/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:12:01,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:12:01,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:12:01,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:12:01,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:12:01,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:12:01,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:12:01,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:12:01,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:12:01,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:12:01,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:12:01,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:12:01,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:12:01,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:12:01,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:12:01,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:12:01,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:12:01,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:12:01,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:12:01,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:12:01,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:12:01,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:12:01,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:12:01,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:12:01,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:12:01,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:12:01,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:12:01,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:12:01,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:12:01,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:12:01,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:12:01,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:12:01,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:12:01,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:12:01,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:12:01,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:12:01,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:12:01,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:12:01,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:12:01,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:12:01,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:12:01,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:12:01,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:12:01,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:12:01,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:12:01,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:12:01,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:12:01,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:12:01,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:12:01,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:12:01,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:12:01,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:12:01,684 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:12:01,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:12:01,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:12:01,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:12:01,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:12:01,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:12:01,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:12:01,687 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 22:12:01,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:12:02,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:12:02,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:12:02,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:12:02,007 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:12:02,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-08-22 22:12:02,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/321614e55/a2536257e904496398f4a515bdc6587f/FLAG5b91e8a89 [2020-08-22 22:12:02,567 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:12:02,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-08-22 22:12:02,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/321614e55/a2536257e904496398f4a515bdc6587f/FLAG5b91e8a89 [2020-08-22 22:12:02,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/321614e55/a2536257e904496398f4a515bdc6587f [2020-08-22 22:12:02,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:12:02,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:12:02,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:12:02,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:12:02,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:12:02,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:12:02" (1/1) ... [2020-08-22 22:12:02,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6663bc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:02, skipping insertion in model container [2020-08-22 22:12:02,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:12:02" (1/1) ... [2020-08-22 22:12:02,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:12:02,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:12:03,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:12:03,143 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:12:03,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:12:03,175 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:12:03,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03 WrapperNode [2020-08-22 22:12:03,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:12:03,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:12:03,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:12:03,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:12:03,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (1/1) ... [2020-08-22 22:12:03,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:12:03,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:12:03,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:12:03,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:12:03,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (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 [2020-08-22 22:12:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:12:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:12:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-08-22 22:12:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-08-22 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:12:03,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:12:03,551 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:12:03,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:12:03 BoogieIcfgContainer [2020-08-22 22:12:03,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:12:03,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:12:03,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:12:03,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:12:03,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:12:02" (1/3) ... [2020-08-22 22:12:03,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245529b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:12:03, skipping insertion in model container [2020-08-22 22:12:03,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:12:03" (2/3) ... [2020-08-22 22:12:03,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245529b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:12:03, skipping insertion in model container [2020-08-22 22:12:03,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:12:03" (3/3) ... [2020-08-22 22:12:03,564 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-08-22 22:12:03,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:12:03,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:12:03,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:12:03,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:12:03,632 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:12:03,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:12:03,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:12:03,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:12:03,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:12:03,633 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:12:03,633 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:12:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-22 22:12:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 22:12:03,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:03,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:03,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:03,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1061236160, now seen corresponding path program 1 times [2020-08-22 22:12:03,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:03,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139136218] [2020-08-22 22:12:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:12:03,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:12:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:12:03,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:12:03,868 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:12:03,869 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:12:03,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:12:03,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:12:03 BoogieIcfgContainer [2020-08-22 22:12:03,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:12:03,899 INFO L168 Benchmark]: Toolchain (without parser) took 981.11 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 156.4 MB in the end (delta: -53.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:12:03,900 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 22:12:03,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.28 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 93.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:12:03,902 INFO L168 Benchmark]: Boogie Preprocessor took 122.24 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.5 MB in the beginning and 181.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:12:03,902 INFO L168 Benchmark]: RCFGBuilder took 255.63 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 169.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:12:03,903 INFO L168 Benchmark]: TraceAbstraction took 339.30 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 156.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:12:03,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.28 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 93.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.24 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.5 MB in the beginning and 181.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.63 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 169.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 339.30 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 156.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 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(); VAL [__VERIFIER_nondet_uint()=0, a=0] [L14] unsigned int b = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=0, a=0, b=0] [L15] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L5] COND TRUE n == 0 VAL [\old(m)=0, \old(n)=0, m=0, 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); VAL [a=0, b=0, result=0, sum(a, b)=0] [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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=27occurred 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, 19 NumberOfCodeBlocks, 19 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...