java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 09:09:56,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 09:09:56,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 09:09:56,936 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 09:09:56,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 09:09:56,940 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 09:09:56,941 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 09:09:56,943 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 09:09:56,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 09:09:56,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 09:09:56,947 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 09:09:56,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 09:09:56,948 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 09:09:56,949 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 09:09:56,950 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 09:09:56,951 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 09:09:56,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 09:09:56,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 09:09:56,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 09:09:56,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 09:09:56,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 09:09:56,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 09:09:56,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 09:09:56,962 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 09:09:56,962 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 09:09:56,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 09:09:56,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 09:09:56,965 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 09:09:56,966 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 09:09:56,967 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 09:09:56,967 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 09:09:56,968 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 09:09:56,970 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 09:09:56,987 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 09:09:56,987 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 09:09:56,988 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 09:09:56,988 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 09:09:56,988 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 09:09:56,988 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 09:09:56,988 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 09:09:56,990 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 09:09:56,990 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 09:09:56,990 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 09:09:56,990 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 09:09:56,990 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 09:09:56,991 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 09:09:56,991 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 09:09:56,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 09:09:56,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 09:09:56,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 09:09:56,992 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 09:09:56,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 09:09:56,993 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 09:09:56,993 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 09:09:56,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 09:09:56,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 09:09:56,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 09:09:56,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 09:09:56,995 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 09:09:56,996 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 09:09:56,996 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 09:09:56,996 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 09:09:56,996 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 09:09:56,996 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 09:09:56,997 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 09:09:56,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 09:09:56,997 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 09:09:56,997 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 09:09:56,997 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 09:09:57,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 09:09:57,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 09:09:57,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 09:09:57,082 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 09:09:57,083 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 09:09:57,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i [2018-10-27 09:09:57,139 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5477e28c/f152deb7b12f4ffa978ef2a5bcfcee64/FLAG5ea623652 [2018-10-27 09:09:57,565 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 09:09:57,566 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i [2018-10-27 09:09:57,572 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5477e28c/f152deb7b12f4ffa978ef2a5bcfcee64/FLAG5ea623652 [2018-10-27 09:09:57,587 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5477e28c/f152deb7b12f4ffa978ef2a5bcfcee64 [2018-10-27 09:09:57,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 09:09:57,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 09:09:57,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 09:09:57,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 09:09:57,606 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 09:09:57,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa1fada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57, skipping insertion in model container [2018-10-27 09:09:57,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 09:09:57,641 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 09:09:57,814 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:09:57,819 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 09:09:57,835 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:09:57,851 INFO L193 MainTranslator]: Completed translation [2018-10-27 09:09:57,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57 WrapperNode [2018-10-27 09:09:57,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 09:09:57,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 09:09:57,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 09:09:57,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 09:09:57,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 09:09:57,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 09:09:57,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 09:09:57,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 09:09:57,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... [2018-10-27 09:09:57,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 09:09:57,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 09:09:57,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 09:09:57,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 09:09:57,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 09:09:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 09:09:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 09:09:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 09:09:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 09:09:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 09:09:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 09:09:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 09:09:58,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 09:09:58,198 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 09:09:58,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:09:58 BoogieIcfgContainer [2018-10-27 09:09:58,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 09:09:58,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 09:09:58,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 09:09:58,203 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 09:09:58,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 09:09:57" (1/3) ... [2018-10-27 09:09:58,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357918a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:09:58, skipping insertion in model container [2018-10-27 09:09:58,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:09:57" (2/3) ... [2018-10-27 09:09:58,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357918a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:09:58, skipping insertion in model container [2018-10-27 09:09:58,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:09:58" (3/3) ... [2018-10-27 09:09:58,207 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call1.i [2018-10-27 09:09:58,216 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 09:09:58,223 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 09:09:58,237 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 09:09:58,269 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 09:09:58,270 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 09:09:58,270 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 09:09:58,270 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 09:09:58,270 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 09:09:58,270 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 09:09:58,270 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 09:09:58,271 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 09:09:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-27 09:09:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 09:09:58,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:09:58,299 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:09:58,302 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:09:58,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:09:58,307 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-27 09:09:58,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:09:58,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:09:58,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:09:58,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:09:58,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:09:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:09:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 09:09:58,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:09:58,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 09:09:58,435 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:09:58,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 09:09:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 09:09:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 09:09:58,455 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-27 09:09:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:09:58,477 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-27 09:09:58,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 09:09:58,479 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-27 09:09:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:09:58,489 INFO L225 Difference]: With dead ends: 29 [2018-10-27 09:09:58,489 INFO L226 Difference]: Without dead ends: 12 [2018-10-27 09:09:58,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 09:09:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-27 09:09:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-27 09:09:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 09:09:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-27 09:09:58,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-27 09:09:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:09:58,530 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-27 09:09:58,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 09:09:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-27 09:09:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 09:09:58,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:09:58,531 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:09:58,532 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:09:58,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:09:58,532 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-27 09:09:58,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:09:58,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:09:58,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:09:58,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:09:58,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:09:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:09:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 09:09:58,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:09:58,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 09:09:58,724 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:09:58,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 09:09:58,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 09:09:58,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 09:09:58,733 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-10-27 09:09:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:09:58,783 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-27 09:09:58,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 09:09:58,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-27 09:09:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:09:58,785 INFO L225 Difference]: With dead ends: 19 [2018-10-27 09:09:58,785 INFO L226 Difference]: Without dead ends: 14 [2018-10-27 09:09:58,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 09:09:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-27 09:09:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 09:09:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 09:09:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-27 09:09:58,794 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-27 09:09:58,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:09:58,794 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-27 09:09:58,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 09:09:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-27 09:09:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 09:09:58,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:09:58,795 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:09:58,795 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:09:58,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:09:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-10-27 09:09:58,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:09:58,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:09:58,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:09:58,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:09:58,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:09:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:09:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 09:09:59,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 09:09:59,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 09:09:59,062 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-10-27 09:09:59,065 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-10-27 09:09:59,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 09:09:59,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 09:09:59,260 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 09:09:59,262 INFO L272 AbstractInterpreter]: Visited 11 different actions 17 times. Merged at 2 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-10-27 09:09:59,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:09:59,282 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 09:09:59,353 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-10-27 09:09:59,353 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 09:09:59,441 INFO L415 sIntCurrentIteration]: We unified 12 AI predicates to 12 [2018-10-27 09:09:59,441 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 09:09:59,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 09:09:59,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-10-27 09:09:59,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:09:59,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 09:09:59,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 09:09:59,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-27 09:09:59,444 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-10-27 09:09:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:09:59,562 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-27 09:09:59,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 09:09:59,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-27 09:09:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:09:59,563 INFO L225 Difference]: With dead ends: 14 [2018-10-27 09:09:59,563 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 09:09:59,564 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-27 09:09:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 09:09:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 09:09:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 09:09:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 09:09:59,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-27 09:09:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:09:59,565 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 09:09:59,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 09:09:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 09:09:59,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 09:09:59,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 09:09:59,692 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 09:09:59,692 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:09:59,692 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:09:59,692 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 09:09:59,693 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 09:09:59,693 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 09:09:59,693 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-10-27 09:09:59,693 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-10-27 09:09:59,693 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-10-27 09:09:59,693 INFO L425 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-10-27 09:09:59,694 INFO L421 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-10-27 09:09:59,694 INFO L421 ceAbstractionStarter]: At program point L10-4(lines 10 12) the Hoare annotation is: (and (not (= main_~x~0 0)) (= (mod main_~x~0 2) 0)) [2018-10-27 09:09:59,694 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-27 09:09:59,694 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-27 09:09:59,694 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-27 09:09:59,694 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-27 09:09:59,694 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-27 09:09:59,695 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-27 09:09:59,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 09:09:59 BoogieIcfgContainer [2018-10-27 09:09:59,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 09:09:59,702 INFO L168 Benchmark]: Toolchain (without parser) took 2102.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -731.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2018-10-27 09:09:59,704 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 09:09:59,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-27 09:09:59,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 09:09:59,706 INFO L168 Benchmark]: Boogie Preprocessor took 21.49 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 09:09:59,707 INFO L168 Benchmark]: RCFGBuilder took 303.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-10-27 09:09:59,708 INFO L168 Benchmark]: TraceAbstraction took 1501.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2018-10-27 09:09:59,713 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.49 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 303.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1501.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 3 SDslu, 30 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 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, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8333333333333334 AbsIntWeakeningRatio, 0.25 AbsIntAvgWeakeningVarsNumRemoved, 0.08333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 20 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...