/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:53:36,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:53:36,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:53:36,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:53:36,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:53:36,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:53:36,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:53:36,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:53:36,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:53:36,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:53:36,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:53:36,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:53:36,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:53:36,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:53:36,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:53:36,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:53:36,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:53:36,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:53:36,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:53:36,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:53:36,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:53:36,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:53:36,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:53:36,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:53:36,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 19:53:36,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:53:36,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:53:36,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:53:36,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:53:36,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:53:36,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:53:36,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:53:36,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:53:36,610 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:53:36,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:53:36,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:53:36,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:53:36,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:53:36,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:53:36,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:53:36,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:53:36,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:53:36,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:53:36,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:53:36,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:53:36,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:53:36,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:53:36,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:53:36,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:53:36,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:53:36,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:53:36,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:53:36,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:53:36,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:53:36,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:53:36,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:53:36,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:53:36,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:53:36,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:53:36,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:53:36,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:53:36,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:53:36,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:53:36,971 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:53:36,972 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-08-21 19:53:37,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf8e4339/e197b98d7fe14f6383dfe24be07e60a9/FLAGbc4720a4b [2020-08-21 19:53:37,446 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:53:37,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-08-21 19:53:37,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf8e4339/e197b98d7fe14f6383dfe24be07e60a9/FLAGbc4720a4b [2020-08-21 19:53:37,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf8e4339/e197b98d7fe14f6383dfe24be07e60a9 [2020-08-21 19:53:37,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:53:37,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:53:37,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:53:37,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:53:37,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:53:37,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:53:37" (1/1) ... [2020-08-21 19:53:37,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39062356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:37, skipping insertion in model container [2020-08-21 19:53:37,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:53:37" (1/1) ... [2020-08-21 19:53:37,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:53:37,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:53:38,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:53:38,049 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:53:38,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:53:38,077 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:53:38,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38 WrapperNode [2020-08-21 19:53:38,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:53:38,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:53:38,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:53:38,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:53:38,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... [2020-08-21 19:53:38,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:53:38,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:53:38,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:53:38,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:53:38,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 19:53:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:53:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:53:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:53:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:53:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:53:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:53:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:53:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:53:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:53:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:53:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:53:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:53:38,441 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:53:38,442 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 19:53:38,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:53:38 BoogieIcfgContainer [2020-08-21 19:53:38,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:53:38,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:53:38,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:53:38,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:53:38,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:53:37" (1/3) ... [2020-08-21 19:53:38,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114dd204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:53:38, skipping insertion in model container [2020-08-21 19:53:38,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:53:38" (2/3) ... [2020-08-21 19:53:38,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114dd204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:53:38, skipping insertion in model container [2020-08-21 19:53:38,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:53:38" (3/3) ... [2020-08-21 19:53:38,452 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-08-21 19:53:38,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:53:38,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:53:38,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:53:38,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:53:38,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:53:38,505 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:53:38,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:53:38,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:53:38,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:53:38,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:53:38,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:53:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-21 19:53:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:53:38,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:38,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:38,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:38,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1434042835, now seen corresponding path program 1 times [2020-08-21 19:53:38,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:38,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710692411] [2020-08-21 19:53:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:53:38,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710692411] [2020-08-21 19:53:38,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:53:38,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:53:38,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692681739] [2020-08-21 19:53:38,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:53:38,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:38,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:53:38,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:53:38,854 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-08-21 19:53:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:39,083 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-08-21 19:53:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:53:39,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-21 19:53:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:39,095 INFO L225 Difference]: With dead ends: 32 [2020-08-21 19:53:39,095 INFO L226 Difference]: Without dead ends: 14 [2020-08-21 19:53:39,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:53:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-21 19:53:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-21 19:53:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-21 19:53:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-21 19:53:39,138 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-08-21 19:53:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:39,139 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-21 19:53:39,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:53:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-21 19:53:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 19:53:39,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:39,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:39,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:53:39,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:39,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1507594220, now seen corresponding path program 1 times [2020-08-21 19:53:39,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:39,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545961362] [2020-08-21 19:53:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:53:39,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545961362] [2020-08-21 19:53:39,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:53:39,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 19:53:39,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356047717] [2020-08-21 19:53:39,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:53:39,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:39,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:53:39,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:53:39,313 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-08-21 19:53:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:39,500 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-21 19:53:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:53:39,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-21 19:53:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:39,502 INFO L225 Difference]: With dead ends: 19 [2020-08-21 19:53:39,502 INFO L226 Difference]: Without dead ends: 15 [2020-08-21 19:53:39,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:53:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-21 19:53:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-21 19:53:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-21 19:53:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-08-21 19:53:39,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-08-21 19:53:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:39,509 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-08-21 19:53:39,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:53:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-08-21 19:53:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 19:53:39,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:53:39,510 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:53:39,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:53:39,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:53:39,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:53:39,511 INFO L82 PathProgramCache]: Analyzing trace with hash 507280141, now seen corresponding path program 2 times [2020-08-21 19:53:39,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:53:39,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139734463] [2020-08-21 19:53:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:53:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:53:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:53:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:53:39,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139734463] [2020-08-21 19:53:39,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:53:39,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 19:53:39,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290948156] [2020-08-21 19:53:39,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:53:39,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:53:39,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:53:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:53:39,675 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-08-21 19:53:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:53:39,784 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-08-21 19:53:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:53:39,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-08-21 19:53:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:53:39,785 INFO L225 Difference]: With dead ends: 15 [2020-08-21 19:53:39,785 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:53:39,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:53:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:53:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:53:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:53:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:53:39,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-08-21 19:53:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:53:39,787 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:53:39,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:53:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:53:39,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:53:39,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:53:39,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:53:39,843 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:53:39,843 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-08-21 19:53:39,844 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:53:39,844 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:53:39,844 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 19:53:39,844 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 19:53:39,844 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:53:39,844 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:53:39,845 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 19:53:39,845 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:53:39,845 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:53:39,845 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2020-08-21 19:53:39,845 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-08-21 19:53:39,845 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 68) no Hoare annotation was computed. [2020-08-21 19:53:39,846 INFO L268 CegarLoopResult]: For program point L23(lines 23 66) no Hoare annotation was computed. [2020-08-21 19:53:39,846 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-08-21 19:53:39,846 INFO L268 CegarLoopResult]: For program point L17(lines 17 67) no Hoare annotation was computed. [2020-08-21 19:53:39,846 INFO L268 CegarLoopResult]: For program point L49(lines 49 58) no Hoare annotation was computed. [2020-08-21 19:53:39,846 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 68) no Hoare annotation was computed. [2020-08-21 19:53:39,846 INFO L268 CegarLoopResult]: For program point L42(lines 42 64) no Hoare annotation was computed. [2020-08-21 19:53:39,847 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-21 19:53:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:53:39 BoogieIcfgContainer [2020-08-21 19:53:39,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:53:39,868 INFO L168 Benchmark]: Toolchain (without parser) took 2050.57 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 104.1 MB in the beginning and 161.0 MB in the end (delta: -57.0 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:39,868 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:53:39,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.28 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:39,871 INFO L168 Benchmark]: Boogie Preprocessor took 107.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.1 MB in the beginning and 183.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:39,871 INFO L168 Benchmark]: RCFGBuilder took 258.53 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 170.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:39,872 INFO L168 Benchmark]: TraceAbstraction took 1419.01 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 170.0 MB in the beginning and 161.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:53:39,876 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.28 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.1 MB in the beginning and 183.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.53 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 170.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1419.01 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 170.0 MB in the beginning and 161.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (\old(__return_72) == __return_72 && main__j + main__x <= main__i + main__y) && main__i + main__y <= main__j + main__x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 47 SDslu, 82 SDs, 0 SdLazy, 106 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 30 HoareAnnotationTreeSize, 5 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2463 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...