/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:36:34,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:36:34,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:36:34,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:36:34,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:36:34,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:36:34,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:36:34,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:36:34,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:36:34,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:36:34,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:36:34,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:36:34,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:36:34,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:36:34,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:36:34,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:36:34,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:36:34,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:36:34,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:36:34,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:36:34,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:36:34,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:36:34,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:36:34,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:36:34,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:36:34,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:36:34,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:36:34,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:36:34,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:36:34,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 15:36:34,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:36:34,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:36:34,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:36:34,274 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 [2020-08-18 15:36:34,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:36:34,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:36:34,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:36:34,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:36:34,299 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:36:34,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:36:34,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:36:34,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:36:34,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:36:34,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:36:34,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:36:34,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:36:34,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:36:34,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:36:34,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:36:34,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:36:34,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:36:34,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:36:34,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:36:34,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:36:34,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:36:34,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:36:34,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:36:34,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:36:34,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:36:34,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:36:34,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:36:34,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:36:34,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:36:34,304 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 -> false [2020-08-18 15:36:34,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:36:34,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:36:34,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:36:34,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:36:34,639 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:36:34,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-08-18 15:36:34,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94a88e622/b5f9f86df21747a9b3db6e92499b405a/FLAGd4d94db22 [2020-08-18 15:36:35,212 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:36:35,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-08-18 15:36:35,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94a88e622/b5f9f86df21747a9b3db6e92499b405a/FLAGd4d94db22 [2020-08-18 15:36:35,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94a88e622/b5f9f86df21747a9b3db6e92499b405a [2020-08-18 15:36:35,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:36:35,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:36:35,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:36:35,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:36:35,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:36:35,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5728a2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35, skipping insertion in model container [2020-08-18 15:36:35,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:36:35,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:36:35,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:36:35,820 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:36:35,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:36:35,855 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:36:35,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35 WrapperNode [2020-08-18 15:36:35,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:36:35,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:36:35,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:36:35,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:36:35,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (1/1) ... [2020-08-18 15:36:35,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:36:35,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:36:35,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:36:35,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:36:35,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (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 [2020-08-18 15:36:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:36:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:36:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 15:36:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:36:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:36:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:36:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 15:36:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 15:36:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:36:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:36:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:36:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:36:36,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:36:36,239 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 15:36:36,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:36:36 BoogieIcfgContainer [2020-08-18 15:36:36,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:36:36,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:36:36,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:36:36,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:36:36,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:36:35" (1/3) ... [2020-08-18 15:36:36,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee71e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:36:36, skipping insertion in model container [2020-08-18 15:36:36,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:35" (2/3) ... [2020-08-18 15:36:36,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee71e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:36:36, skipping insertion in model container [2020-08-18 15:36:36,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:36:36" (3/3) ... [2020-08-18 15:36:36,252 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-08-18 15:36:36,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:36:36,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:36:36,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:36:36,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:36:36,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:36:36,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:36:36,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:36:36,325 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:36:36,325 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:36:36,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:36:36,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:36:36,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-18 15:36:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 15:36:36,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:36,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:36,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 489049782, now seen corresponding path program 1 times [2020-08-18 15:36:36,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:36,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68186555] [2020-08-18 15:36:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:36:36,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68186555] [2020-08-18 15:36:36,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:36,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:36,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136280095] [2020-08-18 15:36:36,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:36,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:36,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:36,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:36,638 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-18 15:36:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:36,802 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-18 15:36:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:36:36,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-08-18 15:36:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:36,815 INFO L225 Difference]: With dead ends: 33 [2020-08-18 15:36:36,815 INFO L226 Difference]: Without dead ends: 16 [2020-08-18 15:36:36,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:36:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-18 15:36:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-18 15:36:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-18 15:36:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-18 15:36:36,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-08-18 15:36:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:36,858 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-18 15:36:36,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-18 15:36:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 15:36:36,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:36,859 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:36,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:36:36,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1823317113, now seen corresponding path program 1 times [2020-08-18 15:36:36,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:36,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898467306] [2020-08-18 15:36:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:36:36,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898467306] [2020-08-18 15:36:36,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:36,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 15:36:36,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18087122] [2020-08-18 15:36:36,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:36:36,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:36:36,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:36:36,995 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-08-18 15:36:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:37,079 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-08-18 15:36:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:37,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-08-18 15:36:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:37,081 INFO L225 Difference]: With dead ends: 21 [2020-08-18 15:36:37,081 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 15:36:37,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:36:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 15:36:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-18 15:36:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-18 15:36:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-08-18 15:36:37,088 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-08-18 15:36:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:37,089 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-08-18 15:36:37,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:36:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-08-18 15:36:37,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 15:36:37,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:37,090 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:37,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:36:37,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:37,091 INFO L82 PathProgramCache]: Analyzing trace with hash -140999300, now seen corresponding path program 2 times [2020-08-18 15:36:37,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:37,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429131070] [2020-08-18 15:36:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 15:36:37,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429131070] [2020-08-18 15:36:37,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:37,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:37,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762640947] [2020-08-18 15:36:37,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:37,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:37,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:37,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:37,198 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-08-18 15:36:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:37,244 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-08-18 15:36:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:36:37,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-18 15:36:37,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:37,246 INFO L225 Difference]: With dead ends: 18 [2020-08-18 15:36:37,246 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:36:37,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:36:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:36:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:36:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:36:37,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-18 15:36:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:37,249 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:36:37,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:36:37,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:36:37,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:36:37,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:36:37,302 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:36:37,302 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-08-18 15:36:37,302 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:36:37,303 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:36:37,303 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 15:36:37,303 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 15:36:37,303 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:36:37,304 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:36:37,304 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 15:36:37,304 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:36:37,304 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:36:37,304 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-08-18 15:36:37,305 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-08-18 15:36:37,305 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-08-18 15:36:37,305 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-08-18 15:36:37,305 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-08-18 15:36:37,306 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-08-18 15:36:37,306 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-08-18 15:36:37,306 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-08-18 15:36:37,306 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-08-18 15:36:37,306 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-08-18 15:36:37,307 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-08-18 15:36:37,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:36:37 BoogieIcfgContainer [2020-08-18 15:36:37,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:36:37,332 INFO L168 Benchmark]: Toolchain (without parser) took 1750.35 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 103.8 MB in the beginning and 97.4 MB in the end (delta: 6.4 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:37,333 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:36:37,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.80 ms. Allocated memory is still 142.1 MB. Free memory was 103.6 MB in the beginning and 93.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:37,335 INFO L168 Benchmark]: Boogie Preprocessor took 134.39 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 93.3 MB in the beginning and 182.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:37,336 INFO L168 Benchmark]: RCFGBuilder took 253.06 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 169.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:37,337 INFO L168 Benchmark]: TraceAbstraction took 1083.06 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 97.4 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:37,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.80 ms. Allocated memory is still 142.1 MB. Free memory was 103.6 MB in the beginning and 93.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.39 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 93.3 MB in the beginning and 182.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.06 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 169.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1083.06 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 97.4 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 24 SDslu, 90 SDs, 0 SdLazy, 91 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 5 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1916 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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...