/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 false -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-eb0fd7c [2020-09-21 10:20:04,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:20:04,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:20:04,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:20:04,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:20:04,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:20:04,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:20:04,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:20:04,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:20:04,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:20:04,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:20:04,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:20:04,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:20:04,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:20:04,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:20:04,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:20:04,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:20:04,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:20:04,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:20:04,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:20:04,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:20:04,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:20:04,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:20:04,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:20:04,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:20:04,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:20:04,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:20:04,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:20:04,905 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 [2020-09-21 10:20:04,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:20:04,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:20:04,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:20:04,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:20:04,948 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:20:04,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:20:04,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:20:04,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:20:04,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:20:04,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:20:04,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:20:04,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:20:04,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:20:04,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:20:04,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:20:04,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:20:04,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:20:04,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:20:04,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:20:04,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:20:04,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:20:04,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:20:04,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:20:04,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:20:04,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:20:04,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:20:04,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:20:04,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:20:04,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:20:04,955 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 -> false [2020-09-21 10:20:05,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:20:05,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:20:05,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:20:05,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:20:05,474 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:20:05,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-09-21 10:20:05,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9a791869/43faa9cfdd9d42179b91d45cdf841004/FLAG9ba617073 [2020-09-21 10:20:06,094 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:20:06,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-09-21 10:20:06,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9a791869/43faa9cfdd9d42179b91d45cdf841004/FLAG9ba617073 [2020-09-21 10:20:06,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9a791869/43faa9cfdd9d42179b91d45cdf841004 [2020-09-21 10:20:06,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:20:06,475 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:20:06,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:06,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:20:06,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:20:06,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b8ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06, skipping insertion in model container [2020-09-21 10:20:06,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:20:06,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:20:06,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:06,788 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:20:06,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:06,821 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:20:06,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06 WrapperNode [2020-09-21 10:20:06,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:06,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:20:06,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:20:06,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:20:06,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (1/1) ... [2020-09-21 10:20:06,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:20:06,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:20:06,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:20:06,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:20:06,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (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 [2020-09-21 10:20:07,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:20:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:20:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-21 10:20:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:20:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 10:20:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:20:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-21 10:20:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:20:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:20:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:20:07,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:20:07,207 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:20:07,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:07 BoogieIcfgContainer [2020-09-21 10:20:07,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:20:07,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:20:07,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:20:07,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:20:07,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:20:06" (1/3) ... [2020-09-21 10:20:07,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44267732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:07, skipping insertion in model container [2020-09-21 10:20:07,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:06" (2/3) ... [2020-09-21 10:20:07,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44267732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:07, skipping insertion in model container [2020-09-21 10:20:07,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:07" (3/3) ... [2020-09-21 10:20:07,238 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-09-21 10:20:07,267 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:20:07,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:20:07,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:20:07,389 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:20:07,390 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:20:07,390 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:20:07,390 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:20:07,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:20:07,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:20:07,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:20:07,391 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:20:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-21 10:20:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 10:20:07,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:07,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:20:07,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:07,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-09-21 10:20:07,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:07,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641892968] [2020-09-21 10:20:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:20:07,552 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:20:07,553 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:20:07,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:20:07,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:20:07 BoogieIcfgContainer [2020-09-21 10:20:07,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:20:07,581 INFO L168 Benchmark]: Toolchain (without parser) took 1110.83 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 100.2 MB in the beginning and 155.7 MB in the end (delta: -55.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:07,582 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:20:07,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.08 ms. Allocated memory is still 136.8 MB. Free memory was 99.6 MB in the beginning and 90.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:07,584 INFO L168 Benchmark]: Boogie Preprocessor took 30.71 ms. Allocated memory is still 136.8 MB. Free memory was 90.3 MB in the beginning and 88.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:07,585 INFO L168 Benchmark]: RCFGBuilder took 361.53 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 88.9 MB in the beginning and 167.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:07,586 INFO L168 Benchmark]: TraceAbstraction took 357.22 ms. Allocated memory is still 199.2 MB. Free memory was 166.5 MB in the beginning and 155.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:07,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.08 ms. Allocated memory is still 136.8 MB. Free memory was 99.6 MB in the beginning and 90.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.71 ms. Allocated memory is still 136.8 MB. Free memory was 90.3 MB in the beginning and 88.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.53 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 88.9 MB in the beginning and 167.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 357.22 ms. Allocated memory is still 199.2 MB. Free memory was 166.5 MB in the beginning and 155.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 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...