:15:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,655 INFO L225 Difference]: With dead ends: 1742 [2023-12-18 23:15:52,655 INFO L226 Difference]: Without dead ends: 1682 [2023-12-18 23:15:52,655 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 [2023-12-18 23:15:52,655 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-12-18 23:15:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1680. [2023-12-18 23:15:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.8063170441001193) internal successors, (3031), 1679 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 3031 transitions. [2023-12-18 23:15:52,679 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 3031 transitions. Word has length 36 [2023-12-18 23:15:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,680 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 3031 transitions. [2023-12-18 23:15:52,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 3031 transitions. [2023-12-18 23:15:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:15:52,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,680 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] [2023-12-18 23:15:52,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:15:52,680 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -448498473, now seen corresponding path program 1 times [2023-12-18 23:15:52,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24898693] [2023-12-18 23:15:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24898693] [2023-12-18 23:15:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24898693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878077340] [2023-12-18 23:15:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,704 INFO L87 Difference]: Start difference. First operand 1680 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,729 INFO L93 Difference]: Finished difference Result 1962 states and 3451 transitions. [2023-12-18 23:15:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:15:52,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,735 INFO L225 Difference]: With dead ends: 1962 [2023-12-18 23:15:52,735 INFO L226 Difference]: Without dead ends: 1809 [2023-12-18 23:15:52,736 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 [2023-12-18 23:15:52,736 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-12-18 23:15:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1807. [2023-12-18 23:15:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1805 states have (on average 1.7800554016620498) internal successors, (3213), 1806 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3213 transitions. [2023-12-18 23:15:52,766 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3213 transitions. Word has length 36 [2023-12-18 23:15:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,767 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 3213 transitions. [2023-12-18 23:15:52,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3213 transitions. [2023-12-18 23:15:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:15:52,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,767 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] [2023-12-18 23:15:52,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:15:52,768 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 440234967, now seen corresponding path program 1 times [2023-12-18 23:15:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595033288] [2023-12-18 23:15:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595033288] [2023-12-18 23:15:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595033288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488964644] [2023-12-18 23:15:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,792 INFO L87 Difference]: Start difference. First operand 1807 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,819 INFO L93 Difference]: Finished difference Result 2319 states and 3955 transitions. [2023-12-18 23:15:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:15:52,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,825 INFO L225 Difference]: With dead ends: 2319 [2023-12-18 23:15:52,825 INFO L226 Difference]: Without dead ends: 2039 [2023-12-18 23:15:52,826 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 [2023-12-18 23:15:52,826 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-12-18 23:15:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2037. [2023-12-18 23:15:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2035 states have (on average 1.7341523341523342) internal successors, (3529), 2036 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3529 transitions. [2023-12-18 23:15:52,858 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3529 transitions. Word has length 36 [2023-12-18 23:15:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,858 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 3529 transitions. [2023-12-18 23:15:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3529 transitions. [2023-12-18 23:15:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:15:52,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:15:52,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash -615837049, now seen corresponding path program 1 times [2023-12-18 23:15:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355523780] [2023-12-18 23:15:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:15:52,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355523780] [2023-12-18 23:15:52,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355523780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272962796] [2023-12-18 23:15:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:52,917 INFO L87 Difference]: Start difference. First operand 2037 states and 3529 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,018 INFO L93 Difference]: Finished difference Result 3545 states and 5681 transitions. [2023-12-18 23:15:53,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:15:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,027 INFO L225 Difference]: With dead ends: 3545 [2023-12-18 23:15:53,027 INFO L226 Difference]: Without dead ends: 3175 [2023-12-18 23:15:53,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:15:53,028 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-12-18 23:15:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2477. [2023-12-18 23:15:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6763636363636363) internal successors, (4149), 2476 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4149 transitions. [2023-12-18 23:15:53,084 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4149 transitions. Word has length 50 [2023-12-18 23:15:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,084 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 4149 transitions. [2023-12-18 23:15:53,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4149 transitions. [2023-12-18 23:15:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:15:53,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:53,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:15:53,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1241493113, now seen corresponding path program 1 times [2023-12-18 23:15:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33720519] [2023-12-18 23:15:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:15:53,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33720519] [2023-12-18 23:15:53,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33720519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136202080] [2023-12-18 23:15:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:53,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:53,145 INFO L87 Difference]: Start difference. First operand 2477 states and 4149 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,293 INFO L93 Difference]: Finished difference Result 4053 states and 6401 transitions. [2023-12-18 23:15:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:53,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:15:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,302 INFO L225 Difference]: With dead ends: 4053 [2023-12-18 23:15:53,302 INFO L226 Difference]: Without dead ends: 3543 [2023-12-18 23:15:53,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:15:53,304 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3140 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:15:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-12-18 23:15:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3169. [2023-12-18 23:15:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6169876855067888) internal successors, (5121), 3168 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5121 transitions. [2023-12-18 23:15:53,376 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5121 transitions. Word has length 50 [2023-12-18 23:15:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5121 transitions. [2023-12-18 23:15:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5121 transitions. [2023-12-18 23:15:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:15:53,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:15:53,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash -352759673, now seen corresponding path program 1 times [2023-12-18 23:15:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276771055] [2023-12-18 23:15:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:15:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276771055] [2023-12-18 23:15:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276771055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903500553] [2023-12-18 23:15:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:53,447 INFO L87 Difference]: Start difference. First operand 3169 states and 5121 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,554 INFO L93 Difference]: Finished difference Result 4561 states and 7117 transitions. [2023-12-18 23:15:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:53,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:15:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,566 INFO L225 Difference]: With dead ends: 4561 [2023-12-18 23:15:53,566 INFO L226 Difference]: Without dead ends: 4051 [2023-12-18 23:15:53,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:15:53,568 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2023-12-18 23:15:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3677. [2023-12-18 23:15:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5882993197278912) internal successors, (5837), 3676 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5837 transitions. [2023-12-18 23:15:53,674 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5837 transitions. Word has length 50 [2023-12-18 23:15:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,674 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5837 transitions. [2023-12-18 23:15:53,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5837 transitions. [2023-12-18 23:15:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-18 23:15:53,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:53,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:15:53,676 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1472152007, now seen corresponding path program 1 times [2023-12-18 23:15:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077630297] [2023-12-18 23:15:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077630297] [2023-12-18 23:15:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077630297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:53,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471555062] [2023-12-18 23:15:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:53,750 INFO L87 Difference]: Start difference. First operand 3677 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,807 INFO L93 Difference]: Finished difference Result 5829 states and 8875 transitions. [2023-12-18 23:15:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-18 23:15:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,813 INFO L225 Difference]: With dead ends: 5829 [2023-12-18 23:15:53,813 INFO L226 Difference]: Without dead ends: 3679 [2023-12-18 23:15:53,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:53,816 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2023-12-18 23:15:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3677. [2023-12-18 23:15:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5746938775510204) internal successors, (5787), 3676 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5787 transitions. [2023-12-18 23:15:53,888 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5787 transitions. Word has length 51 [2023-12-18 23:15:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,888 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5787 transitions. [2023-12-18 23:15:53,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5787 transitions. [2023-12-18 23:15:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 23:15:53,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:53,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:15:53,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash 805481295, now seen corresponding path program 1 times [2023-12-18 23:15:53,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561867761] [2023-12-18 23:15:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561867761] [2023-12-18 23:15:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561867761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:53,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516646714] [2023-12-18 23:15:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:53,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:53,950 INFO L87 Difference]: Start difference. First operand 3677 states and 5787 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,987 INFO L93 Difference]: Finished difference Result 4523 states and 6974 transitions. [2023-12-18 23:15:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-18 23:15:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,991 INFO L225 Difference]: With dead ends: 4523 [2023-12-18 23:15:53,991 INFO L226 Difference]: Without dead ends: 2373 [2023-12-18 23:15:53,994 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 [2023-12-18 23:15:53,995 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-18 23:15:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2366. [2023-12-18 23:15:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.6759729272419628) internal successors, (3962), 2365 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3962 transitions. [2023-12-18 23:15:54,032 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3962 transitions. Word has length 52 [2023-12-18 23:15:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:54,032 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3962 transitions. [2023-12-18 23:15:54,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3962 transitions. [2023-12-18 23:15:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-18 23:15:54,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:54,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:54,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:15:54,033 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:54,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -441855801, now seen corresponding path program 1 times [2023-12-18 23:15:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587795496] [2023-12-18 23:15:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587795496] [2023-12-18 23:15:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587795496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497925918] [2023-12-18 23:15:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:54,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:54,095 INFO L87 Difference]: Start difference. First operand 2366 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:54,126 INFO L93 Difference]: Finished difference Result 2784 states and 4540 transitions. [2023-12-18 23:15:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-18 23:15:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:54,130 INFO L225 Difference]: With dead ends: 2784 [2023-12-18 23:15:54,130 INFO L226 Difference]: Without dead ends: 1954 [2023-12-18 23:15:54,131 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 [2023-12-18 23:15:54,131 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:54,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-12-18 23:15:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2023-12-18 23:15:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1950 states have (on average 1.731794871794872) internal successors, (3377), 1951 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3377 transitions. [2023-12-18 23:15:54,164 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3377 transitions. Word has length 53 [2023-12-18 23:15:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:54,164 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3377 transitions. [2023-12-18 23:15:54,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3377 transitions. [2023-12-18 23:15:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-18 23:15:54,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:54,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:54,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 23:15:54,165 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:54,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -448750379, now seen corresponding path program 1 times [2023-12-18 23:15:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653118576] [2023-12-18 23:15:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:55,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653118576] [2023-12-18 23:15:55,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653118576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:15:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567517806] [2023-12-18 23:15:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:55,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:15:55,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:15:55,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:15:55,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:15:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:55,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 23:15:55,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:15:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:15:55,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:15:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:15:55,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567517806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:15:55,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:15:55,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:15:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220048251] [2023-12-18 23:15:55,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:15:55,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:15:55,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:15:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:15:55,840 INFO L87 Difference]: Start difference. First operand 1952 states and 3377 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:57,253 INFO L93 Difference]: Finished difference Result 4051 states and 6129 transitions. [2023-12-18 23:15:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-18 23:15:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 55 [2023-12-18 23:15:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:57,258 INFO L225 Difference]: With dead ends: 4051 [2023-12-18 23:15:57,258 INFO L226 Difference]: Without dead ends: 3635 [2023-12-18 23:15:57,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:15:57,260 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 14152 mSDsluCounter, 6177 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14152 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:57,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14152 Valid, 7668 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:15:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2023-12-18 23:15:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3423. [2023-12-18 23:15:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 3421 states have (on average 1.5290850628471206) internal successors, (5231), 3422 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 5231 transitions. [2023-12-18 23:15:57,323 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 5231 transitions. Word has length 55 [2023-12-18 23:15:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:57,323 INFO L495 AbstractCegarLoop]: Abstraction has 3423 states and 5231 transitions. [2023-12-18 23:15:57,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 5231 transitions. [2023-12-18 23:15:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-18 23:15:57,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:57,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:57,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 23:15:57,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-18 23:15:57,530 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:57,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -248115839, now seen corresponding path program 1 times [2023-12-18 23:15:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486950645] [2023-12-18 23:15:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:57,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486950645] [2023-12-18 23:15:57,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486950645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:15:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578375657] [2023-12-18 23:15:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:57,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:15:57,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:15:57,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:15:58,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:15:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:58,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:15:58,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:15:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:58,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:15:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578375657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:15:59,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:15:59,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-18 23:15:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810335622] [2023-12-18 23:15:59,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:15:59,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:15:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:15:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:15:59,211 INFO L87 Difference]: Start difference. First operand 3423 states and 5231 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:59,780 INFO L93 Difference]: Finished difference Result 6752 states and 9463 transitions. [2023-12-18 23:15:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 23:15:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-18 23:15:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:59,795 INFO L225 Difference]: With dead ends: 6752 [2023-12-18 23:15:59,795 INFO L226 Difference]: Without dead ends: 5173 [2023-12-18 23:15:59,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 23:15:59,797 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 11867 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11867 SdHoareTripleChecker+Valid, 7555 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:59,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11867 Valid, 7555 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:15:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2023-12-18 23:16:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4963. [2023-12-18 23:16:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4961 states have (on average 1.448498286635759) internal successors, (7186), 4962 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7186 transitions. [2023-12-18 23:16:00,076 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7186 transitions. Word has length 56 [2023-12-18 23:16:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:00,076 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 7186 transitions. [2023-12-18 23:16:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7186 transitions. [2023-12-18 23:16:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-18 23:16:00,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:00,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:16:00,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 23:16:00,280 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:00,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2077442177, now seen corresponding path program 1 times [2023-12-18 23:16:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218467002] [2023-12-18 23:16:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:00,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218467002] [2023-12-18 23:16:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218467002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239600773] [2023-12-18 23:16:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:00,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:00,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:00,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:16:00,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:16:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:00,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:16:00,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:01,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239600773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:01,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-18 23:16:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529066996] [2023-12-18 23:16:01,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 23:16:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 23:16:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-18 23:16:01,649 INFO L87 Difference]: Start difference. First operand 4963 states and 7186 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:16:02,350 INFO L93 Difference]: Finished difference Result 8312 states and 11462 transitions. [2023-12-18 23:16:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:16:02,351 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-18 23:16:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:16:02,358 INFO L225 Difference]: With dead ends: 8312 [2023-12-18 23:16:02,359 INFO L226 Difference]: Without dead ends: 5311 [2023-12-18 23:16:02,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 23:16:02,364 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 10652 mSDsluCounter, 7716 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10652 SdHoareTripleChecker+Valid, 9209 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:16:02,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10652 Valid, 9209 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:16:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2023-12-18 23:16:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5023. [2023-12-18 23:16:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5021 states have (on average 1.4351722764389563) internal successors, (7206), 5022 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:02,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 7206 transitions. [2023-12-18 23:16:02,537 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 7206 transitions. Word has length 56 [2023-12-18 23:16:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:02,537 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 7206 transitions. [2023-12-18 23:16:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 7206 transitions. [2023-12-18 23:16:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-18 23:16:02,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:02,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:16:02,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:02,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:02,743 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:02,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash -988630143, now seen corresponding path program 1 times [2023-12-18 23:16:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797773615] [2023-12-18 23:16:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:03,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:03,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797773615] [2023-12-18 23:16:03,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797773615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:03,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830038957] [2023-12-18 23:16:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:03,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:03,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:03,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:16:03,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:16:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:03,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:16:03,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:03,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830038957] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:04,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-18 23:16:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044386800] [2023-12-18 23:16:04,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:04,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 23:16:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 23:16:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-18 23:16:04,161 INFO L87 Difference]: Start difference. First operand 5023 states and 7206 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:16:04,898 INFO L93 Difference]: Finished difference Result 11604 states and 15489 transitions. [2023-12-18 23:16:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:16:04,898 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 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 56 [2023-12-18 23:16:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:16:04,910 INFO L225 Difference]: With dead ends: 11604 [2023-12-18 23:16:04,910 INFO L226 Difference]: Without dead ends: 8842 [2023-12-18 23:16:04,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 23:16:04,914 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 14953 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14953 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:16:04,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14953 Valid, 6084 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:16:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2023-12-18 23:16:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8322. [2023-12-18 23:16:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 8320 states have (on average 1.3495192307692307) internal successors, (11228), 8321 states have internal predecessors, (11228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 11228 transitions. [2023-12-18 23:16:05,097 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 11228 transitions. Word has length 56 [2023-12-18 23:16:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:05,097 INFO L495 AbstractCegarLoop]: Abstraction has 8322 states and 11228 transitions. [2023-12-18 23:16:05,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 11228 transitions. [2023-12-18 23:16:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-18 23:16:05,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:05,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:16:05,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:05,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:05,303 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:05,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash 303878803, now seen corresponding path program 1 times [2023-12-18 23:16:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018198906] [2023-12-18 23:16:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018198906] [2023-12-18 23:16:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018198906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060619123] [2023-12-18 23:16:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:05,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:05,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:16:05,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:16:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:05,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-18 23:16:05,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:08,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060619123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:10,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-18 23:16:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930168640] [2023-12-18 23:16:10,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 23:16:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 23:16:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:16:10,662 INFO L87 Difference]: Start difference. First operand 8322 states and 11228 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:16:57,261 INFO L93 Difference]: Finished difference Result 17941 states and 23177 transitions. [2023-12-18 23:16:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-18 23:16:57,261 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 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 57 [2023-12-18 23:16:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:16:57,276 INFO L225 Difference]: With dead ends: 17941 [2023-12-18 23:16:57,276 INFO L226 Difference]: Without dead ends: 12855 [2023-12-18 23:16:57,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22446 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=10024, Invalid=43106, Unknown=0, NotChecked=0, Total=53130 [2023-12-18 23:16:57,289 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 25262 mSDsluCounter, 15647 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25262 SdHoareTripleChecker+Valid, 17150 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:16:57,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25262 Valid, 17150 Invalid, 1887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 23:16:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12855 states. [2023-12-18 23:16:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12855 to 7588. [2023-12-18 23:16:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7588 states, 7586 states have (on average 1.365673609280253) internal successors, (10360), 7587 states have internal predecessors, (10360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7588 states to 7588 states and 10360 transitions. [2023-12-18 23:16:57,597 INFO L78 Accepts]: Start accepts. Automaton has 7588 states and 10360 transitions. Word has length 57 [2023-12-18 23:16:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:57,597 INFO L495 AbstractCegarLoop]: Abstraction has 7588 states and 10360 transitions. [2023-12-18 23:16:57,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7588 states and 10360 transitions. [2023-12-18 23:16:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 23:16:57,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:57,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:16:57,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:57,803 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:57,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2054228577, now seen corresponding path program 1 times [2023-12-18 23:16:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:57,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008393546] [2023-12-18 23:16:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:58,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008393546] [2023-12-18 23:16:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008393546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400077772] [2023-12-18 23:16:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:58,188 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:16:58,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:16:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:58,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 23:16:58,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:58,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:59,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400077772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:59,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-18 23:16:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131989947] [2023-12-18 23:16:59,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:59,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 23:16:59,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:59,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 23:16:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-18 23:16:59,498 INFO L87 Difference]: Start difference. First operand 7588 states and 10360 transitions. Second operand has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:17:01,528 INFO L93 Difference]: Finished difference Result 14113 states and 18595 transitions. [2023-12-18 23:17:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 23:17:01,528 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-18 23:17:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:17:01,565 INFO L225 Difference]: With dead ends: 14113 [2023-12-18 23:17:01,565 INFO L226 Difference]: Without dead ends: 11279 [2023-12-18 23:17:01,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=793, Invalid=2867, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:17:01,569 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 14918 mSDsluCounter, 13590 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14918 SdHoareTripleChecker+Valid, 15086 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:17:01,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14918 Valid, 15086 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:17:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11279 states. [2023-12-18 23:17:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11279 to 6022. [2023-12-18 23:17:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6022 states, 6020 states have (on average 1.3985049833887042) internal successors, (8419), 6021 states have internal predecessors, (8419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8419 transitions. [2023-12-18 23:17:01,791 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8419 transitions. Word has length 59 [2023-12-18 23:17:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:17:01,791 INFO L495 AbstractCegarLoop]: Abstraction has 6022 states and 8419 transitions. [2023-12-18 23:17:01,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8419 transitions. [2023-12-18 23:17:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-18 23:17:01,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:17:01,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:17:01,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 23:17:01,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:01,998 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:17:01,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:17:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1832193397, now seen corresponding path program 1 times [2023-12-18 23:17:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:17:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715722909] [2023-12-18 23:17:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:17:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:17:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715722909] [2023-12-18 23:17:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715722909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:17:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520437554] [2023-12-18 23:17:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:02,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:17:02,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:17:02,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:17:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:02,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-18 23:17:02,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:17:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:05,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:17:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:11,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520437554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:17:11,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:17:11,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 65 [2023-12-18 23:17:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611428603] [2023-12-18 23:17:11,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:17:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-18 23:17:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:17:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-18 23:17:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3821, Unknown=0, NotChecked=0, Total=4160 [2023-12-18 23:17:11,403 INFO L87 Difference]: Start difference. First operand 6022 states and 8419 transitions. Second operand has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:18,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-18 23:19:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:19:00,317 INFO L93 Difference]: Finished difference Result 15132 states and 19697 transitions. [2023-12-18 23:19:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-18 23:19:00,317 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 0 states have call successors, (0), 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 93 [2023-12-18 23:19:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:19:00,334 INFO L225 Difference]: With dead ends: 15132 [2023-12-18 23:19:00,334 INFO L226 Difference]: Without dead ends: 13362 [2023-12-18 23:19:00,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34445 ImplicationChecksByTransitivity, 100.5s TimeCoverageRelationStatistics Valid=12357, Invalid=81585, Unknown=0, NotChecked=0, Total=93942 [2023-12-18 23:19:00,345 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 37707 mSDsluCounter, 29011 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37707 SdHoareTripleChecker+Valid, 30571 SdHoareTripleChecker+Invalid, 3982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:19:00,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37707 Valid, 30571 Invalid, 3982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [353 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-18 23:19:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13362 states. [2023-12-18 23:19:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13362 to 8552. [2023-12-18 23:19:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8552 states, 8550 states have (on average 1.3553216374269006) internal successors, (11588), 8551 states have internal predecessors, (11588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 11588 transitions. [2023-12-18 23:19:01,132 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 11588 transitions. Word has length 93 [2023-12-18 23:19:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:19:01,132 INFO L495 AbstractCegarLoop]: Abstraction has 8552 states and 11588 transitions. [2023-12-18 23:19:01,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 11588 transitions. [2023-12-18 23:19:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-18 23:19:01,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:19:01,135 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:19:01,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 23:19:01,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:19:01,342 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:19:01,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:19:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1827091489, now seen corresponding path program 1 times [2023-12-18 23:19:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:19:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564241262] [2023-12-18 23:19:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:19:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:02,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:19:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564241262] [2023-12-18 23:19:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564241262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:19:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225053095] [2023-12-18 23:19:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:02,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:19:02,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:19:02,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:19:02,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:19:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:02,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:19:02,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:19:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:02,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:19:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225053095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:19:04,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:19:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-18 23:19:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659420546] [2023-12-18 23:19:04,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:19:04,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-18 23:19:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:19:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-18 23:19:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-18 23:19:04,407 INFO L87 Difference]: Start difference. First operand 8552 states and 11588 transitions. Second operand has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:19:05,940 INFO L93 Difference]: Finished difference Result 13577 states and 17956 transitions. [2023-12-18 23:19:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 23:19:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 0 states have call successors, (0), 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 94 [2023-12-18 23:19:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:19:05,948 INFO L225 Difference]: With dead ends: 13577 [2023-12-18 23:19:05,948 INFO L226 Difference]: Without dead ends: 8888 [2023-12-18 23:19:05,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 23:19:05,952 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 11947 mSDsluCounter, 9101 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11947 SdHoareTripleChecker+Valid, 10601 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:19:05,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11947 Valid, 10601 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:19:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8888 states. [2023-12-18 23:19:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8888 to 8552. [2023-12-18 23:19:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8552 states, 8550 states have (on average 1.3430409356725146) internal successors, (11483), 8551 states have internal predecessors, (11483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 11483 transitions. [2023-12-18 23:19:06,515 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 11483 transitions. Word has length 94 [2023-12-18 23:19:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:19:06,516 INFO L495 AbstractCegarLoop]: Abstraction has 8552 states and 11483 transitions. [2023-12-18 23:19:06,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 11483 transitions. [2023-12-18 23:19:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-18 23:19:06,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:19:06,518 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:19:06,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 23:19:06,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 23:19:06,724 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:19:06,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:19:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash -987272573, now seen corresponding path program 1 times [2023-12-18 23:19:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:19:06,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980773633] [2023-12-18 23:19:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:06,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:19:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:19:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980773633] [2023-12-18 23:19:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980773633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:19:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160938387] [2023-12-18 23:19:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:07,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:19:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:19:07,373 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:19:07,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:19:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:07,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-18 23:19:07,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:19:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:08,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:19:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:11,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160938387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:19:11,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:19:11,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 17] total 52 [2023-12-18 23:19:11,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463991804] [2023-12-18 23:19:11,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:19:11,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-18 23:19:11,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:19:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-18 23:19:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2344, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:19:11,735 INFO L87 Difference]: Start difference. First operand 8552 states and 11483 transitions. Second operand has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:19:23,502 INFO L93 Difference]: Finished difference Result 20549 states and 26346 transitions. [2023-12-18 23:19:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-18 23:19:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 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 94 [2023-12-18 23:19:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:19:23,518 INFO L225 Difference]: With dead ends: 20549 [2023-12-18 23:19:23,518 INFO L226 Difference]: Without dead ends: 15124 [2023-12-18 23:19:23,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4083 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=3070, Invalid=12182, Unknown=0, NotChecked=0, Total=15252 [2023-12-18 23:19:23,527 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 17990 mSDsluCounter, 31945 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17990 SdHoareTripleChecker+Valid, 33474 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:19:23,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17990 Valid, 33474 Invalid, 1675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 23:19:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15124 states. [2023-12-18 23:19:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15124 to 14012. [2023-12-18 23:19:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14012 states, 14010 states have (on average 1.3004282655246253) internal successors, (18219), 14011 states have internal predecessors, (18219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14012 states to 14012 states and 18219 transitions. [2023-12-18 23:19:24,738 INFO L78 Accepts]: Start accepts. Automaton has 14012 states and 18219 transitions. Word has length 94 [2023-12-18 23:19:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:19:24,738 INFO L495 AbstractCegarLoop]: Abstraction has 14012 states and 18219 transitions. [2023-12-18 23:19:24,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 14012 states and 18219 transitions. [2023-12-18 23:19:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 23:19:24,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:19:24,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:19:24,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-18 23:19:24,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-18 23:19:24,949 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:19:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:19:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1832146431, now seen corresponding path program 1 times [2023-12-18 23:19:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:19:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733595214] [2023-12-18 23:19:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:24,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:19:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:25,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:19:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733595214] [2023-12-18 23:19:25,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733595214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:19:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473102196] [2023-12-18 23:19:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:19:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:19:25,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:19:25,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:19:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:25,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-18 23:19:25,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:19:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 23:19:28,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:19:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 23:19:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473102196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:19:30,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:19:30,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 58 [2023-12-18 23:19:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558066921] [2023-12-18 23:19:30,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:19:30,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-18 23:19:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:19:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-18 23:19:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2023-12-18 23:19:30,946 INFO L87 Difference]: Start difference. First operand 14012 states and 18219 transitions. Second operand has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:19:57,479 INFO L93 Difference]: Finished difference Result 26065 states and 32968 transitions. [2023-12-18 23:19:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-18 23:19:57,479 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 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 [2023-12-18 23:19:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:19:57,497 INFO L225 Difference]: With dead ends: 26065 [2023-12-18 23:19:57,497 INFO L226 Difference]: Without dead ends: 19419 [2023-12-18 23:19:57,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12235 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=5990, Invalid=34210, Unknown=0, NotChecked=0, Total=40200 [2023-12-18 23:19:57,503 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 31801 mSDsluCounter, 36781 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31801 SdHoareTripleChecker+Valid, 38358 SdHoareTripleChecker+Invalid, 4420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:19:57,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31801 Valid, 38358 Invalid, 4420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [145 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-18 23:19:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19419 states. [2023-12-18 23:19:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19419 to 16621. [2023-12-18 23:19:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16621 states, 16619 states have (on average 1.2876827727300078) internal successors, (21400), 16620 states have internal predecessors, (21400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16621 states to 16621 states and 21400 transitions. [2023-12-18 23:19:58,945 INFO L78 Accepts]: Start accepts. Automaton has 16621 states and 21400 transitions. Word has length 95 [2023-12-18 23:19:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:19:58,946 INFO L495 AbstractCegarLoop]: Abstraction has 16621 states and 21400 transitions. [2023-12-18 23:19:58,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 16621 states and 21400 transitions. [2023-12-18 23:19:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 23:19:58,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:19:58,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:19:58,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:19:59,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-18 23:19:59,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:19:59,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:19:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1103610279, now seen corresponding path program 1 times [2023-12-18 23:19:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:19:59,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392250410] [2023-12-18 23:19:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:19:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:19:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392250410] [2023-12-18 23:19:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392250410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:19:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120579173] [2023-12-18 23:19:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:59,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:19:59,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:19:59,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:19:59,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:19:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:59,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:19:59,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:20:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:00,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:20:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:01,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120579173] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:20:01,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:20:01,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-18 23:20:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133377448] [2023-12-18 23:20:01,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:20:01,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 23:20:01,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:20:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 23:20:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2023-12-18 23:20:01,551 INFO L87 Difference]: Start difference. First operand 16621 states and 21400 transitions. Second operand has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:20:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:20:03,698 INFO L93 Difference]: Finished difference Result 28244 states and 35890 transitions. [2023-12-18 23:20:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 23:20:03,698 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 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 [2023-12-18 23:20:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:20:03,714 INFO L225 Difference]: With dead ends: 28244 [2023-12-18 23:20:03,714 INFO L226 Difference]: Without dead ends: 16743 [2023-12-18 23:20:03,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2023-12-18 23:20:03,720 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 11847 mSDsluCounter, 9115 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11847 SdHoareTripleChecker+Valid, 10618 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:20:03,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11847 Valid, 10618 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:20:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16743 states. [2023-12-18 23:20:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16743 to 16613. [2023-12-18 23:20:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16613 states, 16611 states have (on average 1.2694599963879356) internal successors, (21087), 16612 states have internal predecessors, (21087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:20:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16613 states to 16613 states and 21087 transitions. [2023-12-18 23:20:05,232 INFO L78 Accepts]: Start accepts. Automaton has 16613 states and 21087 transitions. Word has length 95 [2023-12-18 23:20:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:20:05,234 INFO L495 AbstractCegarLoop]: Abstraction has 16613 states and 21087 transitions. [2023-12-18 23:20:05,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:20:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 16613 states and 21087 transitions. [2023-12-18 23:20:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-18 23:20:05,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:20:05,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:20:05,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 23:20:05,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 23:20:05,440 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:20:05,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:20:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1636809883, now seen corresponding path program 1 times [2023-12-18 23:20:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:20:05,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021673236] [2023-12-18 23:20:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:20:05,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:20:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:20:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:20:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021673236] [2023-12-18 23:20:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021673236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:20:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227290000] [2023-12-18 23:20:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:20:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:20:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:20:06,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:20:06,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:20:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:20:06,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-18 23:20:06,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:20:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:08,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:20:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:11,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227290000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:20:11,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:20:11,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 24] total 66 [2023-12-18 23:20:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032629628] [2023-12-18 23:20:11,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:20:11,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-18 23:20:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:20:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-18 23:20:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3942, Unknown=0, NotChecked=0, Total=4290 [2023-12-18 23:20:11,928 INFO L87 Difference]: Start difference. First operand 16613 states and 21087 transitions. Second operand has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:20:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:20:38,888 INFO L93 Difference]: Finished difference Result 28415 states and 35364 transitions. [2023-12-18 23:20:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-18 23:20:38,889 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 0 states have call successors, (0), 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 [2023-12-18 23:20:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:20:38,907 INFO L225 Difference]: With dead ends: 28415 [2023-12-18 23:20:38,907 INFO L226 Difference]: Without dead ends: 22301 [2023-12-18 23:20:38,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14098 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=7178, Invalid=41884, Unknown=0, NotChecked=0, Total=49062 [2023-12-18 23:20:38,917 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 27511 mSDsluCounter, 33789 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27511 SdHoareTripleChecker+Valid, 35315 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:20:38,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27511 Valid, 35315 Invalid, 2603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [167 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 23:20:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22301 states. [2023-12-18 23:20:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22301 to 16347. [2023-12-18 23:20:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16347 states, 16345 states have (on average 1.2697460997246865) internal successors, (20754), 16346 states have internal predecessors, (20754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:20:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16347 states to 16347 states and 20754 transitions. [2023-12-18 23:20:40,549 INFO L78 Accepts]: Start accepts. Automaton has 16347 states and 20754 transitions. Word has length 96 [2023-12-18 23:20:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:20:40,550 INFO L495 AbstractCegarLoop]: Abstraction has 16347 states and 20754 transitions. [2023-12-18 23:20:40,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:20:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16347 states and 20754 transitions. [2023-12-18 23:20:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-18 23:20:40,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:20:40,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:20:40,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 23:20:40,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 23:20:40,757 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:20:40,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:20:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1067067039, now seen corresponding path program 1 times [2023-12-18 23:20:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:20:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57694801] [2023-12-18 23:20:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:20:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:20:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:20:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:41,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:20:41,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57694801] [2023-12-18 23:20:41,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57694801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:20:41,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37060961] [2023-12-18 23:20:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:20:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:20:41,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:20:41,964 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:20:41,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:20:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:20:42,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 23:20:42,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:20:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:44,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:20:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:20:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37060961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:20:48,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:20:48,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 21] total 66 [2023-12-18 23:20:48,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308148470] [2023-12-18 23:20:48,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:20:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-18 23:20:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:20:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-18 23:20:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3958, Unknown=0, NotChecked=0, Total=4290 [2023-12-18 23:20:48,660 INFO L87 Difference]: Start difference. First operand 16347 states and 20754 transitions. Second operand has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:21:53,929 INFO L93 Difference]: Finished difference Result 26538 states and 33013 transitions. [2023-12-18 23:21:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-18 23:21:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 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 [2023-12-18 23:21:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:21:53,946 INFO L225 Difference]: With dead ends: 26538 [2023-12-18 23:21:53,947 INFO L226 Difference]: Without dead ends: 23672 [2023-12-18 23:21:53,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31193 ImplicationChecksByTransitivity, 61.5s TimeCoverageRelationStatistics Valid=11193, Invalid=77909, Unknown=0, NotChecked=0, Total=89102 [2023-12-18 23:21:53,952 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 26770 mSDsluCounter, 31809 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26770 SdHoareTripleChecker+Valid, 33384 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:21:53,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26770 Valid, 33384 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [228 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-18 23:21:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23672 states. [2023-12-18 23:21:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23672 to 17568. [2023-12-18 23:21:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17568 states, 17566 states have (on average 1.2649436411249004) internal successors, (22220), 17567 states have internal predecessors, (22220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17568 states to 17568 states and 22220 transitions. [2023-12-18 23:21:56,044 INFO L78 Accepts]: Start accepts. Automaton has 17568 states and 22220 transitions. Word has length 96 [2023-12-18 23:21:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:21:56,045 INFO L495 AbstractCegarLoop]: Abstraction has 17568 states and 22220 transitions. [2023-12-18 23:21:56,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17568 states and 22220 transitions. [2023-12-18 23:21:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:21:56,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:21:56,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:21:56,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-18 23:21:56,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 23:21:56,253 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:21:56,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:21:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 560596799, now seen corresponding path program 1 times [2023-12-18 23:21:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:21:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426279159] [2023-12-18 23:21:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:21:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:21:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:21:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:21:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426279159] [2023-12-18 23:21:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426279159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:21:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745185315] [2023-12-18 23:21:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:21:56,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:21:56,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:21:56,989 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:21:56,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:21:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:21:57,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:21:57,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:21:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:58,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745185315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:01,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:01,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 54 [2023-12-18 23:22:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6213740] [2023-12-18 23:22:01,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:01,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-18 23:22:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:01,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-18 23:22:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2023-12-18 23:22:01,120 INFO L87 Difference]: Start difference. First operand 17568 states and 22220 transitions. Second operand has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:15,111 INFO L93 Difference]: Finished difference Result 30080 states and 37417 transitions. [2023-12-18 23:22:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-18 23:22:15,111 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 0 states have call successors, (0), 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 [2023-12-18 23:22:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:15,134 INFO L225 Difference]: With dead ends: 30080 [2023-12-18 23:22:15,135 INFO L226 Difference]: Without dead ends: 24954 [2023-12-18 23:22:15,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7024 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=4131, Invalid=19739, Unknown=0, NotChecked=0, Total=23870 [2023-12-18 23:22:15,141 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 18340 mSDsluCounter, 19482 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18340 SdHoareTripleChecker+Valid, 21062 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:15,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18340 Valid, 21062 Invalid, 2473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-18 23:22:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24954 states. [2023-12-18 23:22:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24954 to 17506. [2023-12-18 23:22:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17506 states, 17504 states have (on average 1.264796617915905) internal successors, (22139), 17505 states have internal predecessors, (22139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17506 states to 17506 states and 22139 transitions. [2023-12-18 23:22:17,207 INFO L78 Accepts]: Start accepts. Automaton has 17506 states and 22139 transitions. Word has length 97 [2023-12-18 23:22:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:17,207 INFO L495 AbstractCegarLoop]: Abstraction has 17506 states and 22139 transitions. [2023-12-18 23:22:17,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17506 states and 22139 transitions. [2023-12-18 23:22:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:22:17,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:17,209 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:17,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 23:22:17,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:17,414 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:17,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash -602591777, now seen corresponding path program 1 times [2023-12-18 23:22:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:17,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211381318] [2023-12-18 23:22:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211381318] [2023-12-18 23:22:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211381318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964939218] [2023-12-18 23:22:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:18,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:18,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:18,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 23:22:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:18,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:18,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:20,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964939218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:20,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:20,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 49 [2023-12-18 23:22:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744439927] [2023-12-18 23:22:20,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 23:22:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 23:22:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2149, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:22:20,770 INFO L87 Difference]: Start difference. First operand 17506 states and 22139 transitions. Second operand has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:40,681 INFO L93 Difference]: Finished difference Result 49405 states and 60682 transitions. [2023-12-18 23:22:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-18 23:22:40,682 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 0 states have call successors, (0), 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 [2023-12-18 23:22:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:40,720 INFO L225 Difference]: With dead ends: 49405 [2023-12-18 23:22:40,720 INFO L226 Difference]: Without dead ends: 36414 [2023-12-18 23:22:40,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21135 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=8690, Invalid=46770, Unknown=0, NotChecked=0, Total=55460 [2023-12-18 23:22:40,729 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 24454 mSDsluCounter, 21924 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24454 SdHoareTripleChecker+Valid, 23555 SdHoareTripleChecker+Invalid, 5318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:40,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24454 Valid, 23555 Invalid, 5318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-18 23:22:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36414 states. [2023-12-18 23:22:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36414 to 24912. [2023-12-18 23:22:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24912 states, 24910 states have (on average 1.2530309112806102) internal successors, (31213), 24911 states have internal predecessors, (31213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24912 states to 24912 states and 31213 transitions. [2023-12-18 23:22:43,834 INFO L78 Accepts]: Start accepts. Automaton has 24912 states and 31213 transitions. Word has length 97 [2023-12-18 23:22:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:43,834 INFO L495 AbstractCegarLoop]: Abstraction has 24912 states and 31213 transitions. [2023-12-18 23:22:43,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 24912 states and 31213 transitions. [2023-12-18 23:22:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:22:43,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:43,836 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:43,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:44,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:44,042 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:44,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1151865627, now seen corresponding path program 1 times [2023-12-18 23:22:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:44,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381485410] [2023-12-18 23:22:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 42 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381485410] [2023-12-18 23:22:44,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381485410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505841579] [2023-12-18 23:22:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:44,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:44,413 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:44,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 23:22:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:44,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:44,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:45,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 41 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:46,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505841579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:46,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:46,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-18 23:22:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527905123] [2023-12-18 23:22:46,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:46,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 23:22:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 23:22:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 23:22:46,932 INFO L87 Difference]: Start difference. First operand 24912 states and 31213 transitions. Second operand has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:57,903 INFO L93 Difference]: Finished difference Result 66555 states and 82354 transitions. [2023-12-18 23:22:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-18 23:22:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 0 states have call successors, (0), 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 [2023-12-18 23:22:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:57,962 INFO L225 Difference]: With dead ends: 66555 [2023-12-18 23:22:57,962 INFO L226 Difference]: Without dead ends: 50113 [2023-12-18 23:22:57,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2788 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-18 23:22:57,971 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 23426 mSDsluCounter, 16115 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23426 SdHoareTripleChecker+Valid, 17669 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:57,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23426 Valid, 17669 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 23:22:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50113 states. [2023-12-18 23:23:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50113 to 32424. [2023-12-18 23:23:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32424 states, 32422 states have (on average 1.2481031398433162) internal successors, (40466), 32423 states have internal predecessors, (40466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32424 states to 32424 states and 40466 transitions. [2023-12-18 23:23:02,513 INFO L78 Accepts]: Start accepts. Automaton has 32424 states and 40466 transitions. Word has length 97 [2023-12-18 23:23:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:02,514 INFO L495 AbstractCegarLoop]: Abstraction has 32424 states and 40466 transitions. [2023-12-18 23:23:02,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 32424 states and 40466 transitions. [2023-12-18 23:23:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:23:02,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:02,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:02,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-18 23:23:02,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:02,720 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:02,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash -230420869, now seen corresponding path program 1 times [2023-12-18 23:23:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:02,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152500405] [2023-12-18 23:23:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:02,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152500405] [2023-12-18 23:23:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152500405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632576048] [2023-12-18 23:23:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:03,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:03,143 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:03,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 23:23:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:03,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:23:03,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:04,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632576048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:05,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 41 [2023-12-18 23:23:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679706534] [2023-12-18 23:23:05,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 23:23:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 23:23:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 23:23:05,661 INFO L87 Difference]: Start difference. First operand 32424 states and 40466 transitions. Second operand has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:23:18,667 INFO L93 Difference]: Finished difference Result 68826 states and 85140 transitions. [2023-12-18 23:23:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-18 23:23:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 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 [2023-12-18 23:23:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:23:18,723 INFO L225 Difference]: With dead ends: 68826 [2023-12-18 23:23:18,724 INFO L226 Difference]: Without dead ends: 53388 [2023-12-18 23:23:18,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4474 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2871, Invalid=12135, Unknown=0, NotChecked=0, Total=15006 [2023-12-18 23:23:18,743 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 27232 mSDsluCounter, 16868 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27232 SdHoareTripleChecker+Valid, 18417 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:23:18,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27232 Valid, 18417 Invalid, 2445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 23:23:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53388 states. [2023-12-18 23:23:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53388 to 36481. [2023-12-18 23:23:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36481 states, 36479 states have (on average 1.2441404643767646) internal successors, (45385), 36480 states have internal predecessors, (45385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36481 states to 36481 states and 45385 transitions. [2023-12-18 23:23:23,852 INFO L78 Accepts]: Start accepts. Automaton has 36481 states and 45385 transitions. Word has length 97 [2023-12-18 23:23:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:23,852 INFO L495 AbstractCegarLoop]: Abstraction has 36481 states and 45385 transitions. [2023-12-18 23:23:23,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 36481 states and 45385 transitions. [2023-12-18 23:23:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:23:23,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:23,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:23,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 23:23:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:24,059 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:24,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash -211799259, now seen corresponding path program 1 times [2023-12-18 23:23:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376398690] [2023-12-18 23:23:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:24,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:24,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376398690] [2023-12-18 23:23:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376398690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132956992] [2023-12-18 23:23:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:24,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:24,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:24,955 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:24,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 23:23:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:25,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-18 23:23:25,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:27,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132956992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:32,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 69 [2023-12-18 23:23:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489955801] [2023-12-18 23:23:32,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:32,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-18 23:23:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-18 23:23:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=4175, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 23:23:32,567 INFO L87 Difference]: Start difference. First operand 36481 states and 45385 transitions. Second operand has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:24:29,471 INFO L93 Difference]: Finished difference Result 66653 states and 82311 transitions. [2023-12-18 23:24:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2023-12-18 23:24:29,473 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 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 [2023-12-18 23:24:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:24:29,515 INFO L225 Difference]: With dead ends: 66653 [2023-12-18 23:24:29,515 INFO L226 Difference]: Without dead ends: 44371 [2023-12-18 23:24:29,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30265 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=12559, Invalid=71251, Unknown=0, NotChecked=0, Total=83810 [2023-12-18 23:24:29,532 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 23222 mSDsluCounter, 34776 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23222 SdHoareTripleChecker+Valid, 36329 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:24:29,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23222 Valid, 36329 Invalid, 3678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-18 23:24:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44371 states. [2023-12-18 23:24:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44371 to 28638. [2023-12-18 23:24:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28638 states, 28636 states have (on average 1.250663500488895) internal successors, (35814), 28637 states have internal predecessors, (35814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28638 states to 28638 states and 35814 transitions. [2023-12-18 23:24:33,740 INFO L78 Accepts]: Start accepts. Automaton has 28638 states and 35814 transitions. Word has length 98 [2023-12-18 23:24:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:24:33,740 INFO L495 AbstractCegarLoop]: Abstraction has 28638 states and 35814 transitions. [2023-12-18 23:24:33,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 28638 states and 35814 transitions. [2023-12-18 23:24:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:24:33,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:24:33,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:24:33,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 23:24:33,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:33,965 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:24:33,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:24:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -288723547, now seen corresponding path program 1 times [2023-12-18 23:24:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:24:33,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493947784] [2023-12-18 23:24:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:24:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:24:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493947784] [2023-12-18 23:24:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493947784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:24:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275796128] [2023-12-18 23:24:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:34,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:24:35,000 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:24:35,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 23:24:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:35,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-18 23:24:35,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:24:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:37,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:24:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275796128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:24:42,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:24:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 69 [2023-12-18 23:24:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124622243] [2023-12-18 23:24:42,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:24:42,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-18 23:24:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:24:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-18 23:24:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=4251, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 23:24:42,999 INFO L87 Difference]: Start difference. First operand 28638 states and 35814 transitions. Second operand has 69 states, 69 states have (on average 4.0) internal successors, (276), 69 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:27:51,064 INFO L93 Difference]: Finished difference Result 88653 states and 108752 transitions. [2023-12-18 23:27:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 482 states. [2023-12-18 23:27:51,065 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.0) internal successors, (276), 69 states have internal predecessors, (276), 0 states have call successors, (0), 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 [2023-12-18 23:27:51,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:27:51,146 INFO L225 Difference]: With dead ends: 88653 [2023-12-18 23:27:51,146 INFO L226 Difference]: Without dead ends: 79904 [2023-12-18 23:27:51,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 545 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138718 ImplicationChecksByTransitivity, 172.3s TimeCoverageRelationStatistics Valid=40750, Invalid=257912, Unknown=0, NotChecked=0, Total=298662 [2023-12-18 23:27:51,171 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 26253 mSDsluCounter, 36209 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26253 SdHoareTripleChecker+Valid, 37775 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:27:51,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26253 Valid, 37775 Invalid, 4491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [410 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-18 23:27:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79904 states. [2023-12-18 23:27:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79904 to 32308. [2023-12-18 23:27:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32308 states, 32306 states have (on average 1.247353432798861) internal successors, (40297), 32307 states have internal predecessors, (40297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32308 states to 32308 states and 40297 transitions. [2023-12-18 23:27:56,719 INFO L78 Accepts]: Start accepts. Automaton has 32308 states and 40297 transitions. Word has length 98 [2023-12-18 23:27:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:27:56,719 INFO L495 AbstractCegarLoop]: Abstraction has 32308 states and 40297 transitions. [2023-12-18 23:27:56,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.0) internal successors, (276), 69 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 32308 states and 40297 transitions. [2023-12-18 23:27:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:27:56,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:27:56,720 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:27:56,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 23:27:56,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:27:56,925 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:27:56,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:27:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1680940311, now seen corresponding path program 1 times [2023-12-18 23:27:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:27:56,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588394479] [2023-12-18 23:27:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:27:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:27:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:27:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 28 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:27:58,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:27:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588394479] [2023-12-18 23:27:58,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588394479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:27:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398555567] [2023-12-18 23:27:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:27:58,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:27:58,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:27:58,550 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:27:58,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-18 23:27:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:27:58,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 23:27:58,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:28:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 39 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:00,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:28:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398555567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:28:04,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:28:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 70 [2023-12-18 23:28:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228927444] [2023-12-18 23:28:04,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:28:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-18 23:28:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:28:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-18 23:28:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=4493, Unknown=0, NotChecked=0, Total=4830 [2023-12-18 23:28:04,778 INFO L87 Difference]: Start difference. First operand 32308 states and 40297 transitions. Second operand has 70 states, 70 states have (on average 3.742857142857143) internal successors, (262), 70 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:29:40,345 INFO L93 Difference]: Finished difference Result 55207 states and 67929 transitions. [2023-12-18 23:29:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2023-12-18 23:29:40,346 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.742857142857143) internal successors, (262), 70 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2023-12-18 23:29:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:29:40,380 INFO L225 Difference]: With dead ends: 55207 [2023-12-18 23:29:40,380 INFO L226 Difference]: Without dead ends: 41527 [2023-12-18 23:29:40,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 150 SyntacticMatches, 4 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36478 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=10931, Invalid=89875, Unknown=0, NotChecked=0, Total=100806 [2023-12-18 23:29:40,388 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 36628 mSDsluCounter, 36413 mSDsCounter, 0 mSdLazyCounter, 5235 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36628 SdHoareTripleChecker+Valid, 38002 SdHoareTripleChecker+Invalid, 5470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 5235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:29:40,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36628 Valid, 38002 Invalid, 5470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [235 Valid, 5235 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-18 23:29:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41527 states. [2023-12-18 23:29:46,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41527 to 32949. [2023-12-18 23:29:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32949 states, 32947 states have (on average 1.2471848726742951) internal successors, (41091), 32948 states have internal predecessors, (41091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32949 states to 32949 states and 41091 transitions. [2023-12-18 23:29:46,170 INFO L78 Accepts]: Start accepts. Automaton has 32949 states and 41091 transitions. Word has length 98 [2023-12-18 23:29:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:29:46,170 INFO L495 AbstractCegarLoop]: Abstraction has 32949 states and 41091 transitions. [2023-12-18 23:29:46,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.742857142857143) internal successors, (262), 70 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 32949 states and 41091 transitions. [2023-12-18 23:29:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:29:46,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:29:46,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:29:46,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-18 23:29:46,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-18 23:29:46,377 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:29:46,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:29:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1799178898, now seen corresponding path program 1 times [2023-12-18 23:29:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:29:46,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792762190] [2023-12-18 23:29:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:29:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:46,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:29:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792762190] [2023-12-18 23:29:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792762190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:29:46,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:29:46,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:29:46,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337120544] [2023-12-18 23:29:46,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:29:46,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:29:46,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:29:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:29:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:29:46,453 INFO L87 Difference]: Start difference. First operand 32949 states and 41091 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 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) Received shutdown request... [2023-12-18 23:29:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:29:47,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:29:47,028 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 324 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:29:47,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 75 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:29:47,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-18 23:29:47,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-18 23:29:47,030 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (32949states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1940 states constructed, input type IntersectNwa). [2023-12-18 23:29:47,031 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-18 23:29:47,034 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:29:47,034 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:29:47,038 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 23:29:47,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:29:47 BoogieIcfgContainer [2023-12-18 23:29:47,043 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 23:29:47,043 INFO L158 Benchmark]: Toolchain (without parser) took 844344.99ms. Allocated memory was 182.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 111.0MB in the beginning and 977.0MB in the end (delta: -866.0MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-18 23:29:47,047 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 182.5MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 23:29:47,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1749.64ms. Allocated memory was 182.5MB in the beginning and 306.2MB in the end (delta: 123.7MB). Free memory was 111.0MB in the beginning and 147.2MB in the end (delta: -36.2MB). Peak memory consumption was 88.0MB. Max. memory is 8.0GB. [2023-12-18 23:29:47,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 421.35ms. Allocated memory is still 306.2MB. Free memory was 147.2MB in the beginning and 221.6MB in the end (delta: -74.4MB). Peak memory consumption was 109.7MB. Max. memory is 8.0GB. [2023-12-18 23:29:47,049 INFO L158 Benchmark]: Boogie Preprocessor took 410.25ms. Allocated memory was 306.2MB in the beginning and 570.4MB in the end (delta: 264.2MB). Free memory was 221.6MB in the beginning and 459.3MB in the end (delta: -237.6MB). Peak memory consumption was 78.4MB. Max. memory is 8.0GB. [2023-12-18 23:29:47,049 INFO L158 Benchmark]: RCFGBuilder took 3084.04ms. Allocated memory was 570.4MB in the beginning and 749.7MB in the end (delta: 179.3MB). Free memory was 459.3MB in the beginning and 474.8MB in the end (delta: -15.5MB). Peak memory consumption was 185.3MB. Max. memory is 8.0GB. [2023-12-18 23:29:47,049 INFO L158 Benchmark]: TraceAbstraction took 838673.45ms. Allocated memory was 749.7MB in the beginning and 2.9GB in the end (delta: 2.1GB). Free memory was 474.3MB in the beginning and 977.0MB in the end (delta: -502.8MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-18 23:29:47,051 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 182.5MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1749.64ms. Allocated memory was 182.5MB in the beginning and 306.2MB in the end (delta: 123.7MB). Free memory was 111.0MB in the beginning and 147.2MB in the end (delta: -36.2MB). Peak memory consumption was 88.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 421.35ms. Allocated memory is still 306.2MB. Free memory was 147.2MB in the beginning and 221.6MB in the end (delta: -74.4MB). Peak memory consumption was 109.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 410.25ms. Allocated memory was 306.2MB in the beginning and 570.4MB in the end (delta: 264.2MB). Free memory was 221.6MB in the beginning and 459.3MB in the end (delta: -237.6MB). Peak memory consumption was 78.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3084.04ms. Allocated memory was 570.4MB in the beginning and 749.7MB in the end (delta: 179.3MB). Free memory was 459.3MB in the beginning and 474.8MB in the end (delta: -15.5MB). Peak memory consumption was 185.3MB. Max. memory is 8.0GB. * TraceAbstraction took 838673.45ms. Allocated memory was 749.7MB in the beginning and 2.9GB in the end (delta: 2.1GB). Free memory was 474.3MB in the beginning and 977.0MB in the end (delta: -502.8MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 395]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 395). Cancelled while NwaCegarLoop was constructing difference of abstraction (32949states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1940 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (32949states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1940 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 838.6s, OverallIterations: 37, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 698.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 459321 SdHoareTripleChecker+Valid, 52.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 459321 mSDsluCounter, 486860 SdHoareTripleChecker+Invalid, 47.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 433080 mSDsCounter, 3570 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47144 IncrementalHoareTripleChecker+Invalid, 50714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3570 mSolverCounterUnsat, 53780 mSDtfsCounter, 47144 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6313 GetRequests, 2807 SyntacticMatches, 15 SemanticMatches, 3491 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362604 ImplicationChecksByTransitivity, 614.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36481occurred in iteration=33, InterpolantAutomatonStates: 2690, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 41.5s AutomataMinimizationTime, 36 MinimizatonAttempts, 160067 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 91.0s InterpolantComputationTime, 4078 NumberOfCodeBlocks, 4078 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 5685 ConstructedInterpolants, 4 QuantifiedInterpolants, 131974 SizeOfPredicates, 190 NumberOfNonLiveVariables, 7672 ConjunctsInSsa, 605 ConjunctsInUnsatCore, 77 InterpolantComputations, 17 PerfectInterpolantSequences, 1509/3944 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown