./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/recursive-simple/id_b3_o5-1.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 33da588ec0d1cf3fd422899ff14f5b1cb710f42e ................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 02:54:01,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:54:01,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:54:01,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:54:01,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:54:01,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:54:01,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:54:01,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:54:01,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:54:01,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:54:01,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:54:01,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:54:01,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:54:01,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:54:02,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:54:02,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:54:02,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:54:02,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:54:02,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:54:02,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:54:02,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:54:02,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:54:02,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:54:02,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:54:02,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:54:02,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:54:02,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:54:02,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:54:02,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:54:02,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:54:02,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:54:02,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:54:02,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:54:02,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:54:02,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:54:02,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:54:02,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:54:02,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:54:02,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:54:02,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:54:02,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:54:02,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 02:54:02,054 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:54:02,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:54:02,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:54:02,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:54:02,057 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:54:02,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:54:02,058 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:54:02,058 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:54:02,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:54:02,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:54:02,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:54:02,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:54:02,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:54:02,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:54:02,061 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:54:02,061 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:54:02,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:54:02,062 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:54:02,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:54:02,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:54:02,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:54:02,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:54:02,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:54:02,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:54:02,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:54:02,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:54:02,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:54:02,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:54:02,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:54:02,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:54:02,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 33da588ec0d1cf3fd422899ff14f5b1cb710f42e [2019-11-28 02:54:02,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:54:02,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:54:02,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:54:02,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:54:02,416 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:54:02,417 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2019-11-28 02:54:02,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b2bf004/e8891d5aaa3b43e3a89d882641ad11ab/FLAGd86eacee9 [2019-11-28 02:54:02,972 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:54:02,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2019-11-28 02:54:02,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b2bf004/e8891d5aaa3b43e3a89d882641ad11ab/FLAGd86eacee9 [2019-11-28 02:54:03,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b2bf004/e8891d5aaa3b43e3a89d882641ad11ab [2019-11-28 02:54:03,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:54:03,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:54:03,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:54:03,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:54:03,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:54:03,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b545c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03, skipping insertion in model container [2019-11-28 02:54:03,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:54:03,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:54:03,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:54:03,626 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:54:03,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:54:03,651 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:54:03,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03 WrapperNode [2019-11-28 02:54:03,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:54:03,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:54:03,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:54:03,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:54:03,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:54:03,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:54:03,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:54:03,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:54:03,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... [2019-11-28 02:54:03,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:54:03,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:54:03,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:54:03,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:54:03,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:54:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:54:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:54:03,828 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-28 02:54:03,828 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-28 02:54:03,999 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:54:03,999 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:54:04,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:04 BoogieIcfgContainer [2019-11-28 02:54:04,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:54:04,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:54:04,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:54:04,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:54:04,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:54:03" (1/3) ... [2019-11-28 02:54:04,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64392be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:04, skipping insertion in model container [2019-11-28 02:54:04,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:03" (2/3) ... [2019-11-28 02:54:04,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64392be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:04, skipping insertion in model container [2019-11-28 02:54:04,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:04" (3/3) ... [2019-11-28 02:54:04,010 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-1.c [2019-11-28 02:54:04,020 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:54:04,027 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:54:04,039 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:54:04,065 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:54:04,065 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:54:04,065 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:54:04,065 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:54:04,066 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:54:04,066 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:54:04,066 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:54:04,066 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:54:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-28 02:54:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:54:04,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:04,092 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:54:04,093 INFO L410 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash 30579597, now seen corresponding path program 1 times [2019-11-28 02:54:04,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:04,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947064913] [2019-11-28 02:54:04,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:54:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:54:04,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947064913] [2019-11-28 02:54:04,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:54:04,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:54:04,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902025817] [2019-11-28 02:54:04,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:54:04,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:54:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:54:04,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:54:04,416 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-28 02:54:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:54:04,505 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-28 02:54:04,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:54:04,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-28 02:54:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:54:04,517 INFO L225 Difference]: With dead ends: 26 [2019-11-28 02:54:04,518 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 02:54:04,522 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:54:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 02:54:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 02:54:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:54:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-28 02:54:04,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2019-11-28 02:54:04,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:54:04,567 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-28 02:54:04,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:54:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-28 02:54:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 02:54:04,568 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:04,568 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:54:04,568 INFO L410 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:04,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:04,569 INFO L82 PathProgramCache]: Analyzing trace with hash 947967559, now seen corresponding path program 1 times [2019-11-28 02:54:04,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:04,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52324956] [2019-11-28 02:54:04,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:54:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:54:04,602 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:54:04,603 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:54:04,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:54:04 BoogieIcfgContainer [2019-11-28 02:54:04,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:54:04,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:54:04,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:54:04,630 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:54:04,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:04" (3/4) ... [2019-11-28 02:54:04,633 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:54:04,671 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:54:04,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:54:04,674 INFO L168 Benchmark]: Toolchain (without parser) took 1279.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,675 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:54:04,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.34 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 945.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,677 INFO L168 Benchmark]: Boogie Preprocessor took 23.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,678 INFO L168 Benchmark]: RCFGBuilder took 240.66 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,679 INFO L168 Benchmark]: TraceAbstraction took 627.13 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,680 INFO L168 Benchmark]: Witness Printer took 42.01 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:04,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.34 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 945.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 84.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 240.66 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 627.13 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * Witness Printer took 42.01 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: 6.6 MB). Peak memory consumption was 6.6 MB. 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 2 procedures, 23 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 31 SDslu, 22 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...