./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/sum_non.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- 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/recursive-simple/sum_non.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 d40444e4cd2a33c7365a8211a19737bb4f6f43ea ......................................................................................................................................................................................................................................................................................................................................................................................... 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*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_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 01:24:28,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:28,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:28,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:28,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:28,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:28,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:28,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:28,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:28,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:28,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:28,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:28,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:28,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:28,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:28,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:28,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:28,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:28,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:28,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:28,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:28,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:28,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:28,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:28,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:28,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:28,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:28,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:28,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:28,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:28,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:28,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:28,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:28,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:28,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:28,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:28,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:28,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:28,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:28,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:28,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:28,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-07-29 01:24:28,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:28,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:28,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:28,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:28,754 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:28,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:28,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:24:28,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:28,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:28,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:24:28,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:28,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:28,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:28,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:28,756 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:28,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:24:28,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:28,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:28,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:28,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:28,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:28,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:28,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:28,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:28,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:28,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:28,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:28,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:28,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:28,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:28,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:28,760 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 -> d40444e4cd2a33c7365a8211a19737bb4f6f43ea [2020-07-29 01:24:29,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:29,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:29,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:29,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:29,118 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:29,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_non.c [2020-07-29 01:24:29,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d105fd6e/3f60ffcb42114f9d8502261a4a82c471/FLAG177ab0c7e [2020-07-29 01:24:29,672 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:29,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non.c [2020-07-29 01:24:29,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d105fd6e/3f60ffcb42114f9d8502261a4a82c471/FLAG177ab0c7e [2020-07-29 01:24:29,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d105fd6e/3f60ffcb42114f9d8502261a4a82c471 [2020-07-29 01:24:30,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:30,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:30,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:30,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:30,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:30,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:29" (1/1) ... [2020-07-29 01:24:30,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb28936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30, skipping insertion in model container [2020-07-29 01:24:30,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:29" (1/1) ... [2020-07-29 01:24:30,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:30,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:30,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:30,215 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:30,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:30,249 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:30,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30 WrapperNode [2020-07-29 01:24:30,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:30,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:30,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:30,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:30,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:30,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:30,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:30,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:30,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (1/1) ... [2020-07-29 01:24:30,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:30,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:30,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:30,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:30,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (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 01:24:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:30,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-29 01:24:30,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-29 01:24:30,887 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:30,887 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:24:30,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:30 BoogieIcfgContainer [2020-07-29 01:24:30,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:30,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:30,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:30,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:30,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:29" (1/3) ... [2020-07-29 01:24:30,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44de1881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:30, skipping insertion in model container [2020-07-29 01:24:30,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:30" (2/3) ... [2020-07-29 01:24:30,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44de1881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:30, skipping insertion in model container [2020-07-29 01:24:30,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:30" (3/3) ... [2020-07-29 01:24:30,903 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non.c [2020-07-29 01:24:30,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:30,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-07-29 01:24:30,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-07-29 01:24:30,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:30,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:30,963 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:30,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:30,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:30,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:30,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:30,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-29 01:24:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:24:30,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:30,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:24:30,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash 30702701, now seen corresponding path program 1 times [2020-07-29 01:24:31,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:31,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574126970] [2020-07-29 01:24:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:31,227 INFO L280 TraceCheckUtils]: 0: Hoare triple {33#true} havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~ret3, main_~a~0, main_~b~0, main_~result~0;assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~a~0 := main_#t~nondet1;havoc main_#t~nondet1;assume -2147483648 <= main_#t~nondet2 && main_#t~nondet2 <= 2147483647;main_~b~0 := main_#t~nondet2;havoc main_#t~nondet2; {35#(<= ULTIMATE.start_main_~b~0 2147483647)} is VALID [2020-07-29 01:24:31,229 INFO L263 TraceCheckUtils]: 1: Hoare triple {35#(<= ULTIMATE.start_main_~b~0 2147483647)} call main_#t~ret3 := sum(main_~a~0, main_~b~0); {36#(<= |sum_#in~m| 2147483647)} is VALID [2020-07-29 01:24:31,230 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#(<= |sum_#in~m| 2147483647)} ~n := #in~n;~m := #in~m; {37#(<= sum_~m 2147483647)} is VALID [2020-07-29 01:24:31,232 INFO L280 TraceCheckUtils]: 3: Hoare triple {37#(<= sum_~m 2147483647)} assume ~n <= 0; {38#(<= (+ sum_~n sum_~m) 2147483647)} is VALID [2020-07-29 01:24:31,233 INFO L280 TraceCheckUtils]: 4: Hoare triple {38#(<= (+ sum_~n sum_~m) 2147483647)} assume !(~m + ~n <= 2147483647); {34#false} is VALID [2020-07-29 01:24:31,235 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 01:24:31,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574126970] [2020-07-29 01:24:31,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:31,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 01:24:31,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539317921] [2020-07-29 01:24:31,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-07-29 01:24:31,247 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:31,251 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-29 01:24:31,269 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:31,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-29 01:24:31,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-29 01:24:31,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-29 01:24:31,283 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-07-29 01:24:31,481 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-29 01:24:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:31,956 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-07-29 01:24:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-29 01:24:31,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-07-29 01:24:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-29 01:24:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 58 transitions. [2020-07-29 01:24:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-29 01:24:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 58 transitions. [2020-07-29 01:24:31,976 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 58 transitions. [2020-07-29 01:24:32,061 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:32,076 INFO L225 Difference]: With dead ends: 55 [2020-07-29 01:24:32,077 INFO L226 Difference]: Without dead ends: 46 [2020-07-29 01:24:32,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-29 01:24:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-29 01:24:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-07-29 01:24:32,131 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:32,132 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand 37 states. [2020-07-29 01:24:32,132 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 37 states. [2020-07-29 01:24:32,133 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 37 states. [2020-07-29 01:24:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:32,142 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-07-29 01:24:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-07-29 01:24:32,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:32,144 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:32,144 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 46 states. [2020-07-29 01:24:32,145 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 46 states. [2020-07-29 01:24:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:32,152 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-07-29 01:24:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-07-29 01:24:32,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:32,154 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:32,154 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:32,154 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-29 01:24:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-07-29 01:24:32,161 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2020-07-29 01:24:32,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:32,161 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-07-29 01:24:32,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-29 01:24:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-07-29 01:24:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:24:32,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:32,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:24:32,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:24:32,164 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash 30702861, now seen corresponding path program 1 times [2020-07-29 01:24:32,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:32,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133863708] [2020-07-29 01:24:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:32,225 INFO L280 TraceCheckUtils]: 0: Hoare triple {239#true} havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~ret3, main_~a~0, main_~b~0, main_~result~0;assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~a~0 := main_#t~nondet1;havoc main_#t~nondet1;assume -2147483648 <= main_#t~nondet2 && main_#t~nondet2 <= 2147483647;main_~b~0 := main_#t~nondet2;havoc main_#t~nondet2; {241#(<= ULTIMATE.start_main_~a~0 2147483647)} is VALID [2020-07-29 01:24:32,227 INFO L263 TraceCheckUtils]: 1: Hoare triple {241#(<= ULTIMATE.start_main_~a~0 2147483647)} call main_#t~ret3 := sum(main_~a~0, main_~b~0); {242#(<= |sum_#in~n| 2147483647)} is VALID [2020-07-29 01:24:32,228 INFO L280 TraceCheckUtils]: 2: Hoare triple {242#(<= |sum_#in~n| 2147483647)} ~n := #in~n;~m := #in~m; {243#(<= sum_~n 2147483647)} is VALID [2020-07-29 01:24:32,229 INFO L280 TraceCheckUtils]: 3: Hoare triple {243#(<= sum_~n 2147483647)} assume !(~n <= 0); {243#(<= sum_~n 2147483647)} is VALID [2020-07-29 01:24:32,231 INFO L280 TraceCheckUtils]: 4: Hoare triple {243#(<= sum_~n 2147483647)} assume !(~n - 1 <= 2147483647); {240#false} is VALID [2020-07-29 01:24:32,231 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 01:24:32,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133863708] [2020-07-29 01:24:32,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:32,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 01:24:32,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704888065] [2020-07-29 01:24:32,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-29 01:24:32,235 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:32,235 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 01:24:32,247 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:32,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-29 01:24:32,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:32,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 01:24:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:32,249 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2020-07-29 01:24:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:32,427 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-07-29 01:24:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 01:24:32,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-29 01:24:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2020-07-29 01:24:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2020-07-29 01:24:32,442 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 26 transitions. [2020-07-29 01:24:32,484 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:32,489 INFO L225 Difference]: With dead ends: 37 [2020-07-29 01:24:32,489 INFO L226 Difference]: Without dead ends: 36 [2020-07-29 01:24:32,490 INFO L675 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 [2020-07-29 01:24:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-29 01:24:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-29 01:24:32,517 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:32,517 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand 36 states. [2020-07-29 01:24:32,518 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 36 states. [2020-07-29 01:24:32,518 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 36 states. [2020-07-29 01:24:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:32,527 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-07-29 01:24:32,527 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-07-29 01:24:32,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:32,529 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:32,529 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 36 states. [2020-07-29 01:24:32,530 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 36 states. [2020-07-29 01:24:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:32,541 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-07-29 01:24:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-07-29 01:24:32,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:32,545 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:32,545 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:32,545 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-29 01:24:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-07-29 01:24:32,558 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 5 [2020-07-29 01:24:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:32,559 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-07-29 01:24:32,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-29 01:24:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-07-29 01:24:32,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-29 01:24:32,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:32,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-29 01:24:32,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:24:32,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:32,562 INFO L82 PathProgramCache]: Analyzing trace with hash 951783786, now seen corresponding path program 1 times [2020-07-29 01:24:32,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:32,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114202759] [2020-07-29 01:24:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:24:32,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:24:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:24:32,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:24:32,630 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:24:32,630 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:24:32,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-29 01:24:32,644 FATAL L488 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret3 := sum(~a~0, ~b~0); [2020-07-29 01:24:32,646 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 01:24:32,653 INFO L168 Benchmark]: Toolchain (without parser) took 2648.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 958.9 MB in the beginning and 966.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 128.0 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:32,655 INFO L168 Benchmark]: CDTParser took 0.24 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 01:24:32,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.43 ms. Allocated memory is still 1.0 GB. Free memory was 958.9 MB in the beginning and 946.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:32,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:32,659 INFO L168 Benchmark]: Boogie Preprocessor took 77.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:32,660 INFO L168 Benchmark]: RCFGBuilder took 524.00 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:32,662 INFO L168 Benchmark]: TraceAbstraction took 1755.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.7 MB in the end (delta: 139.7 MB). Peak memory consumption was 139.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:32,675 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 0.24 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 244.43 ms. Allocated memory is still 1.0 GB. Free memory was 958.9 MB in the beginning and 946.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 524.00 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1755.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.7 MB in the end (delta: 139.7 MB). Peak memory consumption was 139.7 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...