./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive-simple/id_b3_o2_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive-simple/id_b3_o2_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a920ed9b3f96020f8bcfe1e60b1075faad4206fc ..................................................................................................................................................................................................................................................................... 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 23:10:51,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:10:51,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:10:51,806 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:10:51,806 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:10:51,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:10:51,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:10:51,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:10:51,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:10:51,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:10:51,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:10:51,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:10:51,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:10:51,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:10:51,816 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:10:51,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:10:51,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:10:51,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:10:51,822 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:10:51,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:10:51,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:10:51,826 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:10:51,828 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:10:51,829 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:10:51,829 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:10:51,830 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:10:51,831 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:10:51,832 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:10:51,832 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:10:51,834 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:10:51,834 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:10:51,835 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:10:51,835 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:10:51,835 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:10:51,836 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:10:51,837 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:10:51,837 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-28 23:10:51,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:10:51,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:10:51,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:10:51,854 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:10:51,855 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:10:51,855 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:10:51,855 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:10:51,856 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:10:51,856 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:10:51,856 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:10:51,856 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:10:51,856 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:10:51,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:10:51,857 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:10:51,857 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:10:51,857 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:10:51,857 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:10:51,857 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:10:51,857 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:10:51,858 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:10:51,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:10:51,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:10:51,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:10:51,858 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:10:51,858 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:10:51,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:10:51,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:10:51,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:10:51,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:10:51,859 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:10:51,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:10:51,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:10:51,860 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a920ed9b3f96020f8bcfe1e60b1075faad4206fc [2018-11-28 23:10:51,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:10:51,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:10:51,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:10:51,912 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:10:51,913 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:10:51,913 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_b3_o2_false-no-overflow.c [2018-11-28 23:10:51,977 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050b3b137/a1d8348a66c04d33aa31945914ba8d7b/FLAG5ea2bc9f3 [2018-11-28 23:10:52,403 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:10:52,404 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_b3_o2_false-no-overflow.c [2018-11-28 23:10:52,413 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050b3b137/a1d8348a66c04d33aa31945914ba8d7b/FLAG5ea2bc9f3 [2018-11-28 23:10:52,784 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050b3b137/a1d8348a66c04d33aa31945914ba8d7b [2018-11-28 23:10:52,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:10:52,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:10:52,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:10:52,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:10:52,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:10:52,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:10:52" (1/1) ... [2018-11-28 23:10:52,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be567c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:52, skipping insertion in model container [2018-11-28 23:10:52,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:10:52" (1/1) ... [2018-11-28 23:10:52,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:10:52,826 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:10:53,014 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:10:53,020 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:10:53,041 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:10:53,055 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:10:53,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53 WrapperNode [2018-11-28 23:10:53,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:10:53,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:10:53,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:10:53,057 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:10:53,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:10:53,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:10:53,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:10:53,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:10:53,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (1/1) ... [2018-11-28 23:10:53,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:10:53,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:10:53,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:10:53,096 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:10:53,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (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 23:10:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:10:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:10:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:10:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:10:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:10:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:10:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-28 23:10:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-28 23:10:53,445 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:10:53,445 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 23:10:53,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:10:53 BoogieIcfgContainer [2018-11-28 23:10:53,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:10:53,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:10:53,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:10:53,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:10:53,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:10:52" (1/3) ... [2018-11-28 23:10:53,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73280cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:10:53, skipping insertion in model container [2018-11-28 23:10:53,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:10:53" (2/3) ... [2018-11-28 23:10:53,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73280cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:10:53, skipping insertion in model container [2018-11-28 23:10:53,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:10:53" (3/3) ... [2018-11-28 23:10:53,456 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o2_false-no-overflow.c [2018-11-28 23:10:53,466 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:10:53,475 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 23:10:53,495 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 23:10:53,532 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:10:53,533 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:10:53,533 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:10:53,533 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:10:53,533 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:10:53,533 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:10:53,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:10:53,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:10:53,534 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:10:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 23:10:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:10:53,556 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:10:53,557 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:10:53,559 INFO L423 AbstractCegarLoop]: === Iteration 1 === [idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:10:53,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:10:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1269657425, now seen corresponding path program 1 times [2018-11-28 23:10:53,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:10:53,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:10:53,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:10:53,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:10:53,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:10:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:10:53,894 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 23:10:53,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:10:53,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:10:53,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:10:53,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:10:53,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:10:53,920 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-28 23:10:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:10:54,041 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-28 23:10:54,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:10:54,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-28 23:10:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:10:54,054 INFO L225 Difference]: With dead ends: 32 [2018-11-28 23:10:54,055 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 23:10:54,060 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:10:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 23:10:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 23:10:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 23:10:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-28 23:10:54,107 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2018-11-28 23:10:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:10:54,111 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-28 23:10:54,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:10:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-28 23:10:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 23:10:54,112 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:10:54,112 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:10:54,112 INFO L423 AbstractCegarLoop]: === Iteration 2 === [idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:10:54,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:10:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash -704674457, now seen corresponding path program 1 times [2018-11-28 23:10:54,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:10:54,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:10:54,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:10:54,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:10:54,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:10:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:10:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:10:54,175 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:10:54,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:10:54 BoogieIcfgContainer [2018-11-28 23:10:54,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:10:54,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:10:54,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:10:54,211 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:10:54,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:10:53" (3/4) ... [2018-11-28 23:10:54,215 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 23:10:54,274 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:10:54,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:10:54,275 INFO L168 Benchmark]: Toolchain (without parser) took 1486.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:10:54,278 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:10:54,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.14 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:10:54,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.04 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:10:54,280 INFO L168 Benchmark]: Boogie Preprocessor took 17.76 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:10:54,281 INFO L168 Benchmark]: RCFGBuilder took 350.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:10:54,283 INFO L168 Benchmark]: TraceAbstraction took 763.16 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:10:54,284 INFO L168 Benchmark]: Witness Printer took 63.35 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 23:10:54,292 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.14 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 20.04 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.76 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 350.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 763.16 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * Witness Printer took 63.35 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: 6]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL id(input) VAL [\old(x)=-2147483648] [L5] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L6] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 4 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 30 SDslu, 38 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 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...