/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:34:16,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:34:16,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:34:16,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:34:16,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:34:16,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:34:16,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:34:16,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:34:16,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:34:16,273 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:34:16,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:34:16,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:34:16,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:34:16,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:34:16,275 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:34:16,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:34:16,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:34:16,276 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:34:16,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:34:16,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:34:16,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:34:16,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:34:16,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:34:16,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:34:16,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:34:16,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:34:16,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:34:16,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:34:16,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:34:16,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:34:16,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:34:16,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:34:16,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:34:16,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:34:16,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:34:16,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:34:16,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:34:16,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:34:16,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:34:16,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:34:16,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:34:16,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:34:16,497 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:34:16,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-20 12:34:17,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:34:17,879 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:34:17,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-20 12:34:17,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cdc9cfd/92aa520ac5fb4923941843d461c2f7cd/FLAGd46291718 [2023-12-20 12:34:17,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cdc9cfd/92aa520ac5fb4923941843d461c2f7cd [2023-12-20 12:34:17,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:34:17,917 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:34:17,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:34:17,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:34:17,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:34:17,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:34:17" (1/1) ... [2023-12-20 12:34:17,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246bcb0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:17, skipping insertion in model container [2023-12-20 12:34:17,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:34:17" (1/1) ... [2023-12-20 12:34:18,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:34:18,290 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.UNBOUNDED.pals+Problem12_label03.c[6450,6463] [2023-12-20 12:34:18,330 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.UNBOUNDED.pals+Problem12_label03.c[8787,8800] [2023-12-20 12:34:18,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:34:18,835 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:34:18,864 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.UNBOUNDED.pals+Problem12_label03.c[6450,6463] [2023-12-20 12:34:18,866 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.UNBOUNDED.pals+Problem12_label03.c[8787,8800] [2023-12-20 12:34:19,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:34:19,179 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:34:19,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19 WrapperNode [2023-12-20 12:34:19,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:34:19,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:34:19,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:34:19,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:34:19,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,408 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-12-20 12:34:19,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:34:19,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:34:19,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:34:19,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:34:19,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,688 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 12:34:19,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:34:19,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:34:19,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:34:19,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:34:19,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (1/1) ... [2023-12-20 12:34:19,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:34:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:19,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 12:34:19,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 12:34:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:34:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:34:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:34:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:34:20,032 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:34:20,034 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:34:22,781 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:34:22,864 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:34:22,864 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:34:22,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:34:22 BoogieIcfgContainer [2023-12-20 12:34:22,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:34:22,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:34:22,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:34:22,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:34:22,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:34:17" (1/3) ... [2023-12-20 12:34:22,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bdfb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:34:22, skipping insertion in model container [2023-12-20 12:34:22,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:34:19" (2/3) ... [2023-12-20 12:34:22,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bdfb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:34:22, skipping insertion in model container [2023-12-20 12:34:22,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:34:22" (3/3) ... [2023-12-20 12:34:22,869 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-20 12:34:22,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:34:22,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:34:22,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:34:22,937 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;@634d6db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:34:22,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:34:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:34:22,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:22,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:22,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:22,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2106045877, now seen corresponding path program 1 times [2023-12-20 12:34:22,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:22,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294291364] [2023-12-20 12:34:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:22,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:23,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294291364] [2023-12-20 12:34:23,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294291364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:23,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:23,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:34:23,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653795944] [2023-12-20 12:34:23,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:23,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:34:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:34:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:34:23,104 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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) [2023-12-20 12:34:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:23,167 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-20 12:34:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:34:23,169 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 [2023-12-20 12:34:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:23,180 INFO L225 Difference]: With dead ends: 1597 [2023-12-20 12:34:23,180 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:34:23,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:34:23,187 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:23,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:34:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:34:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-20 12:34:23,234 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-12-20 12:34:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:23,234 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-20 12:34:23,235 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) [2023-12-20 12:34:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-20 12:34:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:34:23,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:23,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:23,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:34:23,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:23,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1602115405, now seen corresponding path program 1 times [2023-12-20 12:34:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641252631] [2023-12-20 12:34:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:23,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:23,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:23,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641252631] [2023-12-20 12:34:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641252631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:23,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:23,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:34:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767363784] [2023-12-20 12:34:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:23,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:34:23,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:34:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:34:23,389 INFO L87 Difference]: Start difference. First operand 805 states and 1524 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) [2023-12-20 12:34:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:23,428 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-12-20 12:34:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:34:23,428 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 [2023-12-20 12:34:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:23,431 INFO L225 Difference]: With dead ends: 839 [2023-12-20 12:34:23,431 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:34:23,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:34:23,433 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:23,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:34:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:34:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-12-20 12:34:23,447 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-12-20 12:34:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:23,447 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-12-20 12:34:23,447 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) [2023-12-20 12:34:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-12-20 12:34:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 12:34:23,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:23,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:34:23,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:23,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2003021176, now seen corresponding path program 1 times [2023-12-20 12:34:23,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:23,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568345833] [2023-12-20 12:34:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:23,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:23,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:23,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568345833] [2023-12-20 12:34:23,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568345833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:23,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:23,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:34:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617928069] [2023-12-20 12:34:23,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:23,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:23,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:23,483 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:26,245 INFO L93 Difference]: Finished difference Result 2309 states and 4381 transitions. [2023-12-20 12:34:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:26,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 12:34:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:26,250 INFO L225 Difference]: With dead ends: 2309 [2023-12-20 12:34:26,251 INFO L226 Difference]: Without dead ends: 1556 [2023-12-20 12:34:26,252 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 [2023-12-20 12:34:26,253 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 919 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 181 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 [2023-12-20 12:34:26,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 181 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 12:34:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-20 12:34:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-20 12:34:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.832046332046332) internal successors, (2847), 1555 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2847 transitions. [2023-12-20 12:34:26,274 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2847 transitions. Word has length 19 [2023-12-20 12:34:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:26,274 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2847 transitions. [2023-12-20 12:34:26,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2847 transitions. [2023-12-20 12:34:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:34:26,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:26,275 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] [2023-12-20 12:34:26,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:34:26,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:26,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1530211809, now seen corresponding path program 1 times [2023-12-20 12:34:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279403136] [2023-12-20 12:34:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:26,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:26,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:26,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279403136] [2023-12-20 12:34:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279403136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:26,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:34:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305465984] [2023-12-20 12:34:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:34:26,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:34:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:34:26,346 INFO L87 Difference]: Start difference. First operand 1556 states and 2847 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) [2023-12-20 12:34:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:26,421 INFO L93 Difference]: Finished difference Result 1742 states and 3141 transitions. [2023-12-20 12:34:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:34:26,422 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 [2023-12-20 12:34:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:26,426 INFO L225 Difference]: With dead ends: 1742 [2023-12-20 12:34:26,426 INFO L226 Difference]: Without dead ends: 1711 [2023-12-20 12:34:26,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:34:26,428 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:26,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-20 12:34:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1585. [2023-12-20 12:34:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.8275426405559065) internal successors, (2893), 1584 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2893 transitions. [2023-12-20 12:34:26,446 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2893 transitions. Word has length 32 [2023-12-20 12:34:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:26,446 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2893 transitions. [2023-12-20 12:34:26,446 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) [2023-12-20 12:34:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2893 transitions. [2023-12-20 12:34:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:34:26,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:26,447 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] [2023-12-20 12:34:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:34:26,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1777423345, now seen corresponding path program 1 times [2023-12-20 12:34:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002313267] [2023-12-20 12:34:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002313267] [2023-12-20 12:34:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002313267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:26,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135817799] [2023-12-20 12:34:26,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:26,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:26,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:26,484 INFO L87 Difference]: Start difference. First operand 1585 states and 2893 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) [2023-12-20 12:34:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:26,512 INFO L93 Difference]: Finished difference Result 1694 states and 3064 transitions. [2023-12-20 12:34:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:26,512 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 [2023-12-20 12:34:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:26,516 INFO L225 Difference]: With dead ends: 1694 [2023-12-20 12:34:26,516 INFO L226 Difference]: Without dead ends: 1634 [2023-12-20 12:34:26,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:26,518 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-12-20 12:34:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1630. [2023-12-20 12:34:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8187960687960687) internal successors, (2961), 1629 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2961 transitions. [2023-12-20 12:34:26,537 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2961 transitions. Word has length 34 [2023-12-20 12:34:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:26,537 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2961 transitions. [2023-12-20 12:34:26,537 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) [2023-12-20 12:34:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2961 transitions. [2023-12-20 12:34:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:34:26,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:26,538 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] [2023-12-20 12:34:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:34:26,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:26,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1775278393, now seen corresponding path program 1 times [2023-12-20 12:34:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375732170] [2023-12-20 12:34:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375732170] [2023-12-20 12:34:26,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375732170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:26,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:26,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:34:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803763816] [2023-12-20 12:34:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:26,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:34:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:34:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:34:26,616 INFO L87 Difference]: Start difference. First operand 1630 states and 2961 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) [2023-12-20 12:34:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:26,666 INFO L93 Difference]: Finished difference Result 1737 states and 3125 transitions. [2023-12-20 12:34:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:34:26,667 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 [2023-12-20 12:34:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:26,671 INFO L225 Difference]: With dead ends: 1737 [2023-12-20 12:34:26,671 INFO L226 Difference]: Without dead ends: 1632 [2023-12-20 12:34:26,671 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 [2023-12-20 12:34:26,672 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:26,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-20 12:34:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-12-20 12:34:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8175675675675675) internal successors, (2959), 1629 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2959 transitions. [2023-12-20 12:34:26,691 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2959 transitions. Word has length 34 [2023-12-20 12:34:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:26,691 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2959 transitions. [2023-12-20 12:34:26,691 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) [2023-12-20 12:34:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2959 transitions. [2023-12-20 12:34:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:34:26,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:26,692 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] [2023-12-20 12:34:26,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:34:26,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:26,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash 672589841, now seen corresponding path program 1 times [2023-12-20 12:34:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:26,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358423204] [2023-12-20 12:34:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:26,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358423204] [2023-12-20 12:34:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358423204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:34:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278017156] [2023-12-20 12:34:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:34:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:34:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:34:26,781 INFO L87 Difference]: Start difference. First operand 1630 states and 2959 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) [2023-12-20 12:34:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:26,828 INFO L93 Difference]: Finished difference Result 1638 states and 2968 transitions. [2023-12-20 12:34:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:34:26,829 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 [2023-12-20 12:34:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:26,833 INFO L225 Difference]: With dead ends: 1638 [2023-12-20 12:34:26,833 INFO L226 Difference]: Without dead ends: 1636 [2023-12-20 12:34:26,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:34:26,834 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 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 [2023-12-20 12:34:26,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-20 12:34:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2023-12-20 12:34:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8149509803921569) internal successors, (2962), 1633 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2962 transitions. [2023-12-20 12:34:26,854 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2962 transitions. Word has length 35 [2023-12-20 12:34:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:26,854 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2962 transitions. [2023-12-20 12:34:26,854 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) [2023-12-20 12:34:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2962 transitions. [2023-12-20 12:34:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:34:26,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:26,855 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] [2023-12-20 12:34:26,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:34:26,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:26,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1662874585, now seen corresponding path program 1 times [2023-12-20 12:34:26,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:26,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161885469] [2023-12-20 12:34:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161885469] [2023-12-20 12:34:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161885469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358392734] [2023-12-20 12:34:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:26,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:26,879 INFO L87 Difference]: Start difference. First operand 1634 states and 2962 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) [2023-12-20 12:34:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:26,904 INFO L93 Difference]: Finished difference Result 1836 states and 3262 transitions. [2023-12-20 12:34:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:26,905 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 [2023-12-20 12:34:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:26,910 INFO L225 Difference]: With dead ends: 1836 [2023-12-20 12:34:26,910 INFO L226 Difference]: Without dead ends: 1727 [2023-12-20 12:34:26,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:26,911 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:26,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-12-20 12:34:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1725. [2023-12-20 12:34:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1723 states have (on average 1.7951247823563552) internal successors, (3093), 1724 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 3093 transitions. [2023-12-20 12:34:26,938 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 3093 transitions. Word has length 36 [2023-12-20 12:34:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:26,938 INFO L495 AbstractCegarLoop]: Abstraction has 1725 states and 3093 transitions. [2023-12-20 12:34:26,938 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) [2023-12-20 12:34:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 3093 transitions. [2023-12-20 12:34:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:34:26,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:26,939 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] [2023-12-20 12:34:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:34:26,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:26,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1743359271, now seen corresponding path program 1 times [2023-12-20 12:34:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:26,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918282317] [2023-12-20 12:34:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:26,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918282317] [2023-12-20 12:34:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918282317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:27,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303884910] [2023-12-20 12:34:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:27,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:27,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:27,031 INFO L87 Difference]: Start difference. First operand 1725 states and 3093 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) [2023-12-20 12:34:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:27,058 INFO L93 Difference]: Finished difference Result 2093 states and 3627 transitions. [2023-12-20 12:34:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:27,059 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 [2023-12-20 12:34:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:27,064 INFO L225 Difference]: With dead ends: 2093 [2023-12-20 12:34:27,064 INFO L226 Difference]: Without dead ends: 1893 [2023-12-20 12:34:27,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:27,065 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:27,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-20 12:34:27,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1891. [2023-12-20 12:34:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 1.7591318157755427) internal successors, (3323), 1890 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 3323 transitions. [2023-12-20 12:34:27,094 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 3323 transitions. Word has length 36 [2023-12-20 12:34:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:27,095 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 3323 transitions. [2023-12-20 12:34:27,095 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) [2023-12-20 12:34:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 3323 transitions. [2023-12-20 12:34:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 12:34:27,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:27,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:34:27,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:27,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1790191284, now seen corresponding path program 1 times [2023-12-20 12:34:27,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:27,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383613739] [2023-12-20 12:34:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:27,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:27,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383613739] [2023-12-20 12:34:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383613739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:27,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476439419] [2023-12-20 12:34:27,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:27,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:27,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:27,123 INFO L87 Difference]: Start difference. First operand 1891 states and 3323 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:27,152 INFO L93 Difference]: Finished difference Result 2282 states and 3897 transitions. [2023-12-20 12:34:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 12:34:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:27,158 INFO L225 Difference]: With dead ends: 2282 [2023-12-20 12:34:27,158 INFO L226 Difference]: Without dead ends: 2063 [2023-12-20 12:34:27,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:27,159 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 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 [2023-12-20 12:34:27,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-20 12:34:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2061. [2023-12-20 12:34:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2059 states have (on average 1.7294803302574064) internal successors, (3561), 2060 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3561 transitions. [2023-12-20 12:34:27,190 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3561 transitions. Word has length 38 [2023-12-20 12:34:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:27,191 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3561 transitions. [2023-12-20 12:34:27,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3561 transitions. [2023-12-20 12:34:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:34:27,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:27,192 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] [2023-12-20 12:34:27,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:34:27,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:27,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1496014032, now seen corresponding path program 1 times [2023-12-20 12:34:27,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:27,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434867098] [2023-12-20 12:34:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:27,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:34:27,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434867098] [2023-12-20 12:34:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434867098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:27,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:27,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:34:27,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188092104] [2023-12-20 12:34:27,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:27,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:34:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:34:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:34:27,256 INFO L87 Difference]: Start difference. First operand 2061 states and 3561 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) [2023-12-20 12:34:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:27,344 INFO L93 Difference]: Finished difference Result 3785 states and 6009 transitions. [2023-12-20 12:34:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:34:27,345 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 [2023-12-20 12:34:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:27,353 INFO L225 Difference]: With dead ends: 3785 [2023-12-20 12:34:27,353 INFO L226 Difference]: Without dead ends: 3251 [2023-12-20 12:34:27,354 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 [2023-12-20 12:34:27,354 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:27,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2023-12-20 12:34:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2593. [2023-12-20 12:34:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2591 states have (on average 1.6630644538788113) internal successors, (4309), 2592 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 4309 transitions. [2023-12-20 12:34:27,404 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 4309 transitions. Word has length 50 [2023-12-20 12:34:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:27,404 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 4309 transitions. [2023-12-20 12:34:27,404 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) [2023-12-20 12:34:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 4309 transitions. [2023-12-20 12:34:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:34:27,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:27,405 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] [2023-12-20 12:34:27,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:34:27,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:27,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1910219824, now seen corresponding path program 1 times [2023-12-20 12:34:27,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965001604] [2023-12-20 12:34:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:34:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965001604] [2023-12-20 12:34:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965001604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:27,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:34:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141384820] [2023-12-20 12:34:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:34:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:34:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:34:27,485 INFO L87 Difference]: Start difference. First operand 2593 states and 4309 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) [2023-12-20 12:34:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:27,577 INFO L93 Difference]: Finished difference Result 4317 states and 6757 transitions. [2023-12-20 12:34:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:34:27,577 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 [2023-12-20 12:34:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:27,586 INFO L225 Difference]: With dead ends: 4317 [2023-12-20 12:34:27,586 INFO L226 Difference]: Without dead ends: 3783 [2023-12-20 12:34:27,588 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 [2023-12-20 12:34:27,588 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3047 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:27,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3142 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2023-12-20 12:34:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3393. [2023-12-20 12:34:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3391 states have (on average 1.5986434680035388) internal successors, (5421), 3392 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 5421 transitions. [2023-12-20 12:34:27,659 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 5421 transitions. Word has length 50 [2023-12-20 12:34:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:27,659 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 5421 transitions. [2023-12-20 12:34:27,659 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) [2023-12-20 12:34:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 5421 transitions. [2023-12-20 12:34:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:34:27,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:27,660 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] [2023-12-20 12:34:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:34:27,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:27,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1024014232, now seen corresponding path program 1 times [2023-12-20 12:34:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576767072] [2023-12-20 12:34:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:27,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:27,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:27,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576767072] [2023-12-20 12:34:27,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576767072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:27,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:27,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:27,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682617877] [2023-12-20 12:34:27,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:27,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:27,712 INFO L87 Difference]: Start difference. First operand 3393 states and 5421 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:27,758 INFO L93 Difference]: Finished difference Result 4756 states and 7371 transitions. [2023-12-20 12:34:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:34:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:27,763 INFO L225 Difference]: With dead ends: 4756 [2023-12-20 12:34:27,763 INFO L226 Difference]: Without dead ends: 2890 [2023-12-20 12:34:27,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:27,765 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:27,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2023-12-20 12:34:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2023-12-20 12:34:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2886 states have (on average 1.6354816354816355) internal successors, (4720), 2887 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4720 transitions. [2023-12-20 12:34:27,818 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4720 transitions. Word has length 52 [2023-12-20 12:34:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:27,819 INFO L495 AbstractCegarLoop]: Abstraction has 2888 states and 4720 transitions. [2023-12-20 12:34:27,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4720 transitions. [2023-12-20 12:34:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:34:27,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:27,819 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] [2023-12-20 12:34:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:34:27,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:27,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash -350989803, now seen corresponding path program 1 times [2023-12-20 12:34:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891242964] [2023-12-20 12:34:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:34:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891242964] [2023-12-20 12:34:27,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891242964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:27,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:27,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:34:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608952689] [2023-12-20 12:34:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:27,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:34:27,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:34:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:34:27,878 INFO L87 Difference]: Start difference. First operand 2888 states and 4720 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:27,967 INFO L93 Difference]: Finished difference Result 4048 states and 6380 transitions. [2023-12-20 12:34:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:34:27,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 52 [2023-12-20 12:34:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:27,973 INFO L225 Difference]: With dead ends: 4048 [2023-12-20 12:34:27,973 INFO L226 Difference]: Without dead ends: 3662 [2023-12-20 12:34:27,975 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 [2023-12-20 12:34:27,975 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3045 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:27,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 3130 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2023-12-20 12:34:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3272. [2023-12-20 12:34:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 1.6097859327217126) internal successors, (5264), 3271 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5264 transitions. [2023-12-20 12:34:28,106 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5264 transitions. Word has length 52 [2023-12-20 12:34:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:28,106 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 5264 transitions. [2023-12-20 12:34:28,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5264 transitions. [2023-12-20 12:34:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:34:28,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:28,107 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, 1, 1] [2023-12-20 12:34:28,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:34:28,107 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:28,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1851821966, now seen corresponding path program 1 times [2023-12-20 12:34:28,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295464269] [2023-12-20 12:34:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:28,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:28,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295464269] [2023-12-20 12:34:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295464269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:28,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:28,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:28,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67722683] [2023-12-20 12:34:28,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:28,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:28,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:28,148 INFO L87 Difference]: Start difference. First operand 3272 states and 5264 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:28,180 INFO L93 Difference]: Finished difference Result 4140 states and 6490 transitions. [2023-12-20 12:34:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 12:34:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:28,184 INFO L225 Difference]: With dead ends: 4140 [2023-12-20 12:34:28,184 INFO L226 Difference]: Without dead ends: 2410 [2023-12-20 12:34:28,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:28,186 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:28,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2023-12-20 12:34:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2408. [2023-12-20 12:34:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2406 states have (on average 1.6716541978387365) internal successors, (4022), 2407 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4022 transitions. [2023-12-20 12:34:28,215 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4022 transitions. Word has length 53 [2023-12-20 12:34:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:28,216 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 4022 transitions. [2023-12-20 12:34:28,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4022 transitions. [2023-12-20 12:34:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:34:28,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:28,216 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] [2023-12-20 12:34:28,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:34:28,216 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:28,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash -232466016, now seen corresponding path program 1 times [2023-12-20 12:34:28,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:28,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950714273] [2023-12-20 12:34:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:28,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:28,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950714273] [2023-12-20 12:34:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950714273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:28,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543418654] [2023-12-20 12:34:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:28,257 INFO L87 Difference]: Start difference. First operand 2408 states and 4022 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:28,286 INFO L93 Difference]: Finished difference Result 2844 states and 4627 transitions. [2023-12-20 12:34:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:34:28,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-20 12:34:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:28,289 INFO L225 Difference]: With dead ends: 2844 [2023-12-20 12:34:28,289 INFO L226 Difference]: Without dead ends: 1978 [2023-12-20 12:34:28,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:28,291 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:28,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:34:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-12-20 12:34:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2023-12-20 12:34:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1974 states have (on average 1.7274569402228976) internal successors, (3410), 1975 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 3410 transitions. [2023-12-20 12:34:28,314 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 3410 transitions. Word has length 55 [2023-12-20 12:34:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:28,314 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 3410 transitions. [2023-12-20 12:34:28,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 3410 transitions. [2023-12-20 12:34:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:34:28,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:28,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 12:34:28,315 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:28,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1088629682, now seen corresponding path program 1 times [2023-12-20 12:34:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748819091] [2023-12-20 12:34:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748819091] [2023-12-20 12:34:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748819091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811100490] [2023-12-20 12:34:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:30,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:30,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:34:30,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:34:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:30,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 12:34:30,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:34:30,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:34:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811100490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:30,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:30,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:34:30,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862355048] [2023-12-20 12:34:30,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:30,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:34:30,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:34:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:34:30,638 INFO L87 Difference]: Start difference. First operand 1976 states and 3410 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:33,143 INFO L93 Difference]: Finished difference Result 4219 states and 6358 transitions. [2023-12-20 12:34:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 12:34:33,143 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 [2023-12-20 12:34:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:33,149 INFO L225 Difference]: With dead ends: 4219 [2023-12-20 12:34:33,149 INFO L226 Difference]: Without dead ends: 3785 [2023-12-20 12:34:33,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:34:33,151 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 18498 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18498 SdHoareTripleChecker+Valid, 6207 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:33,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18498 Valid, 6207 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:34:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2023-12-20 12:34:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3597. [2023-12-20 12:34:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3595 states have (on average 1.5107093184979137) internal successors, (5431), 3596 states have internal predecessors, (5431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5431 transitions. [2023-12-20 12:34:33,243 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5431 transitions. Word has length 57 [2023-12-20 12:34:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:33,244 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 5431 transitions. [2023-12-20 12:34:33,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5431 transitions. [2023-12-20 12:34:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:34:33,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:33,246 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] [2023-12-20 12:34:33,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 12:34:33,451 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 [2023-12-20 12:34:33,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1913066465, now seen corresponding path program 1 times [2023-12-20 12:34:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408733002] [2023-12-20 12:34:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:33,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408733002] [2023-12-20 12:34:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408733002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763343714] [2023-12-20 12:34:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:34,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:34,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:34:34,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:34:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:34,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:34:34,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:34,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:35,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763343714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:35,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:35,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-20 12:34:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068378147] [2023-12-20 12:34:35,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:35,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:34:35,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:34:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:34:35,575 INFO L87 Difference]: Start difference. First operand 3597 states and 5431 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:36,369 INFO L93 Difference]: Finished difference Result 7715 states and 10621 transitions. [2023-12-20 12:34:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 12:34:36,369 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 58 [2023-12-20 12:34:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:36,377 INFO L225 Difference]: With dead ends: 7715 [2023-12-20 12:34:36,377 INFO L226 Difference]: Without dead ends: 5937 [2023-12-20 12:34:36,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:34:36,380 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 7671 mSDsluCounter, 7836 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7671 SdHoareTripleChecker+Valid, 9329 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:36,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7671 Valid, 9329 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:34:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2023-12-20 12:34:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5551. [2023-12-20 12:34:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5549 states have (on average 1.4119661200216256) internal successors, (7835), 5550 states have internal predecessors, (7835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 7835 transitions. [2023-12-20 12:34:36,504 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 7835 transitions. Word has length 58 [2023-12-20 12:34:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:36,504 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 7835 transitions. [2023-12-20 12:34:36,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 7835 transitions. [2023-12-20 12:34:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:34:36,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:36,506 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, 1] [2023-12-20 12:34:36,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:34:36,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 12:34:36,711 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:36,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1390462255, now seen corresponding path program 1 times [2023-12-20 12:34:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:36,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16834767] [2023-12-20 12:34:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:36,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:36,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16834767] [2023-12-20 12:34:36,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16834767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:36,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818879643] [2023-12-20 12:34:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:36,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:36,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:34:36,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:34:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:36,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:34:36,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:37,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:37,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818879643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:37,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:37,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:34:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818030960] [2023-12-20 12:34:37,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:37,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:34:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:34:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:34:37,876 INFO L87 Difference]: Start difference. First operand 5551 states and 7835 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:38,484 INFO L93 Difference]: Finished difference Result 12512 states and 16531 transitions. [2023-12-20 12:34:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:34:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 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 58 [2023-12-20 12:34:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:38,497 INFO L225 Difference]: With dead ends: 12512 [2023-12-20 12:34:38,497 INFO L226 Difference]: Without dead ends: 9090 [2023-12-20 12:34:38,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:34:38,503 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 13483 mSDsluCounter, 7648 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13483 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:38,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13483 Valid, 9140 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:34:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2023-12-20 12:34:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 8852. [2023-12-20 12:34:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 8850 states have (on average 1.348361581920904) internal successors, (11933), 8851 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 11933 transitions. [2023-12-20 12:34:38,729 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 11933 transitions. Word has length 58 [2023-12-20 12:34:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 8852 states and 11933 transitions. [2023-12-20 12:34:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 11933 transitions. [2023-12-20 12:34:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:34:38,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:38,730 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, 1] [2023-12-20 12:34:38,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 12:34:38,935 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 [2023-12-20 12:34:38,936 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:38,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash -578947025, now seen corresponding path program 1 times [2023-12-20 12:34:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:38,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171178736] [2023-12-20 12:34:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:39,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:39,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171178736] [2023-12-20 12:34:39,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171178736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:39,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314079925] [2023-12-20 12:34:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:39,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:39,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:39,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:34:39,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:34:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:39,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:34:39,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:39,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314079925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:40,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:40,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 12:34:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967879258] [2023-12-20 12:34:40,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:34:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:34:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:34:40,315 INFO L87 Difference]: Start difference. First operand 8852 states and 11933 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:41,083 INFO L93 Difference]: Finished difference Result 15747 states and 20541 transitions. [2023-12-20 12:34:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:34:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 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 58 [2023-12-20 12:34:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:41,124 INFO L225 Difference]: With dead ends: 15747 [2023-12-20 12:34:41,125 INFO L226 Difference]: Without dead ends: 9546 [2023-12-20 12:34:41,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:34:41,139 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 6219 mSDsluCounter, 4738 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6219 SdHoareTripleChecker+Valid, 6238 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:41,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6219 Valid, 6238 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:34:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-12-20 12:34:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 8964. [2023-12-20 12:34:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8962 states have (on average 1.336085695157331) internal successors, (11974), 8963 states have internal predecessors, (11974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 11974 transitions. [2023-12-20 12:34:41,423 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 11974 transitions. Word has length 58 [2023-12-20 12:34:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:41,423 INFO L495 AbstractCegarLoop]: Abstraction has 8964 states and 11974 transitions. [2023-12-20 12:34:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 11974 transitions. [2023-12-20 12:34:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:34:41,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:41,424 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, 1, 1] [2023-12-20 12:34:41,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 12:34:41,629 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 [2023-12-20 12:34:41,629 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:41,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash -439807828, now seen corresponding path program 1 times [2023-12-20 12:34:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:41,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814382323] [2023-12-20 12:34:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814382323] [2023-12-20 12:34:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814382323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333350969] [2023-12-20 12:34:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:42,192 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) [2023-12-20 12:34:42,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:34:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:42,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 12:34:42,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:42,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:43,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333350969] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:43,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:43,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-20 12:34:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271611738] [2023-12-20 12:34:43,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 12:34:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 12:34:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 12:34:43,546 INFO L87 Difference]: Start difference. First operand 8964 states and 11974 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:48,508 INFO L93 Difference]: Finished difference Result 15824 states and 20459 transitions. [2023-12-20 12:34:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-20 12:34:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 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 [2023-12-20 12:34:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:48,519 INFO L225 Difference]: With dead ends: 15824 [2023-12-20 12:34:48,519 INFO L226 Difference]: Without dead ends: 11056 [2023-12-20 12:34:48,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 12:34:48,525 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 10622 mSDsluCounter, 21423 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10622 SdHoareTripleChecker+Valid, 22936 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:48,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10622 Valid, 22936 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 12:34:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2023-12-20 12:34:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 6362. [2023-12-20 12:34:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6360 states have (on average 1.375314465408805) internal successors, (8747), 6361 states have internal predecessors, (8747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8747 transitions. [2023-12-20 12:34:48,703 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8747 transitions. Word has length 59 [2023-12-20 12:34:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:48,703 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 8747 transitions. [2023-12-20 12:34:48,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8747 transitions. [2023-12-20 12:34:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 12:34:48,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:48,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:48,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 12:34:48,908 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 [2023-12-20 12:34:48,908 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:48,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash 521135761, now seen corresponding path program 1 times [2023-12-20 12:34:48,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:48,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288816325] [2023-12-20 12:34:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:48,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288816325] [2023-12-20 12:34:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288816325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647334767] [2023-12-20 12:34:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:49,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:49,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:49,454 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) [2023-12-20 12:34:49,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:34:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:49,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 12:34:49,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:50,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647334767] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:50,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-20 12:34:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201115118] [2023-12-20 12:34:50,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:50,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 12:34:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 12:34:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-20 12:34:50,897 INFO L87 Difference]: Start difference. First operand 6362 states and 8747 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:52,177 INFO L93 Difference]: Finished difference Result 7692 states and 10391 transitions. [2023-12-20 12:34:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 12:34:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 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 60 [2023-12-20 12:34:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:52,183 INFO L225 Difference]: With dead ends: 7692 [2023-12-20 12:34:52,183 INFO L226 Difference]: Without dead ends: 5088 [2023-12-20 12:34:52,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:34:52,187 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 11127 mSDsluCounter, 17854 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11127 SdHoareTripleChecker+Valid, 19347 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:52,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11127 Valid, 19347 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:34:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2023-12-20 12:34:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 4984. [2023-12-20 12:34:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4982 states have (on average 1.414090726615817) internal successors, (7045), 4983 states have internal predecessors, (7045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7045 transitions. [2023-12-20 12:34:52,320 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7045 transitions. Word has length 60 [2023-12-20 12:34:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:52,320 INFO L495 AbstractCegarLoop]: Abstraction has 4984 states and 7045 transitions. [2023-12-20 12:34:52,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:52,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7045 transitions. [2023-12-20 12:34:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 12:34:52,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:52,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:52,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:34:52,526 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 [2023-12-20 12:34:52,526 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:52,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1835118788, now seen corresponding path program 1 times [2023-12-20 12:34:52,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:52,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130226254] [2023-12-20 12:34:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:52,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:52,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:52,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130226254] [2023-12-20 12:34:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130226254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:52,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:52,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:34:52,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569621218] [2023-12-20 12:34:52,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:52,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:34:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:52,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:34:52,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:34:52,691 INFO L87 Difference]: Start difference. First operand 4984 states and 7045 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:57,366 INFO L93 Difference]: Finished difference Result 8741 states and 13935 transitions. [2023-12-20 12:34:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:34:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-20 12:34:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:57,374 INFO L225 Difference]: With dead ends: 8741 [2023-12-20 12:34:57,374 INFO L226 Difference]: Without dead ends: 7237 [2023-12-20 12:34:57,376 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 [2023-12-20 12:34:57,377 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 2298 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 5946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:57,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2298 Valid, 780 Invalid, 5946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 12:34:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2023-12-20 12:34:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7237. [2023-12-20 12:34:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7237 states, 7235 states have (on average 1.331582584657913) internal successors, (9634), 7236 states have internal predecessors, (9634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 9634 transitions. [2023-12-20 12:34:57,541 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 9634 transitions. Word has length 88 [2023-12-20 12:34:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:57,541 INFO L495 AbstractCegarLoop]: Abstraction has 7237 states and 9634 transitions. [2023-12-20 12:34:57,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 9634 transitions. [2023-12-20 12:34:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 12:34:57,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:57,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:57,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 12:34:57,543 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:57,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:57,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1450354761, now seen corresponding path program 1 times [2023-12-20 12:34:57,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:57,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384524605] [2023-12-20 12:34:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:57,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 12:34:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:57,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384524605] [2023-12-20 12:34:57,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384524605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:34:57,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:34:57,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:34:57,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090580523] [2023-12-20 12:34:57,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:34:57,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:34:57,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:57,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:34:57,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:34:57,587 INFO L87 Difference]: Start difference. First operand 7237 states and 9634 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:35:00,259 INFO L93 Difference]: Finished difference Result 11745 states and 17017 transitions. [2023-12-20 12:35:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:35:00,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 12:35:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:35:00,268 INFO L225 Difference]: With dead ends: 11745 [2023-12-20 12:35:00,268 INFO L226 Difference]: Without dead ends: 8739 [2023-12-20 12:35:00,271 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 [2023-12-20 12:35:00,273 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:35:00,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 540 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:35:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2023-12-20 12:35:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 8739. [2023-12-20 12:35:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8739 states, 8737 states have (on average 1.3226507954675517) internal successors, (11556), 8738 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 11556 transitions. [2023-12-20 12:35:00,493 INFO L78 Accepts]: Start accepts. Automaton has 8739 states and 11556 transitions. Word has length 90 [2023-12-20 12:35:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:35:00,493 INFO L495 AbstractCegarLoop]: Abstraction has 8739 states and 11556 transitions. [2023-12-20 12:35:00,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8739 states and 11556 transitions. [2023-12-20 12:35:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:35:00,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:35:00,495 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, 1, 1] [2023-12-20 12:35:00,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 12:35:00,495 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:35:00,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:35:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash -452363845, now seen corresponding path program 1 times [2023-12-20 12:35:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:35:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383439398] [2023-12-20 12:35:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:35:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:01,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:35:01,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383439398] [2023-12-20 12:35:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383439398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:35:01,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359897226] [2023-12-20 12:35:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:01,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:35:01,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:35:01,090 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) [2023-12-20 12:35:01,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:35:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:01,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:35:01,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:35:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:01,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:35:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:03,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359897226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:35:03,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:35:03,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 12:35:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39560072] [2023-12-20 12:35:03,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:35:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 12:35:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:35:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 12:35:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 12:35:03,015 INFO L87 Difference]: Start difference. First operand 8739 states and 11556 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 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) [2023-12-20 12:35:13,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:35:13,776 INFO L93 Difference]: Finished difference Result 15967 states and 20586 transitions. [2023-12-20 12:35:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:35:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 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 97 [2023-12-20 12:35:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:35:13,788 INFO L225 Difference]: With dead ends: 15967 [2023-12-20 12:35:13,788 INFO L226 Difference]: Without dead ends: 13281 [2023-12-20 12:35:13,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4645, Invalid=27575, Unknown=0, NotChecked=0, Total=32220 [2023-12-20 12:35:13,798 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 24041 mSDsluCounter, 16022 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24041 SdHoareTripleChecker+Valid, 17563 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:35:13,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24041 Valid, 17563 Invalid, 1870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:35:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2023-12-20 12:35:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 10985. [2023-12-20 12:35:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10985 states, 10983 states have (on average 1.3020122006737687) internal successors, (14300), 10984 states have internal predecessors, (14300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10985 states to 10985 states and 14300 transitions. [2023-12-20 12:35:14,192 INFO L78 Accepts]: Start accepts. Automaton has 10985 states and 14300 transitions. Word has length 97 [2023-12-20 12:35:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:35:14,193 INFO L495 AbstractCegarLoop]: Abstraction has 10985 states and 14300 transitions. [2023-12-20 12:35:14,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 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) [2023-12-20 12:35:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 10985 states and 14300 transitions. [2023-12-20 12:35:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:35:14,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:35:14,194 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, 1, 1, 1] [2023-12-20 12:35:14,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 12:35:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:35:14,399 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:35:14,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:35:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1863416823, now seen corresponding path program 1 times [2023-12-20 12:35:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:35:14,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920623990] [2023-12-20 12:35:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:35:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:35:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920623990] [2023-12-20 12:35:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920623990] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:35:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792699252] [2023-12-20 12:35:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:14,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:35:14,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:35:14,937 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) [2023-12-20 12:35:14,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:35:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:15,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 12:35:15,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:35:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:17,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:35:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792699252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:35:25,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:35:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 60 [2023-12-20 12:35:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245185497] [2023-12-20 12:35:25,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:35:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:35:25,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:35:25,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:35:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:35:25,349 INFO L87 Difference]: Start difference. First operand 10985 states and 14300 transitions. Second operand has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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) [2023-12-20 12:35:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:35:57,936 INFO L93 Difference]: Finished difference Result 24766 states and 31178 transitions. [2023-12-20 12:35:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2023-12-20 12:35:57,936 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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 97 [2023-12-20 12:35:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:35:57,955 INFO L225 Difference]: With dead ends: 24766 [2023-12-20 12:35:57,955 INFO L226 Difference]: Without dead ends: 20707 [2023-12-20 12:35:57,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58781 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=17856, Invalid=124650, Unknown=0, NotChecked=0, Total=142506 [2023-12-20 12:35:57,968 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 36345 mSDsluCounter, 30577 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36345 SdHoareTripleChecker+Valid, 32170 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:35:57,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36345 Valid, 32170 Invalid, 3920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [390 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 12:35:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2023-12-20 12:35:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 11914. [2023-12-20 12:35:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11914 states, 11912 states have (on average 1.2890362659503023) internal successors, (15355), 11913 states have internal predecessors, (15355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11914 states to 11914 states and 15355 transitions. [2023-12-20 12:35:58,489 INFO L78 Accepts]: Start accepts. Automaton has 11914 states and 15355 transitions. Word has length 97 [2023-12-20 12:35:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:35:58,489 INFO L495 AbstractCegarLoop]: Abstraction has 11914 states and 15355 transitions. [2023-12-20 12:35:58,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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) [2023-12-20 12:35:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 11914 states and 15355 transitions. [2023-12-20 12:35:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:35:58,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:35:58,491 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, 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] [2023-12-20 12:35:58,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 12:35:58,696 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,SelfDestructingSolverStorable25 [2023-12-20 12:35:58,696 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:35:58,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:35:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1044704494, now seen corresponding path program 1 times [2023-12-20 12:35:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:35:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921572162] [2023-12-20 12:35:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:35:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:35:59,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:35:59,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921572162] [2023-12-20 12:35:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921572162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:35:59,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949152327] [2023-12-20 12:35:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:59,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:35:59,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:35:59,471 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) [2023-12-20 12:35:59,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:35:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:59,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 12:35:59,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:36:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:36:00,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:36:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:36:03,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949152327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:36:03,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:36:03,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-12-20 12:36:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656275208] [2023-12-20 12:36:03,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:36:03,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 12:36:03,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:36:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 12:36:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:36:03,140 INFO L87 Difference]: Start difference. First operand 11914 states and 15355 transitions. Second operand has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 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) [2023-12-20 12:36:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:36:26,718 INFO L93 Difference]: Finished difference Result 17995 states and 22601 transitions. [2023-12-20 12:36:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-20 12:36:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 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 98 [2023-12-20 12:36:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:36:26,730 INFO L225 Difference]: With dead ends: 17995 [2023-12-20 12:36:26,730 INFO L226 Difference]: Without dead ends: 15287 [2023-12-20 12:36:26,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16843 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=7233, Invalid=43617, Unknown=0, NotChecked=0, Total=50850 [2023-12-20 12:36:26,735 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 28110 mSDsluCounter, 32027 mSDsCounter, 0 mSdLazyCounter, 4463 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28110 SdHoareTripleChecker+Valid, 33700 SdHoareTripleChecker+Invalid, 4787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 4463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:36:26,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28110 Valid, 33700 Invalid, 4787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [324 Valid, 4463 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 12:36:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15287 states. [2023-12-20 12:36:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15287 to 12304. [2023-12-20 12:36:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12304 states, 12302 states have (on average 1.2846691594862625) internal successors, (15804), 12303 states have internal predecessors, (15804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:36:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 15804 transitions. [2023-12-20 12:36:27,352 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 15804 transitions. Word has length 98 [2023-12-20 12:36:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:36:27,352 INFO L495 AbstractCegarLoop]: Abstraction has 12304 states and 15804 transitions. [2023-12-20 12:36:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 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) [2023-12-20 12:36:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 15804 transitions. [2023-12-20 12:36:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:36:27,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:36:27,354 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, 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] [2023-12-20 12:36:27,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 12:36:27,559 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,SelfDestructingSolverStorable26 [2023-12-20 12:36:27,559 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:36:27,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:36:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -344913889, now seen corresponding path program 1 times [2023-12-20 12:36:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:36:27,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29613463] [2023-12-20 12:36:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:36:27,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:36:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:36:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:36:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:36:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29613463] [2023-12-20 12:36:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29613463] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:36:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090328606] [2023-12-20 12:36:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:36:28,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:36:28,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:36:28,208 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) [2023-12-20 12:36:28,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:36:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:36:28,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 12:36:28,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:36:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:36:30,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:36:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:36:33,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090328606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:36:33,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:36:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-12-20 12:36:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051086001] [2023-12-20 12:36:33,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:36:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:36:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:36:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:36:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:36:33,100 INFO L87 Difference]: Start difference. First operand 12304 states and 15804 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:37:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:37:15,364 INFO L93 Difference]: Finished difference Result 25626 states and 31932 transitions. [2023-12-20 12:37:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2023-12-20 12:37:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 12:37:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:37:15,386 INFO L225 Difference]: With dead ends: 25626 [2023-12-20 12:37:15,386 INFO L226 Difference]: Without dead ends: 23757 [2023-12-20 12:37:15,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48263 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=15068, Invalid=104302, Unknown=0, NotChecked=0, Total=119370 [2023-12-20 12:37:15,396 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 20225 mSDsluCounter, 35753 mSDsCounter, 0 mSdLazyCounter, 3999 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20225 SdHoareTripleChecker+Valid, 37386 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 3999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:37:15,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20225 Valid, 37386 Invalid, 4289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 3999 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:37:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23757 states. [2023-12-20 12:37:16,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23757 to 21646. [2023-12-20 12:37:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21646 states, 21644 states have (on average 1.2587322121604139) internal successors, (27244), 21645 states have internal predecessors, (27244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:37:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21646 states to 21646 states and 27244 transitions. [2023-12-20 12:37:16,899 INFO L78 Accepts]: Start accepts. Automaton has 21646 states and 27244 transitions. Word has length 99 [2023-12-20 12:37:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:37:16,900 INFO L495 AbstractCegarLoop]: Abstraction has 21646 states and 27244 transitions. [2023-12-20 12:37:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:37:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 21646 states and 27244 transitions. [2023-12-20 12:37:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:37:16,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:37:16,901 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, 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] [2023-12-20 12:37:16,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:37:17,107 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,SelfDestructingSolverStorable27 [2023-12-20 12:37:17,107 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:37:17,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:37:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1670491045, now seen corresponding path program 1 times [2023-12-20 12:37:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:37:17,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918301686] [2023-12-20 12:37:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:37:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:37:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918301686] [2023-12-20 12:37:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918301686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:37:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738786232] [2023-12-20 12:37:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:18,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:37:18,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:37:18,627 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) [2023-12-20 12:37:18,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:37:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:18,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:37:18,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:37:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:20,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:37:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:26,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738786232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:37:26,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:37:26,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 21] total 63 [2023-12-20 12:37:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766287881] [2023-12-20 12:37:26,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:37:26,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 12:37:26,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:37:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 12:37:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 12:37:26,885 INFO L87 Difference]: Start difference. First operand 21646 states and 27244 transitions. Second operand has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:40:13,905 INFO L93 Difference]: Finished difference Result 60697 states and 74463 transitions. [2023-12-20 12:40:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2023-12-20 12:40:13,905 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 12:40:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:40:13,972 INFO L225 Difference]: With dead ends: 60697 [2023-12-20 12:40:13,972 INFO L226 Difference]: Without dead ends: 52733 [2023-12-20 12:40:13,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131286 ImplicationChecksByTransitivity, 156.3s TimeCoverageRelationStatistics Valid=38252, Invalid=272554, Unknown=0, NotChecked=0, Total=310806 [2023-12-20 12:40:13,999 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 29077 mSDsluCounter, 35263 mSDsCounter, 0 mSdLazyCounter, 7364 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29077 SdHoareTripleChecker+Valid, 36916 SdHoareTripleChecker+Invalid, 7894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 7364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:40:13,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29077 Valid, 36916 Invalid, 7894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [530 Valid, 7364 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-20 12:40:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52733 states. [2023-12-20 12:40:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52733 to 29383. [2023-12-20 12:40:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29383 states, 29381 states have (on average 1.2466219665770395) internal successors, (36627), 29382 states have internal predecessors, (36627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29383 states to 29383 states and 36627 transitions. [2023-12-20 12:40:16,836 INFO L78 Accepts]: Start accepts. Automaton has 29383 states and 36627 transitions. Word has length 99 [2023-12-20 12:40:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:16,836 INFO L495 AbstractCegarLoop]: Abstraction has 29383 states and 36627 transitions. [2023-12-20 12:40:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 29383 states and 36627 transitions. [2023-12-20 12:40:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:40:16,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:16,838 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, 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] [2023-12-20 12:40:16,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:40:17,043 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,SelfDestructingSolverStorable28 [2023-12-20 12:40:17,043 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:17,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1378580634, now seen corresponding path program 1 times [2023-12-20 12:40:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147452751] [2023-12-20 12:40:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:17,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147452751] [2023-12-20 12:40:17,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147452751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106788382] [2023-12-20 12:40:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:17,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:17,996 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) [2023-12-20 12:40:18,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:40:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:18,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:40:18,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:20,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106788382] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:22,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 62 [2023-12-20 12:40:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815624882] [2023-12-20 12:40:22,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 12:40:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 12:40:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3410, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 12:40:22,835 INFO L87 Difference]: Start difference. First operand 29383 states and 36627 transitions. Second operand has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:40:45,186 INFO L93 Difference]: Finished difference Result 42252 states and 51906 transitions. [2023-12-20 12:40:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-20 12:40:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 12:40:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:40:45,219 INFO L225 Difference]: With dead ends: 42252 [2023-12-20 12:40:45,220 INFO L226 Difference]: Without dead ends: 37740 [2023-12-20 12:40:45,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12040 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=5036, Invalid=33576, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 12:40:45,228 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 19631 mSDsluCounter, 26613 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19631 SdHoareTripleChecker+Valid, 28158 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:40:45,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19631 Valid, 28158 Invalid, 2303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [185 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:40:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37740 states. [2023-12-20 12:40:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37740 to 32232. [2023-12-20 12:40:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32232 states, 32230 states have (on average 1.2434998448650325) internal successors, (40078), 32231 states have internal predecessors, (40078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32232 states to 32232 states and 40078 transitions. [2023-12-20 12:40:48,578 INFO L78 Accepts]: Start accepts. Automaton has 32232 states and 40078 transitions. Word has length 100 [2023-12-20 12:40:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:48,578 INFO L495 AbstractCegarLoop]: Abstraction has 32232 states and 40078 transitions. [2023-12-20 12:40:48,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 32232 states and 40078 transitions. [2023-12-20 12:40:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:40:48,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:48,580 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, 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] [2023-12-20 12:40:48,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 12:40:48,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:48,785 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:48,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash 270429162, now seen corresponding path program 1 times [2023-12-20 12:40:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239839284] [2023-12-20 12:40:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:48,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:49,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:49,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239839284] [2023-12-20 12:40:49,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239839284] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:49,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834699655] [2023-12-20 12:40:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:49,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:49,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:49,623 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) [2023-12-20 12:40:49,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:40:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:49,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:40:49,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:51,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834699655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:54,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:54,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-12-20 12:40:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347951370] [2023-12-20 12:40:54,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:54,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:40:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:40:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:40:54,712 INFO L87 Difference]: Start difference. First operand 32232 states and 40078 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:41:31,770 INFO L93 Difference]: Finished difference Result 51310 states and 63114 transitions. [2023-12-20 12:41:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-20 12:41:31,770 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 12:41:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:41:31,807 INFO L225 Difference]: With dead ends: 51310 [2023-12-20 12:41:31,807 INFO L226 Difference]: Without dead ends: 44760 [2023-12-20 12:41:31,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22381 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=9415, Invalid=56377, Unknown=0, NotChecked=0, Total=65792 [2023-12-20 12:41:31,817 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 25563 mSDsluCounter, 23918 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25563 SdHoareTripleChecker+Valid, 25488 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:41:31,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25563 Valid, 25488 Invalid, 2829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [217 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:41:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44760 states. [2023-12-20 12:41:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44760 to 38842. [2023-12-20 12:41:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38842 states, 38840 states have (on average 1.2374356333676622) internal successors, (48062), 38841 states have internal predecessors, (48062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38842 states to 38842 states and 48062 transitions. [2023-12-20 12:41:36,354 INFO L78 Accepts]: Start accepts. Automaton has 38842 states and 48062 transitions. Word has length 100 [2023-12-20 12:41:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:41:36,355 INFO L495 AbstractCegarLoop]: Abstraction has 38842 states and 48062 transitions. [2023-12-20 12:41:36,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 38842 states and 48062 transitions. [2023-12-20 12:41:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:41:36,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:41:36,356 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, 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] [2023-12-20 12:41:36,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 12:41:36,561 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,SelfDestructingSolverStorable30 [2023-12-20 12:41:36,563 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:41:36,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:41:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1516062234, now seen corresponding path program 1 times [2023-12-20 12:41:36,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:41:36,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537166590] [2023-12-20 12:41:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:36,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:41:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:37,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:41:37,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537166590] [2023-12-20 12:41:37,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537166590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:41:37,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336344421] [2023-12-20 12:41:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:37,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:41:37,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:41:37,303 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) [2023-12-20 12:41:37,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:41:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:37,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:41:37,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:41:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:39,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:41:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336344421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:41:43,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:41:43,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 21] total 60 [2023-12-20 12:41:43,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760303162] [2023-12-20 12:41:43,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:41:43,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:41:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:41:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:41:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3232, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:41:43,142 INFO L87 Difference]: Start difference. First operand 38842 states and 48062 transitions. Second operand has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 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) [2023-12-20 12:42:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:02,023 INFO L93 Difference]: Finished difference Result 57830 states and 70771 transitions. [2023-12-20 12:42:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-20 12:42:02,024 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 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 100 [2023-12-20 12:42:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:02,074 INFO L225 Difference]: With dead ends: 57830 [2023-12-20 12:42:02,075 INFO L226 Difference]: Without dead ends: 51634 [2023-12-20 12:42:02,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=4981, Invalid=26881, Unknown=0, NotChecked=0, Total=31862 [2023-12-20 12:42:02,089 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 21364 mSDsluCounter, 32745 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21364 SdHoareTripleChecker+Valid, 34310 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:02,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21364 Valid, 34310 Invalid, 2442 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [165 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 12:42:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51634 states. [2023-12-20 12:42:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51634 to 38671. [2023-12-20 12:42:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38671 states, 38669 states have (on average 1.2376580723577026) internal successors, (47859), 38670 states have internal predecessors, (47859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38671 states to 38671 states and 47859 transitions. [2023-12-20 12:42:06,906 INFO L78 Accepts]: Start accepts. Automaton has 38671 states and 47859 transitions. Word has length 100 [2023-12-20 12:42:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:42:06,907 INFO L495 AbstractCegarLoop]: Abstraction has 38671 states and 47859 transitions. [2023-12-20 12:42:06,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 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) [2023-12-20 12:42:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 38671 states and 47859 transitions. [2023-12-20 12:42:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:42:06,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:42:06,909 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, 1, 1, 1] [2023-12-20 12:42:06,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:42:07,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:07,114 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:42:07,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:42:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash -347737969, now seen corresponding path program 1 times [2023-12-20 12:42:07,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:42:07,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462186256] [2023-12-20 12:42:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:07,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:42:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:07,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:42:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462186256] [2023-12-20 12:42:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462186256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:42:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30342681] [2023-12-20 12:42:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:07,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:42:07,453 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) [2023-12-20 12:42:07,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:42:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:07,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:42:07,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:42:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:08,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:42:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30342681] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:42:09,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:42:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-20 12:42:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991761420] [2023-12-20 12:42:09,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:42:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 12:42:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:42:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 12:42:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:42:09,739 INFO L87 Difference]: Start difference. First operand 38671 states and 47859 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:24,708 INFO L93 Difference]: Finished difference Result 119312 states and 146324 transitions. [2023-12-20 12:42:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-20 12:42:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 12:42:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:24,792 INFO L225 Difference]: With dead ends: 119312 [2023-12-20 12:42:24,792 INFO L226 Difference]: Without dead ends: 90514 [2023-12-20 12:42:24,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-12-20 12:42:24,806 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 24406 mSDsluCounter, 16804 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24406 SdHoareTripleChecker+Valid, 18366 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:24,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24406 Valid, 18366 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 12:42:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90514 states. [2023-12-20 12:42:31,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90514 to 50009. [2023-12-20 12:42:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50009 states, 50007 states have (on average 1.2304677345171675) internal successors, (61532), 50008 states have internal predecessors, (61532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50009 states to 50009 states and 61532 transitions. [2023-12-20 12:42:31,529 INFO L78 Accepts]: Start accepts. Automaton has 50009 states and 61532 transitions. Word has length 101 [2023-12-20 12:42:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:42:31,529 INFO L495 AbstractCegarLoop]: Abstraction has 50009 states and 61532 transitions. [2023-12-20 12:42:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 50009 states and 61532 transitions. [2023-12-20 12:42:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:42:31,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:42:31,530 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, 1, 1, 1] [2023-12-20 12:42:31,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 12:42:31,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:31,735 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:42:31,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:42:31,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1377902027, now seen corresponding path program 1 times [2023-12-20 12:42:31,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:42:31,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247841725] [2023-12-20 12:42:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:42:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:42:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247841725] [2023-12-20 12:42:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247841725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:42:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890671942] [2023-12-20 12:42:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:42:32,173 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) [2023-12-20 12:42:32,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:42:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:32,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:42:32,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:42:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:33,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:42:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890671942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:42:34,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:42:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-20 12:42:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059696722] [2023-12-20 12:42:34,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:42:34,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:42:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:42:34,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:42:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:42:34,868 INFO L87 Difference]: Start difference. First operand 50009 states and 61532 transitions. Second operand has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:51,441 INFO L93 Difference]: Finished difference Result 129962 states and 158669 transitions. [2023-12-20 12:42:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 12:42:51,442 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 12:42:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:51,568 INFO L225 Difference]: With dead ends: 129962 [2023-12-20 12:42:51,568 INFO L226 Difference]: Without dead ends: 100948 [2023-12-20 12:42:51,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 12:42:51,585 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 20435 mSDsluCounter, 15991 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20435 SdHoareTripleChecker+Valid, 17557 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:51,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20435 Valid, 17557 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 12:42:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100948 states. [2023-12-20 12:43:00,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100948 to 66102. [2023-12-20 12:43:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66102 states, 66100 states have (on average 1.2251739788199698) internal successors, (80984), 66101 states have internal predecessors, (80984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66102 states to 66102 states and 80984 transitions. [2023-12-20 12:43:01,077 INFO L78 Accepts]: Start accepts. Automaton has 66102 states and 80984 transitions. Word has length 101 [2023-12-20 12:43:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:43:01,077 INFO L495 AbstractCegarLoop]: Abstraction has 66102 states and 80984 transitions. [2023-12-20 12:43:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 66102 states and 80984 transitions. [2023-12-20 12:43:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:43:01,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:43:01,078 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, 1, 1, 1] [2023-12-20 12:43:01,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 12:43:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 12:43:01,284 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:43:01,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:43:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1272668459, now seen corresponding path program 1 times [2023-12-20 12:43:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:43:01,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908808121] [2023-12-20 12:43:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:43:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:02,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:43:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908808121] [2023-12-20 12:43:02,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908808121] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:43:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20428191] [2023-12-20 12:43:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:02,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:43:02,073 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) [2023-12-20 12:43:02,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:43:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:02,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:43:02,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:43:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:02,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:43:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:04,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20428191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:43:04,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:43:04,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 15] total 46 [2023-12-20 12:43:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164377413] [2023-12-20 12:43:04,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:43:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 12:43:04,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:43:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 12:43:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 12:43:04,126 INFO L87 Difference]: Start difference. First operand 66102 states and 80984 transitions. Second operand has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:43:35,141 INFO L93 Difference]: Finished difference Result 142608 states and 173126 transitions. [2023-12-20 12:43:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-20 12:43:35,141 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 12:43:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:43:35,263 INFO L225 Difference]: With dead ends: 142608 [2023-12-20 12:43:35,263 INFO L226 Difference]: Without dead ends: 103490 [2023-12-20 12:43:35,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20962 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=9769, Invalid=44287, Unknown=0, NotChecked=0, Total=54056 [2023-12-20 12:43:35,294 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 27002 mSDsluCounter, 23365 mSDsCounter, 0 mSdLazyCounter, 3025 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27002 SdHoareTripleChecker+Valid, 24929 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:43:35,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27002 Valid, 24929 Invalid, 3180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 3025 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 12:43:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103490 states. [2023-12-20 12:43:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103490 to 64663. [2023-12-20 12:43:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64663 states, 64661 states have (on average 1.2253444889500626) internal successors, (79232), 64662 states have internal predecessors, (79232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64663 states to 64663 states and 79232 transitions. [2023-12-20 12:43:45,203 INFO L78 Accepts]: Start accepts. Automaton has 64663 states and 79232 transitions. Word has length 101 [2023-12-20 12:43:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:43:45,203 INFO L495 AbstractCegarLoop]: Abstraction has 64663 states and 79232 transitions. [2023-12-20 12:43:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 64663 states and 79232 transitions. [2023-12-20 12:43:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 12:43:45,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:43:45,212 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, 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] [2023-12-20 12:43:45,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 12:43:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:45,419 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:43:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:43:45,420 INFO L85 PathProgramCache]: Analyzing trace with hash -901265796, now seen corresponding path program 1 times [2023-12-20 12:43:45,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:43:45,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811462176] [2023-12-20 12:43:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:43:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:46,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:43:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811462176] [2023-12-20 12:43:46,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811462176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:43:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440816724] [2023-12-20 12:43:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:46,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:46,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:43:46,699 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) [2023-12-20 12:43:46,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:43:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:46,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-20 12:43:46,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:43:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:49,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:43:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:56,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440816724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:43:56,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:43:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-12-20 12:43:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224023304] [2023-12-20 12:43:56,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:43:56,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-20 12:43:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:43:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-20 12:43:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 12:43:56,419 INFO L87 Difference]: Start difference. First operand 64663 states and 79232 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 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... [2023-12-20 12:48:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2023-12-20 12:48:10,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109975 ImplicationChecksByTransitivity, 233.7s TimeCoverageRelationStatistics Valid=34942, Invalid=226690, Unknown=0, NotChecked=0, Total=261632 [2023-12-20 12:48:10,117 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 12355 mSDsluCounter, 11230 mSDsCounter, 0 mSdLazyCounter, 6285 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12355 SdHoareTripleChecker+Valid, 11685 SdHoareTripleChecker+Invalid, 6734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 6285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:48:10,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12355 Valid, 11685 Invalid, 6734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [449 Valid, 6285 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-20 12:48:10,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:48:10,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 12:48:10,143 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:48:10,143 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 [2023-12-20 12:48:10,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:48:10,324 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (64663states) and FLOYD_HOARE automaton (currently 434 states, 86 states before enhancement),while ReachableStatesComputation was computing reachable states (113932 states constructed, input type IntersectNwa). [2023-12-20 12:48:10,325 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:48:10,327 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] [2023-12-20 12:48:10,328 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:48:10,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:48:10 BoogieIcfgContainer [2023-12-20 12:48:10,330 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:48:10,330 INFO L158 Benchmark]: Toolchain (without parser) took 832413.17ms. Allocated memory was 187.7MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 127.6MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-20 12:48:10,330 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:48:10,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1260.59ms. Allocated memory was 187.7MB in the beginning and 245.4MB in the end (delta: 57.7MB). Free memory was 127.6MB in the beginning and 164.9MB in the end (delta: -37.4MB). Peak memory consumption was 84.1MB. Max. memory is 8.0GB. [2023-12-20 12:48:10,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 228.99ms. Allocated memory is still 245.4MB. Free memory was 164.9MB in the beginning and 91.0MB in the end (delta: 73.9MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. [2023-12-20 12:48:10,330 INFO L158 Benchmark]: Boogie Preprocessor took 492.50ms. Allocated memory was 245.4MB in the beginning and 459.3MB in the end (delta: 213.9MB). Free memory was 91.0MB in the beginning and 341.7MB in the end (delta: -250.7MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-12-20 12:48:10,330 INFO L158 Benchmark]: RCFGBuilder took 2961.73ms. Allocated memory was 459.3MB in the beginning and 595.6MB in the end (delta: 136.3MB). Free memory was 341.7MB in the beginning and 466.9MB in the end (delta: -125.3MB). Peak memory consumption was 230.7MB. Max. memory is 8.0GB. [2023-12-20 12:48:10,331 INFO L158 Benchmark]: TraceAbstraction took 827463.68ms. Allocated memory was 595.6MB in the beginning and 3.5GB in the end (delta: 2.9GB). Free memory was 466.4MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-20 12:48:10,331 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1260.59ms. Allocated memory was 187.7MB in the beginning and 245.4MB in the end (delta: 57.7MB). Free memory was 127.6MB in the beginning and 164.9MB in the end (delta: -37.4MB). Peak memory consumption was 84.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 228.99ms. Allocated memory is still 245.4MB. Free memory was 164.9MB in the beginning and 91.0MB in the end (delta: 73.9MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 492.50ms. Allocated memory was 245.4MB in the beginning and 459.3MB in the end (delta: 213.9MB). Free memory was 91.0MB in the beginning and 341.7MB in the end (delta: -250.7MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. * RCFGBuilder took 2961.73ms. Allocated memory was 459.3MB in the beginning and 595.6MB in the end (delta: 136.3MB). Free memory was 341.7MB in the beginning and 466.9MB in the end (delta: -125.3MB). Peak memory consumption was 230.7MB. Max. memory is 8.0GB. * TraceAbstraction took 827463.68ms. Allocated memory was 595.6MB in the beginning and 3.5GB in the end (delta: 2.9GB). Free memory was 466.4MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 3.0GB. 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: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was constructing difference of abstraction (64663states) and FLOYD_HOARE automaton (currently 434 states, 86 states before enhancement),while ReachableStatesComputation was computing reachable states (113932 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 370]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 370). Cancelled while NwaCegarLoop was constructing difference of abstraction (64663states) and FLOYD_HOARE automaton (currently 434 states, 86 states before enhancement),while ReachableStatesComputation was computing reachable states (113932 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 827.4s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 693.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382924 SdHoareTripleChecker+Valid, 44.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382924 mSDsluCounter, 431540 SdHoareTripleChecker+Invalid, 39.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 380340 mSDsCounter, 5778 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54563 IncrementalHoareTripleChecker+Invalid, 60341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5778 mSolverCounterUnsat, 51200 mSDtfsCounter, 54563 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6262 GetRequests, 2606 SyntacticMatches, 10 SemanticMatches, 3646 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453953 ImplicationChecksByTransitivity, 588.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66102occurred in iteration=34, InterpolantAutomatonStates: 2515, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 46.7s AutomataMinimizationTime, 35 MinimizatonAttempts, 185876 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 80.6s InterpolantComputationTime, 3878 NumberOfCodeBlocks, 3878 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 5351 ConstructedInterpolants, 0 QuantifiedInterpolants, 130580 SizeOfPredicates, 165 NumberOfNonLiveVariables, 6793 ConjunctsInSsa, 534 ConjunctsInUnsatCore, 72 InterpolantComputations, 18 PerfectInterpolantSequences, 1238/3449 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