./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.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/NestedRecursion_1a-1.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 37ca313e0a5caeb18e76088a0c810f3d29920c7c ......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:22:43,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:22:43,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:22:43,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:22:43,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:22:43,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:22:43,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:22:43,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:22:43,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:22:43,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:22:43,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:22:43,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:22:43,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:22:43,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:22:43,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:22:43,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:22:43,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:22:43,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:22:43,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:22:43,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:22:43,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:22:43,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:22:43,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:22:43,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:22:43,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:22:43,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:22:43,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:22:43,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:22:43,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:22:43,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:22:43,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:22:43,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:22:43,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:22:43,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:22:43,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:22:43,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:22:43,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:22:43,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:22:43,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:22:43,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:22:43,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:22:43,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:22:43,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:22:43,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:22:43,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:22:43,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:22:43,331 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:22:43,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:22:43,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:22:43,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:22:43,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:22:43,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:22:43,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:22:43,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:22:43,333 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:22:43,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:22:43,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:22:43,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:22:43,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:22:43,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:22:43,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:22:43,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:22:43,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:22:43,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:22:43,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:22:43,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:22:43,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:22:43,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:22:43,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:22:43,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:22:43,338 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 -> 37ca313e0a5caeb18e76088a0c810f3d29920c7c [2020-07-29 01:22:43,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:22:43,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:22:43,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:22:43,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:22:43,707 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:22:43,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c [2020-07-29 01:22:43,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a9d3505/07811fc03d7e43a29c3007fea8c3b6ee/FLAGcc88c5ac3 [2020-07-29 01:22:44,163 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:22:44,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c [2020-07-29 01:22:44,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a9d3505/07811fc03d7e43a29c3007fea8c3b6ee/FLAGcc88c5ac3 [2020-07-29 01:22:44,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a9d3505/07811fc03d7e43a29c3007fea8c3b6ee [2020-07-29 01:22:44,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:22:44,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:22:44,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:22:44,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:22:44,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:22:44,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c4e9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44, skipping insertion in model container [2020-07-29 01:22:44,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:22:44,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:22:44,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:22:44,794 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:22:44,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:22:44,827 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:22:44,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44 WrapperNode [2020-07-29 01:22:44,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:22:44,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:22:44,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:22:44,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:22:44,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:22:44,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:22:44,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:22:44,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:22:44,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (1/1) ... [2020-07-29 01:22:44,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:22:44,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:22:44,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:22:44,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:22:44,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (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 01:22:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-07-29 01:22:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-07-29 01:22:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-07-29 01:22:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-07-29 01:22:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:22:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:22:45,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:22:45,407 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:22:45,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:45 BoogieIcfgContainer [2020-07-29 01:22:45,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:22:45,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:22:45,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:22:45,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:22:45,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:22:44" (1/3) ... [2020-07-29 01:22:45,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f58e060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:22:45, skipping insertion in model container [2020-07-29 01:22:45,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:44" (2/3) ... [2020-07-29 01:22:45,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f58e060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:22:45, skipping insertion in model container [2020-07-29 01:22:45,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:45" (3/3) ... [2020-07-29 01:22:45,419 INFO L109 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1a-1.c [2020-07-29 01:22:45,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:22:45,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-07-29 01:22:45,448 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-07-29 01:22:45,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:22:45,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:22:45,471 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:22:45,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:22:45,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:22:45,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:22:45,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:22:45,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:22:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-29 01:22:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:22:45,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:22:45,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:22:45,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:22:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:22:45,502 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2020-07-29 01:22:45,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:22:45,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135413792] [2020-07-29 01:22:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:22:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:22:45,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:22:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:22:45,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:22:45,614 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:22:45,614 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:22:45,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:22:45,628 FATAL L488 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret6 := rec2(~x~0); [2020-07-29 01:22:45,629 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportCounterexampleResult(TraceAbstractionStarter.java:626) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResults(TraceAbstractionStarter.java:525) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:383) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:22:45,634 INFO L168 Benchmark]: Toolchain (without parser) took 1073.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.9 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -52.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:45,635 INFO L168 Benchmark]: CDTParser took 0.26 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 01:22:45,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.70 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:45,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.9 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:45,638 INFO L168 Benchmark]: Boogie Preprocessor took 21.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:45,639 INFO L168 Benchmark]: RCFGBuilder took 471.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:45,640 INFO L168 Benchmark]: TraceAbstraction took 217.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:45,644 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 0.26 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 258.70 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 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 88.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.9 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 471.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 217.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:216) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...