/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:14:30,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:14:30,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:14:30,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:14:30,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:14:30,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:14:30,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:14:30,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:14:30,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:14:30,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:14:30,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:14:30,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:14:30,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:14:30,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:14:30,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:14:30,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:14:30,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:14:30,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:14:30,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:14:30,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:14:30,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:14:30,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:14:30,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:14:30,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:14:30,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:14:30,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:14:30,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:14:30,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:14:30,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:14:30,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:14:30,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:14:30,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:14:30,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:14:30,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:14:30,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:14:30,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:14:30,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:14:30,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:14:30,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:14:30,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:14:30,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:14:30,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:14:30,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:14:30,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:14:30,262 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:14:30,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:14:30,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:14:30,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:14:30,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:14:30,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:14:30,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:14:30,263 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:14:30,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:14:30,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:14:30,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:14:30,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:14:30,549 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:14:30,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-07-17 13:14:30,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1310dbc66/c5c5183fe7ef455086cdd1c6c26302d2/FLAGe9fe1caaa [2020-07-17 13:14:31,050 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:14:31,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-07-17 13:14:31,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1310dbc66/c5c5183fe7ef455086cdd1c6c26302d2/FLAGe9fe1caaa [2020-07-17 13:14:31,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1310dbc66/c5c5183fe7ef455086cdd1c6c26302d2 [2020-07-17 13:14:31,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:14:31,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:14:31,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:31,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:14:31,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:14:31,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714eb6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31, skipping insertion in model container [2020-07-17 13:14:31,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:14:31,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:14:31,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:31,675 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:14:31,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:31,705 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:14:31,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31 WrapperNode [2020-07-17 13:14:31,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:31,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:14:31,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:14:31,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:14:31,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (1/1) ... [2020-07-17 13:14:31,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:14:31,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:14:31,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:14:31,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:14:31,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (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 [2020-07-17 13:14:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:14:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:14:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-17 13:14:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:14:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:14:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:14:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-17 13:14:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:14:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:14:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:14:32,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:14:32,063 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 13:14:32,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:32 BoogieIcfgContainer [2020-07-17 13:14:32,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:14:32,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:14:32,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:14:32,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:14:32,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:14:31" (1/3) ... [2020-07-17 13:14:32,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4103e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:32, skipping insertion in model container [2020-07-17 13:14:32,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:31" (2/3) ... [2020-07-17 13:14:32,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4103e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:32, skipping insertion in model container [2020-07-17 13:14:32,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:32" (3/3) ... [2020-07-17 13:14:32,102 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-07-17 13:14:32,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:14:32,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:14:32,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:14:32,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:14:32,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:14:32,185 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:14:32,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:14:32,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:14:32,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:14:32,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:14:32,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:14:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-17 13:14:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 13:14:32,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:32,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:32,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:32,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-07-17 13:14:32,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:32,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438319431] [2020-07-17 13:14:32,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:32,472 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:32,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438319431] [2020-07-17 13:14:32,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:32,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:14:32,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604025894] [2020-07-17 13:14:32,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:14:32,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:32,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:14:32,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:14:32,494 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-07-17 13:14:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:32,601 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-07-17 13:14:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:14:32,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-17 13:14:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:32,614 INFO L225 Difference]: With dead ends: 48 [2020-07-17 13:14:32,614 INFO L226 Difference]: Without dead ends: 30 [2020-07-17 13:14:32,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:14:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-17 13:14:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-17 13:14:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 13:14:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-07-17 13:14:32,663 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-07-17 13:14:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:32,664 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-07-17 13:14:32,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:14:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-07-17 13:14:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 13:14:32,666 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:32,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:32,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:14:32,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:32,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-07-17 13:14:32,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:32,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899640399] [2020-07-17 13:14:32,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:32,742 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:32,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899640399] [2020-07-17 13:14:32,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:32,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:14:32,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460808619] [2020-07-17 13:14:32,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:14:32,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:32,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:14:32,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:14:32,746 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-07-17 13:14:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:32,813 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-07-17 13:14:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:14:32,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-17 13:14:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:32,815 INFO L225 Difference]: With dead ends: 38 [2020-07-17 13:14:32,816 INFO L226 Difference]: Without dead ends: 32 [2020-07-17 13:14:32,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:14:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-17 13:14:32,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-17 13:14:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 13:14:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-07-17 13:14:32,829 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-07-17 13:14:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:32,829 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-07-17 13:14:32,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:14:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-07-17 13:14:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 13:14:32,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:32,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:32,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:14:32,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-07-17 13:14:32,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:32,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050603490] [2020-07-17 13:14:32,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-17 13:14:33,138 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:33,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050603490] [2020-07-17 13:14:33,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:33,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-17 13:14:33,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993983961] [2020-07-17 13:14:33,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 13:14:33,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 13:14:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-07-17 13:14:33,141 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 14 states. [2020-07-17 13:14:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:33,371 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-07-17 13:14:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 13:14:33,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-07-17 13:14:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:33,373 INFO L225 Difference]: With dead ends: 53 [2020-07-17 13:14:33,373 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 13:14:33,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-07-17 13:14:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 13:14:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 13:14:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 13:14:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 13:14:33,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-07-17 13:14:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:33,376 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 13:14:33,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 13:14:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 13:14:33,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 13:14:33,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:14:33,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 13:14:33,697 INFO L264 CegarLoopResult]: At program point fibonacciFINAL(lines 16 24) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2020-07-17 13:14:33,697 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2020-07-17 13:14:33,698 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,698 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,698 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| 1) (< 0 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,698 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,699 INFO L264 CegarLoopResult]: At program point L19(lines 19 23) the Hoare annotation is: (and (< 0 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,699 INFO L264 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,699 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= |fibonacci_#in~n| 0) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,699 INFO L264 CegarLoopResult]: At program point L22-4(line 22) the Hoare annotation is: (and (<= 0 (+ |fibonacci_#t~ret1| 2147483648)) (< 1 fibonacci_~n) (<= |fibonacci_#t~ret1| 2147483647) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-17 13:14:33,699 INFO L264 CegarLoopResult]: At program point fibonacciEXIT(lines 16 24) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2020-07-17 13:14:33,699 INFO L264 CegarLoopResult]: At program point L17(lines 17 23) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2020-07-17 13:14:33,700 INFO L264 CegarLoopResult]: At program point L22-5(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (<= |fibonacci_#t~ret1| 2147483647) (= |fibonacci_#res| (+ |fibonacci_#t~ret1| |fibonacci_#t~ret0|)) (= fibonacci_~n |fibonacci_#in~n|) (<= 0 (+ |fibonacci_#t~ret1| 2147483648))) [2020-07-17 13:14:33,700 INFO L264 CegarLoopResult]: At program point L22-6(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (<= |fibonacci_#t~ret0| (+ |fibonacci_#res| 2147483648)) (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#res| (+ |fibonacci_#t~ret0| 2147483647))) [2020-07-17 13:14:33,700 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:14:33,700 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:14:33,700 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:14:33,701 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:14:33,701 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 13:14:33,701 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:14:33,701 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (= 5 main_~x~0) (<= main_~result~0 2147483647) (not (= 3 main_~result~0)) (<= 0 (+ main_~result~0 2147483648))) [2020-07-17 13:14:33,702 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) the Hoare annotation is: false [2020-07-17 13:14:33,702 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-17 13:14:33,702 INFO L264 CegarLoopResult]: At program point L30(lines 30 34) the Hoare annotation is: (or (and (<= 0 (+ main_~result~0 2147483648)) (<= main_~result~0 2147483647)) (<= main_~x~0 1)) [2020-07-17 13:14:33,702 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 27 35) the Hoare annotation is: true [2020-07-17 13:14:33,702 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-07-17 13:14:33,703 INFO L271 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-07-17 13:14:33,703 INFO L271 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-07-17 13:14:33,703 INFO L271 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-07-17 13:14:33,703 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (or (and (<= |main_#t~ret3| 2147483647) (<= 0 (+ |main_#t~ret3| 2147483648))) (<= main_~x~0 1)) [2020-07-17 13:14:33,703 INFO L264 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: (or (and (<= |main_#t~ret3| 2147483647) (= |main_#t~ret3| main_~result~0) (<= 0 (+ |main_#t~ret3| 2147483648))) (<= main_~x~0 1)) [2020-07-17 13:14:33,703 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 27 35) the Hoare annotation is: true [2020-07-17 13:14:33,704 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 27 35) the Hoare annotation is: true [2020-07-17 13:14:33,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:14:33 BoogieIcfgContainer [2020-07-17 13:14:33,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:14:33,724 INFO L168 Benchmark]: Toolchain (without parser) took 2266.15 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 103.3 MB in the beginning and 144.4 MB in the end (delta: -41.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:33,725 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 13:14:33,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.72 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:33,727 INFO L168 Benchmark]: Boogie Preprocessor took 24.50 ms. Allocated memory is still 145.8 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:33,728 INFO L168 Benchmark]: RCFGBuilder took 337.14 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 169.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:33,729 INFO L168 Benchmark]: TraceAbstraction took 1637.07 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 169.2 MB in the beginning and 144.4 MB in the end (delta: 24.8 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:33,732 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.72 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.50 ms. Allocated memory is still 145.8 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.14 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 169.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1637.07 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 169.2 MB in the beginning and 144.4 MB in the end (delta: 24.8 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: 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 - ProcedureContractResult [Line: 16]: Procedure Contract for fibonacci Derived contract for procedure fibonacci: n == \old(n) - ProcedureContractResult [Line: 27]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 55 SDslu, 237 SDs, 0 SdLazy, 182 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 89 PreInvPairs, 153 NumberOfFragments, 187 HoareAnnotationTreeSize, 89 FomulaSimplifications, 262 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...