./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o2-1.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_o2-1.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 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 0.1.24-30f4e4a [2019-11-28 02:54:00,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:54:00,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:54:00,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:54:00,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:54:00,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:54:00,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:54:00,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:54:00,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:54:00,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:54:00,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:54:00,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:54:00,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:54:00,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:54:00,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:54:00,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:54:00,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:54:00,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:54:00,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:54:00,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:54:00,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:54:00,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:54:00,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:54:00,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:54:00,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:54:00,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:54:00,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:54:00,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:54:00,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:54:00,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:54:00,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:54:00,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:54:00,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:54:00,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:54:00,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:54:00,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:54:00,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:54:00,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:54:00,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:54:00,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:54:00,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:54:00,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 02:54:00,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:54:00,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:54:00,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:54:00,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:54:00,415 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:54:00,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:54:00,415 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:54:00,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:54:00,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:54:00,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:54:00,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:54:00,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:54:00,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:54:00,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:54:00,419 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:54:00,419 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:54:00,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:54:00,419 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:54:00,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:54:00,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:54:00,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:54:00,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:54:00,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:54:00,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:54:00,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:54:00,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:54:00,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:54:00,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:54:00,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:54:00,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:54:00,422 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 -> a920ed9b3f96020f8bcfe1e60b1075faad4206fc [2019-11-28 02:54:00,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:54:00,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:54:00,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:54:00,797 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:54:00,798 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:54:00,799 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2019-11-28 02:54:00,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c13355b/9161efd2fb514a84a5c76b66fcc316ed/FLAG6c4a60ab3 [2019-11-28 02:54:01,268 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:54:01,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2019-11-28 02:54:01,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c13355b/9161efd2fb514a84a5c76b66fcc316ed/FLAG6c4a60ab3 [2019-11-28 02:54:01,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c13355b/9161efd2fb514a84a5c76b66fcc316ed [2019-11-28 02:54:01,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:54:01,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:54:01,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:54:01,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:54:01,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:54:01,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:01,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235f3141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01, skipping insertion in model container [2019-11-28 02:54:01,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:01,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:54:01,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:54:01,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:54:01,890 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:54:01,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:54:01,926 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:54:01,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01 WrapperNode [2019-11-28 02:54:01,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:54:01,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:54:01,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:54:01,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:54:01,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:01,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:01,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:54:01,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:54:01,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:54:01,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:54:02,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... [2019-11-28 02:54:02,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:54:02,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:54:02,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:54:02,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:54:02,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:54:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:54:02,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:54:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-28 02:54:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-28 02:54:02,284 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:54:02,285 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:54:02,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:02 BoogieIcfgContainer [2019-11-28 02:54:02,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:54:02,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:54:02,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:54:02,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:54:02,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:54:01" (1/3) ... [2019-11-28 02:54:02,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de6efe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:02, skipping insertion in model container [2019-11-28 02:54:02,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:01" (2/3) ... [2019-11-28 02:54:02,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de6efe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:02, skipping insertion in model container [2019-11-28 02:54:02,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:02" (3/3) ... [2019-11-28 02:54:02,294 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o2-1.c [2019-11-28 02:54:02,305 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:54:02,312 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:54:02,325 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:54:02,351 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:54:02,352 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:54:02,352 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:54:02,352 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:54:02,352 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:54:02,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:54:02,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:54:02,353 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:54:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-28 02:54:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:54:02,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:02,379 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:54:02,380 INFO L410 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:02,386 INFO L82 PathProgramCache]: Analyzing trace with hash 30579597, now seen corresponding path program 1 times [2019-11-28 02:54:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:02,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034257884] [2019-11-28 02:54:02,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:54:02,566 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 02:54:02,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034257884] [2019-11-28 02:54:02,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:54:02,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:54:02,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330512633] [2019-11-28 02:54:02,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:54:02,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:54:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:54:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:54:02,602 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-28 02:54:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:54:02,701 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-28 02:54:02,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:54:02,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-28 02:54:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:54:02,712 INFO L225 Difference]: With dead ends: 26 [2019-11-28 02:54:02,713 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 02:54:02,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:54:02,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 02:54:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 02:54:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:54:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-28 02:54:02,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2019-11-28 02:54:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:54:02,761 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-28 02:54:02,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:54:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-28 02:54:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 02:54:02,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:02,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:54:02,762 INFO L410 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:02,763 INFO L82 PathProgramCache]: Analyzing trace with hash 947967559, now seen corresponding path program 1 times [2019-11-28 02:54:02,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:02,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413087464] [2019-11-28 02:54:02,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:54:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:54:02,792 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:54:02,793 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:54:02,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:54:02 BoogieIcfgContainer [2019-11-28 02:54:02,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:54:02,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:54:02,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:54:02,813 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:54:02,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:02" (3/4) ... [2019-11-28 02:54:02,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:54:02,854 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:54:02,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:54:02,857 INFO L168 Benchmark]: Toolchain (without parser) took 1195.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -126.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:02,858 INFO L168 Benchmark]: CDTParser took 0.26 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 02:54:02,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.71 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:02,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.57 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:54:02,860 INFO L168 Benchmark]: Boogie Preprocessor took 75.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:02,861 INFO L168 Benchmark]: RCFGBuilder took 245.97 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:02,862 INFO L168 Benchmark]: TraceAbstraction took 525.40 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:02,863 INFO L168 Benchmark]: Witness Printer took 41.32 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 02:54:02,868 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 265.71 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 36.57 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.97 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 525.40 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.32 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: 0.4s, 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, 0.0s 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, 0.0s 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...