/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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:46:57,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:46:57,781 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:46:57,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:46:57,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:46:57,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:46:57,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:46:57,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:46:57,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:46:57,810 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:46:57,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:46:57,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:46:57,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:46:57,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:46:57,812 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:46:57,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:46:57,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:46:57,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:46:57,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:46:57,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:46:57,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:46:57,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:46:57,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:46:57,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:46:57,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:46:57,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:46:57,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:46:57,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:46:57,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:46:57,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:46:57,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:46:57,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:46:58,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:46:58,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:46:58,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:46:58,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:46:58,025 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:46:58,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2023-12-16 04:46:59,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:46:59,147 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:46:59,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2023-12-16 04:46:59,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81b6e658d/5db454c1575247128de322f6cad6e1e6/FLAG72960af3c [2023-12-16 04:46:59,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81b6e658d/5db454c1575247128de322f6cad6e1e6 [2023-12-16 04:46:59,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:46:59,167 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:46:59,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:46:59,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:46:59,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:46:59,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3004741d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59, skipping insertion in model container [2023-12-16 04:46:59,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:46:59,308 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2023-12-16 04:46:59,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:46:59,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:46:59,352 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2023-12-16 04:46:59,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:46:59,382 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:46:59,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59 WrapperNode [2023-12-16 04:46:59,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:46:59,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:46:59,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:46:59,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:46:59,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,409 INFO L138 Inliner]: procedures = 42, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-12-16 04:46:59,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:46:59,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:46:59,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:46:59,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:46:59,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,435 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 10, 1]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-12-16 04:46:59,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:46:59,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:46:59,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:46:59,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:46:59,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (1/1) ... [2023-12-16 04:46:59,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:46:59,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:46:59,482 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) [2023-12-16 04:46:59,511 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 [2023-12-16 04:46:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:46:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 04:46:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:46:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:46:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 04:46:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:46:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:46:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 04:46:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:46:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:46:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 04:46:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:46:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:46:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:46:59,606 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:46:59,607 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:46:59,839 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:46:59,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:46:59,860 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 04:46:59,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:46:59 BoogieIcfgContainer [2023-12-16 04:46:59,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:46:59,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:46:59,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:46:59,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:46:59,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:46:59" (1/3) ... [2023-12-16 04:46:59,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad6a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:46:59, skipping insertion in model container [2023-12-16 04:46:59,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:59" (2/3) ... [2023-12-16 04:46:59,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad6a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:46:59, skipping insertion in model container [2023-12-16 04:46:59,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:46:59" (3/3) ... [2023-12-16 04:46:59,869 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2023-12-16 04:46:59,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:46:59,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:46:59,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:46:59,916 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;@2d9cd3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:46:59,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:46:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 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) [2023-12-16 04:46:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 04:46:59,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:46:59,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:46:59,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:46:59,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:46:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1386192734, now seen corresponding path program 1 times [2023-12-16 04:46:59,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:46:59,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127802253] [2023-12-16 04:46:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:46:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:00,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127802253] [2023-12-16 04:47:00,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127802253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:47:00,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:47:00,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:47:00,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702271981] [2023-12-16 04:47:00,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:47:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:47:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:47:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:47:00,196 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 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) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:00,239 INFO L93 Difference]: Finished difference Result 61 states and 97 transitions. [2023-12-16 04:47:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:47:00,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-16 04:47:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:00,246 INFO L225 Difference]: With dead ends: 61 [2023-12-16 04:47:00,246 INFO L226 Difference]: Without dead ends: 29 [2023-12-16 04:47:00,248 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 [2023-12-16 04:47:00,253 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:00,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:47:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-16 04:47:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-16 04:47:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2023-12-16 04:47:00,280 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 18 [2023-12-16 04:47:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:00,280 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2023-12-16 04:47:00,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-12-16 04:47:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:47:00,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:00,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:00,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:47:00,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:00,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:00,282 INFO L85 PathProgramCache]: Analyzing trace with hash 46573218, now seen corresponding path program 1 times [2023-12-16 04:47:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:00,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58334952] [2023-12-16 04:47:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58334952] [2023-12-16 04:47:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58334952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765279977] [2023-12-16 04:47:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:00,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:00,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:00,377 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) [2023-12-16 04:47:00,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:47:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:00,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:47:00,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 04:47:00,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:47:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765279977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:47:00,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:47:00,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 04:47:00,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871206906] [2023-12-16 04:47:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:47:00,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:47:00,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:00,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:47:00,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:47:00,457 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:00,473 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2023-12-16 04:47:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:47:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-16 04:47:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:00,474 INFO L225 Difference]: With dead ends: 54 [2023-12-16 04:47:00,474 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 04:47:00,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:47:00,477 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:00,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:47:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 04:47:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 04:47:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2023-12-16 04:47:00,480 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 23 [2023-12-16 04:47:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:00,481 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2023-12-16 04:47:00,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2023-12-16 04:47:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:47:00,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:00,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:00,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:00,689 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 [2023-12-16 04:47:00,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:00,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1233290460, now seen corresponding path program 1 times [2023-12-16 04:47:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565309813] [2023-12-16 04:47:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565309813] [2023-12-16 04:47:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565309813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870280844] [2023-12-16 04:47:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:00,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:00,756 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) [2023-12-16 04:47:00,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:47:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:00,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:47:00,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 04:47:00,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:47:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870280844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:47:00,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:47:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-16 04:47:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565812642] [2023-12-16 04:47:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:47:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:47:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:47:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:47:00,954 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:01,046 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2023-12-16 04:47:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:47:01,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-16 04:47:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:01,051 INFO L225 Difference]: With dead ends: 77 [2023-12-16 04:47:01,051 INFO L226 Difference]: Without dead ends: 52 [2023-12-16 04:47:01,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:47:01,052 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:01,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 85 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:47:01,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-16 04:47:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 34. [2023-12-16 04:47:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2023-12-16 04:47:01,055 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 23 [2023-12-16 04:47:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:01,056 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2023-12-16 04:47:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2023-12-16 04:47:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:47:01,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:01,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:01,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:01,257 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 [2023-12-16 04:47:01,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:01,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1174185116, now seen corresponding path program 1 times [2023-12-16 04:47:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325765298] [2023-12-16 04:47:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:01,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:01,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325765298] [2023-12-16 04:47:01,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325765298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:01,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229036043] [2023-12-16 04:47:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:01,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:01,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:01,317 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) [2023-12-16 04:47:01,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:47:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:01,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:47:01,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:01,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:47:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:01,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229036043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:47:01,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:47:01,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-16 04:47:01,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242310688] [2023-12-16 04:47:01,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:47:01,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:47:01,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:47:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:47:01,401 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 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) [2023-12-16 04:47:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:01,419 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2023-12-16 04:47:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:47:01,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 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) Word has length 23 [2023-12-16 04:47:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:01,420 INFO L225 Difference]: With dead ends: 68 [2023-12-16 04:47:01,420 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 04:47:01,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:47:01,421 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 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 [2023-12-16 04:47:01,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:47:01,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 04:47:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-16 04:47:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-12-16 04:47:01,424 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 23 [2023-12-16 04:47:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:01,425 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-12-16 04:47:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 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) [2023-12-16 04:47:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-12-16 04:47:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 04:47:01,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:01,425 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:01,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:01,630 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 [2023-12-16 04:47:01,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:01,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -402603561, now seen corresponding path program 2 times [2023-12-16 04:47:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:01,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569572496] [2023-12-16 04:47:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:01,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 04:47:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:01,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569572496] [2023-12-16 04:47:01,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569572496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:47:01,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:47:01,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:47:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458591465] [2023-12-16 04:47:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:47:01,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:47:01,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:47:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:47:01,725 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:01,736 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2023-12-16 04:47:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:47:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-16 04:47:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:01,736 INFO L225 Difference]: With dead ends: 37 [2023-12-16 04:47:01,737 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:47:01,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:47:01,737 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:01,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:47:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:47:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:47:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:47:01,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2023-12-16 04:47:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:01,739 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:47:01,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:47:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:47:01,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:47:01,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:47:01,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:47:01,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:47:01,750 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2023-12-16 04:47:01,750 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2023-12-16 04:47:01,750 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2023-12-16 04:47:01,750 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2023-12-16 04:47:01,751 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2023-12-16 04:47:01,751 INFO L902 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2023-12-16 04:47:01,751 INFO L899 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2023-12-16 04:47:01,751 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 04:47:01,751 INFO L899 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2023-12-16 04:47:01,751 INFO L902 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2023-12-16 04:47:01,751 INFO L899 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2023-12-16 04:47:01,751 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L902 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,752 INFO L899 garLoopResultBuilder]: For program point L66-1(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L66-3(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L66-4(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L66-6(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L66-8(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L66-9(line 66) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point parse_expression_list_returnLabel#1(lines 58 86) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2023-12-16 04:47:01,753 INFO L902 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: true [2023-12-16 04:47:01,753 INFO L899 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2023-12-16 04:47:01,756 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-12-16 04:47:01,757 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:47:01,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:47:01 BoogieIcfgContainer [2023-12-16 04:47:01,764 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:47:01,764 INFO L158 Benchmark]: Toolchain (without parser) took 2597.23ms. Allocated memory is still 300.9MB. Free memory was 250.7MB in the beginning and 176.5MB in the end (delta: 74.2MB). Peak memory consumption was 75.6MB. Max. memory is 8.0GB. [2023-12-16 04:47:01,764 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:47:01,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.54ms. Allocated memory is still 300.9MB. Free memory was 250.7MB in the beginning and 238.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 04:47:01,765 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.64ms. Allocated memory is still 300.9MB. Free memory was 238.2MB in the beginning and 236.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:47:01,765 INFO L158 Benchmark]: Boogie Preprocessor took 36.14ms. Allocated memory is still 300.9MB. Free memory was 236.2MB in the beginning and 234.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:47:01,765 INFO L158 Benchmark]: RCFGBuilder took 414.11ms. Allocated memory is still 300.9MB. Free memory was 234.1MB in the beginning and 217.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 04:47:01,765 INFO L158 Benchmark]: TraceAbstraction took 1901.50ms. Allocated memory is still 300.9MB. Free memory was 216.2MB in the beginning and 176.5MB in the end (delta: 39.8MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. [2023-12-16 04:47:01,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.54ms. Allocated memory is still 300.9MB. Free memory was 250.7MB in the beginning and 238.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.64ms. Allocated memory is still 300.9MB. Free memory was 238.2MB in the beginning and 236.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.14ms. Allocated memory is still 300.9MB. Free memory was 236.2MB in the beginning and 234.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 414.11ms. Allocated memory is still 300.9MB. Free memory was 234.1MB in the beginning and 217.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1901.50ms. Allocated memory is still 300.9MB. Free memory was 216.2MB in the beginning and 176.5MB in the end (delta: 39.8MB). Peak memory consumption was 41.0MB. 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 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 373 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 158 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 2 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 12/17 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-16 04:47:01,779 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 Received shutdown request...