/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:14:34,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:14:34,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:14:34,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:14:34,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:14:34,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:14:34,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:14:34,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:14:34,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:14:34,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:14:34,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:14:34,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:14:34,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:14:34,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:14:34,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:14:34,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:14:34,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:14:34,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:14:34,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:14:34,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:14:34,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:14:34,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:14:34,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:14:34,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:14:34,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 00:14:34,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 00:14:34,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 00:14:34,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 00:14:34,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 00:14:34,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 00:14:34,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 00:14:34,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 00:14:34,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 00:14:34,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 00:14:34,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 00:14:34,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 00:14:34,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 00:14:34,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 00:14:34,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:14:34,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:14:34,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:14:34,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:14:34,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:14:34,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:14:34,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:14:34,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:14:34,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:14:34,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:14:34,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:14:34,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:14:34,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:14:34,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:14:34,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:14:34,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:14:34,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:14:34,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:14:34,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:14:34,347 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:14:34,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:14:34,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:14:34,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:14:34,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:14:34,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:14:34,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:14:34,348 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:14:34,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:14:34,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:14:34,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:14:34,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:14:34,647 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:14:34,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-07-18 00:14:34,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fabff79d/507d43c5b45c41fcbab97cc8a8ff7757/FLAG946e1db25 [2020-07-18 00:14:35,186 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:14:35,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-07-18 00:14:35,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fabff79d/507d43c5b45c41fcbab97cc8a8ff7757/FLAG946e1db25 [2020-07-18 00:14:35,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fabff79d/507d43c5b45c41fcbab97cc8a8ff7757 [2020-07-18 00:14:35,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:14:35,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:14:35,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:35,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:14:35,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:14:35,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe47bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35, skipping insertion in model container [2020-07-18 00:14:35,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:14:35,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:14:35,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:35,849 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:14:35,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:35,879 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:14:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35 WrapperNode [2020-07-18 00:14:35,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:35,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:14:35,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:14:35,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:14:35,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (1/1) ... [2020-07-18 00:14:35,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:14:35,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:14:35,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:14:35,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:14:35,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (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 [2020-07-18 00:14:36,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:14:36,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:14:36,051 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-18 00:14:36,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:14:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:14:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-18 00:14:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:14:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:14:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:14:36,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:14:36,283 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:14:36,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:36 BoogieIcfgContainer [2020-07-18 00:14:36,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:14:36,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:14:36,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:14:36,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:14:36,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:14:35" (1/3) ... [2020-07-18 00:14:36,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0bad39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:36, skipping insertion in model container [2020-07-18 00:14:36,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:35" (2/3) ... [2020-07-18 00:14:36,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0bad39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:36, skipping insertion in model container [2020-07-18 00:14:36,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:36" (3/3) ... [2020-07-18 00:14:36,295 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2020-07-18 00:14:36,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:14:36,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:14:36,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:14:36,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:14:36,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:14:36,397 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:14:36,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:14:36,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:14:36,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:14:36,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:14:36,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:14:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-18 00:14:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-18 00:14:36,436 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:14:36,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:14:36,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:14:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:14:36,444 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-07-18 00:14:36,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:14:36,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916892407] [2020-07-18 00:14:36,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:14:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:36,654 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} assume true; {30#true} is VALID [2020-07-18 00:14:36,654 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {30#true} {30#true} #33#return; {30#true} is VALID [2020-07-18 00:14:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:36,712 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} ~n := #in~n; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-18 00:14:36,713 INFO L280 TraceCheckUtils]: 1: Hoare triple {41#(= sum_~n |sum_#in~n|)} ~m := #in~m; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-18 00:14:36,714 INFO L280 TraceCheckUtils]: 2: Hoare triple {41#(= sum_~n |sum_#in~n|)} assume ~n <= 0; {42#(<= |sum_#in~n| 0)} is VALID [2020-07-18 00:14:36,715 INFO L280 TraceCheckUtils]: 3: Hoare triple {42#(<= |sum_#in~n| 0)} #res := ~m + ~n; {42#(<= |sum_#in~n| 0)} is VALID [2020-07-18 00:14:36,717 INFO L280 TraceCheckUtils]: 4: Hoare triple {42#(<= |sum_#in~n| 0)} assume true; {42#(<= |sum_#in~n| 0)} is VALID [2020-07-18 00:14:36,720 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {42#(<= |sum_#in~n| 0)} {34#(<= 20 main_~a~0)} #39#return; {31#false} is VALID [2020-07-18 00:14:36,721 INFO L263 TraceCheckUtils]: 0: Hoare triple {30#true} call ULTIMATE.init(); {30#true} is VALID [2020-07-18 00:14:36,721 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} assume true; {30#true} is VALID [2020-07-18 00:14:36,721 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {30#true} {30#true} #33#return; {30#true} is VALID [2020-07-18 00:14:36,722 INFO L263 TraceCheckUtils]: 3: Hoare triple {30#true} call #t~ret2 := main(); {30#true} is VALID [2020-07-18 00:14:36,723 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#true} ~a~0 := 20; {34#(<= 20 main_~a~0)} is VALID [2020-07-18 00:14:36,725 INFO L280 TraceCheckUtils]: 5: Hoare triple {34#(<= 20 main_~a~0)} ~b~0 := 0; {34#(<= 20 main_~a~0)} is VALID [2020-07-18 00:14:36,726 INFO L263 TraceCheckUtils]: 6: Hoare triple {34#(<= 20 main_~a~0)} call #t~ret1 := sum(~a~0, ~b~0); {30#true} is VALID [2020-07-18 00:14:36,727 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#true} ~n := #in~n; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-18 00:14:36,729 INFO L280 TraceCheckUtils]: 8: Hoare triple {41#(= sum_~n |sum_#in~n|)} ~m := #in~m; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-18 00:14:36,731 INFO L280 TraceCheckUtils]: 9: Hoare triple {41#(= sum_~n |sum_#in~n|)} assume ~n <= 0; {42#(<= |sum_#in~n| 0)} is VALID [2020-07-18 00:14:36,733 INFO L280 TraceCheckUtils]: 10: Hoare triple {42#(<= |sum_#in~n| 0)} #res := ~m + ~n; {42#(<= |sum_#in~n| 0)} is VALID [2020-07-18 00:14:36,736 INFO L280 TraceCheckUtils]: 11: Hoare triple {42#(<= |sum_#in~n| 0)} assume true; {42#(<= |sum_#in~n| 0)} is VALID [2020-07-18 00:14:36,738 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {42#(<= |sum_#in~n| 0)} {34#(<= 20 main_~a~0)} #39#return; {31#false} is VALID [2020-07-18 00:14:36,739 INFO L280 TraceCheckUtils]: 13: Hoare triple {31#false} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {31#false} is VALID [2020-07-18 00:14:36,739 INFO L280 TraceCheckUtils]: 14: Hoare triple {31#false} ~result~0 := #t~ret1; {31#false} is VALID [2020-07-18 00:14:36,739 INFO L280 TraceCheckUtils]: 15: Hoare triple {31#false} havoc #t~ret1; {31#false} is VALID [2020-07-18 00:14:36,740 INFO L280 TraceCheckUtils]: 16: Hoare triple {31#false} assume ~result~0 != ~a~0 + ~b~0; {31#false} is VALID [2020-07-18 00:14:36,740 INFO L280 TraceCheckUtils]: 17: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-18 00:14:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:14:36,882 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:14:36,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916892407] [2020-07-18 00:14:36,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:14:36,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 00:14:36,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622870302] [2020-07-18 00:14:36,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-07-18 00:14:36,897 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:14:36,901 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 00:14:36,938 WARN L140 InductivityCheck]: Transition 46#(and (not (= (+ main_~a~0 main_~b~0) main_~result~0)) (<= main_~result~0 2147483647) (<= |sum_#in~n| 0) (<= 0 (+ main_~result~0 2147483648))) ( _ , assume !false; , 31#false ) not inductive [2020-07-18 00:14:36,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:14:36,940 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inductivity failed at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.checkInductivity(InductivityCheck.java:103) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.(InductivityCheck.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.constructInterpolantAutomaton(BasicCegarLoop.java:583) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:455) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:14:36,946 INFO L168 Benchmark]: Toolchain (without parser) took 1321.63 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 101.0 MB in the beginning and 119.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:36,947 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:14:36,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.90 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 91.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:36,949 INFO L168 Benchmark]: Boogie Preprocessor took 22.50 ms. Allocated memory is still 138.4 MB. Free memory was 91.2 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:36,950 INFO L168 Benchmark]: RCFGBuilder took 383.73 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 89.9 MB in the beginning and 163.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:36,951 INFO L168 Benchmark]: TraceAbstraction took 653.86 ms. Allocated memory is still 200.3 MB. Free memory was 163.7 MB in the beginning and 120.6 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:36,955 INFO L336 ainManager$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 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.90 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 91.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.50 ms. Allocated memory is still 138.4 MB. Free memory was 91.2 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.73 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 89.9 MB in the beginning and 163.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 653.86 ms. Allocated memory is still 200.3 MB. Free memory was 163.7 MB in the beginning and 120.6 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inductivity failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inductivity failed: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...