/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:24:17,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:24:17,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:24:17,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:24:17,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:24:17,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:24:17,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:24:17,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:24:17,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:24:17,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:24:17,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:24:17,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:24:17,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:24:17,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:24:17,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:24:17,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:24:17,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:24:17,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:24:17,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:24:17,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:24:17,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:24:17,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:24:17,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:24:17,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:24:17,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:24:17,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:24:17,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:24:17,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:24:17,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:24:17,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:24:17,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:24:17,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:24:17,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:24:17,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:24:17,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:24:17,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:24:17,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:24:17,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:24:17,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:24:17,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:24:17,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:24:17,319 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:24:17,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:24:17,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:24:17,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:24:17,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:24:17,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:24:17,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:24:17,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:24:17,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:24:17,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:24:17,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:24:17,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:24:17,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:24:17,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:24:17,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:24:17,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:24:17,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:24:17,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:24:17,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:24:17,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:24:17,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:24:17,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:24:17,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:24:17,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:24:17,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:24:17,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:24:17,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:24:17,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:24:17,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:24:17,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:24:17,702 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:24:17,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2020-08-19 04:24:17,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7500b3c3f/02ffc0e34a184b5d9facb58ed32ccfda/FLAGe421fabf3 [2020-08-19 04:24:18,208 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:24:18,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test28-2.c [2020-08-19 04:24:18,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7500b3c3f/02ffc0e34a184b5d9facb58ed32ccfda/FLAGe421fabf3 [2020-08-19 04:24:18,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7500b3c3f/02ffc0e34a184b5d9facb58ed32ccfda [2020-08-19 04:24:18,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:24:18,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:24:18,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:18,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:24:18,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:24:18,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78541603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18, skipping insertion in model container [2020-08-19 04:24:18,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:24:18,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:24:18,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:18,807 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:24:18,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:18,842 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:24:18,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18 WrapperNode [2020-08-19 04:24:18,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:18,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:24:18,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:24:18,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:24:18,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... [2020-08-19 04:24:18,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:24:18,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:24:18,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:24:18,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:24:18,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:24:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:24:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:24:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:24:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:24:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:24:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:24:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:24:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:24:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:24:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:24:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:24:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:24:19,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:24:19,251 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 04:24:19,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:19 BoogieIcfgContainer [2020-08-19 04:24:19,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:24:19,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:24:19,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:24:19,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:24:19,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:24:18" (1/3) ... [2020-08-19 04:24:19,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308aca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:19, skipping insertion in model container [2020-08-19 04:24:19,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:18" (2/3) ... [2020-08-19 04:24:19,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308aca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:19, skipping insertion in model container [2020-08-19 04:24:19,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:19" (3/3) ... [2020-08-19 04:24:19,264 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2020-08-19 04:24:19,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:24:19,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:24:19,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:24:19,318 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:24:19,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:24:19,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:24:19,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:24:19,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:24:19,319 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:24:19,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:24:19,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:24:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-19 04:24:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 04:24:19,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:19,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:19,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:24:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-08-19 04:24:19,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:19,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263041273] [2020-08-19 04:24:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:24:19,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263041273] [2020-08-19 04:24:19,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:19,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:24:19,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437436170] [2020-08-19 04:24:19,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:24:19,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:19,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:24:19,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:19,646 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-08-19 04:24:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:19,757 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-08-19 04:24:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:24:19,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 04:24:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:19,771 INFO L225 Difference]: With dead ends: 34 [2020-08-19 04:24:19,771 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 04:24:19,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 04:24:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2020-08-19 04:24:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 04:24:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-19 04:24:19,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-08-19 04:24:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:19,825 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-19 04:24:19,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:24:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-19 04:24:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 04:24:19,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:19,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:19,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:24:19,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:24:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2020-08-19 04:24:19,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:19,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580976231] [2020-08-19 04:24:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:24:19,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580976231] [2020-08-19 04:24:19,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:19,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:24:19,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212680021] [2020-08-19 04:24:19,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:24:19,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:24:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:24:19,984 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-08-19 04:24:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:20,100 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-08-19 04:24:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:24:20,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-19 04:24:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:20,102 INFO L225 Difference]: With dead ends: 23 [2020-08-19 04:24:20,102 INFO L226 Difference]: Without dead ends: 14 [2020-08-19 04:24:20,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:24:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-19 04:24:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-19 04:24:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-19 04:24:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-08-19 04:24:20,109 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-08-19 04:24:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:20,110 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-08-19 04:24:20,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:24:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-08-19 04:24:20,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 04:24:20,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:20,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:20,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:24:20,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:24:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:20,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-08-19 04:24:20,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:20,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944389967] [2020-08-19 04:24:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:24:20,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944389967] [2020-08-19 04:24:20,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:20,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:24:20,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077581083] [2020-08-19 04:24:20,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:24:20,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:20,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:24:20,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:24:20,293 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 8 states. [2020-08-19 04:24:20,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:20,394 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-08-19 04:24:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:24:20,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-08-19 04:24:20,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:20,395 INFO L225 Difference]: With dead ends: 14 [2020-08-19 04:24:20,396 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:24:20,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:24:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:24:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:24:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:24:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:24:20,398 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-08-19 04:24:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:20,408 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:24:20,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:24:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:24:20,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:24:20,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:24:20,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:24:20,447 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:24:20,447 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 04:24:20,448 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:24:20,448 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:24:20,448 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:24:20,448 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:24:20,448 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:24:20,448 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2020-08-19 04:24:20,449 INFO L264 CegarLoopResult]: At program point L21(lines 11 28) the Hoare annotation is: false [2020-08-19 04:24:20,449 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-08-19 04:24:20,449 INFO L268 CegarLoopResult]: For program point L15-2(lines 15 19) no Hoare annotation was computed. [2020-08-19 04:24:20,449 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2020-08-19 04:24:20,449 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2020-08-19 04:24:20,450 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 28) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 04:24:20,450 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-08-19 04:24:20,450 INFO L268 CegarLoopResult]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2020-08-19 04:24:20,450 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-08-19 04:24:20,450 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-08-19 04:24:20,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:24:20 BoogieIcfgContainer [2020-08-19 04:24:20,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:24:20,464 INFO L168 Benchmark]: Toolchain (without parser) took 1873.10 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 103.3 MB in the beginning and 201.8 MB in the end (delta: -98.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:24:20,465 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.17 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,467 INFO L168 Benchmark]: Boogie Preprocessor took 128.31 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.2 MB in the beginning and 180.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,468 INFO L168 Benchmark]: RCFGBuilder took 283.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 166.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,469 INFO L168 Benchmark]: TraceAbstraction took 1204.31 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 201.8 MB in the end (delta: -35.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:24:20,473 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.17 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.31 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.2 MB in the beginning and 180.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 283.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 166.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1204.31 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 201.8 MB in the end (delta: -35.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 30 SDslu, 69 SDs, 0 SdLazy, 118 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...