./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/trex01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/trex01-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 447515879dde6ddadac2168313caab8f63c0c815 .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:55:57,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:55:57,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:55:57,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:55:57,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:55:57,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:55:57,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:55:57,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:55:57,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:55:57,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:55:57,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:55:57,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:55:57,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:55:57,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:55:57,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:55:57,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:55:57,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:55:57,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:55:57,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:55:57,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:55:57,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:55:57,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:55:57,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:55:57,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:55:57,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:55:57,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:55:57,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:55:57,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:55:57,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:55:57,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:55:57,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:55:57,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:55:57,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:55:57,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:55:57,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:55:57,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:55:57,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:55:57,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:55:57,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:55:57,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:55:57,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:55:57,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:55:57,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:55:57,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:55:57,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:55:57,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:55:57,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:55:57,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:55:57,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:55:57,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:55:57,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:55:57,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:55:57,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:55:57,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:55:57,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:55:57,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:55:57,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:55:57,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:55:57,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:55:57,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:55:57,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:55:57,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:55:57,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:55:57,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:55:57,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:55:57,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:55:57,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:55:57,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:55:57,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:55:57,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:55:57,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:55:57,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 447515879dde6ddadac2168313caab8f63c0c815 [2020-10-20 00:55:57,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:55:57,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:55:57,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:55:57,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:55:57,425 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:55:57,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex01-2.i [2020-10-20 00:55:57,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/648bea0c1/83aab95bd74a4d9eb7378ff42c0899a3/FLAG93eea71f8 [2020-10-20 00:55:57,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:55:57,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex01-2.i [2020-10-20 00:55:57,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/648bea0c1/83aab95bd74a4d9eb7378ff42c0899a3/FLAG93eea71f8 [2020-10-20 00:55:58,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/648bea0c1/83aab95bd74a4d9eb7378ff42c0899a3 [2020-10-20 00:55:58,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:55:58,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:55:58,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:58,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:55:58,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:55:58,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a5af14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58, skipping insertion in model container [2020-10-20 00:55:58,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:55:58,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:55:58,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:58,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:55:58,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:58,579 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:55:58,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58 WrapperNode [2020-10-20 00:55:58,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:58,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:58,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:55:58,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:55:58,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:58,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:55:58,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:55:58,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:55:58,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... [2020-10-20 00:55:58,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:55:58,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:55:58,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:55:58,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:55:58,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:55:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:55:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:55:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:55:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:55:59,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:55:59,270 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:55:59,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:59 BoogieIcfgContainer [2020-10-20 00:55:59,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:55:59,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:55:59,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:55:59,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:55:59,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:55:58" (1/3) ... [2020-10-20 00:55:59,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586b12b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:59, skipping insertion in model container [2020-10-20 00:55:59,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:58" (2/3) ... [2020-10-20 00:55:59,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586b12b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:59, skipping insertion in model container [2020-10-20 00:55:59,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:59" (3/3) ... [2020-10-20 00:55:59,281 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2020-10-20 00:55:59,294 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:55:59,302 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:55:59,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:55:59,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:55:59,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:55:59,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:55:59,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:55:59,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:55:59,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:55:59,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:55:59,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:55:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-20 00:55:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:55:59,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:59,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:59,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:59,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:59,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1538483378, now seen corresponding path program 1 times [2020-10-20 00:55:59,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:59,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297910513] [2020-10-20 00:55:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:59,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297910513] [2020-10-20 00:55:59,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:59,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:55:59,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200346035] [2020-10-20 00:55:59,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:55:59,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:55:59,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:55:59,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:55:59,580 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-10-20 00:55:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:59,603 INFO L93 Difference]: Finished difference Result 65 states and 102 transitions. [2020-10-20 00:55:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:55:59,605 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:55:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:59,615 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:55:59,615 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 00:55:59,619 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 [2020-10-20 00:55:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 00:55:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 00:55:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 00:55:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-20 00:55:59,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2020-10-20 00:55:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:59,658 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-20 00:55:59,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:55:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-20 00:55:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:55:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:59,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:59,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:55:59,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1652999982, now seen corresponding path program 1 times [2020-10-20 00:55:59,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:59,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912806251] [2020-10-20 00:55:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:59,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912806251] [2020-10-20 00:55:59,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:59,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:55:59,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259500305] [2020-10-20 00:55:59,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:55:59,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:55:59,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:55:59,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:55:59,788 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2020-10-20 00:55:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:59,828 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-20 00:55:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:55:59,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 00:55:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:59,829 INFO L225 Difference]: With dead ends: 19 [2020-10-20 00:55:59,829 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:55:59,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:55:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:55:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:55:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:55:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:55:59,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-20 00:55:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:59,831 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:55:59,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:55:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:55:59,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:55:59,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:55:59,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:55:59,880 INFO L274 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed. [2020-10-20 00:55:59,880 INFO L274 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-10-20 00:55:59,880 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 29) no Hoare annotation was computed. [2020-10-20 00:55:59,880 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,881 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,882 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,882 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,882 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,882 INFO L274 CegarLoopResult]: For program point L38(lines 38 45) no Hoare annotation was computed. [2020-10-20 00:55:59,882 INFO L277 CegarLoopResult]: At program point L38-2(lines 36 46) the Hoare annotation is: true [2020-10-20 00:55:59,882 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 45) no Hoare annotation was computed. [2020-10-20 00:55:59,883 INFO L277 CegarLoopResult]: At program point L38-5(lines 36 46) the Hoare annotation is: true [2020-10-20 00:55:59,883 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2020-10-20 00:55:59,883 INFO L274 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-10-20 00:55:59,883 INFO L270 CegarLoopResult]: At program point L30-6(line 30) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2020-10-20 00:55:59,883 INFO L274 CegarLoopResult]: For program point L30-7(line 30) no Hoare annotation was computed. [2020-10-20 00:55:59,883 INFO L277 CegarLoopResult]: At program point L55(lines 48 56) the Hoare annotation is: true [2020-10-20 00:55:59,884 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-10-20 00:55:59,884 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 40) no Hoare annotation was computed. [2020-10-20 00:55:59,884 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:55:59,884 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 00:55:59,884 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:55:59,884 INFO L277 CegarLoopResult]: At program point L25-1(lines 25 47) the Hoare annotation is: true [2020-10-20 00:55:59,885 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-10-20 00:55:59,885 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-10-20 00:55:59,885 INFO L274 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-10-20 00:55:59,885 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 00:55:59,885 INFO L277 CegarLoopResult]: At program point L18-2(line 33) the Hoare annotation is: true [2020-10-20 00:55:59,885 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-10-20 00:55:59,886 INFO L277 CegarLoopResult]: At program point L18-5(line 33) the Hoare annotation is: true [2020-10-20 00:55:59,886 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-20 00:55:59,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:55:59 BoogieIcfgContainer [2020-10-20 00:55:59,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:55:59,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:55:59,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:55:59,906 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:55:59,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:59" (3/4) ... [2020-10-20 00:55:59,910 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:55:59,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-20 00:55:59,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:55:59,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:55:59,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:56:00,030 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:56:00,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:56:00,033 INFO L168 Benchmark]: Toolchain (without parser) took 1811.73 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 12.7 MB in the beginning and 9.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,033 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 33.6 MB. Free memory was 18.5 MB in the beginning and 18.5 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.14 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.7 MB in the beginning and 25.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.60 ms. Allocated memory is still 43.0 MB. Free memory was 25.9 MB in the beginning and 24.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,035 INFO L168 Benchmark]: Boogie Preprocessor took 55.11 ms. Allocated memory is still 43.0 MB. Free memory was 24.0 MB in the beginning and 22.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,035 INFO L168 Benchmark]: RCFGBuilder took 578.42 ms. Allocated memory is still 43.0 MB. Free memory was 22.5 MB in the beginning and 14.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,036 INFO L168 Benchmark]: TraceAbstraction took 631.57 ms. Allocated memory was 43.0 MB in the beginning and 46.1 MB in the end (delta: 3.1 MB). Free memory was 14.4 MB in the beginning and 14.0 MB in the end (delta: 471.2 kB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,037 INFO L168 Benchmark]: Witness Printer took 125.45 ms. Allocated memory is still 46.1 MB. Free memory was 14.0 MB in the beginning and 9.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:00,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 33.6 MB. Free memory was 18.5 MB in the beginning and 18.5 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 354.14 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.7 MB in the beginning and 25.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 57.60 ms. Allocated memory is still 43.0 MB. Free memory was 25.9 MB in the beginning and 24.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 55.11 ms. Allocated memory is still 43.0 MB. Free memory was 24.0 MB in the beginning and 22.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 578.42 ms. Allocated memory is still 43.0 MB. Free memory was 22.5 MB in the beginning and 14.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 631.57 ms. Allocated memory was 43.0 MB in the beginning and 46.1 MB in the end (delta: 3.1 MB). Free memory was 14.4 MB in the beginning and 14.0 MB in the end (delta: 471.2 kB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Witness Printer took 125.45 ms. Allocated memory is still 46.1 MB. Free memory was 14.0 MB in the beginning and 9.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 4 SDslu, 8 SDs, 0 SdLazy, 10 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 8 PreInvPairs, 14 NumberOfFragments, 12 HoareAnnotationTreeSize, 8 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, 243 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...