/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-b8ad66e [2020-10-24 00:57:11,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:57:11,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:57:11,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:57:11,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:57:11,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:57:11,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:57:11,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:57:11,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:57:11,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:57:11,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:57:11,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:57:11,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:57:11,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:57:11,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:57:11,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:57:11,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:57:11,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:57:11,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:57:11,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:57:11,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:57:11,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:57:11,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:57:11,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:57:11,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:57:11,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:57:11,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:57:11,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:57:11,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:57:11,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:57:11,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:57:11,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:57:11,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:57:11,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:57:11,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:57:11,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:57:11,929 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:57:11,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:57:11,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:57:11,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:57:11,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:57:11,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:57:11,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:57:11,930 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:57:12,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:57:12,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:57:12,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:57:12,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:57:12,347 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:57:12,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-10-24 00:57:12,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08df59bd9/707aa4627f914590bc582e4c5f6ba02e/FLAGd0c656493 [2020-10-24 00:57:13,014 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:57:13,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-10-24 00:57:13,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08df59bd9/707aa4627f914590bc582e4c5f6ba02e/FLAGd0c656493 [2020-10-24 00:57:13,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08df59bd9/707aa4627f914590bc582e4c5f6ba02e [2020-10-24 00:57:13,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:57:13,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:57:13,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:57:13,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:57:13,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:57:13,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8bd7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13, skipping insertion in model container [2020-10-24 00:57:13,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:57:13,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:57:13,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:57:13,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:57:13,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:57:13,734 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:57:13,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13 WrapperNode [2020-10-24 00:57:13,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:57:13,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:57:13,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:57:13,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:57:13,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (1/1) ... [2020-10-24 00:57:13,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:57:13,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:57:13,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:57:13,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:57:13,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (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 [2020-10-24 00:57:13,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:57:13,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:57:13,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:57:13,867 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-24 00:57:13,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:57:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-24 00:57:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:57:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:57:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:57:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:57:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-24 00:57:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:57:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:57:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:57:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:57:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:57:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:57:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:57:14,182 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:57:14,183 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:57:14,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:57:14 BoogieIcfgContainer [2020-10-24 00:57:14,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:57:14,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:57:14,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:57:14,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:57:14,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:57:13" (1/3) ... [2020-10-24 00:57:14,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133c4fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:57:14, skipping insertion in model container [2020-10-24 00:57:14,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:13" (2/3) ... [2020-10-24 00:57:14,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133c4fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:57:14, skipping insertion in model container [2020-10-24 00:57:14,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:57:14" (3/3) ... [2020-10-24 00:57:14,197 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-10-24 00:57:14,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:57:14,233 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:57:14,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:57:14,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:57:14,324 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:57:14,324 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:57:14,324 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:57:14,325 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:57:14,325 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:57:14,325 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:57:14,325 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:57:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-24 00:57:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 00:57:14,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:14,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:14,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:14,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:14,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1017164755, now seen corresponding path program 1 times [2020-10-24 00:57:14,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:14,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300348258] [2020-10-24 00:57:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:57:14,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:57:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:57:14,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:57:14,721 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:57:14,722 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:57:14,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:57:14,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:57:14 BoogieIcfgContainer [2020-10-24 00:57:14,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:57:14,766 INFO L168 Benchmark]: Toolchain (without parser) took 1346.54 ms. Allocated memory is still 164.6 MB. Free memory was 140.7 MB in the beginning and 128.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:57:14,767 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory was 98.3 MB in the beginning and 98.2 MB in the end (delta: 97.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:57:14,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.23 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 131.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:57:14,770 INFO L168 Benchmark]: Boogie Preprocessor took 37.76 ms. Allocated memory is still 164.6 MB. Free memory was 131.1 MB in the beginning and 129.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:57:14,771 INFO L168 Benchmark]: RCFGBuilder took 409.90 ms. Allocated memory is still 164.6 MB. Free memory was 129.7 MB in the beginning and 143.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:57:14,773 INFO L168 Benchmark]: TraceAbstraction took 575.42 ms. Allocated memory is still 164.6 MB. Free memory was 142.9 MB in the beginning and 128.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-24 00:57:14,777 INFO L339 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 125.8 MB. Free memory was 98.3 MB in the beginning and 98.2 MB in the end (delta: 97.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.23 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 131.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.76 ms. Allocated memory is still 164.6 MB. Free memory was 131.1 MB in the beginning and 129.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 409.90 ms. Allocated memory is still 164.6 MB. Free memory was 129.7 MB in the beginning and 143.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 575.42 ms. Allocated memory is still 164.6 MB. Free memory was 142.9 MB in the beginning and 128.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] unsigned int a = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=0, a=0] [L16] unsigned int b = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=0, a=0, b=0] [L17] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L7] COND TRUE n == 0 VAL [\old(m)=0, \old(n)=0, m=0, n=0] [L8] return m; VAL [\old(m)=0, \old(n)=0, \result=0, m=0, n=0] [L17] RET, EXPR sum(a, b) VAL [a=0, b=0, sum(a, b)=0] [L17] unsigned int result = sum(a, b); VAL [a=0, b=0, result=0, sum(a, b)=0] [L18] COND TRUE result == a + b VAL [a=0, b=0, result=0] [L19] CALL reach_error() [L4] __assert_fail("0", "sum_non_eq-3.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=39occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 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...