/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:31:22,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:31:22,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:31:23,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:31:23,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:31:23,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:31:23,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:31:23,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:31:23,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:31:23,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:31:23,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:31:23,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:31:23,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:31:23,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:31:23,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:31:23,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:31:23,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:31:23,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:31:23,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:31:23,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:31:23,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:31:23,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:31:23,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:31:23,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:31:23,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:31:23,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:31:23,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:31:23,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:31:23,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:31:23,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:31:23,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:31:23,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:31:23,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:31:23,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:31:23,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:31:23,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:31:23,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:31:23,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:31:23,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:31:23,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:31:23,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:31:23,077 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 [2020-09-21 11:31:23,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:31:23,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:31:23,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:31:23,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:31:23,105 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:31:23,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:31:23,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:31:23,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:31:23,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:31:23,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:31:23,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:31:23,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:31:23,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:31:23,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:31:23,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:31:23,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:31:23,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:31:23,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:31:23,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:31:23,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:31:23,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:31:23,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:31:23,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:31:23,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:31:23,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:31:23,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:31:23,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:31:23,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:31:23,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:31:23,110 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:31:23,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:31:23,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:31:23,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:31:23,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:31:23,604 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:31:23,605 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-09-21 11:31:23,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fee15e35f/0dc5ad159a9b4e5ba389cb1715a7194c/FLAGf3d3c70ef [2020-09-21 11:31:24,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:31:24,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-09-21 11:31:24,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fee15e35f/0dc5ad159a9b4e5ba389cb1715a7194c/FLAGf3d3c70ef [2020-09-21 11:31:24,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fee15e35f/0dc5ad159a9b4e5ba389cb1715a7194c [2020-09-21 11:31:24,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:31:24,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:31:24,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:24,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:31:24,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:31:24,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:24,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24, skipping insertion in model container [2020-09-21 11:31:24,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:24,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:31:24,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:31:24,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:24,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:31:24,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:24,983 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:31:24,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24 WrapperNode [2020-09-21 11:31:24,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:24,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:31:24,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:31:24,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:31:25,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (1/1) ... [2020-09-21 11:31:25,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:31:25,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:31:25,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:31:25,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:31:25,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (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 [2020-09-21 11:31:25,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:31:25,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:31:25,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:31:25,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:31:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:31:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:31:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:31:25,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:31:25,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:31:25,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:31:25,345 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:31:25,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:25 BoogieIcfgContainer [2020-09-21 11:31:25,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:31:25,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:31:25,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:31:25,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:31:25,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:31:24" (1/3) ... [2020-09-21 11:31:25,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224d32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:25, skipping insertion in model container [2020-09-21 11:31:25,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:24" (2/3) ... [2020-09-21 11:31:25,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224d32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:25, skipping insertion in model container [2020-09-21 11:31:25,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:25" (3/3) ... [2020-09-21 11:31:25,359 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-09-21 11:31:25,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:31:25,377 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:31:25,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:31:25,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:31:25,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:31:25,433 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:31:25,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:31:25,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:31:25,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:31:25,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:31:25,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:31:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-21 11:31:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 11:31:25,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:25,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:25,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2020-09-21 11:31:25,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:25,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955548588] [2020-09-21 11:31:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,638 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,638 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,639 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:31:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:31:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,675 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:25,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955548588] [2020-09-21 11:31:25,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:25,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-21 11:31:25,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126621483] [2020-09-21 11:31:25,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-21 11:31:25,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:25,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-21 11:31:25,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 11:31:25,719 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-09-21 11:31:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:25,753 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-09-21 11:31:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-21 11:31:25,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-21 11:31:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:25,767 INFO L225 Difference]: With dead ends: 26 [2020-09-21 11:31:25,768 INFO L226 Difference]: Without dead ends: 13 [2020-09-21 11:31:25,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 11:31:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-09-21 11:31:25,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-09-21 11:31:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-09-21 11:31:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-09-21 11:31:25,824 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-09-21 11:31:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:25,824 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-09-21 11:31:25,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-21 11:31:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-09-21 11:31:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 11:31:25,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:25,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:25,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:31:25,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-09-21 11:31:25,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:25,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411529517] [2020-09-21 11:31:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,870 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,870 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,870 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:31:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:31:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:31:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:31:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,953 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,953 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,954 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:25,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:25,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:25,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411529517] [2020-09-21 11:31:25,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:25,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:25,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504474684] [2020-09-21 11:31:25,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:25,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:25,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:25,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:25,965 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-09-21 11:31:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:26,003 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-09-21 11:31:26,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:26,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-21 11:31:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:26,004 INFO L225 Difference]: With dead ends: 13 [2020-09-21 11:31:26,005 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:31:26,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:31:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:31:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:31:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:31:26,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-09-21 11:31:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:26,008 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:31:26,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:31:26,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:31:26,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:31:26,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:31:26,070 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:31:26,070 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:26,070 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:26,071 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:31:26,071 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:31:26,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:26,072 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2020-09-21 11:31:26,072 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2020-09-21 11:31:26,072 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 0) [2020-09-21 11:31:26,073 INFO L264 CegarLoopResult]: At program point L15-1(lines 13 16) the Hoare annotation is: (= main_~x~0 0) [2020-09-21 11:31:26,073 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2020-09-21 11:31:26,073 INFO L264 CegarLoopResult]: At program point L13-2(lines 13 16) the Hoare annotation is: false [2020-09-21 11:31:26,073 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 11:31:26,074 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:31:26,074 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:31:26,074 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:31:26,075 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 11:31:26,075 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:31:26,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:31:26 BoogieIcfgContainer [2020-09-21 11:31:26,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:31:26,105 INFO L168 Benchmark]: Toolchain (without parser) took 1515.02 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.2 MB in the beginning and 132.6 MB in the end (delta: -29.4 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:26,106 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:31:26,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.39 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 93.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:26,108 INFO L168 Benchmark]: Boogie Preprocessor took 118.50 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 93.4 MB in the beginning and 181.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:26,109 INFO L168 Benchmark]: RCFGBuilder took 244.15 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 170.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:26,110 INFO L168 Benchmark]: TraceAbstraction took 750.44 ms. Allocated memory is still 201.9 MB. Free memory was 169.5 MB in the beginning and 132.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:26,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.39 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 93.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.50 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 93.4 MB in the beginning and 181.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 244.15 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 170.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 750.44 ms. Allocated memory is still 201.9 MB. Free memory was 169.5 MB in the beginning and 132.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...