./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 30650645c50d34fcfc42e8853470c3e29a63ab6d ............................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 01:23:07,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:23:07,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:23:07,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:23:07,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:23:07,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:23:07,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:23:07,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:23:07,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:23:07,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:23:07,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:23:07,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:23:07,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:23:07,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:23:07,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:23:07,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:23:07,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:23:07,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:23:07,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:23:07,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:23:07,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:23:07,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:23:07,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:23:07,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:23:07,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:23:07,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:23:07,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:23:07,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:23:07,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:23:07,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:23:07,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:23:07,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:23:07,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:23:07,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:23:07,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:23:07,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:23:07,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:23:07,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:23:07,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:23:07,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:23:07,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:23:07,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:23:07,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:23:07,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:23:07,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:23:07,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:23:07,250 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:23:07,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:23:07,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:23:07,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:23:07,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:23:07,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:23:07,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:23:07,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:23:07,252 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:23:07,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:23:07,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:23:07,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:23:07,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:23:07,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:23:07,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:23:07,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:23:07,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:23:07,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:23:07,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:23:07,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:23:07,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:23:07,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:23:07,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:23:07,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:23:07,257 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30650645c50d34fcfc42e8853470c3e29a63ab6d [2020-07-29 01:23:07,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:23:07,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:23:07,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:23:07,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:23:07,659 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:23:07,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2020-07-29 01:23:07,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a289a9773/01e730f843e24c3297efab94c31ce369/FLAG68426a8e0 [2020-07-29 01:23:08,179 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:23:08,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2020-07-29 01:23:08,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a289a9773/01e730f843e24c3297efab94c31ce369/FLAG68426a8e0 [2020-07-29 01:23:08,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a289a9773/01e730f843e24c3297efab94c31ce369 [2020-07-29 01:23:08,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:23:08,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:23:08,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:23:08,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:23:08,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:23:08,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6014ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08, skipping insertion in model container [2020-07-29 01:23:08,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:23:08,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:23:08,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:23:08,806 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:23:08,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:23:08,837 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:23:08,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08 WrapperNode [2020-07-29 01:23:08,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:23:08,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:23:08,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:23:08,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:23:08,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:23:08,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:23:08,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:23:08,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:23:08,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (1/1) ... [2020-07-29 01:23:08,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:23:08,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:23:08,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:23:08,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:23:08,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (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 [2020-07-29 01:23:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:23:09,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:23:09,248 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:23:09,248 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:23:09,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:09 BoogieIcfgContainer [2020-07-29 01:23:09,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:23:09,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:23:09,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:23:09,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:23:09,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:23:08" (1/3) ... [2020-07-29 01:23:09,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646b7e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:23:09, skipping insertion in model container [2020-07-29 01:23:09,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:08" (2/3) ... [2020-07-29 01:23:09,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646b7e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:23:09, skipping insertion in model container [2020-07-29 01:23:09,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:09" (3/3) ... [2020-07-29 01:23:09,261 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2020-07-29 01:23:09,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:23:09,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-29 01:23:09,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-29 01:23:09,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:23:09,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:23:09,365 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:23:09,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:23:09,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:23:09,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:23:09,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:23:09,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:23:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-29 01:23:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-07-29 01:23:09,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:23:09,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-07-29 01:23:09,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:23:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:23:09,407 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2020-07-29 01:23:09,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:23:09,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710980997] [2020-07-29 01:23:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:23:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:23:09,569 INFO L280 TraceCheckUtils]: 0: Hoare triple {17#true} havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~n~0;havoc main_~i~0;havoc main_~n~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {19#(<= ULTIMATE.start_main_~n~0 2147483647)} is VALID [2020-07-29 01:23:09,571 INFO L280 TraceCheckUtils]: 1: Hoare triple {19#(<= ULTIMATE.start_main_~n~0 2147483647)} assume !(main_~n~0 - 1 <= 2147483647); {18#false} is VALID [2020-07-29 01:23:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:23:09,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710980997] [2020-07-29 01:23:09,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:23:09,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-29 01:23:09,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124351750] [2020-07-29 01:23:09,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-07-29 01:23:09,581 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:23:09,584 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:23:09,599 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:23:09,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-29 01:23:09,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:23:09,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:23:09,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:23:09,610 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-29 01:23:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:09,682 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-29 01:23:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:23:09,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-07-29 01:23:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:23:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:23:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-07-29 01:23:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:23:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-07-29 01:23:09,692 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 18 transitions. [2020-07-29 01:23:09,735 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:23:09,745 INFO L225 Difference]: With dead ends: 18 [2020-07-29 01:23:09,745 INFO L226 Difference]: Without dead ends: 9 [2020-07-29 01:23:09,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:23:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-07-29 01:23:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-07-29 01:23:09,784 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:23:09,785 INFO L82 GeneralOperation]: Start isEquivalent. First operand 9 states. Second operand 9 states. [2020-07-29 01:23:09,785 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 9 states. [2020-07-29 01:23:09,786 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 9 states. [2020-07-29 01:23:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:09,788 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-07-29 01:23:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-29 01:23:09,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:23:09,789 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:23:09,789 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 9 states. [2020-07-29 01:23:09,789 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 9 states. [2020-07-29 01:23:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:09,791 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-07-29 01:23:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-29 01:23:09,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:23:09,791 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:23:09,792 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:23:09,792 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:23:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-29 01:23:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-07-29 01:23:09,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 2 [2020-07-29 01:23:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:23:09,795 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-07-29 01:23:09,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-29 01:23:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-29 01:23:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-29 01:23:09,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:23:09,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-29 01:23:09,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:23:09,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:23:09,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:23:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash 30849, now seen corresponding path program 1 times [2020-07-29 01:23:09,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:23:09,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373050429] [2020-07-29 01:23:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:23:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:23:09,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:23:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:23:09,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:23:09,825 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:23:09,825 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:23:09,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:23:09,842 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-29 01:23:09,842 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-29 01:23:09,842 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-29 01:23:09,842 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-29 01:23:09,843 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-29 01:23:09,844 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-29 01:23:09,844 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-29 01:23:09,844 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-29 01:23:09,844 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-29 01:23:09,844 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-29 01:23:09,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:23:09 BoogieIcfgContainer [2020-07-29 01:23:09,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:23:09,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:23:09,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:23:09,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:23:09,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:09" (3/4) ... [2020-07-29 01:23:09,851 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 01:23:09,892 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:23:09,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:23:09,896 INFO L168 Benchmark]: Toolchain (without parser) took 1329.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -140.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:09,896 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:23:09,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:09,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:23:09,899 INFO L168 Benchmark]: Boogie Preprocessor took 75.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 949.5 MB in the beginning and 1.2 GB in the end (delta: -208.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:09,900 INFO L168 Benchmark]: RCFGBuilder took 301.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:09,901 INFO L168 Benchmark]: TraceAbstraction took 593.62 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: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:09,901 INFO L168 Benchmark]: Witness Printer took 45.05 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. [2020-07-29 01:23:09,905 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 35.81 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 949.5 MB in the beginning and 1.2 GB in the end (delta: -208.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 301.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 593.62 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: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * Witness Printer took 45.05 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: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, n; [L15] n = __VERIFIER_nondet_int() [L16] n - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...