/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:10:41,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:10:41,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:10:41,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:10:41,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:10:41,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:10:41,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:10:41,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:10:41,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:10:41,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:10:41,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:10:41,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:10:41,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:10:41,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:10:41,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:10:41,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:10:41,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:10:41,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:10:41,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:10:41,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:10:41,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:10:41,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:10:41,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:10:41,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:10:41,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:10:41,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:10:41,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:10:41,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:10:41,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:10:41,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:10:41,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:10:41,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:10:41,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:10:41,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:10:41,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:10:41,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:10:41,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:10:41,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:10:41,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:10:41,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:10:41,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:10:41,673 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:10:41,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:10:41,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:10:41,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:10:41,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:10:41,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:10:41,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:10:41,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:10:41,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:10:41,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:10:41,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:10:41,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:10:41,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:10:41,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:10:41,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:10:41,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:10:41,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:10:41,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:10:41,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:10:41,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:10:41,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:10:41,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:10:41,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:10:41,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:10:41,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:10:41,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:10:42,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:10:42,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:10:42,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:10:42,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:10:42,029 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:10:42,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-08-21 22:10:42,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4327ac690/53e60abbb71c416ca279c21d5c2313c5/FLAG281296324 [2020-08-21 22:10:42,584 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:10:42,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-08-21 22:10:42,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4327ac690/53e60abbb71c416ca279c21d5c2313c5/FLAG281296324 [2020-08-21 22:10:42,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4327ac690/53e60abbb71c416ca279c21d5c2313c5 [2020-08-21 22:10:42,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:10:42,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:10:42,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:10:42,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:10:42,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:10:42,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:10:42" (1/1) ... [2020-08-21 22:10:42,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a27dd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:42, skipping insertion in model container [2020-08-21 22:10:42,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:10:42" (1/1) ... [2020-08-21 22:10:42,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:10:43,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:10:43,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:10:43,218 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:10:43,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:10:43,242 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:10:43,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43 WrapperNode [2020-08-21 22:10:43,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:10:43,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:10:43,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:10:43,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:10:43,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... [2020-08-21 22:10:43,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:10:43,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:10:43,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:10:43,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:10:43,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 22:10:43,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:10:43,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:10:43,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-08-21 22:10:43,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:10:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 22:10:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:10:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-08-21 22:10:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:10:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:10:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:10:43,558 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:10:43,558 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 22:10:43,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:10:43 BoogieIcfgContainer [2020-08-21 22:10:43,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:10:43,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:10:43,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:10:43,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:10:43,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:10:42" (1/3) ... [2020-08-21 22:10:43,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe2f06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:10:43, skipping insertion in model container [2020-08-21 22:10:43,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:10:43" (2/3) ... [2020-08-21 22:10:43,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe2f06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:10:43, skipping insertion in model container [2020-08-21 22:10:43,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:10:43" (3/3) ... [2020-08-21 22:10:43,571 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-08-21 22:10:43,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:10:43,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:10:43,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:10:43,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:10:43,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:10:43,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:10:43,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:10:43,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:10:43,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:10:43,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:10:43,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:10:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-21 22:10:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 22:10:43,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:43,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:43,650 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-08-21 22:10:43,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:43,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000570181] [2020-08-21 22:10:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:10:43,754 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:10:43,755 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:10:43,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:10:43,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:10:43 BoogieIcfgContainer [2020-08-21 22:10:43,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:10:43,776 INFO L168 Benchmark]: Toolchain (without parser) took 806.13 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 101.3 MB in the beginning and 154.9 MB in the end (delta: -53.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:43,778 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 22:10:43,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.02 ms. Allocated memory is still 139.5 MB. Free memory was 100.9 MB in the beginning and 91.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:43,780 INFO L168 Benchmark]: Boogie Preprocessor took 102.59 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 91.9 MB in the beginning and 178.7 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:43,782 INFO L168 Benchmark]: RCFGBuilder took 216.34 ms. Allocated memory is still 199.8 MB. Free memory was 178.7 MB in the beginning and 167.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:43,783 INFO L168 Benchmark]: TraceAbstraction took 208.77 ms. Allocated memory is still 199.8 MB. Free memory was 166.4 MB in the beginning and 154.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:43,789 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.02 ms. Allocated memory is still 139.5 MB. Free memory was 100.9 MB in the beginning and 91.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.59 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 91.9 MB in the beginning and 178.7 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 216.34 ms. Allocated memory is still 199.8 MB. Free memory was 178.7 MB in the beginning and 167.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208.77 ms. Allocated memory is still 199.8 MB. Free memory was 166.4 MB in the beginning and 154.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int a = __VERIFIER_nondet_uint(); [L14] unsigned int b = __VERIFIER_nondet_uint(); [L15] CALL, EXPR sum(a, b) [L5] COND TRUE n == 0 [L6] return m; [L15] RET, EXPR sum(a, b) [L15] unsigned int result = sum(a, b); [L16] COND TRUE result == a + b [L17] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...