/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-19 04:23:08,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:08,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:08,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:08,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:08,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:08,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:08,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:08,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:08,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:08,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:08,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:08,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:08,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:08,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:08,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:08,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:08,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:08,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:08,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:08,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:08,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:08,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:08,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:08,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:23:08,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:23:08,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:23:08,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:23:08,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:23:08,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:23:08,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:23:08,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:23:08,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:23:08,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:23:08,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:23:08,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:23:08,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:23:08,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:23:08,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:08,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:08,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:08,945 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 [2020-08-19 04:23:08,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:08,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:08,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:08,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:08,969 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:08,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:08,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:08,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:08,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:08,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:08,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:08,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:08,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:08,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:08,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:08,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:08,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:08,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:08,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:08,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:08,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:08,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:08,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:08,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:08,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:08,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:08,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:08,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:08,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:08,975 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:09,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:09,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:09,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:09,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:09,310 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:09,311 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-08-19 04:23:09,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9c8bda20/76e8584b499b47fd9a0739aa8d8f2bc9/FLAGf2b0ad683 [2020-08-19 04:23:09,914 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:09,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-08-19 04:23:09,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9c8bda20/76e8584b499b47fd9a0739aa8d8f2bc9/FLAGf2b0ad683 [2020-08-19 04:23:10,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9c8bda20/76e8584b499b47fd9a0739aa8d8f2bc9 [2020-08-19 04:23:10,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:10,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:10,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:10,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:10,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:10,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10, skipping insertion in model container [2020-08-19 04:23:10,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:10,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:10,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:10,475 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:10,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:10,504 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:10,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10 WrapperNode [2020-08-19 04:23:10,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:10,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:10,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:10,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:10,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (1/1) ... [2020-08-19 04:23:10,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:10,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:10,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:10,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:10,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (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 [2020-08-19 04:23:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-08-19 04:23:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 04:23:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-08-19 04:23:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:10,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:10,847 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 04:23:10,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:10 BoogieIcfgContainer [2020-08-19 04:23:10,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:10,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:10,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:10,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:10,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:10" (1/3) ... [2020-08-19 04:23:10,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1b5bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:10, skipping insertion in model container [2020-08-19 04:23:10,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:10" (2/3) ... [2020-08-19 04:23:10,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1b5bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:10, skipping insertion in model container [2020-08-19 04:23:10,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:10" (3/3) ... [2020-08-19 04:23:10,859 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-08-19 04:23:10,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:10,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:10,889 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:10,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:10,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:10,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:10,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:10,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:10,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:10,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:10,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 04:23:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 04:23:10,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:10,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:10,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:10,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-08-19 04:23:10,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:10,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134316711] [2020-08-19 04:23:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:23:11,054 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:23:11,055 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:23:11,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:11,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:23:11 BoogieIcfgContainer [2020-08-19 04:23:11,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:23:11,078 INFO L168 Benchmark]: Toolchain (without parser) took 811.22 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 157.5 MB in the end (delta: -55.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:11,079 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:23:11,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.57 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:11,081 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 138.9 MB. Free memory was 92.3 MB in the beginning and 91.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:11,082 INFO L168 Benchmark]: RCFGBuilder took 318.06 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 169.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:11,083 INFO L168 Benchmark]: TraceAbstraction took 222.53 ms. Allocated memory is still 201.3 MB. Free memory was 169.2 MB in the beginning and 157.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:11,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.57 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.54 ms. Allocated memory is still 138.9 MB. Free memory was 92.3 MB in the beginning and 91.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.06 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 169.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222.53 ms. Allocated memory is still 201.3 MB. Free memory was 169.2 MB in the beginning and 157.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 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...