./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.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 8d39666f7b9e3c393826226f879477647e7209cc ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:14:26,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:14:26,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:14:26,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:14:26,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:14:26,105 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:14:26,106 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:14:26,108 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:14:26,114 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:14:26,117 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:14:26,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:14:26,118 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:14:26,120 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:14:26,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:14:26,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:14:26,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:14:26,129 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:14:26,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:14:26,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:14:26,141 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:14:26,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:14:26,148 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:14:26,152 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:14:26,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:14:26,154 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:14:26,156 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:14:26,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:14:26,159 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:14:26,160 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:14:26,161 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:14:26,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:14:26,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:14:26,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:14:26,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:14:26,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:14:26,166 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:14:26,166 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-01-01 21:14:26,192 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:14:26,192 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:14:26,193 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:14:26,193 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:14:26,194 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:14:26,194 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:14:26,195 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 21:14:26,195 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:14:26,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:14:26,195 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 21:14:26,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:14:26,195 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-01 21:14:26,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 21:14:26,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-01 21:14:26,196 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-01 21:14:26,196 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 21:14:26,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:14:26,196 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:14:26,198 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-01 21:14:26,198 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:14:26,198 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:14:26,198 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 21:14:26,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 21:14:26,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 21:14:26,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:14:26,199 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 21:14:26,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-01 21:14:26,200 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:14:26,200 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 21:14:26,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-01 21:14:26,201 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8d39666f7b9e3c393826226f879477647e7209cc [2019-01-01 21:14:26,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:14:26,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:14:26,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:14:26,272 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:14:26,273 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:14:26,273 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2019-01-01 21:14:26,333 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ef7e6fd/87fc19ede56746e6a44cf013168222d4/FLAG2ee6394c7 [2019-01-01 21:14:26,840 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:14:26,841 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2019-01-01 21:14:26,847 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ef7e6fd/87fc19ede56746e6a44cf013168222d4/FLAG2ee6394c7 [2019-01-01 21:14:27,208 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ef7e6fd/87fc19ede56746e6a44cf013168222d4 [2019-01-01 21:14:27,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:14:27,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:14:27,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:14:27,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:14:27,217 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:14:27,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ba847d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27, skipping insertion in model container [2019-01-01 21:14:27,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:14:27,247 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:14:27,423 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:14:27,428 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:14:27,446 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:14:27,467 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:14:27,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27 WrapperNode [2019-01-01 21:14:27,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:14:27,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:14:27,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:14:27,468 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:14:27,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:14:27,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:14:27,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:14:27,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:14:27,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (1/1) ... [2019-01-01 21:14:27,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:14:27,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:14:27,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:14:27,547 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:14:27,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (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 [2019-01-01 21:14:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:14:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:14:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-01-01 21:14:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-01-01 21:14:28,023 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:14:28,023 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-01 21:14:28,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:14:28 BoogieIcfgContainer [2019-01-01 21:14:28,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:14:28,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 21:14:28,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 21:14:28,030 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 21:14:28,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 09:14:27" (1/3) ... [2019-01-01 21:14:28,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cd9cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 09:14:28, skipping insertion in model container [2019-01-01 21:14:28,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:14:27" (2/3) ... [2019-01-01 21:14:28,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cd9cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 09:14:28, skipping insertion in model container [2019-01-01 21:14:28,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:14:28" (3/3) ... [2019-01-01 21:14:28,037 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2019-01-01 21:14:28,052 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 21:14:28,063 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-01 21:14:28,089 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-01 21:14:28,131 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:14:28,132 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 21:14:28,133 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-01 21:14:28,133 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 21:14:28,134 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:14:28,134 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:14:28,134 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 21:14:28,134 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:14:28,135 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 21:14:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-01-01 21:14:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-01 21:14:28,171 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:14:28,172 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 21:14:28,176 INFO L423 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:14:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:14:28,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1550668038, now seen corresponding path program 1 times [2019-01-01 21:14:28,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:14:28,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:14:28,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:28,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:14:28,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:14:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-01-01 21:14:28,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:14:28,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 21:14:28,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-01 21:14:28,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 21:14:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:14:28,443 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-01-01 21:14:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:14:28,538 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-01-01 21:14:28,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-01 21:14:28,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-01 21:14:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 21:14:28,551 INFO L225 Difference]: With dead ends: 29 [2019-01-01 21:14:28,551 INFO L226 Difference]: Without dead ends: 18 [2019-01-01 21:14:28,555 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:14:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-01-01 21:14:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-01-01 21:14:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-01 21:14:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-01-01 21:14:28,603 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-01-01 21:14:28,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 21:14:28,604 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-01-01 21:14:28,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-01 21:14:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-01-01 21:14:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-01-01 21:14:28,606 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:14:28,606 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 21:14:28,607 INFO L423 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:14:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:14:28,607 INFO L82 PathProgramCache]: Analyzing trace with hash -554411409, now seen corresponding path program 1 times [2019-01-01 21:14:28,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:14:28,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:14:28,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:28,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:14:28,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:14:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-01-01 21:14:28,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:14:28,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-01 21:14:28,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 21:14:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 21:14:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 21:14:28,756 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-01-01 21:14:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:14:28,862 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-01-01 21:14:28,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 21:14:28,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-01-01 21:14:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 21:14:28,866 INFO L225 Difference]: With dead ends: 29 [2019-01-01 21:14:28,866 INFO L226 Difference]: Without dead ends: 21 [2019-01-01 21:14:28,868 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 21:14:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-01 21:14:28,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-01-01 21:14:28,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-01 21:14:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-01-01 21:14:28,875 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 23 [2019-01-01 21:14:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 21:14:28,876 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-01-01 21:14:28,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 21:14:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-01-01 21:14:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-01 21:14:28,877 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:14:28,877 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 21:14:28,877 INFO L423 AbstractCegarLoop]: === Iteration 3 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:14:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:14:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash 877327312, now seen corresponding path program 1 times [2019-01-01 21:14:28,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:14:28,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:14:28,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:28,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:14:28,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:14:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-01 21:14:29,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 21:14:29,065 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-01 21:14:29,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:14:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:14:29,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:14:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-01 21:14:29,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 21:14:29,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-01-01 21:14:29,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-01 21:14:29,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-01 21:14:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-01-01 21:14:29,429 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2019-01-01 21:14:29,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:14:29,551 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-01-01 21:14:29,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-01 21:14:29,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-01-01 21:14:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 21:14:29,553 INFO L225 Difference]: With dead ends: 25 [2019-01-01 21:14:29,553 INFO L226 Difference]: Without dead ends: 24 [2019-01-01 21:14:29,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-01-01 21:14:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-01-01 21:14:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-01-01 21:14:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-01 21:14:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-01-01 21:14:29,560 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2019-01-01 21:14:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 21:14:29,560 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-01-01 21:14:29,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-01 21:14:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-01-01 21:14:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-01-01 21:14:29,562 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:14:29,562 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-01-01 21:14:29,562 INFO L423 AbstractCegarLoop]: === Iteration 4 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:14:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:14:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash 21744710, now seen corresponding path program 1 times [2019-01-01 21:14:29,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:14:29,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:14:29,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:29,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:14:29,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:14:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-01-01 21:14:29,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:14:29,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-01 21:14:29,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-01 21:14:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 21:14:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 21:14:29,635 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-01-01 21:14:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:14:29,683 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-01-01 21:14:29,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 21:14:29,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-01-01 21:14:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 21:14:29,685 INFO L225 Difference]: With dead ends: 23 [2019-01-01 21:14:29,685 INFO L226 Difference]: Without dead ends: 22 [2019-01-01 21:14:29,686 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 21:14:29,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-01 21:14:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-01-01 21:14:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-01 21:14:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-01-01 21:14:29,691 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 24 [2019-01-01 21:14:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 21:14:29,691 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-01-01 21:14:29,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-01 21:14:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-01-01 21:14:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-01-01 21:14:29,693 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:14:29,693 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-01-01 21:14:29,694 INFO L423 AbstractCegarLoop]: === Iteration 5 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:14:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:14:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1394216999, now seen corresponding path program 1 times [2019-01-01 21:14:29,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:14:29,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:14:29,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:29,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:14:29,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:14:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:14:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-01-01 21:14:29,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:14:29,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 21:14:29,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-01 21:14:29,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 21:14:29,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:14:29,813 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2019-01-01 21:14:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:14:29,851 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-01-01 21:14:29,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-01 21:14:29,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-01-01 21:14:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 21:14:29,852 INFO L225 Difference]: With dead ends: 22 [2019-01-01 21:14:29,852 INFO L226 Difference]: Without dead ends: 0 [2019-01-01 21:14:29,853 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:14:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-01 21:14:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-01 21:14:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-01 21:14:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-01 21:14:29,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-01-01 21:14:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 21:14:29,855 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:14:29,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-01 21:14:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-01 21:14:29,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-01 21:14:29,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-01 21:14:29,872 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-01 21:14:29,872 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-01 21:14:29,872 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-01 21:14:29,872 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-01-01 21:14:29,872 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-01-01 21:14:29,873 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2019-01-01 21:14:29,873 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-01-01 21:14:29,873 INFO L448 ceAbstractionStarter]: For program point L11(lines 11 17) no Hoare annotation was computed. [2019-01-01 21:14:29,873 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2019-01-01 21:14:29,873 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2019-01-01 21:14:29,873 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2019-01-01 21:14:29,874 INFO L448 ceAbstractionStarter]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2019-01-01 21:14:29,874 INFO L448 ceAbstractionStarter]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2019-01-01 21:14:29,874 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-01-01 21:14:29,874 INFO L451 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2019-01-01 21:14:29,874 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-01 21:14:29,874 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-01-01 21:14:29,874 INFO L448 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-01-01 21:14:29,875 INFO L448 ceAbstractionStarter]: For program point L6-3(line 6) no Hoare annotation was computed. [2019-01-01 21:14:29,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 09:14:29 BoogieIcfgContainer [2019-01-01 21:14:29,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 21:14:29,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:14:29,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:14:29,879 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:14:29,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:14:28" (3/4) ... [2019-01-01 21:14:29,883 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-01 21:14:29,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-01-01 21:14:29,896 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-01 21:14:29,896 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-01 21:14:29,946 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:14:29,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:14:29,948 INFO L168 Benchmark]: Toolchain (without parser) took 2735.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -83.8 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. [2019-01-01 21:14:29,950 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:14:29,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:14:29,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.39 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:14:29,952 INFO L168 Benchmark]: Boogie Preprocessor took 28.81 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:14:29,952 INFO L168 Benchmark]: RCFGBuilder took 477.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-01 21:14:29,953 INFO L168 Benchmark]: TraceAbstraction took 1852.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 11.5 GB. [2019-01-01 21:14:29,954 INFO L168 Benchmark]: Witness Printer took 67.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-01-01 21:14:29,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.39 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.81 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 477.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1852.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 2 error locations. SAFE Result, 1.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 10 SDslu, 126 SDs, 0 SdLazy, 77 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 4131 SizeOfPredicates, 1 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 84/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...