/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/array-examples/standard_partition_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 06:36:22,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 06:36:22,305 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 06:36:22,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 06:36:22,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 06:36:22,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 06:36:22,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 06:36:22,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 06:36:22,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 06:36:22,334 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 06:36:22,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 06:36:22,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 06:36:22,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 06:36:22,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 06:36:22,336 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 06:36:22,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 06:36:22,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 06:36:22,336 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 06:36:22,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 06:36:22,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 06:36:22,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 06:36:22,338 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 06:36:22,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 06:36:22,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 06:36:22,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 06:36:22,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 06:36:22,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 06:36:22,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 06:36:22,341 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 06:36:22,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 06:36:22,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 06:36:22,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 06:36:22,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 06:36:22,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 06:36:22,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 06:36:22,523 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 06:36:22,524 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 06:36:22,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-2.i [2023-12-20 06:36:23,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 06:36:23,690 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 06:36:23,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-2.i [2023-12-20 06:36:23,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae63e164/b0aa88f1d4d14884b1da7ac8314d7565/FLAGd5c10170a [2023-12-20 06:36:23,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae63e164/b0aa88f1d4d14884b1da7ac8314d7565 [2023-12-20 06:36:23,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 06:36:23,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 06:36:23,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 06:36:23,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 06:36:23,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 06:36:23,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e7e45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23, skipping insertion in model container [2023-12-20 06:36:23,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,741 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 06:36:23,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-2.i[820,833] [2023-12-20 06:36:23,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 06:36:23,884 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 06:36:23,896 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-2.i[820,833] [2023-12-20 06:36:23,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 06:36:23,912 INFO L206 MainTranslator]: Completed translation [2023-12-20 06:36:23,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23 WrapperNode [2023-12-20 06:36:23,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 06:36:23,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 06:36:23,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 06:36:23,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 06:36:23,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,936 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-12-20 06:36:23,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 06:36:23,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 06:36:23,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 06:36:23,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 06:36:23,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,954 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-20 06:36:23,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 06:36:23,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 06:36:23,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 06:36:23,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 06:36:23,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (1/1) ... [2023-12-20 06:36:23,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 06:36:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:24,005 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 06:36:24,022 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 06:36:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 06:36:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 06:36:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 06:36:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 06:36:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 06:36:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 06:36:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 06:36:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 06:36:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 06:36:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 06:36:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 06:36:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 06:36:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 06:36:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 06:36:24,106 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 06:36:24,107 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 06:36:24,218 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 06:36:24,244 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 06:36:24,245 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-20 06:36:24,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:36:24 BoogieIcfgContainer [2023-12-20 06:36:24,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 06:36:24,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 06:36:24,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 06:36:24,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 06:36:24,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:36:23" (1/3) ... [2023-12-20 06:36:24,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412128a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:36:24, skipping insertion in model container [2023-12-20 06:36:24,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:23" (2/3) ... [2023-12-20 06:36:24,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412128a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:36:24, skipping insertion in model container [2023-12-20 06:36:24,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:36:24" (3/3) ... [2023-12-20 06:36:24,257 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-2.i [2023-12-20 06:36:24,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 06:36:24,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 06:36:24,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 06:36:24,310 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;@50add85f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 06:36:24,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 06:36:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 06:36:24,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:24,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:24,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:24,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 215789761, now seen corresponding path program 1 times [2023-12-20 06:36:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:24,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159949325] [2023-12-20 06:36:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:24,449 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 06:36:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159949325] [2023-12-20 06:36:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159949325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:36:24,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 06:36:24,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 06:36:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127569762] [2023-12-20 06:36:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:36:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 06:36:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 06:36:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 06:36:24,476 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:24,499 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2023-12-20 06:36:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 06:36:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-12-20 06:36:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:24,505 INFO L225 Difference]: With dead ends: 35 [2023-12-20 06:36:24,505 INFO L226 Difference]: Without dead ends: 17 [2023-12-20 06:36:24,507 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 06:36:24,510 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:24,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:36:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-20 06:36:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-20 06:36:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-20 06:36:24,531 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2023-12-20 06:36:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:24,531 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-20 06:36:24,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-20 06:36:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-20 06:36:24,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:24,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:24,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 06:36:24,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:24,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 647037981, now seen corresponding path program 1 times [2023-12-20 06:36:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529995625] [2023-12-20 06:36:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 06:36:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529995625] [2023-12-20 06:36:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529995625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11711907] [2023-12-20 06:36:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:24,614 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 06:36:24,637 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 06:36:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:24,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 06:36:24,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:36:24,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 06:36:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11711907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:36:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:36:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-20 06:36:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928349095] [2023-12-20 06:36:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:36:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 06:36:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 06:36:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 06:36:24,735 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:24,772 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-12-20 06:36:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 06:36:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-12-20 06:36:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:24,773 INFO L225 Difference]: With dead ends: 33 [2023-12-20 06:36:24,774 INFO L226 Difference]: Without dead ends: 23 [2023-12-20 06:36:24,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 06:36:24,776 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:24,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:36:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-20 06:36:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-12-20 06:36:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-12-20 06:36:24,786 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2023-12-20 06:36:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-12-20 06:36:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-12-20 06:36:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 06:36:24,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:24,787 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 06:36:24,797 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 06:36:24,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:24,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:24,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1752948195, now seen corresponding path program 1 times [2023-12-20 06:36:24,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:24,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339192647] [2023-12-20 06:36:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:24,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 06:36:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339192647] [2023-12-20 06:36:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339192647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430968199] [2023-12-20 06:36:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:25,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:25,113 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 06:36:25,136 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 06:36:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:25,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 06:36:25,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 06:36:25,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 06:36:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430968199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:25,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 06:36:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308678822] [2023-12-20 06:36:25,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 06:36:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 06:36:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 06:36:25,232 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:25,257 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-12-20 06:36:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 06:36:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:36:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:25,262 INFO L225 Difference]: With dead ends: 38 [2023-12-20 06:36:25,262 INFO L226 Difference]: Without dead ends: 22 [2023-12-20 06:36:25,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 06:36:25,265 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:25,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:36:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-20 06:36:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-20 06:36:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-12-20 06:36:25,271 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2023-12-20 06:36:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:25,271 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-12-20 06:36:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-12-20 06:36:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 06:36:25,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:25,272 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:25,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:25,477 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,SelfDestructingSolverStorable2 [2023-12-20 06:36:25,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1726744113, now seen corresponding path program 2 times [2023-12-20 06:36:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15695102] [2023-12-20 06:36:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 06:36:25,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15695102] [2023-12-20 06:36:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15695102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263703534] [2023-12-20 06:36:25,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 06:36:25,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:25,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:25,580 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 06:36:25,582 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 06:36:25,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 06:36:25,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:25,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 06:36:25,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 06:36:25,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 06:36:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263703534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:25,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:25,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-12-20 06:36:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242666195] [2023-12-20 06:36:25,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:25,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 06:36:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 06:36:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 06:36:25,713 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 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 06:36:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:25,826 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2023-12-20 06:36:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 06:36:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 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 20 [2023-12-20 06:36:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:25,827 INFO L225 Difference]: With dead ends: 54 [2023-12-20 06:36:25,827 INFO L226 Difference]: Without dead ends: 38 [2023-12-20 06:36:25,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2023-12-20 06:36:25,828 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:25,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:36:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-20 06:36:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2023-12-20 06:36:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2023-12-20 06:36:25,832 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 20 [2023-12-20 06:36:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:25,833 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2023-12-20 06:36:25,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 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 06:36:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-12-20 06:36:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 06:36:25,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:25,833 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:25,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:26,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:26,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:26,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1883384405, now seen corresponding path program 3 times [2023-12-20 06:36:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178827339] [2023-12-20 06:36:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:26,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 06:36:26,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:26,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178827339] [2023-12-20 06:36:26,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178827339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:26,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597078403] [2023-12-20 06:36:26,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 06:36:26,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:26,280 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 06:36:26,304 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 06:36:26,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 06:36:26,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:26,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 06:36:26,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 06:36:26,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 06:36:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597078403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:26,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:26,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2023-12-20 06:36:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18391317] [2023-12-20 06:36:26,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:26,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 06:36:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 06:36:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-20 06:36:26,430 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:26,611 INFO L93 Difference]: Finished difference Result 81 states and 111 transitions. [2023-12-20 06:36:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 06:36:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-20 06:36:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:26,612 INFO L225 Difference]: With dead ends: 81 [2023-12-20 06:36:26,612 INFO L226 Difference]: Without dead ends: 59 [2023-12-20 06:36:26,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2023-12-20 06:36:26,614 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 72 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:26,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 102 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 06:36:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-20 06:36:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-20 06:36:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-12-20 06:36:26,619 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 32 [2023-12-20 06:36:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:26,619 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-12-20 06:36:26,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-12-20 06:36:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 06:36:26,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:26,620 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:26,628 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 06:36:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:26,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -468310051, now seen corresponding path program 4 times [2023-12-20 06:36:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:26,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51337231] [2023-12-20 06:36:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-20 06:36:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51337231] [2023-12-20 06:36:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51337231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604711495] [2023-12-20 06:36:27,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 06:36:27,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:27,052 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 06:36:27,075 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 06:36:27,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 06:36:27,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:27,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 06:36:27,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-20 06:36:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-20 06:36:27,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604711495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:27,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:27,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 27 [2023-12-20 06:36:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352697948] [2023-12-20 06:36:27,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 06:36:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 06:36:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-12-20 06:36:27,370 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:27,588 INFO L93 Difference]: Finished difference Result 154 states and 216 transitions. [2023-12-20 06:36:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 06:36:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 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 06:36:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:27,592 INFO L225 Difference]: With dead ends: 154 [2023-12-20 06:36:27,592 INFO L226 Difference]: Without dead ends: 108 [2023-12-20 06:36:27,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 06:36:27,595 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 104 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:27,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 103 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 06:36:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-20 06:36:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-20 06:36:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 107 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 139 transitions. [2023-12-20 06:36:27,617 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 139 transitions. Word has length 57 [2023-12-20 06:36:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:27,617 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 139 transitions. [2023-12-20 06:36:27,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:27,617 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 139 transitions. [2023-12-20 06:36:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 06:36:27,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:27,618 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:27,625 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 06:36:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:27,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:27,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1663214571, now seen corresponding path program 5 times [2023-12-20 06:36:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873355623] [2023-12-20 06:36:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2023-12-20 06:36:28,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873355623] [2023-12-20 06:36:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873355623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:28,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302346920] [2023-12-20 06:36:28,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 06:36:28,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:28,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:28,138 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 06:36:28,162 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 06:36:35,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-20 06:36:35,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:35,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 06:36:35,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-20 06:36:35,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-20 06:36:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302346920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:35,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:35,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 45 [2023-12-20 06:36:35,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473480244] [2023-12-20 06:36:35,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:35,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 06:36:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 06:36:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 06:36:35,963 INFO L87 Difference]: Start difference. First operand 108 states and 139 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:36,302 INFO L93 Difference]: Finished difference Result 299 states and 425 transitions. [2023-12-20 06:36:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 06:36:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 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 106 [2023-12-20 06:36:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:36,307 INFO L225 Difference]: With dead ends: 299 [2023-12-20 06:36:36,307 INFO L226 Difference]: Without dead ends: 205 [2023-12-20 06:36:36,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1185, Invalid=2121, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 06:36:36,309 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 424 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:36,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 125 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 06:36:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-20 06:36:36,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-12-20 06:36:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.3137254901960784) internal successors, (268), 204 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 268 transitions. [2023-12-20 06:36:36,323 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 268 transitions. Word has length 106 [2023-12-20 06:36:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:36,324 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 268 transitions. [2023-12-20 06:36:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 268 transitions. [2023-12-20 06:36:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-20 06:36:36,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:36,331 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:36,343 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 06:36:36,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:36,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:36,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2048898461, now seen corresponding path program 6 times [2023-12-20 06:36:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:36,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186845338] [2023-12-20 06:36:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:36,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:36,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:36,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186845338] [2023-12-20 06:36:36,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186845338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:36,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799651893] [2023-12-20 06:36:36,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 06:36:36,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:36,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:36,973 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 06:36:36,998 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 06:36:37,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-20 06:36:37,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:37,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 06:36:37,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:37,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-20 06:36:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 59 proven. 59 refuted. 0 times theorem prover too weak. 2643 trivial. 0 not checked. [2023-12-20 06:36:37,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:37,547 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-20 06:36:37,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2023-12-20 06:36:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 2643 trivial. 0 not checked. [2023-12-20 06:36:37,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799651893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:37,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:37,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 24 [2023-12-20 06:36:37,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457328703] [2023-12-20 06:36:37,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:37,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 06:36:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 06:36:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-12-20 06:36:37,571 INFO L87 Difference]: Start difference. First operand 205 states and 268 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:37,798 INFO L93 Difference]: Finished difference Result 583 states and 770 transitions. [2023-12-20 06:36:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 06:36:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2023-12-20 06:36:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:37,800 INFO L225 Difference]: With dead ends: 583 [2023-12-20 06:36:37,800 INFO L226 Difference]: Without dead ends: 393 [2023-12-20 06:36:37,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 06:36:37,804 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:37,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 124 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 06:36:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-20 06:36:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 298. [2023-12-20 06:36:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.3164983164983164) internal successors, (391), 297 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 391 transitions. [2023-12-20 06:36:37,817 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 391 transitions. Word has length 203 [2023-12-20 06:36:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:37,817 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 391 transitions. [2023-12-20 06:36:37,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 391 transitions. [2023-12-20 06:36:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-20 06:36:37,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:37,820 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 29, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:37,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:38,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:38,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:38,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash 354820457, now seen corresponding path program 1 times [2023-12-20 06:36:38,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:38,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718090052] [2023-12-20 06:36:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:38,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718090052] [2023-12-20 06:36:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718090052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495360080] [2023-12-20 06:36:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:38,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:38,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:38,469 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 06:36:38,471 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 06:36:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:38,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 06:36:38,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:38,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:38,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495360080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:38,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:38,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-12-20 06:36:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605387839] [2023-12-20 06:36:38,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 06:36:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 06:36:38,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 06:36:38,949 INFO L87 Difference]: Start difference. First operand 298 states and 391 transitions. Second operand has 33 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:38,980 INFO L93 Difference]: Finished difference Result 596 states and 797 transitions. [2023-12-20 06:36:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 06:36:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-20 06:36:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:38,982 INFO L225 Difference]: With dead ends: 596 [2023-12-20 06:36:38,982 INFO L226 Difference]: Without dead ends: 314 [2023-12-20 06:36:38,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 06:36:38,983 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:38,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:36:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-20 06:36:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2023-12-20 06:36:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 313 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 407 transitions. [2023-12-20 06:36:38,991 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 407 transitions. Word has length 204 [2023-12-20 06:36:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:38,991 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 407 transitions. [2023-12-20 06:36:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 407 transitions. [2023-12-20 06:36:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-20 06:36:38,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:38,992 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:39,010 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 06:36:39,199 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,SelfDestructingSolverStorable8 [2023-12-20 06:36:39,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:39,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash 12817257, now seen corresponding path program 2 times [2023-12-20 06:36:39,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:39,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883375271] [2023-12-20 06:36:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:40,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:40,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883375271] [2023-12-20 06:36:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883375271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:40,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974021327] [2023-12-20 06:36:40,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 06:36:40,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:40,133 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 06:36:40,157 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 06:36:40,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 06:36:40,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:40,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 06:36:40,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:40,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974021327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:41,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:41,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2023-12-20 06:36:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180013837] [2023-12-20 06:36:41,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:41,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-20 06:36:41,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-20 06:36:41,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 06:36:41,394 INFO L87 Difference]: Start difference. First operand 314 states and 407 transitions. Second operand has 65 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:41,455 INFO L93 Difference]: Finished difference Result 628 states and 845 transitions. [2023-12-20 06:36:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-20 06:36:41,456 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 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 220 [2023-12-20 06:36:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:41,457 INFO L225 Difference]: With dead ends: 628 [2023-12-20 06:36:41,457 INFO L226 Difference]: Without dead ends: 346 [2023-12-20 06:36:41,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 06:36:41,459 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:41,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:36:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-20 06:36:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-12-20 06:36:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.272463768115942) internal successors, (439), 345 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 439 transitions. [2023-12-20 06:36:41,485 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 439 transitions. Word has length 220 [2023-12-20 06:36:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:41,485 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 439 transitions. [2023-12-20 06:36:41,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 439 transitions. [2023-12-20 06:36:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-20 06:36:41,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:41,487 INFO L195 NwaCegarLoop]: trace histogram [62, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:41,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:41,694 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,SelfDestructingSolverStorable9 [2023-12-20 06:36:41,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:41,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash 9598825, now seen corresponding path program 3 times [2023-12-20 06:36:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:41,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696834592] [2023-12-20 06:36:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:41,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4623 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:44,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696834592] [2023-12-20 06:36:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696834592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90543846] [2023-12-20 06:36:44,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 06:36:44,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:44,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:44,260 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 06:36:44,261 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 06:36:44,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 06:36:44,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:44,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 06:36:44,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:44,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-20 06:36:44,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 06:36:44,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-12-20 06:36:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4623 backedges. 150 proven. 88 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2023-12-20 06:36:44,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4623 backedges. 88 proven. 88 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked. [2023-12-20 06:36:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90543846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:45,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:45,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 10, 9] total 77 [2023-12-20 06:36:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475130223] [2023-12-20 06:36:45,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:45,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-20 06:36:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:45,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-20 06:36:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2191, Invalid=3661, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 06:36:45,150 INFO L87 Difference]: Start difference. First operand 346 states and 439 transitions. Second operand has 77 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:49,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 06:36:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:51,959 INFO L93 Difference]: Finished difference Result 1016 states and 1292 transitions. [2023-12-20 06:36:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-20 06:36:51,960 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 0 states have call successors, (0), 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 252 [2023-12-20 06:36:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:51,966 INFO L225 Difference]: With dead ends: 1016 [2023-12-20 06:36:51,966 INFO L226 Difference]: Without dead ends: 734 [2023-12-20 06:36:51,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 489 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3462 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6944, Invalid=15108, Unknown=0, NotChecked=0, Total=22052 [2023-12-20 06:36:51,970 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 256 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:51,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 75 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 213 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 06:36:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-20 06:36:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 446. [2023-12-20 06:36:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.2853932584269663) internal successors, (572), 445 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 572 transitions. [2023-12-20 06:36:51,994 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 572 transitions. Word has length 252 [2023-12-20 06:36:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:51,994 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 572 transitions. [2023-12-20 06:36:51,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:36:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 572 transitions. [2023-12-20 06:36:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 06:36:51,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:51,996 INFO L195 NwaCegarLoop]: trace histogram [63, 30, 30, 30, 30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:52,004 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 06:36:52,202 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,SelfDestructingSolverStorable10 [2023-12-20 06:36:52,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:52,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1984663325, now seen corresponding path program 4 times [2023-12-20 06:36:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:52,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84211172] [2023-12-20 06:36:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:52,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4686 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-20 06:36:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84211172] [2023-12-20 06:36:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84211172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102565349] [2023-12-20 06:36:54,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 06:36:54,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:54,635 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 06:36:54,636 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 06:36:56,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 06:36:56,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:56,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 06:36:56,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4686 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-20 06:36:57,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4686 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-20 06:36:59,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102565349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:59,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:59,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 32, 32] total 127 [2023-12-20 06:36:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515408470] [2023-12-20 06:36:59,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-20 06:36:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-20 06:36:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2023-12-20 06:36:59,404 INFO L87 Difference]: Start difference. First operand 446 states and 572 transitions. Second operand has 128 states, 128 states have (on average 2.109375) internal successors, (270), 127 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:37:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:37:01,785 INFO L93 Difference]: Finished difference Result 1406 states and 1978 transitions. [2023-12-20 06:37:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-20 06:37:01,786 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.109375) internal successors, (270), 127 states have internal predecessors, (270), 0 states have call successors, (0), 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 253 [2023-12-20 06:37:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:37:01,788 INFO L225 Difference]: With dead ends: 1406 [2023-12-20 06:37:01,788 INFO L226 Difference]: Without dead ends: 1025 [2023-12-20 06:37:01,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5922 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12352, Invalid=24320, Unknown=0, NotChecked=0, Total=36672 [2023-12-20 06:37:01,791 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 896 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 06:37:01,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 194 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 06:37:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-12-20 06:37:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 831. [2023-12-20 06:37:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.3072289156626506) internal successors, (1085), 830 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:37:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1085 transitions. [2023-12-20 06:37:01,821 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1085 transitions. Word has length 253 [2023-12-20 06:37:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:37:01,821 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1085 transitions. [2023-12-20 06:37:01,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.109375) internal successors, (270), 127 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:37:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1085 transitions. [2023-12-20 06:37:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-20 06:37:01,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:37:01,826 INFO L195 NwaCegarLoop]: trace histogram [64, 62, 62, 62, 62, 62, 60, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:37:01,836 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 06:37:02,036 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,SelfDestructingSolverStorable11 [2023-12-20 06:37:02,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:37:02,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:37:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1996450859, now seen corresponding path program 5 times [2023-12-20 06:37:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:37:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10297053] [2023-12-20 06:37:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:37:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:37:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:37:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13550 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 11470 trivial. 0 not checked. [2023-12-20 06:37:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:37:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10297053] [2023-12-20 06:37:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10297053] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:37:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712128335] [2023-12-20 06:37:05,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 06:37:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:37:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:37:05,201 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 06:37:05,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 06:51:02,392 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 06:51:02,393 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:51:03,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 06:51:03,598 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process [2023-12-20 06:51:03,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 137 [2023-12-20 06:51:03,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 06:51:03,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:51:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2023-12-20 06:51:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183586006] [2023-12-20 06:51:03,634 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 06:51:03,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 06:51:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 06:51:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 06:51:03,636 INFO L87 Difference]: Start difference. First operand 831 states and 1085 transitions. Second operand has 67 states, 67 states have (on average 1.208955223880597) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:51:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 06:51:03,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 06:51:03,638 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:03,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:03,639 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 06:51:03,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 06:51:03,639 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (831states) and FLOYD_HOARE automaton (currently 2 states, 67 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 06:51:03,643 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 1, 1] [2023-12-20 06:51:03,645 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 06:51:03,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 06:51:03 BoogieIcfgContainer [2023-12-20 06:51:03,647 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 06:51:03,647 INFO L158 Benchmark]: Toolchain (without parser) took 879933.45ms. Allocated memory was 257.9MB in the beginning and 669.0MB in the end (delta: 411.0MB). Free memory was 202.9MB in the beginning and 424.9MB in the end (delta: -222.0MB). Peak memory consumption was 190.6MB. Max. memory is 8.0GB. [2023-12-20 06:51:03,647 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 06:51:03,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.24ms. Allocated memory is still 257.9MB. Free memory was 202.4MB in the beginning and 191.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 06:51:03,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.97ms. Allocated memory is still 257.9MB. Free memory was 191.3MB in the beginning and 189.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 06:51:03,648 INFO L158 Benchmark]: Boogie Preprocessor took 25.26ms. Allocated memory is still 257.9MB. Free memory was 189.8MB in the beginning and 187.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:51:03,648 INFO L158 Benchmark]: RCFGBuilder took 282.05ms. Allocated memory is still 257.9MB. Free memory was 187.7MB in the beginning and 175.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 06:51:03,649 INFO L158 Benchmark]: TraceAbstraction took 879394.03ms. Allocated memory was 257.9MB in the beginning and 669.0MB in the end (delta: 411.0MB). Free memory was 174.0MB in the beginning and 424.9MB in the end (delta: -250.9MB). Peak memory consumption was 162.3MB. Max. memory is 8.0GB. [2023-12-20 06:51:03,651 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.24ms. Allocated memory is still 257.9MB. Free memory was 202.4MB in the beginning and 191.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.97ms. Allocated memory is still 257.9MB. Free memory was 191.3MB in the beginning and 189.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.26ms. Allocated memory is still 257.9MB. Free memory was 189.8MB in the beginning and 187.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 282.05ms. Allocated memory is still 257.9MB. Free memory was 187.7MB in the beginning and 175.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 879394.03ms. Allocated memory was 257.9MB in the beginning and 669.0MB in the end (delta: 411.0MB). Free memory was 174.0MB in the beginning and 424.9MB in the end (delta: -250.9MB). Peak memory consumption was 162.3MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (831states) and FLOYD_HOARE automaton (currently 2 states, 67 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.3s, OverallIterations: 13, TraceHistogramMax: 64, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1793 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1793 mSDsluCounter, 1186 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1022 mSDsCounter, 441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1652 IncrementalHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 441 mSolverCounterUnsat, 164 mSDtfsCounter, 1652 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3225 GetRequests, 2534 SyntacticMatches, 3 SemanticMatches, 688 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10661 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=831occurred in iteration=12, InterpolantAutomatonStates: 443, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 585 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 9.8s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 3206 NumberOfCodeBlocks, 2809 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 4536 ConstructedInterpolants, 1 QuantifiedInterpolants, 9676 SizeOfPredicates, 13 NumberOfNonLiveVariables, 4782 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 34 InterpolantComputations, 2 PerfectInterpolantSequences, 58497/70192 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