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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 03:02:27,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 03:02:27,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 03:02:27,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 03:02:27,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 03:02:27,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 03:02:27,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 03:02:27,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 03:02:27,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 03:02:27,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 03:02:27,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 03:02:27,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-10 03:02:28,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 03:02:28,024 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 03:02:28,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 03:02:28,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 03:02:28,025 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 03:02:28,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 03:02:28,026 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 03:02:28,026 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 03:02:28,027 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 03:02:28,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 03:02:28,027 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 03:02:28,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 03:02:28,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 03:02:28,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 03:02:28,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 03:02:28,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 03:02:28,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 03:02:28,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 03:02:28,029 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 03:02:28,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 03:02:28,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 03:02:28,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 03:02:28,030 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 03:02:28,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 03:02:28,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 03:02:28,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 03:02:28,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 03:02:28,031 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 03:02:28,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 03:02:28,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 03:02:28,031 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 03:02:28,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 03:02:28,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 03:02:28,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 03:02:28,077 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 03:02:28,077 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 03:02:28,078 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2019-09-10 03:02:28,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd4298fc/0e22c806e1184a30af9df707199ca5ac/FLAGc4160895c [2019-09-10 03:02:28,575 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 03:02:28,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2019-09-10 03:02:28,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd4298fc/0e22c806e1184a30af9df707199ca5ac/FLAGc4160895c [2019-09-10 03:02:28,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd4298fc/0e22c806e1184a30af9df707199ca5ac [2019-09-10 03:02:28,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 03:02:28,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 03:02:28,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 03:02:28,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 03:02:28,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 03:02:28,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 03:02:28" (1/1) ... [2019-09-10 03:02:28,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e05795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:28, skipping insertion in model container [2019-09-10 03:02:28,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 03:02:28" (1/1) ... [2019-09-10 03:02:28,997 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 03:02:29,015 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 03:02:29,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 03:02:29,220 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 03:02:29,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 03:02:29,250 INFO L192 MainTranslator]: Completed translation [2019-09-10 03:02:29,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29 WrapperNode [2019-09-10 03:02:29,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 03:02:29,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 03:02:29,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 03:02:29,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 03:02:29,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (1/1) ... [2019-09-10 03:02:29,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 03:02:29,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 03:02:29,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 03:02:29,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 03:02:29,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (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 [2019-09-10 03:02:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 03:02:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 03:02:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-09-10 03:02:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-09-10 03:02:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 03:02:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 03:02:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 03:02:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-09-10 03:02:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-09-10 03:02:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 03:02:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 03:02:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 03:02:29,616 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 03:02:29,616 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 03:02:29,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 03:02:29 BoogieIcfgContainer [2019-09-10 03:02:29,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 03:02:29,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 03:02:29,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 03:02:29,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 03:02:29,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 03:02:28" (1/3) ... [2019-09-10 03:02:29,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c47706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 03:02:29, skipping insertion in model container [2019-09-10 03:02:29,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:02:29" (2/3) ... [2019-09-10 03:02:29,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c47706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 03:02:29, skipping insertion in model container [2019-09-10 03:02:29,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 03:02:29" (3/3) ... [2019-09-10 03:02:29,626 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2019-09-10 03:02:29,644 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 03:02:29,655 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 03:02:29,679 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 03:02:29,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 03:02:29,715 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 03:02:29,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 03:02:29,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 03:02:29,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 03:02:29,716 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 03:02:29,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 03:02:29,716 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 03:02:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-10 03:02:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 03:02:29,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:02:29,751 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:02:29,753 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:02:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:02:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2019-09-10 03:02:29,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:02:29,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:29,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:02:29,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:29,802 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:02:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:02:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 03:02:29,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 03:02:29,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 03:02:29,932 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:02:29,937 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 03:02:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 03:02:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:02:29,952 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-09-10 03:02:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:02:30,121 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-09-10 03:02:30,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 03:02:30,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-10 03:02:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:02:30,138 INFO L225 Difference]: With dead ends: 35 [2019-09-10 03:02:30,138 INFO L226 Difference]: Without dead ends: 30 [2019-09-10 03:02:30,142 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 03:02:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-10 03:02:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-09-10 03:02:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 03:02:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-10 03:02:30,212 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2019-09-10 03:02:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:02:30,213 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-10 03:02:30,213 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 03:02:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-10 03:02:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 03:02:30,218 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:02:30,219 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:02:30,220 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:02:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:02:30,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2019-09-10 03:02:30,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:02:30,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:30,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:02:30,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:30,226 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:02:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:02:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 03:02:30,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 03:02:30,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 03:02:30,294 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:02:30,297 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 03:02:30,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 03:02:30,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:02:30,298 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2019-09-10 03:02:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:02:30,372 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-09-10 03:02:30,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 03:02:30,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-10 03:02:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:02:30,375 INFO L225 Difference]: With dead ends: 32 [2019-09-10 03:02:30,375 INFO L226 Difference]: Without dead ends: 32 [2019-09-10 03:02:30,376 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 03:02:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-10 03:02:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-09-10 03:02:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 03:02:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-10 03:02:30,384 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2019-09-10 03:02:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:02:30,385 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-10 03:02:30,385 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 03:02:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-10 03:02:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-10 03:02:30,387 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:02:30,387 INFO L399 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] [2019-09-10 03:02:30,388 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:02:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:02:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2019-09-10 03:02:30,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:02:30,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:30,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:02:30,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:30,390 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:02:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:02:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 03:02:30,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:02:30,492 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:02:30,493 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2019-09-10 03:02:30,495 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [31], [32], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [56], [57], [58], [59] [2019-09-10 03:02:30,534 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 03:02:30,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 03:02:30,617 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 03:02:30,619 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Performed 8 root evaluator evaluations with a maximum evaluation depth of 3. Performed 8 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 5 variables. [2019-09-10 03:02:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:02:30,622 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 03:02:30,662 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2019-09-10 03:02:30,663 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 03:02:30,710 INFO L420 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-09-10 03:02:30,711 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 03:02:30,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 03:02:30,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-09-10 03:02:30,712 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:02:30,712 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 03:02:30,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 03:02:30,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 03:02:30,715 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2019-09-10 03:02:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:02:30,935 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-09-10 03:02:30,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 03:02:30,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-09-10 03:02:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:02:30,937 INFO L225 Difference]: With dead ends: 46 [2019-09-10 03:02:30,937 INFO L226 Difference]: Without dead ends: 46 [2019-09-10 03:02:30,938 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-10 03:02:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-10 03:02:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2019-09-10 03:02:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-10 03:02:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-09-10 03:02:30,948 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 26 [2019-09-10 03:02:30,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:02:30,948 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-09-10 03:02:30,948 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 03:02:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-09-10 03:02:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-10 03:02:30,950 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:02:30,950 INFO L399 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] [2019-09-10 03:02:30,950 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:02:30,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:02:30,951 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2019-09-10 03:02:30,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:02:30,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:30,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:02:30,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:02:30,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:02:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:02:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 03:02:31,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:02:31,193 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:02:31,193 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2019-09-10 03:02:31,194 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [25], [31], [32], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [56], [57], [58], [59] [2019-09-10 03:02:31,196 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 03:02:31,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 03:02:31,225 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 03:02:31,226 INFO L272 AbstractInterpreter]: Visited 24 different actions 28 times. Never merged. Never widened. Performed 25 root evaluator evaluations with a maximum evaluation depth of 3. Performed 25 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 5 variables. [2019-09-10 03:02:31,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:02:31,226 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 03:02:31,245 INFO L227 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 53.92% of their original sizes. [2019-09-10 03:02:31,246 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 03:02:31,389 INFO L420 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2019-09-10 03:02:31,389 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 03:02:31,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 03:02:31,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [9] total 23 [2019-09-10 03:02:31,390 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:02:31,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-10 03:02:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-10 03:02:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2019-09-10 03:02:31,391 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 16 states. [2019-09-10 03:02:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:02:31,964 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2019-09-10 03:02:31,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-10 03:02:31,964 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2019-09-10 03:02:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:02:31,965 INFO L225 Difference]: With dead ends: 26 [2019-09-10 03:02:31,966 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 03:02:31,966 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2019-09-10 03:02:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 03:02:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 03:02:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 03:02:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 03:02:31,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-09-10 03:02:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:02:31,968 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 03:02:31,968 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-10 03:02:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 03:02:31,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 03:02:31,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 03:02:31 BoogieIcfgContainer [2019-09-10 03:02:31,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 03:02:31,977 INFO L168 Benchmark]: Toolchain (without parser) took 2996.28 ms. Allocated memory was 132.6 MB in the beginning and 223.9 MB in the end (delta: 91.2 MB). Free memory was 88.5 MB in the beginning and 113.6 MB in the end (delta: -25.2 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2019-09-10 03:02:31,979 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 106.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-09-10 03:02:31,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.21 ms. Allocated memory is still 132.6 MB. Free memory was 88.3 MB in the beginning and 79.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-10 03:02:31,981 INFO L168 Benchmark]: Boogie Preprocessor took 111.97 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 79.1 MB in the beginning and 177.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-09-10 03:02:31,981 INFO L168 Benchmark]: RCFGBuilder took 254.55 ms. Allocated memory is still 200.3 MB. Free memory was 177.1 MB in the beginning and 164.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-09-10 03:02:31,982 INFO L168 Benchmark]: TraceAbstraction took 2356.20 ms. Allocated memory was 200.3 MB in the beginning and 223.9 MB in the end (delta: 23.6 MB). Free memory was 164.0 MB in the beginning and 113.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2019-09-10 03:02:31,987 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 106.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.21 ms. Allocated memory is still 132.6 MB. Free memory was 88.3 MB in the beginning and 79.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.97 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 79.1 MB in the beginning and 177.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.55 ms. Allocated memory is still 200.3 MB. Free memory was 177.1 MB in the beginning and 164.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2356.20 ms. Allocated memory was 200.3 MB in the beginning and 223.9 MB in the end (delta: 23.6 MB). Free memory was 164.0 MB in the beginning and 113.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 62 SDslu, 418 SDs, 0 SdLazy, 79 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.7728758169934642 AbsIntWeakeningRatio, 0.5490196078431373 AbsIntAvgWeakeningVarsNumRemoved, 0.5490196078431373 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 3910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...