./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/Toulouse-BranchesToLoop_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 91b1670e 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/termination-crafted/Toulouse-BranchesToLoop_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 46206f7a86b26e5772618ef155399955c07418b5 ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:05:59,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:05:59,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:05:59,859 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:05:59,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:05:59,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:05:59,862 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:05:59,864 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:05:59,866 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:05:59,867 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:05:59,868 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:05:59,868 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:05:59,869 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:05:59,870 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:05:59,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:05:59,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:05:59,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:05:59,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:05:59,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:05:59,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:05:59,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:05:59,886 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:05:59,888 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:05:59,888 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:05:59,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:05:59,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:05:59,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:05:59,896 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:05:59,898 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:05:59,899 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:05:59,900 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:05:59,902 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:05:59,903 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:05:59,904 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:05:59,905 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:05:59,905 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:05:59,907 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:05:59,930 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:05:59,930 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:05:59,931 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:05:59,931 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:05:59,932 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:05:59,932 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:05:59,932 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:05:59,933 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:05:59,933 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:05:59,933 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:05:59,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:05:59,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:05:59,937 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:05:59,937 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:05:59,937 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:05:59,937 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:05:59,937 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:05:59,938 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:05:59,938 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:05:59,938 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:05:59,938 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:05:59,938 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:05:59,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:05:59,939 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:05:59,939 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:05:59,939 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:05:59,939 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:05:59,939 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:05:59,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:05:59,941 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46206f7a86b26e5772618ef155399955c07418b5 [2018-11-28 23:05:59,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:06:00,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:06:00,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:06:00,007 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:06:00,008 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:06:00,009 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Toulouse-BranchesToLoop_false-no-overflow.c [2018-11-28 23:06:00,071 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079dc2730/b703055a9650401c85caba09e15462cd/FLAG05d641235 [2018-11-28 23:06:00,551 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:06:00,552 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Toulouse-BranchesToLoop_false-no-overflow.c [2018-11-28 23:06:00,560 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079dc2730/b703055a9650401c85caba09e15462cd/FLAG05d641235 [2018-11-28 23:06:00,875 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079dc2730/b703055a9650401c85caba09e15462cd [2018-11-28 23:06:00,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:06:00,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:06:00,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:06:00,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:06:00,888 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:06:00,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:00" (1/1) ... [2018-11-28 23:06:00,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219e09b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:00, skipping insertion in model container [2018-11-28 23:06:00,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:00" (1/1) ... [2018-11-28 23:06:00,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:06:00,919 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:06:01,148 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:06:01,154 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:06:01,169 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:06:01,183 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:06:01,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01 WrapperNode [2018-11-28 23:06:01,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:06:01,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:06:01,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:06:01,184 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:06:01,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:06:01,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:06:01,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:06:01,207 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:06:01,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (1/1) ... [2018-11-28 23:06:01,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:06:01,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:06:01,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:06:01,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:06:01,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (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 [2018-11-28 23:06:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:06:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:06:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:06:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:06:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:06:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:06:01,629 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:06:01,630 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 23:06:01,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:01 BoogieIcfgContainer [2018-11-28 23:06:01,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:06:01,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:06:01,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:06:01,637 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:06:01,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:06:00" (1/3) ... [2018-11-28 23:06:01,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222b1084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:06:01, skipping insertion in model container [2018-11-28 23:06:01,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:01" (2/3) ... [2018-11-28 23:06:01,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222b1084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:06:01, skipping insertion in model container [2018-11-28 23:06:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:01" (3/3) ... [2018-11-28 23:06:01,641 INFO L112 eAbstractionObserver]: Analyzing ICFG Toulouse-BranchesToLoop_false-no-overflow.c [2018-11-28 23:06:01,655 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:06:01,666 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 23:06:01,688 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 23:06:01,724 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:06:01,725 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:06:01,725 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:06:01,725 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:06:01,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:06:01,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:06:01,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:06:01,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:06:01,726 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:06:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-28 23:06:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 23:06:01,753 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:01,754 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:01,757 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:01,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash -895810426, now seen corresponding path program 1 times [2018-11-28 23:06:01,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:01,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:01,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:01,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:01,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:01,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:01,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:06:01,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:06:01,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:06:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:06:01,980 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2018-11-28 23:06:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:02,115 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-28 23:06:02,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:06:02,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-28 23:06:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:02,128 INFO L225 Difference]: With dead ends: 25 [2018-11-28 23:06:02,128 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 23:06:02,132 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 23:06:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 23:06:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:06:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-28 23:06:02,166 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2018-11-28 23:06:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:02,166 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-28 23:06:02,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:06:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-28 23:06:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:06:02,167 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:02,168 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:02,168 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:02,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2000319378, now seen corresponding path program 1 times [2018-11-28 23:06:02,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:02,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:02,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:02,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:02,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:02,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:06:02,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:06:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:06:02,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:06:02,246 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2018-11-28 23:06:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:02,378 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-11-28 23:06:02,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:06:02,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-28 23:06:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:02,381 INFO L225 Difference]: With dead ends: 18 [2018-11-28 23:06:02,381 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 23:06:02,382 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 23:06:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 23:06:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:06:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-28 23:06:02,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-11-28 23:06:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:02,388 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-28 23:06:02,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:06:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-28 23:06:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:06:02,389 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:02,389 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:02,390 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:02,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:02,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2000259796, now seen corresponding path program 1 times [2018-11-28 23:06:02,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:02,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:06:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:06:02,428 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:06:02,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:06:02 BoogieIcfgContainer [2018-11-28 23:06:02,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:06:02,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:06:02,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:06:02,451 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:06:02,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:01" (3/4) ... [2018-11-28 23:06:02,454 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 23:06:02,495 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:06:02,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:06:02,496 INFO L168 Benchmark]: Toolchain (without parser) took 1613.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -105.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:02,498 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:02,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.47 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:02,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.46 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:02,500 INFO L168 Benchmark]: Boogie Preprocessor took 28.81 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:02,500 INFO L168 Benchmark]: RCFGBuilder took 394.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -152.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:02,501 INFO L168 Benchmark]: TraceAbstraction took 818.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:02,502 INFO L168 Benchmark]: Witness Printer took 44.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:02,507 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.47 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 22.46 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 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 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 394.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -152.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 818.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. * Witness Printer took 44.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x; [L15] int y; [L16] int z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND FALSE !(__VERIFIER_nondet_int() != 0) [L22] x = -1 VAL [x=-1, y=-2147483648, z=0] [L24] COND TRUE y<100 && z<100 VAL [x=-1, y=-2147483648, z=0] [L25] y+x VAL [x=-1, y=-2147483648, z=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 23 SDslu, 22 SDs, 0 SdLazy, 31 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...