./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06_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_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/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 7a28cf8e40dd69f496c91c87e17176239a2f164b ..................................................................................................................................................................................................................................................................... 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 [2018-11-10 12:11:46,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:11:46,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:11:46,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:11:46,491 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:11:46,492 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:11:46,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:11:46,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:11:46,496 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:11:46,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:11:46,497 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:11:46,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:11:46,498 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:11:46,499 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:11:46,499 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:11:46,500 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:11:46,501 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:11:46,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:11:46,503 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:11:46,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:11:46,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:11:46,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:11:46,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:11:46,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:11:46,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:11:46,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:11:46,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:11:46,510 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:11:46,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:11:46,511 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:11:46,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:11:46,512 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:11:46,512 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:11:46,512 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:11:46,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:11:46,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:11:46,514 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 12:11:46,523 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:11:46,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:11:46,524 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:11:46,524 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:11:46,525 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:11:46,525 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:11:46,525 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:11:46,525 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:11:46,525 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 12:11:46,525 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:11:46,526 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:11:46,527 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:11:46,527 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:11:46,527 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:11:46,527 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:11:46,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:11:46,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:11:46,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:11:46,528 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:11:46,528 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:11:46,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:11:46,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:11:46,528 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_fb494ad6-dbf7-4d26-9505-9018068652a1/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 -> 7a28cf8e40dd69f496c91c87e17176239a2f164b [2018-11-10 12:11:46,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:11:46,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:11:46,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:11:46,561 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:11:46,561 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:11:46,562 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06_false-no-overflow.c [2018-11-10 12:11:46,598 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/data/6b2e6cdcb/4b311b47e4a1449e8b8806ee41c9e522/FLAG6b9115135 [2018-11-10 12:11:46,992 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:11:46,992 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06_false-no-overflow.c [2018-11-10 12:11:46,996 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/data/6b2e6cdcb/4b311b47e4a1449e8b8806ee41c9e522/FLAG6b9115135 [2018-11-10 12:11:47,005 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/data/6b2e6cdcb/4b311b47e4a1449e8b8806ee41c9e522 [2018-11-10 12:11:47,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:11:47,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:11:47,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:11:47,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:11:47,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:11:47,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb581ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47, skipping insertion in model container [2018-11-10 12:11:47,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:11:47,033 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:11:47,128 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:11:47,130 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:11:47,140 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:11:47,149 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:11:47,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47 WrapperNode [2018-11-10 12:11:47,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:11:47,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:11:47,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:11:47,150 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:11:47,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... [2018-11-10 12:11:47,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:11:47,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:11:47,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:11:47,167 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:11:47,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/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 [2018-11-10 12:11:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:11:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:11:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 12:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:11:47,373 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:11:47,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:47 BoogieIcfgContainer [2018-11-10 12:11:47,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:11:47,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:11:47,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:11:47,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:11:47,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:11:47" (1/3) ... [2018-11-10 12:11:47,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb4966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:11:47, skipping insertion in model container [2018-11-10 12:11:47,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:47" (2/3) ... [2018-11-10 12:11:47,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb4966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:11:47, skipping insertion in model container [2018-11-10 12:11:47,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:47" (3/3) ... [2018-11-10 12:11:47,381 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.06_false-no-overflow.c [2018-11-10 12:11:47,387 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:11:47,393 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-10 12:11:47,406 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-10 12:11:47,426 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:11:47,427 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:11:47,427 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:11:47,427 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:11:47,427 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:11:47,427 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:11:47,427 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:11:47,427 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:11:47,428 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:11:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-10 12:11:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 12:11:47,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:47,448 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:47,450 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:11:47,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash -895809593, now seen corresponding path program 1 times [2018-11-10 12:11:47,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:11:47,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:11:47,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:47,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:47,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:47,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:47,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 12:11:47,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:11:47,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:11:47,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:47,593 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-11-10 12:11:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:47,660 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-10 12:11:47,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:11:47,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-10 12:11:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:47,669 INFO L225 Difference]: With dead ends: 42 [2018-11-10 12:11:47,670 INFO L226 Difference]: Without dead ends: 28 [2018-11-10 12:11:47,672 INFO L605 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 [2018-11-10 12:11:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-10 12:11:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2018-11-10 12:11:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 12:11:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-10 12:11:47,700 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-11-10 12:11:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:47,701 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-10 12:11:47,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:11:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-10 12:11:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 12:11:47,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:47,701 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:47,702 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:11:47,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:47,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2000293559, now seen corresponding path program 1 times [2018-11-10 12:11:47,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:11:47,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:11:47,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:47,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:47,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:11:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:11:47,728 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 12:11:47,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:11:47 BoogieIcfgContainer [2018-11-10 12:11:47,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:11:47,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:11:47,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:11:47,742 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:11:47,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:47" (3/4) ... [2018-11-10 12:11:47,744 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 12:11:47,777 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fb494ad6-dbf7-4d26-9505-9018068652a1/bin-2019/uautomizer/witness.graphml [2018-11-10 12:11:47,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:11:47,778 INFO L168 Benchmark]: Toolchain (without parser) took 769.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:47,779 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:47,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.71 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:47,780 INFO L168 Benchmark]: Boogie Preprocessor took 17.32 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:47,780 INFO L168 Benchmark]: RCFGBuilder took 206.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 944.1 MB in the beginning and 1.2 GB in the end (delta: -210.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:47,780 INFO L168 Benchmark]: TraceAbstraction took 367.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:47,781 INFO L168 Benchmark]: Witness Printer took 35.40 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:47,782 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.71 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.32 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 944.1 MB in the beginning and 1.2 GB in the end (delta: -210.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 367.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. * Witness Printer took 35.40 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] COND TRUE x < 0 VAL [x=-2147483647, y=0, z=-2] [L28] x + z VAL [x=-2147483647, y=0, z=-2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 11 SDslu, 34 SDs, 0 SdLazy, 15 SolverSat, 2 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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...