/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:10:53,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:10:53,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:10:53,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:10:53,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:10:53,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:10:53,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:10:53,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:10:53,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:10:53,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:10:53,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:10:53,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:10:53,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:10:53,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:10:53,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:10:53,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:10:53,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:10:53,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:10:53,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:10:53,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:10:53,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:10:53,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:10:53,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:10:53,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:10:53,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:10:53,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:10:53,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:10:53,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:10:53,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:10:53,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:10:53,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:10:53,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:10:53,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:10:53,917 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:10:53,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:10:53,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:10:53,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:10:53,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:10:53,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:10:53,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:10:53,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:10:53,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:10:53,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:10:53,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:10:53,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:10:53,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:10:53,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:10:53,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:10:53,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:10:53,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:10:53,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:10:53,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:10:53,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:10:53,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:10:53,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:10:54,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:10:54,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:10:54,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:10:54,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:10:54,402 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:10:54,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i [2021-01-06 17:10:54,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48ce48623/8fe58b19fe084fb0abd15ec4ead89dd8/FLAG86b547262 [2021-01-06 17:10:55,122 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:10:55,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i [2021-01-06 17:10:55,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48ce48623/8fe58b19fe084fb0abd15ec4ead89dd8/FLAG86b547262 [2021-01-06 17:10:55,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48ce48623/8fe58b19fe084fb0abd15ec4ead89dd8 [2021-01-06 17:10:55,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:10:55,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:10:55,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:10:55,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:10:55,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:10:55,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7953f3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55, skipping insertion in model container [2021-01-06 17:10:55,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:10:55,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:10:55,728 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i[873,886] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:10:55,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:10:55,758 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:10:55,773 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i[873,886] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:10:55,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:10:55,792 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:10:55,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55 WrapperNode [2021-01-06 17:10:55,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:10:55,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:10:55,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:10:55,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:10:55,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:10:55,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:10:55,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:10:55,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:10:55,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... [2021-01-06 17:10:55,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:10:55,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:10:55,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:10:55,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:10:55,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:10:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:10:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:10:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:10:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:10:56,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:10:56,222 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 17:10:56,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:10:56 BoogieIcfgContainer [2021-01-06 17:10:56,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:10:56,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:10:56,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:10:56,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:10:56,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:10:55" (1/3) ... [2021-01-06 17:10:56,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4371fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:10:56, skipping insertion in model container [2021-01-06 17:10:56,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:55" (2/3) ... [2021-01-06 17:10:56,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4371fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:10:56, skipping insertion in model container [2021-01-06 17:10:56,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:10:56" (3/3) ... [2021-01-06 17:10:56,241 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark43_conjunctive.i [2021-01-06 17:10:56,248 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:10:56,258 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 17:10:56,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 17:10:56,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:10:56,331 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:10:56,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:10:56,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:10:56,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:10:56,354 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:10:56,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:10:56,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:10:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-06 17:10:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:10:56,383 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:56,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:56,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:56,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:56,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-01-06 17:10:56,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:56,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413453248] [2021-01-06 17:10:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:10:56,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413453248] [2021-01-06 17:10:56,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:10:56,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:10:56,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49058181] [2021-01-06 17:10:56,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:10:56,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:10:56,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:10:56,597 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-01-06 17:10:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:56,615 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-01-06 17:10:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:10:56,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:10:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:56,627 INFO L225 Difference]: With dead ends: 20 [2021-01-06 17:10:56,627 INFO L226 Difference]: Without dead ends: 8 [2021-01-06 17:10:56,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:10:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-01-06 17:10:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-01-06 17:10:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-01-06 17:10:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-01-06 17:10:56,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-01-06 17:10:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:56,670 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-01-06 17:10:56,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:10:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-01-06 17:10:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:10:56,671 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:56,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:56,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:10:56,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-01-06 17:10:56,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:56,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872304233] [2021-01-06 17:10:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:10:56,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872304233] [2021-01-06 17:10:56,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:10:56,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:10:56,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376742617] [2021-01-06 17:10:56,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:10:56,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:56,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:10:56,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:10:56,803 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2021-01-06 17:10:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:56,836 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-01-06 17:10:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:10:56,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-06 17:10:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:56,837 INFO L225 Difference]: With dead ends: 13 [2021-01-06 17:10:56,837 INFO L226 Difference]: Without dead ends: 9 [2021-01-06 17:10:56,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:10:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-06 17:10:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-06 17:10:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-06 17:10:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-06 17:10:56,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-01-06 17:10:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:56,848 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-06 17:10:56,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:10:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-06 17:10:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:10:56,849 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:56,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:56,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:10:56,850 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:56,854 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-01-06 17:10:56,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:56,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314105629] [2021-01-06 17:10:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:10:56,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314105629] [2021-01-06 17:10:56,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729197757] [2021-01-06 17:10:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:10:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:57,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:10:57,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:10:57,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:10:57,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:10:57,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:10:57,216 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:10:57,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:10:57,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:10:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:10:57,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:10:57,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-01-06 17:10:57,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312149859] [2021-01-06 17:10:57,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:10:57,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:10:57,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:10:57,241 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2021-01-06 17:10:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:57,278 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-01-06 17:10:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:10:57,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2021-01-06 17:10:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:57,279 INFO L225 Difference]: With dead ends: 9 [2021-01-06 17:10:57,279 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:10:57,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:10:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:10:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:10:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:10:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:10:57,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-01-06 17:10:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:57,288 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:10:57,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:10:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:10:57,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:10:57,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:10:57,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:10:57,530 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:10:57,531 INFO L185 CegarLoopUtils]: At program point L23-2(lines 23 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 100) (<= ULTIMATE.start_main_~y~0 100)) [2021-01-06 17:10:57,531 INFO L189 CegarLoopUtils]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2021-01-06 17:10:57,531 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-01-06 17:10:57,531 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:10:57,531 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:10:57,532 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:10:57,532 INFO L192 CegarLoopUtils]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-01-06 17:10:57,532 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-01-06 17:10:57,532 INFO L189 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-01-06 17:10:57,532 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-01-06 17:10:57,532 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-01-06 17:10:57,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:10:57 BoogieIcfgContainer [2021-01-06 17:10:57,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:10:57,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:10:57,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:10:57,550 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:10:57,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:10:56" (3/4) ... [2021-01-06 17:10:57,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:10:57,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 17:10:57,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:10:57,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:10:57,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:10:57,606 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark43_conjunctive.i-witness.graphml [2021-01-06 17:10:57,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:10:57,608 INFO L168 Benchmark]: Toolchain (without parser) took 2107.58 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 85.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,609 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 154.1 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:10:57,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.12 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.06 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,611 INFO L168 Benchmark]: Boogie Preprocessor took 29.09 ms. Allocated memory is still 154.1 MB. Free memory was 118.3 MB in the beginning and 117.3 MB in the end (delta: 997.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,612 INFO L168 Benchmark]: RCFGBuilder took 360.18 ms. Allocated memory is still 154.1 MB. Free memory was 117.3 MB in the beginning and 106.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,613 INFO L168 Benchmark]: TraceAbstraction took 1320.92 ms. Allocated memory is still 154.1 MB. Free memory was 106.0 MB in the beginning and 87.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,614 INFO L168 Benchmark]: Witness Printer took 56.80 ms. Allocated memory is still 154.1 MB. Free memory was 87.0 MB in the beginning and 85.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:57,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 154.1 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.12 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.06 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.09 ms. Allocated memory is still 154.1 MB. Free memory was 118.3 MB in the beginning and 117.3 MB in the end (delta: 997.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 360.18 ms. Allocated memory is still 154.1 MB. Free memory was 117.3 MB in the beginning and 106.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1320.92 ms. Allocated memory is still 154.1 MB. Free memory was 106.0 MB in the beginning and 87.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * Witness Printer took 56.80 ms. Allocated memory is still 154.1 MB. Free memory was 87.0 MB in the beginning and 85.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x <= 100 && y <= 100 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 4 SDslu, 9 SDs, 0 SdLazy, 18 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 598 SizeOfPredicates, 3 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...