./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer --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 2a919b25da354c99a27159953a248cd7db9b3c80 ................................................................................................................................................................................................................................................................ 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 0.1.23-1dbac8b [2018-10-27 05:42:37,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:42:37,642 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:42:37,651 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:42:37,651 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:42:37,652 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:42:37,652 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:42:37,654 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:42:37,655 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:42:37,656 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:42:37,657 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:42:37,657 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:42:37,658 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:42:37,658 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:42:37,660 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:42:37,660 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:42:37,661 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:42:37,662 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:42:37,664 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:42:37,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:42:37,666 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:42:37,667 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:42:37,669 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:42:37,669 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:42:37,669 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:42:37,670 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:42:37,670 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:42:37,672 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:42:37,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:42:37,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:42:37,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:42:37,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:42:37,674 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:42:37,674 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:42:37,676 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:42:37,676 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:42:37,676 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-10-27 05:42:37,688 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:42:37,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:42:37,689 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:42:37,689 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 05:42:37,690 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 05:42:37,690 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 05:42:37,690 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 05:42:37,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:42:37,690 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:42:37,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:42:37,692 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:42:37,692 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:42:37,692 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:42:37,692 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:42:37,693 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:42:37,693 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:42:37,693 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:42:37,693 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:42:37,693 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:42:37,693 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:42:37,694 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:42:37,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:42:37,694 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:42:37,694 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:42:37,694 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:42:37,694 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 05:42:37,695 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:42:37,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:42:37,695 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer 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 -> 2a919b25da354c99a27159953a248cd7db9b3c80 [2018-10-27 05:42:37,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:42:37,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:42:37,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:42:37,744 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:42:37,744 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:42:37,745 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02_false-no-overflow.c [2018-10-27 05:42:37,796 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/data/3ea692fdd/e681c202064b4ca8bcc8691c2fc60564/FLAG2230ad148 [2018-10-27 05:42:38,181 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:42:38,182 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02_false-no-overflow.c [2018-10-27 05:42:38,187 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/data/3ea692fdd/e681c202064b4ca8bcc8691c2fc60564/FLAG2230ad148 [2018-10-27 05:42:38,199 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/data/3ea692fdd/e681c202064b4ca8bcc8691c2fc60564 [2018-10-27 05:42:38,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:42:38,203 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:42:38,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:42:38,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:42:38,207 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:42:38,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40893eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38, skipping insertion in model container [2018-10-27 05:42:38,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:42:38,233 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:42:38,335 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:42:38,337 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:42:38,349 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:42:38,357 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:42:38,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38 WrapperNode [2018-10-27 05:42:38,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:42:38,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:42:38,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:42:38,359 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:42:38,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... [2018-10-27 05:42:38,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:42:38,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:42:38,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:42:38,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:42:38,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/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 [2018-10-27 05:42:38,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:42:38,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:42:38,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:42:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-27 05:42:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:42:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:42:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:42:38,785 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:42:38,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:38 BoogieIcfgContainer [2018-10-27 05:42:38,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:42:38,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:42:38,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:42:38,789 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:42:38,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:38" (1/3) ... [2018-10-27 05:42:38,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aceadbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:38, skipping insertion in model container [2018-10-27 05:42:38,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:38" (2/3) ... [2018-10-27 05:42:38,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aceadbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:38, skipping insertion in model container [2018-10-27 05:42:38,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:38" (3/3) ... [2018-10-27 05:42:38,794 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.02_false-no-overflow.c [2018-10-27 05:42:38,804 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:42:38,827 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-27 05:42:38,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-27 05:42:38,891 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 05:42:38,892 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:42:38,892 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:42:38,892 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:42:38,892 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:42:38,892 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:42:38,893 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:42:38,893 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:42:38,893 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:42:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-27 05:42:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 05:42:38,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:38,937 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:38,951 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:38,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:38,957 INFO L82 PathProgramCache]: Analyzing trace with hash 604672971, now seen corresponding path program 1 times [2018-10-27 05:42:38,959 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:42:38,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:42:39,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:39,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:39,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:39,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:39,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:42:39,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:42:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:42:39,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:42:39,188 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2018-10-27 05:42:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:39,319 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-27 05:42:39,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:42:39,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-27 05:42:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:39,328 INFO L225 Difference]: With dead ends: 25 [2018-10-27 05:42:39,328 INFO L226 Difference]: Without dead ends: 13 [2018-10-27 05:42:39,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:42:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-27 05:42:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-27 05:42:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-27 05:42:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-27 05:42:39,359 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2018-10-27 05:42:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:39,360 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-27 05:42:39,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:42:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-27 05:42:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:42:39,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:39,360 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:39,361 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:39,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1564992965, now seen corresponding path program 1 times [2018-10-27 05:42:39,361 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:42:39,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:42:39,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:39,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:39,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:42:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:42:39,389 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 05:42:39,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:42:39 BoogieIcfgContainer [2018-10-27 05:42:39,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:42:39,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:42:39,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:42:39,414 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:42:39,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:38" (3/4) ... [2018-10-27 05:42:39,416 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 05:42:39,452 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_685b35db-bf0c-4067-b772-16ae55d06cef/bin-2019/uautomizer/witness.graphml [2018-10-27 05:42:39,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:42:39,453 INFO L168 Benchmark]: Toolchain (without parser) took 1251.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 959.8 MB in the beginning and 1.2 GB in the end (delta: -201.7 MB). Peak memory consumption was 153.7 kB. Max. memory is 11.5 GB. [2018-10-27 05:42:39,455 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:39,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.17 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:39,456 INFO L168 Benchmark]: Boogie Preprocessor took 26.46 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:39,456 INFO L168 Benchmark]: RCFGBuilder took 400.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 949.1 MB in the beginning and 1.2 GB in the end (delta: -242.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:39,457 INFO L168 Benchmark]: TraceAbstraction took 626.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:39,458 INFO L168 Benchmark]: Witness Printer took 39.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:39,461 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.17 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.46 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 400.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 949.1 MB in the beginning and 1.2 GB in the end (delta: -242.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 626.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. * Witness Printer took 39.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x < 0 VAL [x=-2147483647, y=-2] [L27] x + y VAL [x=-2147483647, y=-2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 10 SDslu, 15 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...