/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 -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 0.1.25-72570d3 [2020-08-22 16:58:04,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:58:04,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:58:04,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:58:04,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:58:04,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:58:04,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:58:04,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:58:04,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:58:04,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:58:04,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:58:04,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:58:04,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:58:04,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:58:04,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:58:04,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:58:04,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:58:04,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:58:04,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:58:04,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:58:04,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:58:04,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:58:04,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:58:04,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:58:04,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:58:04,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:58:04,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:58:04,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:58:04,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:58:04,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:58:04,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:58:04,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:58:04,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:58:04,322 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:58:04,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:58:04,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:58:04,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:58:04,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:58:04,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:58:04,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:58:04,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:58:04,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:58:04,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:58:04,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:58:04,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:58:04,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:58:04,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:58:04,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:58:04,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:58:04,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:58:04,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:58:04,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:58:04,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:58:04,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:58:04,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:58:04,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:58:04,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:58:04,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:58:04,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:58:04,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:58:04,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:58:04,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:58:04,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:58:04,693 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:58:04,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-08-22 16:58:04,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba491d13/b821170549e64dc6abecb0198b38ebf5/FLAG69264ee29 [2020-08-22 16:58:05,232 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:58:05,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-08-22 16:58:05,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba491d13/b821170549e64dc6abecb0198b38ebf5/FLAG69264ee29 [2020-08-22 16:58:05,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba491d13/b821170549e64dc6abecb0198b38ebf5 [2020-08-22 16:58:05,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:58:05,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:58:05,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:58:05,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:58:05,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:58:05,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:05,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc3c06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05, skipping insertion in model container [2020-08-22 16:58:05,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:05,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:58:05,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:58:05,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:58:05,923 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:58:05,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:58:05,957 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:58:05,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05 WrapperNode [2020-08-22 16:58:05,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:58:05,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:58:05,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:58:05,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:58:05,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:05,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:06,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:06,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:06,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:06,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:06,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... [2020-08-22 16:58:06,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:58:06,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:58:06,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:58:06,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:58:06,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:58:06,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:58:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:58:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:58:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:58:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:58:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:58:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:58:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:58:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:58:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:58:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:58:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:58:06,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:58:06,357 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:58:06,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:58:06 BoogieIcfgContainer [2020-08-22 16:58:06,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:58:06,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:58:06,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:58:06,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:58:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:58:05" (1/3) ... [2020-08-22 16:58:06,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14095681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:58:06, skipping insertion in model container [2020-08-22 16:58:06,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:05" (2/3) ... [2020-08-22 16:58:06,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14095681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:58:06, skipping insertion in model container [2020-08-22 16:58:06,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:58:06" (3/3) ... [2020-08-22 16:58:06,369 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-08-22 16:58:06,380 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:58:06,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:58:06,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:58:06,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:58:06,475 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:58:06,475 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:58:06,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:58:06,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:58:06,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:58:06,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:58:06,476 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:58:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-22 16:58:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:58:06,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:06,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:06,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash 489049782, now seen corresponding path program 1 times [2020-08-22 16:58:06,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:06,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121893181] [2020-08-22 16:58:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:06,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121893181] [2020-08-22 16:58:06,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:58:06,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:58:06,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80068766] [2020-08-22 16:58:06,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:58:06,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:06,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:58:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:58:06,840 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-22 16:58:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:07,047 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-22 16:58:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:58:07,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-08-22 16:58:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:07,060 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:58:07,061 INFO L226 Difference]: Without dead ends: 16 [2020-08-22 16:58:07,064 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 [2020-08-22 16:58:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-22 16:58:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-22 16:58:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-22 16:58:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-22 16:58:07,106 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-08-22 16:58:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:07,107 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-22 16:58:07,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:58:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-22 16:58:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 16:58:07,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:07,109 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:07,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:58:07,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:07,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:07,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1823317113, now seen corresponding path program 1 times [2020-08-22 16:58:07,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:07,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409811492] [2020-08-22 16:58:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:07,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:07,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409811492] [2020-08-22 16:58:07,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117784831] [2020-08-22 16:58:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:07,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2020-08-22 16:58:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:07,412 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:07,420 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:07,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:07,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-08-22 16:58:07,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787288612] [2020-08-22 16:58:07,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:58:07,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:07,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:58:07,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:58:07,473 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-08-22 16:58:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:07,607 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-08-22 16:58:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:58:07,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-08-22 16:58:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:07,609 INFO L225 Difference]: With dead ends: 21 [2020-08-22 16:58:07,609 INFO L226 Difference]: Without dead ends: 18 [2020-08-22 16:58:07,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:58:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-22 16:58:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-22 16:58:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-22 16:58:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-08-22 16:58:07,623 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-08-22 16:58:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:07,624 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-08-22 16:58:07,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:58:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-08-22 16:58:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:58:07,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:07,628 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:07,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:58:07,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -140999300, now seen corresponding path program 2 times [2020-08-22 16:58:07,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:07,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39699267] [2020-08-22 16:58:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:58:07,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39699267] [2020-08-22 16:58:07,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:58:07,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:58:07,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646355468] [2020-08-22 16:58:07,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:58:07,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:07,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:58:07,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:58:07,987 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-08-22 16:58:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:08,032 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-08-22 16:58:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:58:08,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-22 16:58:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:08,033 INFO L225 Difference]: With dead ends: 18 [2020-08-22 16:58:08,033 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:58:08,034 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 [2020-08-22 16:58:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:58:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:58:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:58:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:58:08,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-22 16:58:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:08,036 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:58:08,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:58:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:58:08,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:58:08,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:58:08,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:58:08,085 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:58:08,085 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)|)) [2020-08-22 16:58:08,086 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:58:08,086 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:58:08,086 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:58:08,086 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:58:08,086 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:58:08,086 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-22 16:58:08,087 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 16:58:08,087 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-22 16:58:08,087 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-22 16:58:08,087 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-08-22 16:58:08,087 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-08-22 16:58:08,088 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)) [2020-08-22 16:58:08,088 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-08-22 16:58:08,088 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-08-22 16:58:08,088 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-08-22 16:58:08,088 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-08-22 16:58:08,088 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-08-22 16:58:08,089 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-08-22 16:58:08,089 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-08-22 16:58:08,089 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-08-22 16:58:08,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:58:08 BoogieIcfgContainer [2020-08-22 16:58:08,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:58:08,112 INFO L168 Benchmark]: Toolchain (without parser) took 2455.12 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.4 MB in the beginning and 192.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:08,113 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:58:08,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.37 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:08,115 INFO L168 Benchmark]: Boogie Preprocessor took 119.05 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 93.3 MB in the beginning and 179.6 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:08,116 INFO L168 Benchmark]: RCFGBuilder took 283.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 166.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:08,118 INFO L168 Benchmark]: TraceAbstraction took 1746.65 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 166.9 MB in the beginning and 192.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:08,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.37 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.05 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 93.3 MB in the beginning and 179.6 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 283.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 166.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1746.65 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 166.9 MB in the beginning and 192.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.6 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: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 24 SDslu, 98 SDs, 0 SdLazy, 99 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 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, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2588 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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...