./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/recursive/gcd01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6f4e1dd3818e9d3e8c54653af66359ead501b84 ...................................................................................................................................................................................................................................................................................................................................... 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 06:28:31,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:28:31,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:28:31,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:28:31,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:28:31,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:28:31,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:28:31,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:28:31,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:28:31,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:28:31,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:28:31,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:28:31,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:28:31,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:28:31,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:28:31,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:28:31,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:28:31,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:28:31,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:28:31,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:28:31,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:28:31,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:28:31,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:28:31,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:28:31,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:28:31,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:28:31,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:28:31,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:28:31,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:28:31,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:28:31,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:28:31,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:28:31,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:28:31,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:28:31,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:28:31,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:28:31,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:28:31,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:28:31,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:28:31,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:28:31,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:28:31,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-20 06:28:31,853 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:28:31,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:28:31,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:28:31,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:28:31,858 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:28:31,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:28:31,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:28:31,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:28:31,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:28:31,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:28:31,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:28:31,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:28:31,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:28:31,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:28:31,861 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:28:31,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:28:31,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:28:31,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:28:31,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:28:31,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:28:31,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:28:31,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:28:31,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:28:31,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:28:31,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:28:31,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:28:31,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:28:31,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:28:31,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:28:31,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:28:31,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:28:31,865 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 ! overflow) ) 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 -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2020-10-20 06:28:32,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:28:32,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:28:32,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:28:32,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:28:32,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:28:32,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd01-1.c [2020-10-20 06:28:32,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7738b731f/dbce926325f041af83ca7212f91b1936/FLAGd309d20f5 [2020-10-20 06:28:32,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:28:32,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd01-1.c [2020-10-20 06:28:32,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7738b731f/dbce926325f041af83ca7212f91b1936/FLAGd309d20f5 [2020-10-20 06:28:33,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7738b731f/dbce926325f041af83ca7212f91b1936 [2020-10-20 06:28:33,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:28:33,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:28:33,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:28:33,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:28:33,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:28:33,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2fdb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33, skipping insertion in model container [2020-10-20 06:28:33,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:28:33,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:28:33,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:28:33,298 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:28:33,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:28:33,339 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:28:33,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33 WrapperNode [2020-10-20 06:28:33,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:28:33,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:28:33,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:28:33,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:28:33,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:28:33,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:28:33,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:28:33,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:28:33,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (1/1) ... [2020-10-20 06:28:33,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:28:33,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:28:33,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:28:33,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:28:33,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (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 06:28:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-10-20 06:28:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-10-20 06:28:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:28:33,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:28:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:28:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:28:33,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:28:33,733 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:28:33,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:33 BoogieIcfgContainer [2020-10-20 06:28:33,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:28:33,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:28:33,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:28:33,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:28:33,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:28:33" (1/3) ... [2020-10-20 06:28:33,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:33, skipping insertion in model container [2020-10-20 06:28:33,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:33" (2/3) ... [2020-10-20 06:28:33,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:33, skipping insertion in model container [2020-10-20 06:28:33,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:33" (3/3) ... [2020-10-20 06:28:33,744 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-10-20 06:28:33,756 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:28:33,763 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:28:33,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:28:33,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:28:33,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:28:33,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:28:33,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:28:33,815 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:28:33,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:28:33,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:28:33,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:28:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-20 06:28:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:28:33,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:33,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:33,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:33,861 INFO L82 PathProgramCache]: Analyzing trace with hash 995104148, now seen corresponding path program 1 times [2020-10-20 06:28:33,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:33,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851844522] [2020-10-20 06:28:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:34,085 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 06:28:34,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851844522] [2020-10-20 06:28:34,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:34,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:28:34,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451341029] [2020-10-20 06:28:34,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:28:34,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:34,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:28:34,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:28:34,109 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-10-20 06:28:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:34,273 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-10-20 06:28:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:34,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:28:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:34,284 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:28:34,284 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 06:28:34,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:28:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 06:28:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 06:28:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:28:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-20 06:28:34,318 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2020-10-20 06:28:34,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:34,319 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-20 06:28:34,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:28:34,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-20 06:28:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:28:34,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:34,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:34,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:28:34,321 INFO L429 AbstractCegarLoop]: === Iteration 2 === [gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:34,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:34,321 INFO L82 PathProgramCache]: Analyzing trace with hash 995103924, now seen corresponding path program 1 times [2020-10-20 06:28:34,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:34,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607676298] [2020-10-20 06:28:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:34,418 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 06:28:34,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607676298] [2020-10-20 06:28:34,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:34,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:28:34,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445155830] [2020-10-20 06:28:34,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:28:34,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:34,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:28:34,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:28:34,423 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2020-10-20 06:28:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:34,480 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-10-20 06:28:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:34,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:28:34,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:34,481 INFO L225 Difference]: With dead ends: 17 [2020-10-20 06:28:34,481 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:28:34,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:28:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:28:34,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:28:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:28:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:28:34,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-20 06:28:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:34,484 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:28:34,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:28:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:28:34,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:28:34,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:28:34,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:28:34,610 INFO L274 CegarLoopResult]: For program point gcdFINAL(lines 17 28) no Hoare annotation was computed. [2020-10-20 06:28:34,610 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-10-20 06:28:34,610 INFO L274 CegarLoopResult]: For program point gcdEXIT(lines 17 28) no Hoare annotation was computed. [2020-10-20 06:28:34,610 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-10-20 06:28:34,610 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-20 06:28:34,611 INFO L274 CegarLoopResult]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-10-20 06:28:34,611 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y1 2147483647) (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= gcd_~y2 2147483647))) [2020-10-20 06:28:34,612 INFO L274 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-10-20 06:28:34,612 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-20 06:28:34,612 INFO L274 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-10-20 06:28:34,612 INFO L277 CegarLoopResult]: At program point gcdENTRY(lines 17 28) the Hoare annotation is: true [2020-10-20 06:28:34,612 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y1 2147483647) (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= gcd_~y2 2147483647))) [2020-10-20 06:28:34,612 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-10-20 06:28:34,613 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-10-20 06:28:34,613 INFO L274 CegarLoopResult]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-10-20 06:28:34,613 INFO L274 CegarLoopResult]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-10-20 06:28:34,613 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 06:28:34,613 INFO L274 CegarLoopResult]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-10-20 06:28:34,613 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:28:34,614 INFO L274 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-10-20 06:28:34,614 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-20 06:28:34,614 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 06:28:34,615 INFO L274 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-10-20 06:28:34,615 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:28:34,615 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:28:34,615 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:28:34,616 INFO L277 CegarLoopResult]: At program point L43(lines 30 45) the Hoare annotation is: true [2020-10-20 06:28:34,616 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-10-20 06:28:34,616 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-10-20 06:28:34,616 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-10-20 06:28:34,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:28:34 BoogieIcfgContainer [2020-10-20 06:28:34,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:28:34,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:28:34,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:28:34,629 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:28:34,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:33" (3/4) ... [2020-10-20 06:28:34,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:28:34,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-10-20 06:28:34,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 06:28:34,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:28:34,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:34,648 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:34,705 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:28:34,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:28:34,711 INFO L168 Benchmark]: Toolchain (without parser) took 1631.90 ms. Allocated memory was 41.9 MB in the beginning and 47.2 MB in the end (delta: 5.2 MB). Free memory was 22.5 MB in the beginning and 15.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,712 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 11.1 MB in the beginning and 11.0 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.08 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 23.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 42.5 MB. Free memory was 23.6 MB in the beginning and 21.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,715 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 ms. Allocated memory is still 42.5 MB. Free memory was 21.9 MB in the beginning and 20.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,717 INFO L168 Benchmark]: RCFGBuilder took 342.92 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 20.8 MB in the beginning and 24.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,718 INFO L168 Benchmark]: TraceAbstraction took 891.25 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 23.7 MB in the beginning and 18.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,720 INFO L168 Benchmark]: Witness Printer took 78.83 ms. Allocated memory is still 47.2 MB. Free memory was 18.5 MB in the beginning and 15.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:34,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 11.1 MB in the beginning and 11.0 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 255.08 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 23.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 42.5 MB. Free memory was 23.6 MB in the beginning and 21.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.11 ms. Allocated memory is still 42.5 MB. Free memory was 21.9 MB in the beginning and 20.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 342.92 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 20.8 MB in the beginning and 24.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 891.25 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 23.7 MB in the beginning and 18.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. * Witness Printer took 78.83 ms. Allocated memory is still 47.2 MB. Free memory was 18.5 MB in the beginning and 15.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 70 SDslu, 52 SDs, 0 SdLazy, 96 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 61 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 12 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, 540 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...