/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 05:45:00,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:45:00,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:45:00,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 05:45:00,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:45:00,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:45:00,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:45:00,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:45:00,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:45:00,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:45:00,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:45:00,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:45:00,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:45:00,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:45:00,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:45:00,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:45:00,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:45:00,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:45:00,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:45:00,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:45:00,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 05:45:00,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:45:00,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:45:00,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:45:00,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:45:00,332 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:45:00,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:45:00,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:45:00,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:45:00,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:45:00,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:45:00,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:45:00,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:45:00,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:45:00,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:45:00,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:45:00,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:45:00,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:45:00,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:45:00,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:45:00,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:45:00,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:45:00,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:45:00,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:45:00,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:45:00,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:45:00,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:45:00,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:45:00,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:45:00,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:45:00,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:45:00,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:45:00,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:45:00,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:45:00,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:45:00,683 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:45:00,684 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-07-20 05:45:00,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86a2baaa/3a976076f63c444aa9c10e2581809c04/FLAG0ad1a111d [2020-07-20 05:45:01,225 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:45:01,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-07-20 05:45:01,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86a2baaa/3a976076f63c444aa9c10e2581809c04/FLAG0ad1a111d [2020-07-20 05:45:01,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86a2baaa/3a976076f63c444aa9c10e2581809c04 [2020-07-20 05:45:01,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:45:01,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:45:01,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:45:01,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:45:01,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:45:01,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79052151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01, skipping insertion in model container [2020-07-20 05:45:01,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:45:01,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:45:01,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:45:01,892 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:45:01,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:45:01,925 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:45:01,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01 WrapperNode [2020-07-20 05:45:01,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:45:01,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:45:01,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:45:01,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:45:01,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (1/1) ... [2020-07-20 05:45:01,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:45:01,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:45:01,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:45:01,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:45:01,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (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 [2020-07-20 05:45:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:45:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:45:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-20 05:45:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:45:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 05:45:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:45:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-20 05:45:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:45:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:45:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:45:02,331 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:45:02,332 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:45:02,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:45:02 BoogieIcfgContainer [2020-07-20 05:45:02,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:45:02,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:45:02,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:45:02,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:45:02,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:45:01" (1/3) ... [2020-07-20 05:45:02,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429e524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:45:02, skipping insertion in model container [2020-07-20 05:45:02,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:01" (2/3) ... [2020-07-20 05:45:02,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429e524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:45:02, skipping insertion in model container [2020-07-20 05:45:02,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:45:02" (3/3) ... [2020-07-20 05:45:02,347 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-07-20 05:45:02,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:45:02,373 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:45:02,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:45:02,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:45:02,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:45:02,419 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:45:02,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:45:02,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:45:02,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:45:02,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:45:02,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:45:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 05:45:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 05:45:02,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:02,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:02,447 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:02,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-07-20 05:45:02,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:02,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185575294] [2020-07-20 05:45:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c5cf88c [2020-07-20 05:45:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:45:02,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:45:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:45:02,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:45:02,582 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:45:02,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:45:02,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:45:02,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:45:02 BoogieIcfgContainer [2020-07-20 05:45:02,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:45:02,609 INFO L168 Benchmark]: Toolchain (without parser) took 976.65 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 155.9 MB in the end (delta: -55.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:02,611 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 05:45:02,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.20 ms. Allocated memory is still 136.8 MB. Free memory was 99.6 MB in the beginning and 90.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:02,613 INFO L168 Benchmark]: Boogie Preprocessor took 31.80 ms. Allocated memory is still 136.8 MB. Free memory was 90.0 MB in the beginning and 88.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:02,614 INFO L168 Benchmark]: RCFGBuilder took 377.88 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 88.6 MB in the beginning and 169.2 MB in the end (delta: -80.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:02,616 INFO L168 Benchmark]: TraceAbstraction took 267.96 ms. Allocated memory is still 200.8 MB. Free memory was 168.5 MB in the beginning and 155.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:02,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.20 ms. Allocated memory is still 136.8 MB. Free memory was 99.6 MB in the beginning and 90.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.80 ms. Allocated memory is still 136.8 MB. Free memory was 90.0 MB in the beginning and 88.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.88 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 88.6 MB in the beginning and 169.2 MB in the end (delta: -80.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267.96 ms. Allocated memory is still 200.8 MB. Free memory was 168.5 MB in the beginning and 155.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 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) VAL [\old(m)=0, \old(n)=0] [L5] COND TRUE n == 0 [L6] return m; VAL [\old(m)=0, \old(n)=0, \result=0, m=0, n=0] [L15] RET, EXPR sum(a, b) VAL [a=0, b=0, sum(a, b)=0] [L15] unsigned int result = sum(a, b); [L16] COND TRUE result == a + b VAL [a=0, b=0, result=0] [L17] __VERIFIER_error() VAL [a=0, b=0, result=0] - 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...