/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/recursive-simple/fibo_2calls_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:32:56,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:32:56,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:32:56,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:32:56,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:32:56,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:32:56,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:32:56,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:32:56,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:32:56,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:32:56,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:32:56,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:32:56,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:32:56,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:32:56,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:32:56,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:32:56,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:32:56,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:32:56,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:32:56,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:32:56,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:32:56,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:32:56,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:32:56,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:32:56,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:32:56,538 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 16:32:56,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:32:56,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:32:56,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:32:56,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:32:56,566 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:32:56,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:32:56,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:32:56,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:32:56,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:32:56,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:32:56,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:32:56,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:32:56,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:32:56,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:32:56,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:32:56,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:32:56,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:32:56,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:32:56,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:32:56,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:32:56,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:32:56,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:32:56,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:32:56,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:32:56,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:32:56,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:32:56,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:32:56,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:32:56,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:32:56,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:32:56,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:32:56,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:32:56,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:32:56,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:32:56,898 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:32:56,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-1.c [2020-08-22 16:32:56,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb58433c/40abb18d161047338fbd413664075424/FLAGbcc2c3f2d [2020-08-22 16:32:57,431 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:32:57,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-1.c [2020-08-22 16:32:57,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb58433c/40abb18d161047338fbd413664075424/FLAGbcc2c3f2d [2020-08-22 16:32:57,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb58433c/40abb18d161047338fbd413664075424 [2020-08-22 16:32:57,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:32:57,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:32:57,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:32:57,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:32:57,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:32:57,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:57" (1/1) ... [2020-08-22 16:32:57,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc9351f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:57, skipping insertion in model container [2020-08-22 16:32:57,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:57" (1/1) ... [2020-08-22 16:32:57,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:32:57,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:32:58,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:32:58,179 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:32:58,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:32:58,218 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:32:58,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58 WrapperNode [2020-08-22 16:32:58,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:32:58,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:32:58,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:32:58,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:32:58,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (1/1) ... [2020-08-22 16:32:58,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:32:58,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:32:58,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:32:58,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:32:58,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (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 16:32:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:32:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:32:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-22 16:32:58,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-22 16:32:58,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:32:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:32:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:32:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-22 16:32:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-22 16:32:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:32:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:32:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:32:58,706 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:32:58,706 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:32:58,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:58 BoogieIcfgContainer [2020-08-22 16:32:58,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:32:58,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:32:58,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:32:58,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:32:58,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:32:57" (1/3) ... [2020-08-22 16:32:58,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30614354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:58, skipping insertion in model container [2020-08-22 16:32:58,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:58" (2/3) ... [2020-08-22 16:32:58,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30614354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:58, skipping insertion in model container [2020-08-22 16:32:58,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:58" (3/3) ... [2020-08-22 16:32:58,721 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-1.c [2020-08-22 16:32:58,733 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:32:58,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:32:58,759 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:32:58,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:32:58,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:32:58,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:32:58,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:32:58,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:32:58,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:32:58,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:32:58,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:32:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 16:32:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:32:58,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:32:58,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:32:58,833 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:32:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:32:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-22 16:32:58,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:32:58,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202901986] [2020-08-22 16:32:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:32:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:32:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:32:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,096 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 16:32:59,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202901986] [2020-08-22 16:32:59,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:32:59,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:32:59,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736792795] [2020-08-22 16:32:59,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:32:59,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:32:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:32:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:32:59,119 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-22 16:32:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:32:59,226 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-22 16:32:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:32:59,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 16:32:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:32:59,239 INFO L225 Difference]: With dead ends: 44 [2020-08-22 16:32:59,239 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 16:32:59,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 16:32:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 16:32:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 16:32:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:32:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 16:32:59,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-22 16:32:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:32:59,293 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 16:32:59,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:32:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 16:32:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:32:59,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:32:59,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:32:59,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:32:59,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:32:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:32:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-22 16:32:59,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:32:59,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114782256] [2020-08-22 16:32:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:32:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:32:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:32:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,364 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 16:32:59,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114782256] [2020-08-22 16:32:59,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:32:59,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:32:59,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743449893] [2020-08-22 16:32:59,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:32:59,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:32:59,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:32:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:32:59,369 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-22 16:32:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:32:59,446 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-22 16:32:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:32:59,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:32:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:32:59,449 INFO L225 Difference]: With dead ends: 36 [2020-08-22 16:32:59,449 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:32:59,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 16:32:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:32:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 16:32:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:32:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 16:32:59,460 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-22 16:32:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:32:59,461 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 16:32:59,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:32:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 16:32:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:32:59,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:32:59,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:32:59,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:32:59,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:32:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:32:59,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-22 16:32:59,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:32:59,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84099349] [2020-08-22 16:32:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:32:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:32:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:32:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:32:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:32:59,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84099349] [2020-08-22 16:32:59,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523769739] [2020-08-22 16:32:59,640 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 16:32:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:59,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:32:59,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:32:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:32:59,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:32:59,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-08-22 16:32:59,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459711030] [2020-08-22 16:32:59,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:32:59,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:32:59,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:32:59,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:32:59,830 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 10 states. [2020-08-22 16:33:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:33:00,080 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-22 16:33:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:33:00,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-22 16:33:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:33:00,082 INFO L225 Difference]: With dead ends: 58 [2020-08-22 16:33:00,083 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 16:33:00,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:33:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 16:33:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 16:33:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:33:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-22 16:33:00,093 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-22 16:33:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:33:00,094 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-22 16:33:00,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:33:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-22 16:33:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:33:00,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:33:00,096 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:33:00,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:33:00,310 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:33:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:33:00,311 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-22 16:33:00,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:33:00,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618976100] [2020-08-22 16:33:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:33:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:33:00,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:33:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:33:00,341 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:33:00,357 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:33:00,357 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:33:00,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:33:00,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:33:00 BoogieIcfgContainer [2020-08-22 16:33:00,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:33:00,391 INFO L168 Benchmark]: Toolchain (without parser) took 2450.36 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.4 MB in the beginning and 188.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:33:00,392 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:33:00,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.34 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:33:00,394 INFO L168 Benchmark]: Boogie Preprocessor took 142.33 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:33:00,395 INFO L168 Benchmark]: RCFGBuilder took 348.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 167.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:33:00,396 INFO L168 Benchmark]: TraceAbstraction took 1675.28 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 188.4 MB in the end (delta: -20.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:33:00,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.34 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.33 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 167.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1675.28 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 188.4 MB in the end (delta: -20.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 2; VAL [x=2] [L37] CALL, EXPR fibo1(x) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) VAL [fibo1(x)=1, x=2] [L37] int result = fibo1(x); [L38] COND TRUE result == 1 VAL [result=1, x=2] [L39] __VERIFIER_error() VAL [result=1, x=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 259 SDs, 0 SdLazy, 179 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2689 SizeOfPredicates, 3 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...